Root-Secreted Coumarins and the Microbiota Interact to Improve Iron Nutrition in Arabidopsis.
Root-Secreted Coumarins and the Microbiota Interact to Improve Iron Nutrition in Arabidopsis.
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根部分泌的香豆素和微生物群相互作用以改善拟南芥的铁营养。
DOI：
10.1016/j.chom.2020.09.006
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发表时间：
2020-12-09
影响因子：
30.3
通讯作者：
Schulze-Lefert P
中科院分区：
文献类型：
--
作者：
Harbort CJ;Hashimoto M;Inoue H;Niu Y;Guan R;Rombolà AD;Kopriva S;Voges MJEEE;Sattely ES;Garrido-Oter R;Schulze-Lefert P
植物受益于与根定殖微生物的多样性社区的关联。破译这些有益的服务的机制是提高植物生产力的兴趣。我们报告了拟南芥和根微生物群之间的植物有益的相互作用，铁剥夺依赖于植物来源的香豆素的分泌。破坏这一途径会改变微生物群，并损害铁限制土壤中的植物生长。此外，微生物群通过依赖于植物铁输入和香豆素秦皮甲素分泌的机制改善铁限制植物的性能。这种有益的性状是菌株特异性的，但在微生物群的系统发育谱系中是功能冗余的。转录组学和元素分析表明，这种相互作用之间的水杨酸和香豆素促进生长，缓解铁饥饿。这些结果表明，香豆素通过引发微生物辅助铁营养来改善植物性能。我们建议，细菌根微生物群，刺激分泌香豆素，是一个不可或缺的调解植物适应铁限制土壤。香豆素改变根部微生物群并改善铁限制性土壤中的植物生长微生物群通过香豆素依赖性机制改善植物铁营养有益铁的共生性状在分类学上广泛存在，但菌株特异性香豆素-微生物群相互作用可解决铁饥饿并调节免疫反应铁限制性土壤很普遍，导致植物生长和生产力的显着损失。Harbort等人表明在铁限制下，植物分泌的香豆素化合物是有益的植物-微生物群相互作用的介质。这些专门的代谢物改变了根微生物群的组成，并且是微生物群介导的植物铁吸收和免疫调节所必需的。
Plants benefit from associations with a diverse community of root-colonizing microbes. Deciphering the mechanisms underpinning these beneficial services are of interest for improving plant productivity. We report a plant-beneficial interaction between Arabidopsis thaliana and the root microbiota under iron deprivation that is dependent on the secretion of plant-derived coumarins. Disrupting this pathway alters the microbiota and impairs plant growth in iron-limiting soil. Furthermore, the microbiota improves iron-limiting plant performance via a mechanism dependent on plant iron import and secretion of the coumarin fraxetin. This beneficial trait is strain specific yet functionally redundant across phylogenetic lineages of the microbiota. Transcriptomic and elemental analyses revealed that this interaction between commensals and coumarins promotes growth by relieving iron starvation. These results show that coumarins improve plant performance by eliciting microbe-assisted iron nutrition. We propose that the bacterial root microbiota, stimulated by secreted coumarins, is an integral mediator of plant adaptation to iron-limiting soils. Coumarins alter the root microbiota and improve plant growth in iron-limiting soil The microbiota improves plant iron nutrition via a coumarin-dependent mechanism The iron-beneficial commensal trait is taxonomically widespread but strain specific Coumarin-microbiota interaction resolves iron starvation and regulates immune response Iron-limiting soils are widespread, causing significant losses in plant growth and productivity. Harbort et al. show that under iron limitation, plant-secreted coumarin compounds are mediators of a beneficial plant-microbiota interaction. These specialized metabolites alter root microbiota composition and are required for microbiota-mediated plant iron uptake and immune regulation.
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影响因子：
5.8
作者：
Gu, Zuguang;Eils, Roland;Schlesner, Matthias
通讯作者：
Schlesner, Matthias
DOI：
10.1073/pnas.1710455114
发表时间：
2017-10-31
影响因子：
11.1
作者：
Almario J;Jeena G;Wunder J;Langen G;Zuccaro A;Coupland G;Bucher M
通讯作者：
Bucher M
影响因子：
14.9
作者：
The Gene Ontology Consortium
通讯作者：
The Gene Ontology Consortium
影响因子：
48
作者：
Callahan BJ;McMurdie PJ;Rosen MJ;Han AW;Johnson AJ;Holmes SP
通讯作者：
Holmes SP
影响因子：
64.8
作者：
Bai, Yang;Mueller, Daniel B.;Schulze-Lefert, Paul
通讯作者：
Schulze-Lefert, Paul