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铜绿假单胞菌 LMG19424 菌株的 III 型蛋白分泌系统影响与银合欢共生。

The type 3 protein secretion system of Cupriavidus taiwanensis strain LMG19424 compromises symbiosis with Leucaena leucocephala.

机构信息

University of Geneva, Sciences III, Department of Botany and Plant Biology, Geneva, Switzerland.

出版信息

Appl Environ Microbiol. 2012 Oct;78(20):7476-9. doi: 10.1128/AEM.01691-12. Epub 2012 Aug 3.

DOI:10.1128/AEM.01691-12
PMID:22865066
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3457119/
Abstract

Cupriavidus taiwanensis forms proficient symbioses with a few Mimosa species. Inactivation of a type III protein secretion system (T3SS) had no effect on Mimosa pudica but allowed C. taiwanensis to establish chronic infections and fix nitrogen in Leucaena leucocephala. Unlike what was observed for other rhizobia, glutamate rather than plant flavonoids mediated transcriptional activation of this atypical T3SS.

摘要

台湾假单胞菌与少数含羞草属物种形成了高效共生关系。III 型蛋白分泌系统（T3SS）的失活对含羞草没有影响，但允许台湾假单胞菌在银合欢中建立慢性感染并固定氮。与其他根瘤菌不同的是，谷氨酸而不是植物类黄酮介导了这种非典型 T3SS 的转录激活。

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