【摘要】 对拟南芥野生型Ws及其G蛋白α亚基突变体gpa1 1和gpa1 2的形态特征进行了比较,并研究了低温处理对其抗氧化酶系活力和丙二醛含量的差异。结果表明,与野生型相比,两突变体形态上发生了较大的变化,并表现出对低温反应敏感性的降低。低温12h时,野生型的SOD酶和POD酶活迅速发生变化,丙二醛含量迅速升高,而两突变体变化较平缓。更多还原

【Abstract】 The morphological and physiological characteristics of Ws(Wild type) and its mutant gpa1-1 and gpa1-2 of Arabidopsis thaliana were studied,and the differences between the wild type and mutants under cold stress were also researched.Results showed that two mutants had obviously morphological difference and decreased sensitivity to chilling resistance,which indicated that Gα may play some role in the signal transduction related to chilling-resistance in Arabidopsis thaliana.更多还原