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Effects of cadmium stress on growth and amino acid metabolism in two Compositae plants
Zhu, Guangxu1,2; Xiao, Huayun1,3; Guo, Qingjun4; Zhang, Zhongyi1,3; Zhao, Jingjing1; Yang, Dan2
2018-08-30
Source PublicationECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
ISSN0147-6513
Volume158Pages:300-308
Corresponding AuthorZhu, Guangxu(zhugx.10b@igsnrr.ac.cn) ; Xiao, Huayun(xiaohuayun@vip.skleg.cn)
AbstractCadmium, 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.
KeywordAmino acid metabolism Cadmium stress Compositae plant Cd-hyperaccumulator
DOI10.1016/j.ecoenv.2018.04.045
WOS KeywordHEAVY-METALS ; ENZYME-ACTIVITIES ; TOXIC METALS ; PHYTOREMEDIATION ; TOLERANCE ; L. ; HISTIDINE ; RESPONSES ; NITROGEN ; CONTAMINATION
Indexed BySCI
Language英语
Funding ProjectNational 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]
Funding OrganizationNational 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
WOS Research AreaEnvironmental Sciences & Ecology ; Toxicology
WOS SubjectEnvironmental Sciences ; Toxicology
WOS IDWOS:000434494000037
PublisherACADEMIC PRESS INC ELSEVIER SCIENCE
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/54703
Collection中国科学院地理科学与资源研究所
Corresponding AuthorZhu, Guangxu; Xiao, Huayun
Affiliation1.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
Recommended Citation
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.
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