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BES1转录因子家族对调节植物的生长发育和逆境胁迫具有非常重要的作用。本研究在甘蓝型油菜基因组测序完成的基础上,对芸薹属作物BES1转录因子家族的进化及表达进行了系统深入研究。本研究在甘蓝型油菜、白菜、甘蓝和拟南芥全基因组中分别鉴定到29条、15条、14条和8条BES1转录因子。通过系统发育、基因结构和保守基序的分析,这些转录因子被分为三组,即Group A、Group B和Group C。在甘蓝型油菜与白菜、甘蓝和拟南芥间分别鉴定出30对、32对和23对直系同源基因。甘蓝型油菜中含有15对旁系同源BES1基因,显著的高于其它3个物种。大多数BES1基因在根和叶中都具有较高的表达水平,表明这些基因在甘蓝型油菜生长发育过程中起到重要的作用。本研究对进一步探索该家族调控植物的生长及逆境适应的分子机制奠定了基础,同时为其它基因家族的研究提供了指导。
The BES1 transcription factor family plays a very important role in regulating plant growth and stress. In this study, based on the genome sequencing of Brassica napus, the evolution and expression of the BES1 transcription factor family in Brassica crops were systematically studied. In this study, 29, 15, 14 and 8 BES1 transcription factors were identified in the genomes of Brassica napus, Chinese cabbage, Brassica napus and Arabidopsis respectively. Through analysis of phylogeny, gene structure and conserved motifs, these transcription factors are grouped into three groups, Group A, Group B and Group C. 30 pairs, 32 pairs and 23 pairs of orthologous genes were identified between Brassica napus and cabbage, cabbage and Arabidopsis. Brassica napus contains 15 pairs of paralogs BES1 gene, significantly higher than the other three species. Most BES1 genes have higher expression levels in roots and leaves, indicating that these genes play an important role in the growth and development of Brassica napus. This study lays the foundation for further exploring the molecular mechanism of the family regulation of plant growth and adversity, and provides guidance for the study of other gene families.