varieties can change the arbuscular mycorrhizal fungi (AMF) community structure in their rhizosphere. Our aim here was to present a quantitative analysis of the AMF species associated with varieties from Cabernet, Merlot, and Sauvignon groups in a subtropical Cambisol, Southern Brazil. Eight varieties were selected for the field experiment from September 2019 to June 2021. For each studied variety, we established five rectangular plots (60.0 × 14.0 m) using a randomized block design with seven blocks. We found seven main groups considering the dissimilarities of AMF spores: i) in the root zone of C. Eidos and C. Volos (both varieties from the Cabernet group); ii) in the root zone of Fleurtai; iii) in the root zone of Merlot Khantus; iv) in the root zone of M. Khorus; v) in the root zone of Sauvignon Kretos; vi) in the root zone of S. Rytos; and vii) in the root zone of Soreli. The results of our study highlighted the importance of considering varieties as potential hosts for specific AMF species by creating an AMF-host pairing specificity to improve root colonisation and plant yield in their own advantage. Thus, field experiments considering varieties into agrosystems for vine production contribute to our understanding of the AMF symbiosis in subtropical soils.

中文翻译：

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根菌根物种和品种配对很重要：巴西南部丛枝菌根真菌群落和葡萄品种的研究案例

品种可以改变根际丛枝菌根真菌（AMF）的群落结构。我们的目的是对巴西南部亚热带坎比索尔地区的赤霞珠、梅洛和长相思品种相关的 AMF 物种进行定量分析。 2019年9月至2021年6月选择了8个品种进行田间试验。对于每个研究品种，我们采用七块随机区组设计建立了五个矩形样地（60.0×14.0 m）。考虑到 AMF 孢子的差异，我们发现了七个主要群体： i) 在 C. Eidos 和 C. Volos（这两个品种都来自赤霞珠群体）的根区； ii) 在 Fleurtai 的根区； iii) Merlot Khantus 的根区； iv) M. Khorus 的根区； v) 长相思 (Sauvignon Kretos) 的根区； vi) 在 S. Rytos 的根区； vii) 在 Soreli 的根区。我们的研究结果强调了通过创建 AMF-宿主配对特异性来考虑将品种作为特定 AMF 物种的潜在宿主的重要性，以利用其自身优势来提高根部定殖和植物产量。因此，将品种纳入葡萄生产农业系统的田间实验有助于我们了解亚热带土壤中的 AMF 共生关系。