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Enhanced H^+ transport activity of tonoplast vesicles isolated from roots of salt-tolerant mutant of wheat under NaCl stress 被引量:2
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作者 fangqing guo Zhangcheng Tang 《Chinese Science Bulletin》 SCIE EI CAS 1999年第13期1198-1201,共4页
Both enhanced were H^+ transport activities of tonoplast vesicles isolated from roots of the salt-tolerant mutant and wild type of wheat with treatment of NaCI, but the activity of the mutant was significantly higher ... Both enhanced were H^+ transport activities of tonoplast vesicles isolated from roots of the salt-tolerant mutant and wild type of wheat with treatment of NaCI, but the activity of the mutant was significantly higher than that of wild type. H^+ transport activity was indicated as the stable value of fluorescence quenching per mg membrane proteins. The H^+ transport activities dependent on ATP of the mutant and wild type were 1099 and 558 respectively and their activities dependent on PPi were 358 and 228 separately. 展开更多
关键词 SALT-TOLERANT MUTANT of WHEAT TONOPLAST proton transport NaCl stress.
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Reduced Na^+ and K^+ permeability of K^+ channel in plasma membrane isolated from roots of salt-tolerant mutant of wheat
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作者 fangqing guo Zhangcheng Tang 《Chinese Science Bulletin》 SCIE EI CAS 1999年第9期816-821,共6页
The Na^+ and K^+ permeability of K^+ channel in plasma membrane, isolated from roots of the salt-tolerant mutant of ,wheat, was lower than that of wild type in 100 mmol/L KCI and NaCI solution. The opening frequency o... The Na^+ and K^+ permeability of K^+ channel in plasma membrane, isolated from roots of the salt-tolerant mutant of ,wheat, was lower than that of wild type in 100 mmol/L KCI and NaCI solution. The opening frequency of K^+ channel of the mutant reduced more significantly than that of wild type in two kinds of solution mentioned above. It is assumed that the reduction of opening frequency mainly contributes to the Na^+ and K^+ permeability of K^+ channel of the mutant. The electric conductance of single-channel of the mutant was similar to that of wild type and the main difference between them was exhibited as the opening frequency. Their K^+/Ka^+ selectivity of K^+ channel had no significant difference. The K^+/Na^+ selectivity of the mutant and wild type was 3.35 and 3. 18 respectively. 展开更多
关键词 WHEAT SALT-TOLERANT MUTANT plasma membrane salt adaptation.
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