| 禾谷类作物胚乳的淀粉合成 |
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| 引用本文： | 杨晖,赵心爱,周云泉.禾谷类作物胚乳的淀粉合成[J].生命科学,2004,16(3):177-181. |
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| 作者姓名： | 杨晖 赵心爱 周云泉 |
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| 作者单位： | 1. 丽水学院生物系,丽水,323000
2. 浙江大学农业与生物技术学院,杭州,310029 |
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| 摘 要： | 禾谷类作物胚乳拥有独特的淀粉合成途径，需要多种特异性同工酶的参与，这些酶在禾谷类其他组织或非禾谷类作物中是不存在的。近来明确了单个淀粉同工酶的功能，这有助于我们更深入地了解禾谷类淀粉直链、支链的合成与分布。在对禾谷类淀粉合成进行遗传分析的基础上，提出了脱分支酶作用模型。以水稻全基因组序列草图为背景，本文首次全面分析了禾谷类作物的淀粉合成。
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| 关 键 词： | 禾谷类 ADP-葡萄糖焦磷酸化酶 淀粉合成酶 淀粉分枝酶 淀粉去分枝酶 蛋白修饰 |
| 文章编号： | 1004-0374(2004)03-0177-05 |
| 修稿时间： | 2003年10月29 |
Starch synthesis in the cereal endosperm |
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| YANG Hui,ZHAO Xin-Ai,ZHOU Yun-Quan.Starch synthesis in the cereal endosperm[J].Chinese Bulletin of Life Sciences,2004,16(3):177-181. |
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| Authors: | YANG Hui ZHAO Xin-Ai ZHOU Yun-Quan |
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| Institution: | YANG Hui1,ZHAO Xin-Ai2*,ZHOU Yun-Quan2 |
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| Abstract: | The pathway of starch synthesis in the cereal endosperm is unique, and requires enzyme isoformsthat are not present in other cereal tissues or non-cereal plants. Recent information on the functions of indi-vidual enzyme isoforms has provided insight into how the linear chains and branch linkages in cereal starch aresynthesized and distributed. Genetic analysis has led to the formulation of models for the roles of de-branchingenzymes in cereal starch production, and reveal pleiotropic effects that suggest that certain enzymes may bephysically associated. For the first time, tools for global analysis of starch biosynthesis are available for cerealcrops, and are heralded by the draft sequence of the rice genome. |
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| Keywords: | cereal ADP-glucose pyrophosphorylase(AGP) starch synthase(SS) starch branching enzyme(BE) starch debranching enzyme(DBE) protein modification |
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