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种特异性微共生体识别由受体激酶介导。

Species-specific microsymbiont discrimination mediated by a receptor kinase.

机构信息

Department of Plant and Soil Sciences, University of Kentucky, Lexington, KY 40546, USA.

Institute of Plant Biology, HUN-REN Biological Research Centre, Szeged 6726, Hungary.

出版信息

Sci Adv. 2024 Aug 2;10(31):eadp6436. doi: 10.1126/sciadv.adp6436. Epub 2024 Jul 31.

DOI:10.1126/sciadv.adp6436
PMID:39083610
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11290524/
Abstract

Host range specificity is a prominent feature of the legume-rhizobial symbiosis. and are two closely related species that engage in root nodule symbiosis with legume plants of the genus, but certain species exhibit selectivity in their interactions with the two rhizobial species. We have identified a receptor-like kinase, which can discriminate between the two bacterial species, acting as a genetic barrier against infection by most strains. Activation of this receptor-mediated nodulation restriction requires a bacterial gene that encodes a glycine-rich octapeptide repeat protein with distinct variants capable of distinguishing from . This study sheds light on the coevolution of host plants and rhizobia, shaping symbiotic selectivity in their respective ecological niches.

摘要

宿主范围特异性是豆科植物-根瘤菌共生的一个显著特征。 和 是两种密切相关的物种，它们与豆科植物属的植物进行根瘤共生，但某些 物种在与这两种根瘤菌的相互作用中表现出选择性。我们已经鉴定出一种受体样激酶，它可以区分这两种细菌，充当遗传屏障，防止大多数 菌株的感染。这种受体介导的结瘤限制的激活需要一个细菌基因，该基因编码一个富含甘氨酸的八肽重复蛋白，具有不同的变体，能够区分 和 。这项研究揭示了宿主植物和根瘤菌的共同进化，塑造了它们在各自生态位中的共生选择性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/dae3c66a2cbb/sciadv.adp6436-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/471e51c8d36c/sciadv.adp6436-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/82879ac69b6a/sciadv.adp6436-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/b28f7ac7ff44/sciadv.adp6436-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/48301b3c8b07/sciadv.adp6436-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/dae3c66a2cbb/sciadv.adp6436-f5.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/471e51c8d36c/sciadv.adp6436-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/82879ac69b6a/sciadv.adp6436-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/b28f7ac7ff44/sciadv.adp6436-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/48301b3c8b07/sciadv.adp6436-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/b01f/11290524/dae3c66a2cbb/sciadv.adp6436-f5.jpg

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