| Ca2+与植物抗旱性的关系 |
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| 引用本文： | 关军锋,李广敏.Ca2+与植物抗旱性的关系[J].植物学报,2001,18(4):473-478. |
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| 作者姓名： | 关军锋 李广敏 |
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| 作者单位： | (河北省农林科学院农业物理生理生化研究所 石家庄 050051) |
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| 摘 要： | 干旱是制约植物生长发育的主要逆境因素，并抑制根系对钙的吸收。近年来研究表明，外源钙能提高植株的抗旱性，抑制干旱胁迫下活性氧物质的生成，保护细胞质膜的结构，维持正常的光合作用，以及调节激素和一些重要的生化物质代谢；此外，细胞内Ca2+可作为第二信使传递干旱信号，调节干旱胁迫导致的生理反应。
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| 关 键 词： | Ca2+ 抗旱性 信号传递 |
| 收稿时间： | 2000-08-21 |
| 修稿时间： | 2000-09-12 |
The Relationship between Ca2+ and Drought_Resistance in Plants |
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| GUAN Jun_Feng LI Guang_Min.The Relationship between Ca2+ and Drought_Resistance in Plants[J].Bulletin of Botany,2001,18(4):473-478. |
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| Authors: | GUAN Jun_Feng LI Guang_Min |
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| Institution: | (Institute of Agro_Physics, Plant Physiology and Biochemistry, Hebei Academy of Agriculturaland Forestry Sciences, Shijiazhuang, 050051) |
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| Abstract: | Drought is a main stress factor that restricts growth and development in plants and inhibits Ca2+ uptake by root. Recent results showed that exogenous calcium could improve the drought_resistant capability, inhibit the production of active oxygen substances under drought stress, protect the structure of cell plasma membrane, maintain normal photosynthesis, and regulate metabolisms of horm
one and some important biochemical substances. Moreover, the internal cellular Ca2+ could act as a second messenger to transduct the drought signal, and regulate the physiological responses induced by drought stress. |
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| Keywords: | , |
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