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Lysobacter gummosus OH17 induces systemic resistance in Oryza sativa 'Nipponbare'

文献类型： 外文期刊

作者： Laborda, Pedro 1 ; Chen, Xian 2 ; Wu, Guichun 2 ; Wang, Suyan 1 ; Lu, Xiaofeng 1 ; Ling, Jun 2 ; Li, Kaihuai 2 ; Liu, Fen 1 ;

作者机构： 1.Nantong Univ, Sch Life Sci, Nantong, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Plant Protect, Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety,State Key Lab, Nanjing 210014, Peoples R China

关键词： growth-promoting rhizobacteria; induced systemic resistance; Lysobacter species; Oryza sativa; plant-bacteria interaction

期刊名称：PLANT PATHOLOGY （ 影响因子：2.59； 五年影响因子：2.924 ）

ISSN： 0032-0862

年卷期：

页码：

收录情况： SCI

摘要： Although rice is one of the most cultivated, consumed, and essential crops worldwide, it is highly susceptible to a wide range of bacterial and fungal pathogens that significantly reduce the production and quality of rice. Recently, our research group reported that the plant growth-promoting rhizobacterium Lysobacter gummosus OH17 was able to enhance the ethylene levels in Oryza sativa 'Nipponbare' plants at the late interaction stages. In this work, L. gummosus OH17 was found to be capable of inducing the overexpression of relevant genes of the jasmonic acid and ethylene transduction pathways in Nipponbare plants, such as OsACC, OsACO, OsERF3, and OsLOX, which resulted in the up-regulation of a number of pathogenesis-related proteins. The observed metabolic effects enhanced the disease resistance of rice against the three most devastating rice pathogens: Magnaporthe oryzae causing rice blast, Rhizoctonia solani causing rice sheath blight, and Xanthomonas oryzae pv. oryzae causing bacterial leaf blight. Furthermore, it was shown that L. gummosus OH17 also enhanced ethylene production levels in other O. sativa varieties from both the japonica and indica subspecies. Here, we report for the first time the metabolic alterations produced by plant growth-promoting rhizobacterium L. gummosus OH17 at the late interaction stages and how these alterations induce systemic resistance.

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