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Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat.
Chemosphere. 2005 Oct; 61(2):293-301.C

Abstract

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 (r2 = 0.79) and arsenate (r2 = 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 beta-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 alpha-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.

Authors+Show Affiliations

Liu X
State Key Laboratory of Environmental Toxicology and Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, P.O. Box 2871, Beijing 100085, China.
Zhang S
No affiliation info available
Shan X
No affiliation info available
Zhu YG
No affiliation info available

MeSH

ArsenatesArsenitesGerminationPlant RootsSeedlingsSeedsSoil PollutantsTriticumalpha-Amylasesbeta-Amylase

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16168752

Citation

Liu, Xiaoli, et al. "Toxicity of Arsenate and Arsenite On Germination, Seedling Growth and Amylolytic Activity of Wheat." Chemosphere, vol. 61, no. 2, 2005, pp. 293-301.
Liu X, Zhang S, Shan X, et al. Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat. Chemosphere. 2005;61(2):293-301.
Liu, X., Zhang, S., Shan, X., & Zhu, Y. G. (2005). Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat. Chemosphere, 61(2), 293-301.
Liu X, et al. Toxicity of Arsenate and Arsenite On Germination, Seedling Growth and Amylolytic Activity of Wheat. Chemosphere. 2005;61(2):293-301. PubMed PMID: 16168752.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Toxicity of arsenate and arsenite on germination, seedling growth and amylolytic activity of wheat. AU - Liu,Xiaoli, AU - Zhang,Shuzhen, AU - Shan,Xiaoquan, AU - Zhu,Yong-Guan, PY - 2004/06/11/received PY - 2004/12/23/revised PY - 2005/01/13/accepted PY - 2005/9/20/pubmed PY - 2005/11/15/medline PY - 2005/9/20/entrez SP - 293 EP - 301 JF - Chemosphere JO - Chemosphere VL - 61 IS - 2 N2 - 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 (r2 = 0.79) and arsenate (r2 = 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 beta-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 alpha-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. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/16168752/Toxicity_of_arsenate_and_arsenite_on_germination_seedling_growth_and_amylolytic_activity_of_wheat_ DB - PRIME DP - Unbound Medicine ER -