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Sequencing of leaf endophytic fungal communities of Carya illinoinensis revealed a dominance of pathogenic fungi
Physiological and Molecular Plant Pathology ( IF 2.7 ) Pub Date : 2024-03-11 , DOI: 10.1016/j.pmpp.2024.102265 Lujun Wang , Misheng Zhou , Xinling Cai , En Liu , Roger T. Koide , Qian Zhang
Physiological and Molecular Plant Pathology ( IF 2.7 ) Pub Date : 2024-03-11 , DOI: 10.1016/j.pmpp.2024.102265 Lujun Wang , Misheng Zhou , Xinling Cai , En Liu , Roger T. Koide , Qian Zhang
Understanding the composition of leaf endophytic fungal communities could have important implications for orchard management. The planted area of pecan trees, , is increasing in China. Leaf diseases of pecan trees cause huge economic losses and have incidence ofabout 50%–90%. However, little is known about whether the pathogens mainly persist on leaf surfaces, in the soil or in the air, or live within leaves as endophytes. In this study, pecan leaves were sampled from 2-, 3-, 6-, and 10-year old trees in the subtropical humid monsoon climate of China, and leaf endophytic fungal communities were characterized using high throughput sequencing. Leaf endophytic fungal OTUs (operational taxonomic units) mainly belonged to Ascomycota, with a much smaller fraction in the Basidiomycota. was the dominant genus across all four tree ages. Plant pathogens were found to be the dominant functional guild by functional group annotation using FUNGuild. Three known disease agents of pecan (, and ), were detected as leaf endophytes. To our knowledge, this is the first report of leaf fungal pathogens occurring as dominant endophytes in pecan leaves.
更新日期：2024-03-11
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