| 不同因素对水稻离体根吸收四价硒影响 |
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| 引用本文： | 张联合,施卫明,王校常. 不同因素对水稻离体根吸收四价硒影响[J]. 土壤, 2006, 38(4): 417-421 |
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| 作者姓名： | 张联合 施卫明 王校常 |
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| 作者单位： | 1. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008;河南科技大学,河南,洛阳,471003
2. 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所),南京,210008 |
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| 摘 要： | 研究结果显示,pH对水稻离体根吸收4价硒(Se)有显著影响,这与不同pH下4价Se的存在形式有关。进一步研究表明,低温抑制4价Se吸收和一定浓度的NaCl促进4价Se吸收,可能在于低温和NaCl影响到根内代谢而间接影响4价Se吸收,而P抑制4价Se吸收可能与二者拥有共同吸附位点有关。
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| 关 键 词： | 四价硒 离体根 吸收 影响 |
Effects of Various Factors on Selenite Uptake of Excised Rice Roots |
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| ZHANG Lian-he,SHI Wei-ming and WANG Xiao-chang. Effects of Various Factors on Selenite Uptake of Excised Rice Roots[J]. Soils, 2006, 38(4): 417-421 |
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| Authors: | ZHANG Lian-he SHI Wei-ming WANG Xiao-chang |
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| Affiliation: | State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China;Henan University of Science and Technology, Luoyang, Henan 471003, China,State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China and State Key Laboratory of Soil and Sustainable Agriculture(Institute of Soil Science, Chinese Academy of Sciences), Nanjing 210008, China |
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| Abstract: | An experiment was carried out on effects of various factors on selenite uptake of excised rice roots. Results indicated that pH affected selenite uptake of excised rice roots significantly, which, however, was linked to forms of selenite. Low temperature inhibited uptake of selenite, but NaCl of a certain concentration promoted the uptake because temperature and NaCl might have an indirect effect on uptake of selenite by affecting metabolisms of the roots. The inhibition of selenite uptake by phosphate might relate to sharing of common absorption sites on root surface with selenite. |
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| Keywords: | Selenite Excised roots Uptake Effect |
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