RCEES OpenIR  > 环境化学与生态毒理学国家重点实验室
Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat
Liu, XL; Zhang, SZ; Shan, XQ; Zhu, YG
2005
Source PublicationCHEMOSPHERE
Volume61Issue:2Pages:293-301
AbstractEffects of different concentrations of arsenite and arsenate (0-16 mg/l) on seed germination, relative root length and shoot height, arsenic accumulation in young seedlings, alpha-amylase, beta-amylase and total amylolytic activity in wheat were investigated in order to elucidate the toxicity of arsenic in the early developmental stage. Germination percentages of different wheat varieties had different responses to arsenic species and decreased significantly with increasing arsenic concentrations except Duokang 1. Relative root length (RRL) and relative shoot height (RSH) of wheat seedlings decreased with increasing concentrations of arsenite and arsenate. The relative root lengths were correlated with the relative shoot heights for arsenite (r(2)=0.79) and arsenate (r(2)=0.77). Arsenic uptake by seedlings increased with the increasing concentrations of arsenite or arsenate and followed the Michaelis-Menten kinetics function. The average total amylolytic activity and P-amylase activity had no significant difference comparable to that of controls at the concentration <= 2 mg/l arsenite or arsenate, but decreased apparently when the concentration was higher than 2 mg/l. Whereas the a-amylase activity decreased with increasing concentrations of arsenite or arsenate over the whole concentration range. Arsenite decreased all the endpoints more remarkably than arsenate. In comparison, shoot height and root length were more sensitive to arsenic than other endpoints and might be used as indicators for arsenic toxicity. (C) 2005 Elsevier Ltd. All rights reserved.
Department环境化学与生态毒理学国家重点实验室
KeywordArsenite Arsenate Wheat Germination Relative Root Length Relative Shoot Height Amylolytic Activity
WOS Research AreaEnvironmental Sciences & Ecology
Citation statistics
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/23249
Collection环境化学与生态毒理学国家重点实验室
Recommended Citation
GB/T 7714
Liu, XL,Zhang, SZ,Shan, XQ,et al. Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat[J]. CHEMOSPHERE,2005,61(2):293-301.
APA Liu, XL,Zhang, SZ,Shan, XQ,&Zhu, YG.(2005).Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat.CHEMOSPHERE,61(2),293-301.
MLA Liu, XL,et al."Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat".CHEMOSPHERE 61.2(2005):293-301.
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