A comparative genomic analysis of plant hormone related genes in different species
A comparative genomic analysis of plant hormone related genes in different species
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不同物种植物激素相关基因的比较基因组分析。
DOI：
10.1016/s1673-8527(09)60040-0
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发表时间：
2010-04-01
影响因子：
5.9
通讯作者：
Guo, Hongwei
中科院分区：
文献类型：
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作者：
Jiang, Zhiqiang;Guo, Hongwei
植物激素是在植物的整个生命周期中起重要作用的小分子，被称为生长素、赤霉素、细胞分裂素、脱落酸、乙烯、茉莉酸、水杨酸和油菜素类固醇。模式生物拟南芥的遗传和分子研究揭示了各种植物激素反应的个体途径。在这项研究中，我们选择了479个基因，这些基因根据遗传证据与各种激素作用有令人信服的联系。通过使用这479个基因作为查询，在几个物种（微生物、植物和动物）中进行全基因组搜索以寻找它们的直系同源物。同时，通过比较分析，对它们的演化关系进行了评价。我们的分析表明，植物激素的代谢和功能在高等植物物种中通常更加复杂和多样化。特别是，我们发现几种植物激素受体和关键信号成分不存在于低等植物或动物中。同时，随着基因组复杂性的增加，直系同源基因往往有更多的拷贝，并可能获得更多样化的功能。本文介绍了植物激素相关基因的分类和遗传分析，从代谢酶到受体和信号传导元件，在不同的物种中。
Plant hormones are small molecules that play important roles throughout the life span of a plant, known as auxin, gibberellin, cytokinin, abscisic acid, ethylene, jasmonic acid, salicylic acid, and brassinosteroid. Genetic and molecular studies in the model organism Arabidopsis thaliana have revealed the individual pathways of various plant hormone responses. In this study, we selected 479 genes that were convincingly associated with various hormone actions based on genetic evidence. By using these 479 genes as queries, a genome-wide search for their orthologues in several species (microorganisms, plants and animals) was performed. Meanwhile, a comparative analysis was conducted to evaluate their evolutionary relationship. Our analysis revealed that the metabolisms and functions of plant hormones are generally more sophisticated and diversified in higher plant species. In particular, we found that several phytohormone receptors and key signaling components were not present in lower plants or animals. Meanwhile, as the genome complexity increases, the orthologue genes tend to have more copies and probably gain more diverse functions. Our study attempts to introduce the classification and phylogenic analysis of phytohormone related genes, from metabolism enzymes to receptors and signaling components, in different species.