Effects of cadmium stress on growth and amino acid metabolism in two Compositae plants

doi:10.1016/j.ecoenv.2018.04.045

	Effects of cadmium stress on growth and amino acid metabolism in two Compositae plants
	Zhu, Guangxu 1,2; Xiao, Huayun 1,3; Guo, Qingjun 4; Zhang, Zhongyi 1,3; Zhao, Jingjing 1; Yang, Dan 2
刊名	ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
	2018-08-30
卷号	158 页码:300-308
关键词	Amino acid metabolism Cadmium stress Compositae plant Cd-hyperaccumulator
ISSN号	0147-6513
DOI	10.1016/j.ecoenv.2018.04.045
通讯作者	Zhu, Guangxu(zhugx.10b@igsnrr.ac.cn) ; Xiao, Huayun(xiaohuayun@vip.skleg.cn)
英文摘要	Cadmium, a high toxic heavy metal, is one of the most serious contaminants in soil and a potential threat to plant growth and human health. Amino acid metabolism has the central role in heavy metal stress resistance of plants. In this paper, a pot experiment was carried out to study the effects of different concentrations of cadmium (0, 3, 6, 12, 30 mg kg(-1)) on the growth, Cd accumulation and amino acid metabolism in two Compositae plants (Ageratum conyzoides L. and Crassocephalwn crepidioides). The results showed that under cadmium stress, C. crepidioides accumulated more Cd in its shoot and was tolerant to Cd, whereas its low Cd-accumulating relative, A. conyzoides, suffered reduced growth. The Cd content in the aerial part of C. crepidioides exceeded the threshold of Cd-hyperaccumulator. Furthermore, the bioaccumulation factor (BCF) and biological transfer factor (BTF) values for Cd in C. crepidioides were > 1. Thus, C. crepidioides can be regarded as Cd-hyperaccumulator. The comparison between both studied plants indicated that Cd stress resulted in a differential but coordinated response of amino acid levels, which are playing a significant role in plant adaptation to Cd stress. Glu, Gln, Asp, Asn, Gaba, Val and Ala dominated the major amino acids. Higher Cd tolerance and Cd accumulation in C. crepidioides was associated with greater accumulation of free amino acids, especially for Gln and Asn, in C. crepidioides than in A. conyzoides.
资助项目	National Natural Science Foundation of China[41425014] ; National Natural Science Foundation of China[41625006] ; National Natural Science Foundation of China[31600442] ; China Postdoctoral Science Foundation[2015M582578] ; National Key Research and Development Program of China[2016YFA0601000] ; Development Services of Feature Institute Program of Chinese Academy of Sciences[TSYJS01] ; Joint Funds of the Natural Science Foundation of Science and Technology Department of Guizhou Province, China[LH [2014] 7168]
WOS关键词	HEAVY-METALS ; ENZYME-ACTIVITIES ; TOXIC METALS ; PHYTOREMEDIATION ; TOLERANCE ; L. ; HISTIDINE ; RESPONSES ; NITROGEN ; CONTAMINATION
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
语种	英语
出版者	ACADEMIC PRESS INC ELSEVIER SCIENCE
WOS记录号	WOS:000434494000037
资助机构	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; National Key Research and Development Program of China ; Development Services of Feature Institute Program of Chinese Academy of Sciences ; Joint Funds of the Natural Science Foundation of Science and Technology Department of Guizhou Province, China
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/54702]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhu, Guangxu; Xiao, Huayun
作者单位	1.Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China 2.Guiyang Univ, Coll Biol & Environm Engn, Guiyang 550005, Guizhou, Peoples R China 3.East China Univ Technol, Key Lab Nucl Resource & Environm, Lab Atmospher Environm, Nanchang 330013, Jiangxi, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Ctr Environm Remediat, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Guangxu,Xiao, Huayun,Guo, Qingjun,et al. Effects of cadmium stress on growth and amino acid metabolism in two Compositae plants[J]. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,2018,158:300-308.
APA	Zhu, Guangxu,Xiao, Huayun,Guo, Qingjun,Zhang, Zhongyi,Zhao, Jingjing,&Yang, Dan.(2018).Effects of cadmium stress on growth and amino acid metabolism in two Compositae plants.ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY,158,300-308.
MLA	Zhu, Guangxu,et al."Effects of cadmium stress on growth and amino acid metabolism in two Compositae plants".ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 158(2018):300-308.