Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat
文献类型：期刊论文
| 作者 | Liu, XL; Zhang, SZ; Shan, XQ; Zhu, YG |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2005 |
| 卷号 | 61期号:2页码:293-301 |
| 关键词 | arsenite arsenate wheat germination relative root length relative shoot height amylolytic activity |
| 英文摘要 | Effects 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. |
| 学科主题 | Environmental Sciences & Ecology |
| 研究领域[WOS] | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000232498700017 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/23249]  |
| 专题 | 生态环境研究中心_环境化学与生态毒理学国家重点实验室 |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：生态环境研究中心
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