数字农科院2.0

Exploration of phyllosphere microbiomes in wheat varieties with differing aphid resistance

文献类型： 外文期刊

作者： Xinan Li;Chao Wang;Xun Zhu;Vardis Ntoukakis;Tomislav Cernava;Decai Jin

作者机构：

关键词： Bacterial community;Endophytes;Phyllosphere;Plant-microbe interactions;Wheat aphids

期刊名称： Environmental Microbiome

ISSN： 2524-6372

年卷期： 2023 年 18 卷 1 期

页码：

收录情况： SCIE（2023版）

摘要： Background: Leaf-associated microbes play an important role in plant development and response to exogenous stress. Insect herbivores are known to alter the phyllosphere microbiome. However, whether the host plant’s defense against insects is related to the phyllosphere microbiome remains mostly elusive. Here, we investigated bacterial communities in the phyllosphere and endosphere of eight wheat cultivars with differing aphid resistance, grown in the same farmland. Results: The bacterial community in both the phyllosphere and endosphere showed significant differences among most wheat cultivars. The phyllosphere was connected to more complex and stable microbial networks than the endosphere in most wheat cultivars. Moreover, the genera Pantoea, Massilia, and Pseudomonas were found to play a major role in shaping the microbial community in the wheat phyllosphere. Additionally, wheat plants showed phenotype-specific associations with the genera Massilia and Pseudomonas. The abundance of the genus Exiguobacterium in the phyllosphere exhibited a significant negative correlation with the aphid hazard grade in the wheat plants. Conclusion: Communities of leaf-associated microbes in wheat plants were mainly driven by the host genotype. Members of the genus Exiguobacterium may have adverse effects on wheat aphids. Our findings provide new clues supporting the development of aphid control strategies based on phyllosphere microbiome engineering.

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