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Transcription factors in rice: A genome-wide comparative analysis between monocots and eudicots

机译：水稻中的转录因子：单子叶植物和双子叶植物之间的全基因组比较分析

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摘要

It is not known how representative the Arabidopsis thaliana complement of transcription factors (TFs) is of other plants. The availability of rice (Oryza sativa) genome sequences makes possible a comparative analysis of TFs between monocots and eudicots, the two major monophyletic groups of angiosperms. Here, we identified 1611 TF genes that belong to 37 gene families in rice, comparable to the 1510 in Arabidopsis. Several gene subfamilies, but no families, were found to be lineage-specific. Phylogenetic analyses indicated that nearly half of the TF genes form clear orthologous pairs or groups, which were derived from 383 ancestral genes in the common ancestor of rice and Arabidopsis. Investigating gene duplication mechanisms revealed twelve pairs of large intragenomic duplicated blocks, which account for more than 40% of the rice genome. About 60% of the duplicated TF genes have been retained on duplicated segments. Functional conservation and diversification of TFs across monocot and eudicot lineages are discussed.
机译：未知拟南芥转录因子（TFs）的互补性在其他植物中的代表性。水稻（Oryza sativa）基因组序列的可获得性使对单子叶植物和双子叶植物（被子植物的两个主要单系群）之间的TFs进行比较分析成为可能。在这里，我们鉴定了水稻中属于37个基因家族的1611个TF基因，与拟南芥中的1510个基因家族相当。发现有几个基因亚家族，但没有家族，是特定于谱系的。系统发育分析表明，将近一半的TF基因形成清晰的直系同源对或组，它们来自水稻和拟南芥的共同祖先中的383个祖先基因。调查基因复制机制发现了十二对大的基因组内重复块，占水稻基因组的40％以上。大约60％的重复TF基因已保留在重复的片段上。讨论了跨单子叶植物和真双子叶植物谱系的TF的功能保守和多样化。

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