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DOI	10.1016/j.plaphy.2024.108415
	Pseudoxanthomonas sp. JBR18, a halotolerant endophytic bacterium, improves the salt tolerance of Arabidopsis seedlings
	Peng, Yuxin; Jiang, Lingmin; Jeon, Doeun; Cho, Donghyun; Kim, Youngmin; Kim, Cha Young; Lee, Ju Huck; Lee, Jiyoung
发表日期	2024
ISSN	0981-9428
EISSN	1873-2690
起始页码	207
卷号	207
英文摘要	Salinization of land is globally increasing due to climate change, and salinity stress is an important abiotic stressor that adversely affects agricultural productivity. In this study, we assessed a halotolerant endophytic bacterium, Pseudoxanthomonas sp. JBR18, for its potential as a plant growth-promoting agent with multiple beneficial properties. The strain exhibited tolerance to sodium chloride concentration of up to 7.5 % in the R2A medium. In vitro evaluation revealed that strain JBR18 possessed proteolytic, protease (EC 3.4), and cellulase (EC 3.2.1.4) activities, as well as the ability to produce indole-acetic acid, proline, and exopolysaccharides. Compared with the controls, co-cultivation of Arabidopsis seedlings with the strain JBR18 improved plant growth, rosette size, shoot and root fresh weight, and chlorophyll content under salinity stress. Moreover, JBR18inoculated seedlings showed lower levels of malondialdehyde, reactive oxygen species, and Na+ uptake into plant cells under salt stress but higher levels of K+. Additionally, seedlings inoculated with JBR18 exhibited a delayed response time and quantity of salt-responsive genes RD29A, RD29B, RD20, RD22, and KIN1 under salt stress. These multiple effects suggest that Pseudoxanthomonas sp. JBR18 is a promising candidate for mitigating the negative impacts of salinity stress on plant growth. Our findings may assist in future efforts to develop ecofriendly strategies for managing abiotic stress and enhancing plant tolerance to salt stress.
英文关键词	Plant growth -promoting bacteria; Salt stress; Halophyte -associated endophytic bacterium; Strain JBR18
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:001177936500001
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/297446
作者单位	Korea Research Institute of Bioscience & Biotechnology (KRIBB); Chonnam National University; University of Science & Technology (UST); University of Science & Technology (UST)
推荐引用方式 GB/T 7714	Peng, Yuxin,Jiang, Lingmin,Jeon, Doeun,et al. Pseudoxanthomonas sp. JBR18, a halotolerant endophytic bacterium, improves the salt tolerance of Arabidopsis seedlings[J],2024,207.
APA	Peng, Yuxin.,Jiang, Lingmin.,Jeon, Doeun.,Cho, Donghyun.,Kim, Youngmin.,...&Lee, Jiyoung.(2024).Pseudoxanthomonas sp. JBR18, a halotolerant endophytic bacterium, improves the salt tolerance of Arabidopsis seedlings.PLANT PHYSIOLOGY AND BIOCHEMISTRY,207.
MLA	Peng, Yuxin,et al."Pseudoxanthomonas sp. JBR18, a halotolerant endophytic bacterium, improves the salt tolerance of Arabidopsis seedlings".PLANT PHYSIOLOGY AND BIOCHEMISTRY 207(2024).