Effects of Exogenous Organic Acids on Cd Tolerance Mechanism of Salix variegata Franch. Under Cd Stress

doi:10.3389/fpls.2020.594352

	Effects of Exogenous Organic Acids on Cd Tolerance Mechanism of Salix variegata Franch. Under Cd Stress
	Zhang, Songlin 2,3; Chen, Hongchun 1,2; He, Danni 2; He, Xinrui 2; Yan, Ya 1; Wu, Kejun 2; Wei, Hong 2
刊名	FRONTIERS IN PLANT SCIENCE
	2020-10-23
卷号	11 页码:13
关键词	cadmium Salix variegata organic acid antioxidant enzymatic system non-protein sulfhydryl compounds gene expression
ISSN号	1664-462X
DOI	10.3389/fpls.2020.594352
通讯作者	Wei, Hong(weihong@swu.edu.cn)
英文摘要	Chelate induction of organic acids has been recognized to enhance metal uptake and translocation in plants, but the underlying mechanism remains unclear. In this study, seedlings of Salix variegata were hydroponically exposed to the combinations of Cd (0 and 50 mu M) and three exogenous organic acids (100 mu M of citric, tartaric, or malic acid). Plant biomass, antioxidant enzymes, non-protein thiol compounds (NPT) content, and the expression of candidate genes associated with Cd accumulation and tolerance were determined. Results showed that Cd significantly inhibited plant biomass but stimulated the activity of antioxidant enzymes in the roots and leaves, while the lipid peroxidation increased as well. Respective addition of three organic acids greatly enhanced plant resistance to oxidative stress and reduced the lipid peroxidation induced by Cd, with the effect of malic acid showing greatest. The addition of organic acids also significantly increased the content of glutathione in the root, further improving the antioxidant capacity and potential of phytochelatin biosynthesis. Moreover, Cd induced the expression level of candidate genes in roots of S. variegata. The addition of three organic acids not only promoted the expression of candidate genes but also drastically increased Cd accumulation in S. variegata. In summary, application of citric, tartaric, or malic acid alleviated Cd-imposed toxicity through the boost of enzymatic and non-enzymatic antioxidants and candidate gene expression, while their effects on Cd tolerance and accumulation of S. variegata differed.
资助项目	National Key Research and Development Program of China[2017YFC0505305] ; Southwest University Intelligent Ecological and Environmental Protection Discipline Funding
WOS研究方向	Plant Sciences
语种	英语
出版者	FRONTIERS MEDIA SA
WOS记录号	WOS:000587015100001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/12276]
专题	中国科学院重庆绿色智能技术研究院
通讯作者	Wei, Hong
作者单位	1.Guizhou Prov Water Conservancy Res Inst, Guiyang, Peoples R China 2.Southwest Univ, Key Lab Ecoenvironm Gorges Reservoir Reg 3, Chongqing Key Lab Plant Ecol & Resources Res Gorg, Minist Educ,Sch Life Sci, Chongqing, Peoples R China 3.Chinese Acad Sci, Key Lab Reservoir Aquat Environm, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Songlin,Chen, Hongchun,He, Danni,et al. Effects of Exogenous Organic Acids on Cd Tolerance Mechanism of Salix variegata Franch. Under Cd Stress[J]. FRONTIERS IN PLANT SCIENCE,2020,11:13.
APA	Zhang, Songlin.,Chen, Hongchun.,He, Danni.,He, Xinrui.,Yan, Ya.,...&Wei, Hong.(2020).Effects of Exogenous Organic Acids on Cd Tolerance Mechanism of Salix variegata Franch. Under Cd Stress.FRONTIERS IN PLANT SCIENCE,11,13.
MLA	Zhang, Songlin,et al."Effects of Exogenous Organic Acids on Cd Tolerance Mechanism of Salix variegata Franch. Under Cd Stress".FRONTIERS IN PLANT SCIENCE 11(2020):13.