【摘 要】
：
研究了Ca2+ 对番茄(Lycopersicon esculentum Mill cv. Lichun)黄化幼苗乙烯反应的影响.通过测定不同Ca2+ 浓度条件下番茄黄化幼苗的"三重反应"、内源乙烯释放量、乙烯受体基
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研究了Ca2+ 对番茄(Lycopersicon esculentum Mill cv. Lichun)黄化幼苗乙烯反应的影响.通过测定不同Ca2+ 浓度条件下番茄黄化幼苗的"三重反应"、内源乙烯释放量、乙烯受体基因NEVER-RIPE(NR)表达量及胞内CaM含量的变化,结果发现,随着培养基中Ca2+ 浓度从0 mmol/L增加到3.8 mmol/L,番茄黄化幼苗的"三重反应"表型明显增强,内源乙烯释放量、NR基因的表达量及胞内CaM的含量都有不同程度的增加;当Ca2+ 浓度由3.8 mmol/L进一步增加到10 mmol/L时,番茄黄化幼苗"三重反应"表型受到抑制,内源乙烯释放量、 NR基因的表达量及胞内CaM的含量都有所下降.因此,Ca2+ 对番茄黄化幼苗"三重反应"的影响与Ca2+ 调节内源乙烯合成和乙烯受体基因的表达有关,而且Ca2+ 可能是通过CaM含量的变化来调节乙烯作用的.
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