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外源ABA、NO对葱鳞茎上气孔运动的影响 被引量:2

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摘要 以葱(Allium fistulosum)地下鳞茎为材料,观察气孔在鳞茎表皮的分布特点,研究了不同浓度、不同处理时间的外源ABA、NO对气孔关闭的影响,以及在ABA诱导的气孔关闭过程中NO与ABA之间的联系。结果表明,葱鳞茎下端外表皮上有气孔存在,气孔密度为37.74个/mm2,保卫细胞较大,多呈半圆形。NO和ABA单独使用均可明显诱导葱鳞茎表皮气孔关闭,并有浓度效应及时间效应。NO有加强ABA诱导的气孔关闭的作用。用ABA或NO处理表皮条的同时加入NO清除剂血红蛋白,能减轻ABA对气孔关闭的诱导作用,ABA和NO的信号交叉可能也存在于葱鳞茎外表皮的保卫细胞中。
出处 《江苏农业科学》 CSCD 北大核心 2011年第6期262-264,共3页 Jiangsu Agricultural Sciences
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参考文献18

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二级参考文献36

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