| 种子发育与萌发过程中的程序性细胞死亡 |
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| 引用本文： | 田向荣,欧阳学智,宋松泉.种子发育与萌发过程中的程序性细胞死亡[J].云南植物研究,2003,25(5):579-588. |
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| 作者姓名： | 田向荣 欧阳学智 宋松泉 |
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| 作者单位： | 1. 中国科学院西双版纳热带植物园,云南,勐腊,666303;中山大学生,命科学学院,广东,广州,510275
2. 中山大学生,命科学学院,广东,广州,510275 |
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| 基金项目： | 中国科学院"百人计划"和知识创新工程重要方向性项目(KSCX2-SW-117) |
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| 摘 要： | 禾谷类种子胚乳发育过程中的程序性细胞死亡(PCD)主要发生在种子成熟期的后期,并伴随着生物合成的停止和自然脱水;乙烯和活性氧促进胚乳发育中的PCD,而ABA起负调节作用。种子萌发过程中糊粉层降解的PCD被GA、Ca^2 和活性氧促进,被ABA和抗氧化剂抑制。种子人工老化和劣变种子萌发过程中可能存在PCD事件,其研究对延长种子的贮藏寿命和提高播种品质具有重要的意义。
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| 关 键 词： | 种子 发育 萌发 程序性细胞死亡 |
| 文章编号： | 0253-2700(2003)05-0579-10 |
| 修稿时间： | 2003年1月16日 |
Programmed Cell Death during Seed Development and Germination |
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| TIAN Xiang Rong ,OUYANG Xue Zhi ,SONG Song Quan.Programmed Cell Death during Seed Development and Germination[J].Acta Botanica Yunnanica,2003,25(5):579-588. |
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| Authors: | TIAN Xiang Rong OUYANG Xue Zhi SONG Song Quan |
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| Institution: | TIAN Xiang Rong 1,2,OUYANG Xue Zhi 2,SONG Song Quan 1,2** |
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| Abstract: | Programmed cell death (PCD) during endosperm development of cereal seeds mainly occurs at late maturation of seeds,and consequently there are the cessation of biosynthesis and natural drying.PCD during endosperm development is enhanced by ethylene and reactive oxygen species(ROS),and inhibited by ABA.PCD of aleurone layer degradation during seed germination is enhanced by GA,Ca 2+ and ROS,and inhibited by ABA and antioxidants.There may be PCD events during accelerated ageing of seeds and germination of deteriorated seeds.It is very important to study these events for increasing storage life of seeds and improving the quality of sowing seed. |
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| Keywords: | Seed Development Germination Deterioration Programmed cell death |
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