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Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.).
Chemosphere. 2005 Aug; 60(6):802-9.C

Abstract

The uptake of atrazine by rice seedlings (Oryza sativa L.) through plant roots from nutrient solution was investigated in the presence and absence of Cd2+ over an exposure period of four weeks. It was found that both atrazine and Cd2+ were toxic to rice seedlings. Both shoot and root biomasses decreased when the seedlings were exposed to increasing atrazine or Cd2+ concentrations in nutrient solutions. In the absence of Cd2+, a linear relationship was observed between atrazine concentrations in roots/shoots and in external solution, and more atrazine is concentrated in roots than in shoots. When atrazine and Cd2+ concentrations in solution were maintained at mole ratio of 1:1, the accumulation of atrazine by seedlings was less and the seedling biomass was greater than found with other ratios, such as 1:2 or 2:1. Therefore, the formation of the complex between atrazine and Cd2+ reduced the individual toxicities. Analyses of data with the quasi-equilibrium partition model indicated that the atrazine concentrations in rice seedlings and external water were close to equilibrium. In the presence of Cd2+, however, the measured bioconcentration factor (BCF) of atrazine with roots and shoots were considerably greater. The latter findings resulted presumably from the atrazine-Cd2+ complex formation that led to a large apparent BCF.

Authors+Show Affiliations

Su YH
Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Zhu YG
No affiliation info available
Lin AJ
No affiliation info available
Zhang XH
No affiliation info available

MeSH

AtrazineCadmiumDrug InteractionsHerbicidesOryzaPlant RootsPlant ShootsSeedlingsSoil Pollutants

Pub Type(s)

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

Language

eng

PubMed ID

15936797

Citation

Su, Yu-Hong, et al. "Interaction Between Cadmium and Atrazine During Uptake By Rice Seedlings (Oryza Sativa L.)." Chemosphere, vol. 60, no. 6, 2005, pp. 802-9.
Su YH, Zhu YG, Lin AJ, et al. Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.). Chemosphere. 2005;60(6):802-9.
Su, Y. H., Zhu, Y. G., Lin, A. J., & Zhang, X. H. (2005). Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.). Chemosphere, 60(6), 802-9.
Su YH, et al. Interaction Between Cadmium and Atrazine During Uptake By Rice Seedlings (Oryza Sativa L.). Chemosphere. 2005;60(6):802-9. PubMed PMID: 15936797.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Interaction between cadmium and atrazine during uptake by rice seedlings (Oryza sativa L.). AU - Su,Yu-Hong, AU - Zhu,Yong-Guan, AU - Lin,Ai-Jun, AU - Zhang,Xu-Hong, PY - 2005/6/7/pubmed PY - 2005/12/13/medline PY - 2005/6/7/entrez SP - 802 EP - 9 JF - Chemosphere JO - Chemosphere VL - 60 IS - 6 N2 - The uptake of atrazine by rice seedlings (Oryza sativa L.) through plant roots from nutrient solution was investigated in the presence and absence of Cd2+ over an exposure period of four weeks. It was found that both atrazine and Cd2+ were toxic to rice seedlings. Both shoot and root biomasses decreased when the seedlings were exposed to increasing atrazine or Cd2+ concentrations in nutrient solutions. In the absence of Cd2+, a linear relationship was observed between atrazine concentrations in roots/shoots and in external solution, and more atrazine is concentrated in roots than in shoots. When atrazine and Cd2+ concentrations in solution were maintained at mole ratio of 1:1, the accumulation of atrazine by seedlings was less and the seedling biomass was greater than found with other ratios, such as 1:2 or 2:1. Therefore, the formation of the complex between atrazine and Cd2+ reduced the individual toxicities. Analyses of data with the quasi-equilibrium partition model indicated that the atrazine concentrations in rice seedlings and external water were close to equilibrium. In the presence of Cd2+, however, the measured bioconcentration factor (BCF) of atrazine with roots and shoots were considerably greater. The latter findings resulted presumably from the atrazine-Cd2+ complex formation that led to a large apparent BCF. SN - 0045-6535 UR - https://www.unboundmedicine.com/medline/citation/15936797/Interaction_between_cadmium_and_atrazine_during_uptake_by_rice_seedlings__Oryza_sativa_L___ DB - PRIME DP - Unbound Medicine ER -