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种子活力与生物膜的研究现状 预览 被引量:22

Advances on Relation-ship Between Biomembrane and Seed Vigor
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摘要 种子活力与生物膜的结构和功能密切相关。活力高的种子,膜结构比较完整,在吸水时,膜系统恢复的速度较快,并且修复的较完善。研究表明,超干和引发处理可使膜结构得到保持与修复,很多种类的物质参与了膜结构的保护,例如可溶性糖、蛋白质(包括酶)、两性分子、Ca^2+、多胺及其他非酶促自由基清除系统等,保护物质协同作用,稳定膜脂及膜蛋白的结构,保持膜系统的完整性,使膜功能得以正常发挥,强化了种子活力。 Seed vigor is highly correlated with the structure and function of biomembrane. Mem- brane structure of higher vigor seed is more integrated, and restored more rapidly and perfectly when the seed absorbs water. Last results showed that desiccation and priming could make the membrane structure to be preserved and restored. Many kinds of substances protect the membrane structure, such as soluble sugars, proteins(include enzymes), amphiphilic molecules, calcium ion, polyamine and other radical cleared system of nonenzyme katalyst, etc. These protective substances coop- erate together to stabilize the structure of membrane lipids and proteins, and to keep the inte- grality of membrane structure, so the membrane function can exert normally and seed vigor can be improved.
作者 杨永青 汪晓峰 YANG Yong-Qing WANG Xiao-Feng② ( Department of Biology, Beijing Forestry University, Beijing 100083 )
出处 《植物学通报》 CAS CSCD 北大核心 2004年第6期 641-648,共8页 Chinese Bulletin of Botany
基金 国家自然科学基金(30170100) 北京林业大学研究生培养基金资助
关键词 种子活力 膜系统 可溶性糖 膜脂 多胺 保护 种类 修复 正常 自由基清除 Seed vigor, Biomembrane,Structure, Function, Protective substances
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