热带亚热带植物学报2025，Vol.33Issue(3)：282-288,7.DOI:10.11926/jtsb.4886
硼和半胱氨酸对水稻中氰化物吸收同化调控的综合效应研究
Synergistic Effect of Boron and Cysteine on the Regulation of Cyanide Absorption and Assimilation in Rice
摘要
Abstract
Nitrogen(N)is an essential element for plant growth and development,and lack of boron(B)will affect N metabolism in the body,forcing plants to obtain N sources from other ways.Non-toxic dose of cyanide(CN-)can provide auxiliary N source for plants through β-cyanoalanine synthetase(β-CAS)degradation pathway.Cysteine(Cys)is considered to be a limiting factor in the β-CAS pathway.In this study,rice(Oryza sativa)seedlings were treated with CN--B-Cys,CN-+B-Cys,CN--B+Cys and CN-+B+Cys to evaluate the combined regulatory effects of B and Cys on the absorption and assimilation of CN-in rice seedlings.The results showed that CN-absorption rate of rice seedlings treated with CN--B+Cys was the highest(P<0.05),followed by CN-+B+Cys.The residual concentration of CN-in rice seedlings treated with CN--B+Cys and CN-+B+Cys was significantly lower than that of other treatments(P<0.05).CN--B+Cys processing of rice seedlings have the highest CN-assimilation rate(P<0.05),followed by CN-+B+Cys,CN--B-Cys and CN-+B-Cys.Meanwhile,the NH4+absorption rate and assimilation rate of rice seedlings treated with CN--B+Cys were the highest(P<0.05),followed by CN-+B+Cys.Therefore,the addition of Cys and B deficiency treatment could promote the absorption and assimilation rate of CN-and NH4+in rice seedlings,and reduce the toxic damage of CN-to rice seedlings.关键词
铵/硼/氰化物/半胱氨酸/水稻/毒性效应Key words
Ammonium/Boron/Cyanide/Cysteine/Oryza sativa/Toxicity引用本文复制引用
康艺,李诚至,田鹏,彭晓英,于晓章..硼和半胱氨酸对水稻中氰化物吸收同化调控的综合效应研究[J].热带亚热带植物学报,2025,33(3):282-288,7.基金项目
国家自然科学基金项目(42277361)资助 This work was supported by the National Natural Science Foundation of China(Grant No.42277361). （42277361）
