Multigenic resistance to Xylella fastidiosa in wild grapes (Vitis sps.) and its implications within a changing climate

文献类型： 外文期刊

第一作者： Morales-Cruz, Abraham

作者： Morales-Cruz, Abraham;Aguirre-Liguori, Jonas;Gaut, Brandon S.;Massonnet, Melanie;Minio, Andrea;Zaccheo, Mirella;Cochetel, Noe;Walker, Andrew;Cantu, Dario;Riaz, Summaira;Zhou, Yongfeng;Zhou, Yongfeng;Cantu, Dario;Gaut, Brandon S.

作者机构：

期刊名称：COMMUNICATIONS BIOLOGY （ 影响因子：5.9； 五年影响因子：6.3 ）

ISSN：

年卷期： 2023 年 6 卷 1 期

页码：

收录情况： SCI

摘要： Xylella fastidiosa is a bacterium that infects crops like grapevines, coffee, almonds, citrus and olives. There is little understanding of the genes that contribute to plant resistance, the genomic architecture of resistance, and the potential role of climate in shaping resistance, in part because major crops like grapevines (Vitis vinifera) are not resistant to the bacterium. Here we study a wild grapevine species, V. arizonica, that segregates for resistance. Using genome-wide association, we identify candidate resistance genes. Resistance-associated kmers are shared with a sister species of V. arizonica but not with more distant species, suggesting that resistance evolved more than once. Finally, resistance is climate dependent, because individuals from low ( < 10 degrees C) temperature locations in the wettest quarter were typically susceptible to infection, likely reflecting a lack of pathogen pressure in colder climates. In fact, climate is as effective a predictor of resistance phenotypes as some genetic markers. We extend our climate observations to additional crops, predicting that increased pathogen pressure is more likely for grapevines and almonds than some other susceptible crops. Potential resistance genes for Xylella fastidiosa in wild grapes are identified and resistance is shown to be climate dependent.

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