干旱区生态环境知识资源中心(Arid): Drought-tolerant plant growth-promoting rhizobacteria isolated from jujube (Ziziphus jujuba) and their potential to enhance drought tolerance

Arid

DOI	10.1007/s11104-020-04582-5
	Drought-tolerant plant growth-promoting rhizobacteria isolated from jujube (Ziziphus jujuba) and their potential to enhance drought tolerance
	Zhang, Min 1,2,3; Yang, Lin 1,2,3; Hao, Ruqian 1,2,3; Bai, Xiaoxiong 1,2,3; Wang, Ying 1,2,3; Yu, Xuan 1,2,3
通讯作者	Yu, Xuan
来源期刊	PLANT AND SOIL
ISSN	0032-079X
EISSN	1573-5036
出版年	2020
卷号	452 期号:1-2 页码:423-440
英文摘要	Background and aims Plant growth-promoting rhizobacteria (PGPR) have important roles in improving plant growth and alleviating stress induced damage under drought stress conditions. The aims of this study are: 1) to isolate and identify drought-tolerant PGPR from rhizosphere soil of jujube, a drought-tolerant plant grown in semi-arid and arid regions; and 2) to evaluate the effects of inoculation with the isolated strains on the growth and physiological responses of jujube seedlings under drought stress conditions. Methods Rhizosphere bacteria with 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity were isolated from the rhizosphere of jujube and were identified by 16S rDNA sequencing analysis. Then, the isolates were screened for drought tolerance and plant growth promoting activities. The growth and physiological changes of jujube under drought stress, including the plant height, shoot and root dry matter, malondialdehyde (MDA), indoleacetic acid (IAA), abscisic acid (ABA) content, superoxide dismutase (SOD), and peroxidase (POD) activity, were also detected. Results Eight ACC deaminase-producing bacterial strains were isolated and identified as Pseudomonas, Bacillus, and Serratia. Under drought stress conditions, Pseudomonas lini and Serratia plymuthica significantly increased plant height, shoot and root dry matter, and relative water content. Moreover, malondialdehyde and ABA levels were decreased, and antioxidant enzyme activities were increased. In addition, they also enhanced soil aggregate stability. The best effect was observed with mixed inoculation. Conclusions Strains of Pseudomonas lini and Serratia plymuthica played an important role in enhancing tolerance of jujube seedling and can be considered as promising bioinoculants of jujube.
英文关键词	Plant growth-promoting rhizobacteria (PGPR) 1-aminocyclopropane-1-carboxylate (ACC) deaminase Drought stress Ziziphus jujuba Pseudonomas sp Serratia sp
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000538839300001
WOS关键词	DEAMINASE PRODUCING PGPR ; WHEAT TRITICUM-AESTIVUM ; ACC DEAMINASE ; STRESS TOLERANCE ; LOESS PLATEAU ; ABSCISIC-ACID ; L. SEEDLINGS ; SALT STRESS ; MAIZE ; SOIL
WOS类目	Agronomy ; Plant Sciences ; Soil Science
WOS研究方向	Agriculture ; Plant Sciences
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319300
作者单位	1.Northwest A&F Univ, Coll Forestry, Dept Forestry, Yangling, Shaanxi, Peoples R China; 2.Key Comprehens Lab Forestry, Yangling, Shaanxi, Peoples R China; 3.Key Lab Silviculture Loess Plateau State Forestry, Yangling, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Min,Yang, Lin,Hao, Ruqian,et al. Drought-tolerant plant growth-promoting rhizobacteria isolated from jujube (Ziziphus jujuba) and their potential to enhance drought tolerance[J]. 西北农林科技大学,2020,452(1-2):423-440.
APA	Zhang, Min,Yang, Lin,Hao, Ruqian,Bai, Xiaoxiong,Wang, Ying,&Yu, Xuan.(2020).Drought-tolerant plant growth-promoting rhizobacteria isolated from jujube (Ziziphus jujuba) and their potential to enhance drought tolerance.PLANT AND SOIL,452(1-2),423-440.
MLA	Zhang, Min,et al."Drought-tolerant plant growth-promoting rhizobacteria isolated from jujube (Ziziphus jujuba) and their potential to enhance drought tolerance".PLANT AND SOIL 452.1-2(2020):423-440.