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首页> 外文期刊>Journal of Experimental Botany >Hormonal and transcriptional profiles highlight common and differential host responses to arbuscular mycorrhizal fungi and the regulation of the oxylipin pathway
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Hormonal and transcriptional profiles highlight common and differential host responses to arbuscular mycorrhizal fungi and the regulation of the oxylipin pathway

机译：激素和转录谱突显了宿主对丛枝菌根真菌的常见和差异反应以及对脂蛋白途径的调节

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摘要

Arbuscular mycorrhizal (AM) symbioses are mutualistic associations between soil fungi and most vascular plants. The symbiosis significantly affects the host physiology in terms of nutrition and stress resistance. Despite the lack of host range specificity of the interaction, functional diversity between AM fungal species exists. The interaction is finely regulated according to plant and fungal characters, and plant hormones are believed to orchestrate the modifications in the host plant. Using tomato as a model, an integrative analysis of the host response to different mycorrhizal fungi was performed combining multiple hormone determination and transcriptional profiling. Analysis of ethylene-, abscisic acid-, salicylic acid-, and jasmonate-related compounds evidenced common and divergent responses of tomato roots to Glomus mosseae and Glomus intraradices, two fungi differing in their colonization abilities and impact on the host. Both hormonal and transcriptional analyses revealed, among others, regulation of the oxylipin pathway during the AM symbiosis and point to a key regulatory role for jasmonates. In addition, the results suggest that specific responses to particular fungi underlie the differential impact of individual AM fungi on plant physiology, and particularly on its ability to cope with biotic stresses.
机译：丛枝菌根（AM）共生是土壤真菌和大多数维管植物之间的相互联系。共生在营养和抗逆性方面显着影响宿主生理。尽管缺乏相互作用的宿主范围特异性，但AM真菌物种之间存在功能多样性。根据植物和真菌的特性，可以很好地调节相互作用，并且据信植物激素可以协调宿主植物中的修饰。以番茄为模型，结合多种激素测定和转录谱，对宿主对不同菌根真菌的反应进行了综合分析。对乙烯，脱落酸，水杨酸和茉莉酸酯相关化合物的分析表明，番茄根对Glomus mosseae和Glomus intraradices有共同和不同的反应，这两种真菌的定植能力和对寄主的影响不同。激素和转录分析都揭示了AM共生过程中羟脂蛋白途径的调控，并指出了茉莉酸酯的关键调控作用。此外，结果表明，对特定真菌的特异性反应是个体AM真菌对植物生理，尤其是其应对生物胁迫能力的不同影响的基础。

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