| 外源NO和H2O2对洋葱鳞片外表皮气孔开度的调控 |
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| 引用本文： | 姜兆玉,余君彤,王永飞,谭建仪.外源NO和H2O2对洋葱鳞片外表皮气孔开度的调控[J].西北植物学报,2011,31(2):315-318. |
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| 作者姓名： | 姜兆玉 余君彤 王永飞 谭建仪 |
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| 作者单位： | 暨南大学,生物工程学系,广州,510632 |
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| 基金项目： | 国家大学生创新性试验计划 |
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| 摘 要： | 以洋葱(Allium cepa L.)肉质鳞片外表皮为材料,研究不同浓度及不同处理时间的外源NO和H2O2对洋葱鳞片外表皮上气孔开度的调节作用,并结合NO清除剂血红蛋白(Hb)和H2O2清除剂过氧化氢酶(CAT)研究调控过程中NO和H2O2的相互关系.结果显示:单独施用不同浓度的NO和H2O2均可诱导洋葱鳞片外表皮气孔不同程度关闭,并且浓度越大时间越长,其诱导气孔关闭效应越明显;NO和H2O2共同施用所诱导气孔关闭的效应大于其单独施用效应;Hb和CAT能明显减弱NO和H2O2诱导的气孔关闭.研究表明,NO和H2O2能有效诱导洋葱鳞片上气孔关闭,存在明显的浓度效应和时间效应,且两者可能互相依赖,具有协同效应.
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| 关 键 词： | NO H2O2 气孔关闭 洋葱 鳞片 |
Regulation of Stomatal Aperture on the Outer Surface of Allium cepa L. by Exogenous Nitric Oxide and Hydrogen Peroxide |
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| JIANG Zhao-yu,YU Jun-tong,WANG Yong-fei,TAN Jian-yi.Regulation of Stomatal Aperture on the Outer Surface of Allium cepa L. by Exogenous Nitric Oxide and Hydrogen Peroxide[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(2):315-318. |
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| Authors: | JIANG Zhao-yu YU Jun-tong WANG Yong-fei TAN Jian-yi |
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| Institution: | (Department of Biotechnology,Jinan University,Guangzhou 510632,China) |
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| Abstract: | Using the outer surface of bulb scale of Allium cepa as the experimental material,we studied the effect of exogenous NO and H2O2 with different concentrations and different treated time on its regulation of stomatal aperture and their correlation.The results indicated that NO and H2O2 could induce various degrees of stomatal closure in dose-and time-dependently.The effects of the mixed solution of NO and H2O2 were greater than those of the individual processing.NO scavenger Hb and H2O2 scavenger CAT could weaken the effect of NO or H2O2 significantly.This showed that the stomatal closure could be co-induced by NO and H2O2. |
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| Keywords: | NO H2O2 |
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