干旱区生态环境知识资源中心(Arid): Restrictive water condition modifies the root exudates composition during peanut-PGPR interaction and conditions early events, reversing the negative effects on plant growth

Arid

DOI	10.1016/j.plaphy.2019.08.015
	Restrictive water condition modifies the root exudates composition during peanut-PGPR interaction and conditions early events, reversing the negative effects on plant growth
	Cesari, Adriana 1; Paulucci, Natalia 1; Lopez-Gomez, Miguel 2; Hidalgo-Castellanos, Javier 2; Lluch Pla, Carmen 2; Susana Dardanelli, Marta 1
通讯作者	Cesari, Adriana ; Susana Dardanelli, Marta
来源期刊	PLANT PHYSIOLOGY AND BIOCHEMISTRY
ISSN	0981-9428
出版年	2019
卷号	142 页码:519-527
英文摘要	Water deficit is one of the most serious environmental factors that affect the productivity of crops in the world. Arachis hypogaea is a legume with a high nutritional value and 70% is cultivated in semi-arid regions. This research aimed to study the effect of water deficit on peanut root exudates composition, analyzing the importance of exudates on peanut-PGPR interaction under restrictive water condition. Peanut seedlings were subjected to six treatments: 0 and 15 mM PEG, in combination with non-inoculated, Bradyrhizobium sp. and Bradyrhizobium-Azospirillum brasilense inoculated treatments. We analyzed the 7-day peanut root exudate in response to a water restrictive condition and the presence of bacterial inocula. Molecular analysis was performed by HPLC, UPLC and GC. Bacteria motility, chemotaxis, bacterial adhesion to peanut roots and peanut growth parameters were analyzed. Restrictive water condition modified the pattern of molecules exuded by roots, increasing the exudation of Naringenin, oleic FA, citric and lactic acid, and stimulation the release of terpenes of known antioxidant and antimicrobial activity. The presence of microorganisms modified the composition of root exudates. Water deficit affected the first events of peanut-PGPR interaction and the root exudates favored bacterial mobility, the chemotaxis and attachment of bacteria to peanut roots. Changes in the profile of molecules exuded by roots allowed A. hypogaea-Bradyrhizobium and A.hypogaea-Bradyrhizobium-Azospirillum interaction thus reversing the negative effects of restrictive water condition on peanut growth. These findings have a future potential application to improve plant-PGPR interactions under water deficit by formulating inoculants containing key molecules exuded during stress.
英文关键词	Arachis hypogaea Restrictive water condition Root exudate Rhizobacteria Early interaction events
类型	Article
语种	英语
国家	Argentina ; Spain
开放获取类型	Green Published
收录类别	SCI-E
WOS记录号	WOS:000487569200053
WOS关键词	ARACHIS-HYPOGAEA ; ORGANIC-ACIDS ; BRADYRHIZOBIUM ; CHEMOTAXIS ; NODULATION ; RHIZOBIUM ; MOLECULES ; DROUGHT ; SOIL ; GROUNDNUT
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218049
作者单位	1.Univ Nacl Rio Cuarto, Dept Biol Mol, CONICET, Inst Biotecnol Ambiental & Salud INBIAS, Cordoba, Argentina; 2.Univ Granada, Dept Fisiol Vegetal, Campus Fuentenueva, Granada, Spain
推荐引用方式 GB/T 7714	Cesari, Adriana,Paulucci, Natalia,Lopez-Gomez, Miguel,et al. Restrictive water condition modifies the root exudates composition during peanut-PGPR interaction and conditions early events, reversing the negative effects on plant growth[J],2019,142:519-527.
APA	Cesari, Adriana,Paulucci, Natalia,Lopez-Gomez, Miguel,Hidalgo-Castellanos, Javier,Lluch Pla, Carmen,&Susana Dardanelli, Marta.(2019).Restrictive water condition modifies the root exudates composition during peanut-PGPR interaction and conditions early events, reversing the negative effects on plant growth.PLANT PHYSIOLOGY AND BIOCHEMISTRY,142,519-527.
MLA	Cesari, Adriana,et al."Restrictive water condition modifies the root exudates composition during peanut-PGPR interaction and conditions early events, reversing the negative effects on plant growth".PLANT PHYSIOLOGY AND BIOCHEMISTRY 142(2019):519-527.