| 植物LEAFY同源基因的研究进展 |
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| 引用本文： | 马月萍,陈凡,戴思兰.植物LEAFY同源基因的研究进展[J].植物学通报,2005,22(5):605-613. |
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| 作者姓名： | 马月萍 陈凡 戴思兰 |
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| 作者单位： | 1. 北京林业大学园林学院,北京,100083
2. 中国科学院遗传与发育生物学研究所,北京,100101 |
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| 摘 要： | 本文就近10年来LEAFY(简写为LFY)同源基因的研究进展做了综合分析.通过对19种植物中已分离到的LFY同源基因的序列比较分析发现:LFY同源基因编码区核苷酸和氨基酸序列同源性都较高;在双子叶植物基因组中,拷贝数却有所不同.该基因的表达特性显示其在不同植物中表达的时间和空间有所差异.根据已知序列推导的氨基酸序列构建的系统进化树表明,单子叶植物与裸子植物的亲缘关系近于双子叶与裸子植物的亲缘关系.上述研究资料为植物成花机理研究提供了重要参考,且在研究植物系统进化方面也具有重要的意义.
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| 关 键 词： | 高等植物 花发育 LFY同源基因 |
| 收稿时间： | 2004-11-18 |
| 修稿时间： | 2005-03-24 |
Studies of LEAFY Homologue Genes in Higher Plants |
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| MA Yue-Ping,CHENFan,DAI Si-Lan.Studies of LEAFY Homologue Genes in Higher Plants[J].Chinese Bulletin of Botany,2005,22(5):605-613. |
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| Authors: | MA Yue-Ping CHENFan DAI Si-Lan |
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| Institution: | 1.College of Landscape Architecture, Beijing Forestry University, Beijing 100083; 2.Institute of Genetics and Development Biology, the Chinese Academy of Sciences, Beijing 100101 |
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| Abstract: | We review and summarize the progress of studies of LEAFY genes. Sequence comparative analysis of the orthologs of genes isolated from a wide variety of plant species showed high similarity in coding sequence at the nucleotide and amino acid levels but different copy numbers, especially in diploid angiosperms. Orthologous genes, however, have variant expression patterns in different plants. Phylogenetic analysis of the predicted protein sequences of the orthologs supported the currently accepted theory of phylogenetic partnerships of plant species. The information summarized here is helpful not only for better understanding the mechanisms of plant flowering but also for further promoting studies of the evolution of flowering plants. |
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| Keywords: | Flowering plants Flower development LEAFY homologue gene |
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