Effects of cadmium-resistant fungi Aspergillus aculeatus on metabolic profiles of bermudagrass [Cynodondactylon (L.)Pers.] under Cd stress

doi:10.1016/j.plaphy.2017.02.014

CORC > 武汉植物园 > 中国科学院武汉植物园

	Effects of cadmium-resistant fungi Aspergillus aculeatus on metabolic profiles of bermudagrass [Cynodondactylon (L.)Pers.] under Cd stress
	Li, Xiaoning 1,2; Gitau, Margaret Mukami 1,2; Han, Shijuan 1,2; Fu, Jinmin 2; Xie, Yan 2
刊名	PLANT PHYSIOLOGY AND BIOCHEMISTRY
	2017-05-01
卷号	114 页码:38-50
关键词	Bermudagrass Cadmium Aspergillus aculeatus Metabolites
ISSN号	0981-9428
DOI	10.1016/j.plaphy.2017.02.014
英文摘要	Plants' tolerance to heavy metal stress may be induced by the exploitation of microbes. The objectives of this study were to investigate the effect of cadmium (Cd)-resistant fungus, Aspergillus aculeatus, on tolerance to Cd and alteration of metabolites in bermudagrass under Cd stress, and identify the predominant metabolites associated with Cd tolerance. Two genotypes of bermudagrass with contrasting Cd tolerance (Cd-sensitive 'WB92' and Cd-tolerant 'WB242') were exposed to 0, 50, 150 and 250 mg kg(-1) Cd for 21 days. Physiological responses of bermudagrass to Cd stress were evaluated based on the relative growth rate (RGR) and normalized relative transpiration rate (NRT). Plants inoculated with A. aculeatus exhibited higher RGR and NRT under Cd stress than those of non-inoculated plants, regardless of genotypes. A total of 32 Cd-responsive metabolites in leaves and 21 in roots were identified in the two genotypes, including organic acids, amino acids, sugars, and fatty acids and others. Interestingly, under Cd stress, the leaves of inoculated 'WB92' accumulated less citric acid, aspartic acid, glutamic acid, sucrose, galactose, but more sorbose and glucose, while inoculated 'WB242' leaves had less citric acid, malic acid, sucrose, sorbose, but more fructose and glucose, compared to non-inoculated plants. In 'WB92' roots, the A. aculeatus reduced mannose content, but increased trehalose and citric acid content, while in 'WB242', it decreased sucrose, but enhanced citric acid content, compared to Cd regime. The results of this study suggest that A. aculeatus may induce accumulation of different metabolites associated with Cd tolerance in bermudagrass. (C) 2017 Elsevier Masson SAS. All rights reserved.
资助项目	Young Scientists Fund of the National Natural Science Foundation of China[31502009] ; National Natural Science Foundation of China[31272194]
WOS研究方向	Plant Sciences
语种	英语
出版者	ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
WOS记录号	WOS:000399506300005
内容类型	期刊论文
源URL	[http://202.127.146.157/handle/2RYDP1HH/1381]
专题	中国科学院武汉植物园
通讯作者	Fu, Jinmin; Xie, Yan
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan Bot Garden, Wuhan 430074, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaoning,Gitau, Margaret Mukami,Han, Shijuan,et al. Effects of cadmium-resistant fungi Aspergillus aculeatus on metabolic profiles of bermudagrass [Cynodondactylon (L.)Pers.] under Cd stress[J]. PLANT PHYSIOLOGY AND BIOCHEMISTRY,2017,114:38-50.
APA	Li, Xiaoning,Gitau, Margaret Mukami,Han, Shijuan,Fu, Jinmin,&Xie, Yan.(2017).Effects of cadmium-resistant fungi Aspergillus aculeatus on metabolic profiles of bermudagrass [Cynodondactylon (L.)Pers.] under Cd stress.PLANT PHYSIOLOGY AND BIOCHEMISTRY,114,38-50.
MLA	Li, Xiaoning,et al."Effects of cadmium-resistant fungi Aspergillus aculeatus on metabolic profiles of bermudagrass [Cynodondactylon (L.)Pers.] under Cd stress".PLANT PHYSIOLOGY AND BIOCHEMISTRY 114(2017):38-50.