| 玉米副突变及其分子机制 |
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| 引用本文： | 杨同文,李潮海.玉米副突变及其分子机制[J].生命的化学,2012(2):189-195. |
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| 作者姓名： | 杨同文 李潮海 |
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| 作者单位： | 周口师范学院植物遗传与分子育种重点实验室;河南农业大学河南省作物生长和发育调控重点实验室 |
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| 基金项目： | 河南省科技厅自然科学基金项目(092300410074);河南省高校科技创新人才支持计划(2010HASTIT015);周口师范学院重点学科建设经费项目资助 |
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| 摘 要： | 副突变是一种表观遗传现象,通过同源基因间染色质状态信息的转移建立新的基因表达状态,这种表达状态能够通过减数分裂而传递到后代。玉米是研究副突变及其机制的模式植物,目前已经发现有5个基因位点能够发生副突变。对玉米b1副突变系统的广泛研究发现DNA重复序列、siRNA途径、DNA结合蛋白等在副突变状态的建立和维持过程中可能起着重要的作用。
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| 关 键 词： | 玉米 副突变 串联重复 siRNA途径 |
Paramutation and its molecular mechanisms in maize |
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| YANG Tongwen,LI Chaohai.Paramutation and its molecular mechanisms in maize[J].Chemistry of Life,2012(2):189-195. |
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| Authors: | YANG Tongwen LI Chaohai |
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| Institution: | 1Key Laboratory of Plant Genetics and Molecular Breeding,Zhoukou Normal University,Zhoukou 466000,China 2He’nan Key Laboratory for Regulation and Control of Crop Growth and Development,He’nan Agricultural University,Zhengzhou 450002,China |
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| Abstract: | Paramutation is an epigenetic phenomenon,which establishes a gene expression state through information transfer of chromatin state between homologous genes,and the new expression state can be transferred through meiosis to the following generation.Maize is a model plant for the study of paramutation and its mechanisms.Five loci paramutation have been discovered in maize so far.The studies on b1 paramutation system in maize have outlined a picture of the mechanism.It is possible that DNA tandem repeats,siRNA pathway and DNA-binding protein play important roles in the establishment and maintenance of the paramutation state in maize. |
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| Keywords: | maize paramutation tandem repeats siRNA pathway |
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