干旱区生态环境知识资源中心(Arid): Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain

Arid

DOI	10.1007/s11104-023-06443-3
	Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain
	Correa, Sulamita Santos; Pacheco, Rafael Sanches; Viana, Guilherme Caldieraro; Vidal, Marcia Soares; Xavier, Gustavo Ribeiro; de Araujo, Jean Luiz Simoes
通讯作者	de Araujo, JLS
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2024
卷号	498 期号:1-2 页码:391-408
英文摘要	Background and aimsDrought is one of the main causes of global crop decline. Plant growth-promoting rhizobacteria enhance plant tolerance to adverse environmental conditions. This study aimed to determine whether the rhizobacteria Microvirga vignae (BR 3296 and BR 3299) and Bradyrhizobium sp. (BR 3301) can maintain cowpea growth under drought stress.MethodsWe analyzed biomass, nodulation, nitrogen accumulation, and physiological traits of the inoculated plants. Rhizobacterial strains were assessed for exopolysaccharide (EPS) and indole acetic acid (IAA) production, growth, and biofilm formation in a water-stress medium induced by polyethylene glycol (PEG)-6000. The expression of genes associated with abscisic acid (ABA) biosynthesis in root nodules was also investigated.ResultsAll evaluated strains were grown in a culture medium supplemented with PEG. M. vignae strains exhibited increased biofilm formation and EPS production, while Bradyrhizobium showed high IAA production. Cowpea plants inoculated with Bradyrhizobium exhibit higher levels of nodulation, biomass, and nitrogen accumulation. Conversely, M. vignae strains were more efficient at alleviating drought stress and maintaining nodulation, biomass, nitrogen accumulation, and stomatal conductance similar to well-watered plants. Drought-inducible genes were more strongly upregulated in the nodules of plants inoculated with Bradyrhizobium than in those inoculated with M. vignae.ConclusionOur results suggest that M. vignae strains, isolated from a semi-arid region, help plants withstand water-stress, whereas the strain of Bradyrhizobium sp. isolated from a wet region did not effectively alleviate drought stress. However, Bradyrhizobium sp. conferred growth and nitrogen accumulation to cowpea superior to M. vignae and like plants supplied with nitrogen fertilizer.
英文关键词	Vigna unguiculata Drought stress Rhizobacteria PGPR Microvirga Bradyrhizobium
类型	Article
语种	英语
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:001124589300001
WOS关键词	ABSCISIC-ACID BIOSYNTHESIS ; ROOT-NODULE BACTERIA ; SP NOV. ; INDUCIBLE GENES ; PLANT-GROWTH ; WATER-STRESS ; L. ; EXPRESSION ; TOLERANCE ; DIVERSITY
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/405084
推荐引用方式 GB/T 7714	Correa, Sulamita Santos,Pacheco, Rafael Sanches,Viana, Guilherme Caldieraro,et al. Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain[J],2024,498(1-2):391-408.
APA	Correa, Sulamita Santos,Pacheco, Rafael Sanches,Viana, Guilherme Caldieraro,Vidal, Marcia Soares,Xavier, Gustavo Ribeiro,&de Araujo, Jean Luiz Simoes.(2024).Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain.PLANT AND SOIL,498(1-2),391-408.
MLA	Correa, Sulamita Santos,et al."Ability of nitrogen-fixing bacteria to alleviate drought stress in cowpea varies depending on the origin of the inoculated strain".PLANT AND SOIL 498.1-2(2024):391-408.