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MAP18参与了脱落酸调控的拟南芥气孔关闭及根生长 被引量:3

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摘要 以拟南芥野生型、GFP-α-tubulin-6转基因拟南芥及微管结合蛋白MAP18相关突变体为材料,利用药理学试验及激光扫描共聚焦显微技术研究了在脱落酸(ABA)诱导叶片气孔关闭过程中保卫细胞微管骨架的动态变化、根生长情况及其可能的调控因子。结果表明,微管结合蛋白MAP18过表达拟南芥OE的叶片气孔关闭现象敏感,MAP18 RNAi沉默株R18现象相对不敏感。外源ABA抑制拟南芥幼苗初生根的生长试验中,突变体OE根伸长减慢的现象显著,伸长速率由0.60 cm/d降低至0.12 cm/d,未处理时WT、map18的伸长速率都要低于OE的伸长速率,而用5μmol/L ABA处理之后,WT、map18的伸长速率高于OE的伸长速率。在此基础上研究了参与其中的作用因子,推测MAP18通过影响微管的动态重组参与到ABA诱导拟南芥气孔关闭和根伸长的生理过程。
出处 《江苏农业科学》 北大核心 2015年第11期55-57,共3页 Jiangsu Agricultural Sciences
基金 国家自然科学基金(编号:31240035) 山东省自然科学基金(编号:ZR2010CQ002)
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参考文献18

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