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Diaporthe xiuwenensis sp. nov, a new fungal species causing postharvest kiwifruit rot in Guizhou J. Phytopathol. (IF 1.5) Pub Date : 2024-04-20 Chunguang Ren, Yu Liu, Wenwen Su, Zhengcheng Han, Di Wu, Weijie Li
Diaporthe spp. (including their asexual Phomopsis states) are important plant pathogens found widely in different host plants, such as pathogens, endophytes or saprobes. In this study, a new species of Diaporthe causing fruit rot in kiwifruit, Diaporthe xiuwenensis sp. nov was isolated from kiwifruit with apparent soft rot symptoms during storage in Guizhou Province, China. Identification was made
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Pseudomonas plecoglossicida (NR_114226) as a novel biocontrol agent against Fusarium crown rot of wheat J. Phytopathol. (IF 1.5) Pub Date : 2024-04-13 Kamel Eddine Makhlouf, Boungab Karima, Mokrani Slimane
Fusarium crown rot (FCR) poses a significant threat to wheat crops, causing substantial grain loss and mycotoxin contamination. While chemical fungicides have been effective in controlling this disease, the need for environmentally friendly alternatives is paramount due to concerns about human health and fungicide resistance. This study delves into the efficacy of Pseudomonas plecoglossicida (NR_114226)
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First report Calonectria hawksworthii as an aetiological agent of fruit rot of cocoa in Brazil J. Phytopathol. (IF 1.5) Pub Date : 2024-04-13 Maruzanete Pereira de Melo, Sara de Sousa Martins, Poliana Prates de Souza Soares, Naasoom Luiz Santos Mesquita, Armínio Santos, Quelmo Silva de Novaes, Vitória Cristina Santiago Alves, José Luiz Bezerra, Jadson Diogo Pereira Bezerra
Cacao (Theobroma cacoa L.) is an important tropical fruit tree used in chocolate production. Among the biotic problems interfering with fruit production, phytopathogenic fungi stand out. During a visit to cocoa production areas in the municipality of Medicilândia, Pará, Brazil (Amazon region), we observed cocoa fruits with dark lesions and greyish‐white cottony mycelia growth. In order to determine
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First report of Puccinia modiolae causing rust disease on Alcea rosea in China J. Phytopathol. (IF 1.5) Pub Date : 2024-04-06 Liangdong Song, Peijie Zhai, Qingqin Yao, Zhongdi Wang, Saifei Liu, Yuheng Yang
In China, about 500 Puccinia species have been discovered, with over 200 species distributed in Shaanxi province. In 2023, a rust disease of Alcea rosea was discovered in Shaanxi Province, China, and the pathogen was identified as Puccinia modiolae through morphological characterization and phylogenetic analysis. This is the first documented report of rust disease on A. rosea caused by P. modiolae
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Evaluation of phyllosphere bacterial biocontrol agents for the suppression of rice foliar diseases J. Phytopathol. (IF 1.5) Pub Date : 2024-04-06 G. Sobanbabu, R. Oviya, B. Meena, A. Vijayasamundeeswari, V. Shanmugaiah, V. Ramamoorthy
Phyllosphere colonizing antagonistic bacterial isolates were evaluated for managing major rice foliar diseases, namely brown spot caused by Bipolaris oryzae and sheath rot caused by Sarocladium oryzae. Among these various isolates, Pseudomonas aeruginosa isolate 1 effectively inhibited the mycelial growth of B. oryzae and S. oryzae. The volatile compounds of Bacillus subtilis isolates effectively inhibited
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Phytochemicals demonstrate potential fungicidal activity against Fusarium commune, a newly identified pathogenic fungus causing rhizome rot in Polygonatum cyrtonema (giant Chinese Solomon's seal) J. Phytopathol. (IF 1.5) Pub Date : 2024-04-02 Guoyu Wei, Wei Zhao, Huayang Xu, Guangming Wang, Hualei Wang, Anlong Hu
Polygonatum cyrtonema (giant Chinese Solomon's seal) is a perennial herb belonging to the family Liliaceae, with significant medicinal and dietary value. However, a severe rhizome rot has led to a decline in the yield and quality of this species. In this study, a fungus was isolated from symptomatic rhizome samples and identified as Fusarium commune through molecular and morphological analyses. In
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Identification of phytoplasmas in stone fruit (Prunus sp.) and persimmon (Diospyros kaki L.) trees exhibiting leaf alterations and witches'‐broom in Jordan J. Phytopathol. (IF 1.5) Pub Date : 2024-04-02 Asem Habes Abu Alloush, Rosemarie Tedeschi, Alberto Alma, Piero Attilio Bianco, Fabio Quaglino
During field surveys conducted in 2020 in Jordanian orchards, phytoplasma‐like symptoms (leaf yellowing/reddening and rolling, and witches'‐broom) were observed in three stone fruit species (peach, European plum, sweet cherry) and persimmon. Molecular analyses identified phytoplasma strains belonging to the species ‘Candidatus Phytoplasma solani’ (subgroup 16SrXII‐A) as largely prevalent in stone fruit
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Methods for inoculation and evaluation of resistance to Macrophomina phaseolina in soybean genotypes J. Phytopathol. (IF 1.5) Pub Date : 2024-04-01 Eduardo Henrique Bizari, Rita de Cássia Panizzi, Bruno Henrique Pedroso Val, Cleber Vinicius Giaretta Azevedo, Carolina Andrade Franco, Fábio Luiz Checchio Mingotte, Anderson Prates Coelho, Jardel da Silva Souza, Sandra Helena Unêda‐Trevisoli
Charcoal rot, caused by Macrophomina phaseolina, is a disease of economic significance in soybean production. The evaluation of this disease is difficult due to the lack of reliable and efficient methods for testing soybean genotypes. This work aimed at investigating different inoculation methods for Macrophomina phaseolina in soybean genotypes to determine the degree of resistance and their use in
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Efficiency of bacterial isolates on suppressing brown spot in rice plants J. Phytopathol. (IF 1.5) Pub Date : 2024-04-01 Akintunde Abiodun Ajulo, Gustavo de Andrade Bezerra, Rodrigo Silva de Oliveira, Ariany Rosa Gonçalves, Maria Fernanda Gonçalves Godoi Moura, Marco Antônio Adorno Cardoso, Marta Cristina Corsi de Filippi
Many fungicides can control brown spot, caused by Bipolaris oryzae in rice (Oryza sativa L.), although searching for beneficial microorganisms for biocontrol will improve sustainable integrated pest management. The aim of this investigation was the selection of natural suppressors of the brown spot disease in rice. We performed biochemical (E1), molecular antagonism (E2) and severity suppression (E3)
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Stenotrophomonas maltophilia causing maize (Zea mays L.) seedling soft rot disease, an emerging threat to maize crop J. Phytopathol. (IF 1.5) Pub Date : 2024-04-01 Maede Heidari, Milad Aeini
Maize (Zea mays L.) is a widely cultivated monoecious plant, making it vulnerable to seedling soft rot, a significant disease that results in substantial global losses. During the 2020–2021, various regions of Iran reported a series of symptoms, which included seedling stunting, the browning, and rotting of roots and crowns, and post‐emergence dieback. To identify the causal agent of this disease,
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IBSHC: Improved BIRCH-based segmentation and hybrid classification model for Mango Disease Detection J. Phytopathol. (IF 1.5) Pub Date : 2024-03-26 K. Lavanya, A. Packialatha
Mangoes are referred to as the ‘king of fruits’ and are in great demand; yet, in order to optimize profitability, disease control is crucial. Automatic leaf disease segmentation and detection remains challenge due to the variability of symptoms. The basic necessity for any computer-aided system is an accurate approach for identifying diseases. This paper intends to propose a four-stage Mango Disease
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Geographic distribution, prevalence, and incidence of citrus black spot caused by Phyllosticta citricarpa in Tunisia J. Phytopathol. (IF 1.5) Pub Date : 2024-03-29 Najwa Benfradj, Sabrine Mannai, Céline Jeandel, Naima Boughalleb‐M'Hamdi
Citrus black spot (CBS), caused by Phyllosticta citricarpa, is an important disease of citrus, an economically important fruit crop worldwide and particularly in Tunisia. CBS was recently detected in Tunisia and this study revealed that it is widespread in the governorates of Nabeul and Sousse. The highest incidence of CBS was found in the Bouargoub region (73.7%), while the lowest was observed in
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Isolation, identification, and pathogenicity of Rhizoctonia spp. recovered from soil samples of the greenhouse tomato growing area of the West Mediterranean region, Türkiye J. Phytopathol. (IF 1.5) Pub Date : 2024-03-29 Cafer Eken, Dudu Demir, Gülsüm Uysal, Selda Çalışkan, Emre Sevindik, Kardelen Çağlayan
This study's objective was to identify the anastomosis groups and pathogenicity of Rhizoctonia species from soil samples in tomato production areas of Antalya, Burdur, and Isparta provinces in the West Mediterranean Region of Türkiye during the 2022 season. Soil samples were gathered from tomato plant rhizospheres in 223 different greenhouses, and isolations were done from the soil using the baiting
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First report of oat crown rust caused by Puccinia coronata var. avenae f.sp. avenae in South Korea J. Phytopathol. (IF 1.5) Pub Date : 2024-03-26 Yu Na Kim, Jang Hoon Lee, Young Cheol Kim
Oats (Avena sativa L. cv. Joyang), cultivated during June 2023 in experimental fields of Naju County, South Korea, exhibited crown rust symptoms resembling those caused by isolates of Puccinia coronata. Yellow urediniospores measuring 15.3 ± 3.2 × 13.6 ± 3.0 μm were identified through microscopic examination. Multilocus sequence typing of housekeeping genes in the DNA of this fungal isolate showed
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First worldwide record of Colletotrichum siamense and Colletotrichum truncatum causing leaf anthracnose on desert rose (Adenium obesum) J. Phytopathol. (IF 1.5) Pub Date : 2024-03-26 Perla R. Nuñez‐García, Rita J. Salazar‐Mesta, Moisés Camacho‐Tapia, Willie A. S. Vieira, María B. Contreras‐Soto, Juan M. Tovar‐Pedraza
In September 2022, symptoms of leaf anthracnose were observed on desert rose (Adenium obesum) plants distributed in parks and gardens in Culiacán, Sinaloa, Mexico. Two morphotypes of Colletotrichum isolates were obtained from symptomatic tissues. Based on morphological characterization in combination with multilocus phylogenetic analyses including data from internal transcribed spacer, actin, glyc
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Significance of Gnomoniopsis smithogilvyi as kernel rot of sweet chestnut in Turkey J. Phytopathol. (IF 1.5) Pub Date : 2024-03-23 Deniz Çakar
Chestnut nut rots caused by fungi, especially by Gnomoniopsis smithogilvyi, showed a significant increase not only in Turkey but also in the other chestnut‐producing countries. In this study, the prevalence of chestnut kernel rot was determined by using 800 fruits collected from eight significant chestnut‐growing provinces of Turkey located in the Black Sea, Marmara, and Aegean Regions. Six types of
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Fus3 is a pathogenicity factor of Botryosphaeria dothidea on kiwifruit J. Phytopathol. (IF 1.5) Pub Date : 2024-03-18 Yong Ho Shin, Holger B. Deising, Yong Chull Jeun
The ascomycete fungus Botryosphaeria dothidea is the causal agent of postharvest rot in kiwifruit. Production and spreading of conidia, differentiation of infection hyphae and invasion of intact fruit surfaces are required to cause fruit rot disease. In several pathogenic fungi, the homologue of the Saccharomyces cerevisiae mitogen activated protein kinase (MAPK) gene Fus3 has been identified as a
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First report of root‐knot nematode Meloidogyne ethiopica Whitehead, 1968 on kiwifruit Actinidia deliciosa (A. Chev.) C. F. Liang and A. R. Ferguson, 1984 in Türkiye J. Phytopathol. (IF 1.5) Pub Date : 2024-03-18 Anıl Fırat Felek, Faruk Akyazi
Root‐knot nematodes (Meloidogyne spp.) cause serious damage to kiwifruit orchards in Türkiye. In summer 2022, during a survey on root‐knot nematodes of kiwifruit in Bursa, Rize, and Yalova provinces in the country, many galls in the roots were discovered. A single egg mass was extracted from the infected roots and inoculated to Rutgers tomato and kiwi (Hayward) plants for reproduction as a pure culture
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Virulence profiling of emerging Indian strains of Burkholderia glumae causing panicle blight of rice J. Phytopathol. (IF 1.5) Pub Date : 2024-03-16 Bhaskaran Sreenayana, Kalyan Kumar Mondal, Sanjeev Kumar, Nivetha Mathiyalagan, Mrutyunjaya Shrinivas Reddy, Kalaivanan Nagaranai Shanmugam, Amrutha Lakshmi M, Rashmi Echalukoppa Ratnakara, Chander Mani
Bacterial panicle blight (BPB), incited by Burkholderia glumae, has impacted rice production globally. Despite its significance, little is known about the disease and the virulence pattern of the causal agent. BPB is a major challenge in the rice‐growing belts of North‐western India. We have characterized the 21 BG strains using the 16S rRNA and the gyrB gene‐based sequence approach in the present
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Histological alterations in chilli pepper (Capsicum annuum L.) roots associated with sudden wilt syndrome J. Phytopathol. (IF 1.5) Pub Date : 2024-03-13 Pooja Salaria, Sandeep Jain, Anu Kalia, Anjali
Sudden wilt syndrome of chilli, an emerging and destructive disorder, is characterized by an abrupt appearance that has increased in Indo-Gangetic alluvial plains over the past decade. The primary cause associated with the problem is water stagnation that creates hypoxic conditions in the root zone, and the plant mortality is further aggravated by soil-borne fungi Fusarium oxysporum. The effects of
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Phenotypic and genotypic evaluation of Turkish bread wheat (Triticum aestivum L.) varieties to stripe rust (Puccinia striiformis f.sp. tritici) J. Phytopathol. (IF 1.5) Pub Date : 2024-03-13 Ahmet Cat
Wheat stripe rust, which is caused by the basidiomycetes fungal pathogen Puccinia striiformis f.sp. tritici (Pst), is one of the most destructive diseases of wheat in Türkiye and worldwide. In this study, a total of 99 bread wheat varieties were assessed at the adult plant stage under natural infection conditions during the 2021–2022 and 2022–2023 growing seasons. Additionally, specific molecular markers
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Plant parasitic nematodes on soybean (Glycine max (L) Merr.) in the Metekel zone (Ethiopia) and varietal resistance evaluation to Meloidogyne javanica J. Phytopathol. (IF 1.5) Pub Date : 2024-03-13 Frezer A. Adamu, Wakuma B. Hundessa, Sihen Getachew, Abebe W. Aseffa, Beira H. Meressa
Plant parasitic nematodes cause severe damage to soybean crops, leading to substantial losses in yield and quality. However, more information is needed regarding the occurrence, distribution and damage status of soybean PPNs in Ethiopia. A total of 180 samples of rhizosphere and roots were collected randomly from three major soybean‐producing districts of Metekel Zone. Nematodes were extracted and
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First report of Trichothecium roseum causing pink mould on strawberry fruit in Iran J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 Fatemeh Maghsoodi, Parissa Taheri, Saeed Tarighi
Strawberry (Fragaria × ananassa) is one of the most important fruit crops, worldwide. In June 2023, strawberry fruits with pink mould symptoms were collected from a storage facility in Khorasan Razavi province of Iran. Trichothecium roseum was isolated from symptomatic fruit and identified through morphological characteristics. Molecular identification was carried out based on the internal transcribed
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Research on soil‐borne diseases of ginseng due to root exudates J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 Sen Jia, Shiyou Yang
In a monocropping pattern for the crop domestication process, the interspecific and intraspecific interaction modes can be changed. In domesticated crops, the intraspecific interactions may have detrimental effects. Moreover, soil‐borne diseases in consecutive monocropped medicinal crops can be a critical challenge that has been difficult to solve. This study has been conducted to evaluate the effect
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Distribution and diversity of emergent Banana bunchy top virus infecting banana and plantain in Cameroon, Central Africa J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 Sergine Ngatat, Rachid Hanna, Armand R. P. Doumtsop Fotio, Jules A. Lienou, Samuel Nanga Nanga, Apollin Fotso Kuate, Bolaji Osundahunsi, Komi K. M. Fiaboe, Bertrand Ndemba, Gerbert S. Dossa, Tunrayo Alabi, P. Lava Kumar
Invasions of arthropod vectors and viruses are the main factors associated with emerging plant viral diseases. The presence of the Banana bunchy top virus (BBTV, genus Babuvirus), an aphid‐transmitted virus responsible for the banana bunchy top disease (BBTD), was first confirmed in 2008 in the South region of Cameroon. This study reports on surveys over 14 years to determine the status of BBTV spread
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Colletotrichum siamense is associated with post‐harvest anthracnose of red onion in the Philippines J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 Deborah Anne Dimayacyac, Mark Angelo Balendres
Onion (Allium cepa L.) is an important crop widely cultivated in the Philippines. In the Philippines, Colletotrichum gloeosporioides sensu lato and C. circinans have been reported to cause anthracnose twister disease and onion smudge, respectively. This study reports C. siamense from anthracnose‐infected onion bulbs. The fungus was identified using morpho‐cultural characterization and multi‐locus analyses
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Lesson from the emergence, spread and decline of Dickeya solani, the virulent potato blackleg and soft rot bacterial pathogen in Finland J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 Yeshitila Degefu
The threat of emerging plant diseases has become more frequent as global warming and international trade are increasing. Blackleg and soft rot of potatoes caused by the group of bacteria in the family Pectobacteriaceae and the genera Dickeya and Pectobacterium are important diseases causing economic losses globally. In the European Union, they are regulated non‐quarantine pests. Five species are commonly
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First report of Fusarium redolens causing root rot of Goji berry cv. ‘Ningqi‐7’ in China J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 C. Y. Xu, H. H. Gao, Q. Han, C. B. Jia, B. Swingle, M. Gao, J. Y. Su
Goji berry is an important cash crop of the Ningxia Hui Autonomous Region of China. In the summer of 2019 and 2020, a root rot outbreak appeared in Zhongning County Ningxia Hui Autonomous Region. The correct identification of the causal agent is very important for prevention and cure of this root rot disease. The rotten root samples of symptomatic trees were dug for strain isolation using tissues separation
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Molecular detection of ‘Candidatus phytoplasma aurantifolia’ associated with virescence and phyllody of Zinnia peruviana: A new record for India J. Phytopathol. (IF 1.5) Pub Date : 2024-03-06 S. Mahadevakumar, P. V. S. R. N. Sarma, C. Danteswari, Josna Joy, S. Chandranayaka, T. S. S. K. Patro
Zinnia peruviana (Asteraceae) is an annual flowering plant cultivated in various gardens of Mysore, the south of Karnataka state, India. During 2021, phytoplasma‐like symptoms such as virescence and phyllody were observed on Zinnia in Mysore local gardens. A total of 10 symptomatic and five asymptomatic samples were collected, and the DNA was amplified by PCR using primers specific to 16S RNA and secA
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Characterization and report of binucleate Rhizoctonia AG-Fb affecting soybean in Brazil J. Phytopathol. (IF 1.5) Pub Date : 2024-02-14 Suelen Cappellaro, Jaqueline Huzar-Novakowiski, José Luis Trevizan Chiomento, Eliane Mayumi Inokuti
Rhizoctonia root rot is a disease that can affect soybean leading to plant death usually in bare patches. Frequently, Rhizoctonia solani has been reported as the main causal agent of the disease. However, due to the great genetic diversity of the genus Rhizoctonia, there are other species that could also attack soybean plants. Thus, the objective of this study was to determine the pathogenicity and
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Pantoea vagans causing soft rot disease in Agave angustifolia, in Mexico J. Phytopathol. (IF 1.5) Pub Date : 2024-02-11 Nadia Denisse Rodríguez Velázquez, Guadalupe Osiris Pérez Pérez, Gustavo Vergara Arellano, Paulina Estrada de los Santos, Jose Silvestre Mendoza Figueroa, Belén Chávez-Ramírez
In Mexico, agave (Agave angustifolia Haw.) crops stand out regionally due to their socioeconomic, agroecological and cultural importance. It is the most important raw material in the elaboration of two relevant alcoholic beverages: tequila and mezcal. Nevertheless, this crop is susceptible to phytopathological threats mainly fungi and bacteria, both having a massive impact in yearly production. In
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Isolation, identification, and characterization of Pectobacterium actinidiae isolated from infected sugar beet leaves J. Phytopathol. (IF 1.5) Pub Date : 2024-02-11 Murat Öztürk
During the sugar beet growing seasons of 2019 and 2020, symptomatic leaf samples displaying necrotic spots were collected for the isolation of pectinolytic bacteria. Seven bacterial isolates were obtained from these infected leaves on crystal violet pectate (CVP) medium. Two of these isolates exhibited the ability to macerate potato tuber slices and induced disease symptoms on petioles of sugar beet
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Molecular characterization of mungbean yellow mosaic India virus infecting Vigna radiata in Oman J. Phytopathol. (IF 1.5) Pub Date : 2024-01-31 Muhammad Shafiq Shahid, Abdullah Mohammed Al-Sadi
The full-genome sequences of a bipartite begomovirus were identified in a mungbean (Vigna radiata) crop displaying symptoms such as yellow mosaics and stunting in the Al-Batinah North region (23.6867° N 57.9058° E), Oman. Initial detection and confirmation of the virus genome were carried out through polymerase chain reaction, followed by obtaining complete genomes using rolling circle amplification
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A decade of monitoring surveys for Xylella fastidiosa subsp. pauca in olive groves in Apulia (Italy) reveals a low incidence of the bacterium in the demarcated areas J. Phytopathol. (IF 1.5) Pub Date : 2024-01-31 Margherita Ciervo, Marco Scortichini
In October 2013, Xylella fastidiosa subsp. pauca (Xfp) was reported as being associated with a decline of olive groves in Salento (Apulia, Italy) and named as “olive quick decline syndrome” (OQDS). Due to its quarantine status, a series of mandatory actions were established in the Apulia region to impede its further spread in the territory. Upon the demarcation of “containment” and “buffer” zones,
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The race distribution of the Fulvia fulva populations and mutations in the Avr genes in Turkey J. Phytopathol. (IF 1.5) Pub Date : 2024-01-31 Esra Gül, Aziz Karakaya, Ali Ergül
Tomato leaf mould caused by Fulvia fulva (syn. Cladosporium fulvum, Passalora fulva) is an especially important disease of greenhouse grown tomato. In this study, F. fulva isolates were obtained from Antalya, Muğla, Mersin, Burdur, Bartın, and Zonguldak provinces of Turkey. Pathogenicity tests were carried out with 47 isolates using a differential set of tomato varieties containing Cf-2, Cf-4, Cf-5
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Hydroalcoholic extract: A potential source from Azadirachta indica a Juss flower for DNA and BSA binding, scavenging, fungicidal, and larvicidal activities J. Phytopathol. (IF 1.5) Pub Date : 2024-01-23 Palanivelmurugan Mohanasundaram, Sudha Sankaran, Dhamodiran Mathivanan, Chinnaperumal Kamaraj, Antoneyraj Mary Saral
The present study focuses on the evaluation of the DNA and BSA binding capability, anti-fungal, metal chelation, and larvicidal activity of extracts of Azadirachta indica A Juss flower. The different extracts of A. indica was prepared by soxhlet extraction using Petroleum Ether (PE), acetone (AC), and hydroalcohol (HA) as solvents. DNA and BSA binding ability of HA extract was calculated through the
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Pathogenicity of rice blast isolates (Pyricularia oryzae) in irrigated lowland of Bangladesh J. Phytopathol. (IF 1.5) Pub Date : 2024-01-23 Quazi Mostaque Mahmud, Md. Rejwan Bhuiyan, Md. Motaher Hossain, Nur Ausraf, Md. Shahid Islam, Md. Hasibur Rahaman Hera, Md. Mamunur Rashid, Md. Abdul Mannan Akanda, M. Mofazzal Hossain, Md. Tajul Islam Chowdhury, Md. Abdul Latif, Mitsuhiro Obara, Yoshimichi Fukuta, Mohammad Ashik Iqbal Khan
Rice blast poses a significant threat to food security in Bangladesh, particularly in irrigated lowland (boro rice), which constitutes over 50% of the country's total rice production. While using resistant varieties is an effective method to control rice blast, developing durable resistance is challenged by the pathogen's high variability. To address this, the current study examined the distribution
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Transcriptional alterations of the resistant potato genotype ‘Cruza 148’ in response to Ralstonia solanacearum infection J. Phytopathol. (IF 1.5) Pub Date : 2024-01-19 Lilian A. Okiro, Richard M. Mulwa, Maurice E. Oyoo, Thiago Mendes
Ralstonia solanacearum, a highly destructive phytopathogen causing bacterial wilt disease, poses a substantial risk to the potato value chain, putting global food security at risk and impeding potato production. ‘Cruza 148’, a locally adapted potato genotype, has been reported to exhibit resistance when cultivated in areas with a background of bacterial wilt occurrences. This study aimed to acquire
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Colletotrichum siamense is responsible for anthracnose on Hymenaea stigonocarpa in Brazil J. Phytopathol. (IF 1.5) Pub Date : 2024-01-08 Kelliene R. Silva, Willie A. S. Vieira, Marcos P. S. Câmara, Vinson P. Doyle, Marcos Giongo, Manoel M. Santos, Raimundo Wagner S. Aguiar, Cristiano B. Moraes, Carlos A. Inácio, Alex Sander R. Cangussu, Gil R. Santos
Hymenaea stigonocarpa, popularly known as ‘jatobá’ or ‘jatobá-do-cerrado’, is a native plant widely distributed across Brazilian Cerrado areas. This plant is used for urban afforestation, human and animal feeding, and industry. Foliar lesions resembling anthracnose symptoms were observed on H. stigonocarpa in natural habitats and nurseries. Microscopic examination of acervuli indicated a Colletotrichum
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Insights into the complexities of fungus-insect-plant interaction: The laurel wilt disease J. Phytopathol. (IF 1.5) Pub Date : 2024-01-08 Khaled Abdrabo El-Sayid Abdrabo, Guan Jie Phang, Silmi Yusri Rahmadani, Yin-Tse Huang
Laurel wilt disease, caused by the fungus Harringtonia lauricola and transmitted by the ambrosia beetle Xyleborus glabratus, poses a significant ecological and economic threat to various species of the Lauraceae family, particularly avocado. The disease is characterized by the formation of tyloses blocking xylem vessels, hindering water conductance, and decreasing leaf gas exchange. The relationship
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Binucleate Rhizoctonia AG-A causing black root rot of strawberry in Albania J. Phytopathol. (IF 1.5) Pub Date : 2024-01-08 Magdalena Cara, Jordan Merkuri, Alkida Salliu, Mira Vojvodić, Isidora Knežević, Miljan Grkinić, Aleksandra Bulajić
Strawberry production in Albania is very important and growing rapidly, while data on strawberry diseases are lacking. In 2022, symptoms of leaf necrosis, root rot, and wilt were observed on strawberry plants of cultivars ‘Savana’, ‘Sabrina’, and ‘Fortuna’ in greenhouses near Vajkan, Fier, Albania. The disease incidence was estimated at 50%. Only isolates of Rhizoctonia spp. were obtained from symptomatic
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Natural occurrence of cucumber mosaic virus infecting Adenium obesum plants in Brazil J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 Vinicius Henrique Bello, Larissa Carpim, Valdir Atsushi Yuki, José Evando Aguiar Beserra Júnior, Tatsuya Nagata, Jorge Alberto Marques Rezende, Elliot Watanabe Kitajima
In 2022, virus-like symptoms were observed in Adenium obesum plants in Brazil. High-throughput sequencing analysis found three contig sequences of cucumber mosaic virus (CMV) genome segments, which were of 3352, 3006 and 2221 nucleotides, and shared 98.59%, 95.02% and 98.05% nucleotide identities with the nucleotide sequences of CMV RNAs 1, 2 and 3, respectively. Phylogenetic analysis of the coat protein
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Differential expression and gene correlation analyses reveal core CAZymes in Fusarium oxysporum f.sp. lycopersici exposed to mutagen and heat stress J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 Abhijeet Roy, Barsha Kalita, Raja Rajeswary Thanmalagan, Annamalai Arunachalam, Lakshmi PTV
Fusarium oxysporum f.sp. lycopersici is the casual organism of tomato wilt disease which is a devastating plant pathogen responsible for annual loss of this fruit crop. An important step in fungal growth and development is germination, that is transformation of dormant spores into a growing hypha. For this, a set of special type of enzymes known as CAZymes are required for construction and remodelling
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Sweet resistance against botrytis grey mould in chickpea J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 S. Maurya, A. Arora, A. Chauhan, L. B. Yadav, S. K. Verma, R. K. Panwar
Despite significant nutritional value and vast expanse under chickpea cultivation, fungi-borne diseases are the main limiting factors to increasing its yield. Botrytis grey mould (BGM) is a major foliar disease knocking chickpeas sideways. Thus, to compensate for economic yield loss, BGM-resistant lines must be fished through an effective screening technique. In the present study, carbohydrates, mainly
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Involvement of Phytophthora citrophthora and Phytophthora nicotianae in severe decline and gummosis of grapefruit (Citrus x paradisi Macfad.) in southern Türkiye J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 İlker Kurbetli
Since the summer of 2020, severe decline and gummosis were observed on 20- to 30-year-old grapefruit trees cv. Star Ruby in Antalya province in the Western Mediterranean region of Türkiye. Grapefruit trees were examined in affected commercial orchards in Aksu, Manavgat, Muratpaşa and Serik counties, located near the coast of the Mediterranean Sea. Symptomatic trees exhibited leaf discoloration, defoliation
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Molecular characterizations of Verticillium dahliae isolates from grafted tomatoes grown in Antalya province of Türkiye J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 Hasan Akar, Ahmet Cat, Mursel Catal
Verticillium wilt caused by soil-borne fungus Verticillium dahliae results in serious quality, yield and economic losses in tomato fruit production in tomato-growing areas around the world. In this study, V. dahliae isolates obtained from six different major grafted tomato production areas in Antalya province of Türkiye were characterized for races, pathotypes and vegetative compatibility groups using
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Polyethylene glycol–mediated genetic transformation and fluorescent labelling of Colletotrichum sublineola for studying sorghum anthracnose pathogenicity J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 Siyu Li, Songshu Chen, Zheng Tai, Lingfeng Luo, Ling Jiang, Fen Wang, Xin Xie
Anthracnose, a disease primarily caused by the fungus Colletotrichum sublineola, affects sorghum production in China. However, the infection mechanisms and complex host interactions of C. sublineola remain to be elucidated. Thus, this study aimed to establish and optimize a protoplast transformation system of C. sublineola so as to lay a foundation for further research on the infection mechanisms and
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Neopestalotiopsis iberica induces leaf spots on Synsepalum dulcificum in China J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 Li-Qian You, Indunil C. Senanayake, Jia-wei Liu, Mei Luo, Ying-hua Huang, Zhang-Yong Dong
Synsepalum dulcificum is one of the well-known edible and ornamental plants with its unique flavour changing function of sour taste. In 2021, a new leaf spot disease was observed on S. dulcificum during a field survey in Guangzhou City, Guangdong Province, China. The pathogen was isolated and identified using morphological examination and phylogeny based on multi-gene sequences analysis of the nuclear
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Fusarium species causing root rot and wilt in tomato in Brazil J. Phytopathol. (IF 1.5) Pub Date : 2024-01-03 Robinson Severo, Leandro Jun Soki Shibutani, Gilvan Ferreira da Silva, Sarah da Silva Costa Guimarães, Francisco de Alcântara Neto, José Evando Aguiar Beserra, José Fábio Ferreira de Souza, Maruzanete Pereira de Melo
A high frequency of plants showing symptoms of wilting and root rot has been observed in tomato-producing areas in Santarém and Belterra, Pará, Brazil. These plants showed symptoms ranging from yellowing to wilting, with roots displaying reduced development and darkening of the xylem. Four fungal isolates, derived from a collection of 12 obtained from symptomatic plants, were chosen for identification
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Development of genomic SSR markers and genetic diversity of Sphaerulina musiva in China J. Phytopathol. (IF 1.5) Pub Date : 2023-12-13 Tengjiao Ma, Yanhong Hu, Fanggong Li, Longchang Liu, Linkai Cui
Sphaerulina musiva is an important poplar pathogenic fungus that causes leaf spot and stem canker. SSR markers serve as excellent molecular markers for assessing genetic diversity in fungi. To date, few SSR markers have been developed and applied in S. musiva. In this study, genomic-SSR markers were developed from the S. musiva genome, and applied to analyse the genetic diversity of S. musiva isolates
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Genetic diversity and pathogenicity of fungi associated with rice sheath rot in the Fogera plain, Northwest Ethiopia J. Phytopathol. (IF 1.5) Pub Date : 2023-12-09 Tilahun Gizaw, Workie Anley Zegeye, Nigatu Hika, Alemu Degwale, Adigo Setargie, Mesfin Tsegaw
Sheath rot is a widespread rice disease that affects rice crops worldwide. It is particularly prevalent in Ethiopia, with the Fogera plains exhibiting the highest incidence and severity. However, the lack of reliable molecular-level identification of rice fungal pathogens in Ethiopia has hindered the development of effective management practices. This study aimed to assess the diversity of fungal agents
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Protective role of agarwood essential oil and compounds thereof in crop-associated fungal pathogens J. Phytopathol. (IF 1.5) Pub Date : 2023-12-08 Jing Liu, Nuojin Cheng, Yuan Li, Xingtao Jiang, Qi Luo, Zehong Wu
The potential risk of fungal pathogen infection in agriculture has great adverse effects on agricultural development and human health. In this study, we explored the application of agarwood essential oil (AEO) and its main components in the development of agricultural fungicides. The compositions of AEO produced in Maoming City of Guangdong Province, China was firstly analysed by GC–MS. AEO and compounds
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Identification of resistant cowpea genotypes and aggressiveness of Macrophomina phaseolina isolates by diallel analysis J. Phytopathol. (IF 1.5) Pub Date : 2023-12-05 Pedro Ivo Silvestre Siqueira e Silva, Francisco Álef Carlos Pinto, Antonio Elton da Silva Costa, Jane Clésia Silva dos Santos, Ana Beatriz Joy Maciel Valdevino, Jeronimo Constantino Borel, Francine Hiromi Ishikawa
Cowpea is grown in semiarid regions of Brazil. However, the occurrence of diseases, such as charcoal rot, is one of the main limiting factors to production. Disease is caused by the fungus Macrophomina spp., one of the most important plant pathogens in semiarid conditions. The use of resistant cultivars is the most effective method to control this disease. The objective of this study was to evaluate
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Performance of biological and chemical nematicides in different soils to control Meloidogyne incognita in tomato plants J. Phytopathol. (IF 1.5) Pub Date : 2023-11-30 Angelo Loffredo, Scott Edwards, Antoon Ploeg, J. Ole Becker
Three fluorinated, one carbamate nematicide, as well as two biological control agents were tested in greenhouse trials to determine their efficacy against Meloidogyne incognita on tomato plants in three different soils. Each soil was treated with one of the following chemical nematicides at the labelled rate: fluensulfone, fluopyram, fluazaindolizine, and oxamyl. The biocontrol agents used were Metacordyceps
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Phenotypic response of a core collection of Aegilops triuncialis accessions to wheat leaf rust and expression pattern of genes involved in resistance J. Phytopathol. (IF 1.5) Pub Date : 2023-11-23 Marzieh Sadat Hosseini, Behnam Davoudnia, Ali Dadkhodaie, Bahram Heidari
Leaf rust caused by Puccinia triticina Eriks. is a serious threat to wheat production worldwide. Exploiting wild relatives can effectively help to improve the genetic resistance of wheat against rust. This study aimed to evaluate the responses of 34 Aegilops triuncialis accessions to seven Pt pathotypes and to analyse expression of genes associated with resistance at the seedling stage. Following multipathotype
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Pathogenicity-related long non-coding natural antisense transcripts in Verticillium dahliae during infections in cotton J. Phytopathol. (IF 1.5) Pub Date : 2023-11-22 Ran Li, Huishan Xue, Xiyue Ma, He Zhu, Yue Li, Xiaofeng Dai, Jie-yin Chen
Long non-coding RNAs (lncRNAs) are non-coding RNAs with a length of more than 200 nucleotides. LncRNAs are functional factors involved in various biological processes at the transcriptional, post-transcriptional and epigenetic regulation, which have been widely studied in animals and plants, but less in fungi. In our previous research, 352 Verticillium dahliae lncRNAs were identified by high-throughput
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Diaporthe melongenae sp. nov, a new fungal species causing leaf blight in eggplant J. Phytopathol. (IF 1.5) Pub Date : 2023-11-21 Herbert Dustin Aumentado, Mark Angelo Balendres
Eggplant is a vegetable crop of the Solanaceae family. In November 2021, leaf blights of eggplant were observed from an eggplant field with an approximate disease incidence of 10%–30% in Cavite, Philippines. The infected leaves had typical symptoms of Phomopsis blight disease. Two fungal isolates were obtained, and morphological characteristics resemble those of a Diaporthe species. Based on the combined
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First report of coffee leaf spot caused by Curvularia geniculata J. Phytopathol. (IF 1.5) Pub Date : 2023-11-14 Hyo Song Nam, Hyeon-Seok Park, Young Cheol Kim
During May and June 2021, the commercially grown coffee, variety SL34, grown commercially, developed necrotic, irregularly shaped spots on 1–5% of leaves. These plants were under greenhouse culture in the area of Goheung in South Korea (34°47′N, 127°46′E). The leaf spots, often observed at leaf margins, changed with time from reddish-brown coloration to dark brown lesions with yellow halos. Morphological
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Identification and fungicide sensitivity of Alternaria tenuissima causing leaf spot of Tetrapanax papyrifer newly reported in China J. Phytopathol. (IF 1.5) Pub Date : 2023-11-12 Xian-Ying Tang, Rui Ban, Xue-Ping Wu, Hong-Tao Li, Khadija Javed, Li-Juan Peng, Hai-Xia Ding
Tetrapanax papyrifer, the rice-paper plant, is an evergreen shrub and is traditionally used as a herbal medicine in China. In October 2021, a serious leaf spot disease was extensively observed on T. papyrifer in Guizhou, China. Given the limited information available about the aetiology of this disease, isolations were performed, the morphological characteristics and multi-locus phylogenetic analysis