Analysis of heterosis caused by transposition burst of a transposon mPing in rice

水稻转座子mPing转座爆发造成的杂种优势分析

• 批准号: 23657006
• 负责人: TSUKIYAMA Takuji
• 金额: $ 2.5万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2012
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-23657006/
• 关键词: 転移因子; ヘテロシス; ゲノム; 遺伝学; 育種学

We investigated molecular mechanisms of vigorous phenotype in vigorous growing revertants of a slender glume mutant IM294 in which a transposon mPing is actively transposing. We found that transposition burst of mPing is necessary forthe expression of vigorous phenotype. Moreover, we identified 20 mPing insertions within or near gens in vigorous mutant VGI1. These results documented that transposition burst of transposon greatly contributes in evolution of organisms.

我们研究了瘦长颖片突变体IM294的旺盛生长复生体的旺盛表型的分子机制，其中转座子mPing活跃转座。我们发现，mPing的转位突变对于强健表型的表达是必要的。此外，我们在旺盛突变体VGI1的基因内或基因附近发现了20个mPing插入。这些结果证明了转座子的转座爆发在生物体的进化中起着重要的作用。