干旱区生态环境知识资源中心(Arid): Effect of the Plant Growth Promoting Rhizobacterium, Cronobacter sp. Y501, for Enhancing Drought Tolerance in Maize (Zea mays L.)

Arid

DOI	10.1007/s42729-023-01234-2
	Effect of the Plant Growth Promoting Rhizobacterium, Cronobacter sp. Y501, for Enhancing Drought Tolerance in Maize (Zea mays L.)
	Gao, Xiaoxiao; Luan, Jing; Wang, Lifei; Li, Hui; Wang, Qinghua; Wang, Zhiqin; Jin, Zhaoxia; Yu, Fang
通讯作者	Yu, F
来源期刊	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
ISSN	0718-9508
EISSN	0718-9516
出版年	2023
卷号	23 期号:2 页码:2786-2797
英文摘要	PurposeThis study aims to investigate the growth-promoting and stress-resistant effects of Cronobacter sp. Y501 on maize under drought conditions.MethodsMorphological and phylogenetic analyses were performed to identify bacterial strain Y501. Contents of chlorophyll and malondialdehyde (MDA), the activity of antioxidant enzymes, and phytohormone levels were detected by standard procedures to investigate the effects of Y501 on maize under water deficit conditions. Real-time PCR was conducted to analyze gene expression variations related to hormone regulation and signaling transduction in maize with Y501 inoculation.ResultsA plant growth-promoting rhizobacterium (PGPR) strain, Y501, was isolated and identified as Cronobacter sp.. Inoculation with Y501 optimized the growth attributes of maize, including biomass, plant height, and root viability under a drought environment. Application of Y501 led to a remarkable recovery in chlorophyll -a (19.23% increase compared to the control) and -b contents (36.12% increase compared to the control), decrease in MDA accumulation (44.07% decrease compared to the control), superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities (17.86%, 10.28%, and 27.35% decrease, respectively, compared to the control) under drought conditions, which showed that Y501 was responsible for the improved capacity of photosynthetic efficiency and osmotic adjustment in maize. Further investigations have validated that Y501 inhibited abscisic acid (ABA) signaling under drought conditions and had the ability for indole-3-acetic acid (IAA) biosynthesis in a tryptophan-dependent manner. Moreover, Y501 inoculation could regulate the expression of auxin transporters in maize under drought conditions for effectively utilizing exogenous IAA produced by Y501 to promote plant growth.ConclusionsThe present study has demonstrated the phytostimulation effects of Cronobacter sp. Y501 on maize plants responding to drought stress, which made the identified Y501 a potential bio-inoculant in arid areas.
英文关键词	Plant growth promoting rhizobacterium Maize Drought stress Growth attributes Antioxidant system ABA and IAA
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000966475500002
WOS关键词	STRESS RESISTANCE ; OSMOTIC-STRESS ; CROP PLANTS ; SPP. ; IDENTIFICATION ; TRANSCRIPTION ; PRODUCTIVITY ; RESPONSES
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397552
推荐引用方式 GB/T 7714	Gao, Xiaoxiao,Luan, Jing,Wang, Lifei,et al. Effect of the Plant Growth Promoting Rhizobacterium, Cronobacter sp. Y501, for Enhancing Drought Tolerance in Maize (Zea mays L.)[J],2023,23(2):2786-2797.
APA	Gao, Xiaoxiao.,Luan, Jing.,Wang, Lifei.,Li, Hui.,Wang, Qinghua.,...&Yu, Fang.(2023).Effect of the Plant Growth Promoting Rhizobacterium, Cronobacter sp. Y501, for Enhancing Drought Tolerance in Maize (Zea mays L.).JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION,23(2),2786-2797.
MLA	Gao, Xiaoxiao,et al."Effect of the Plant Growth Promoting Rhizobacterium, Cronobacter sp. Y501, for Enhancing Drought Tolerance in Maize (Zea mays L.)".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION 23.2(2023):2786-2797.