Genome-wide analysis of WOX gene family in rice, sorghum, maize, Arabidopsis and poplar.
Genome-wide analysis of WOX gene family in rice, sorghum, maize, Arabidopsis and poplar.
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DOI：
10.1111/j.1744-7909.2010.00982.x
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发表时间：
2010-11
影响因子：
11.4
通讯作者：
Xin Zhang;Jie Zong;Jianhua Liu;Jinyuan Yin;Dabing Zhang
中科院分区：
文献类型：
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作者：
Xin Zhang;Jie Zong;Jianhua Liu;Jinyuan Yin;Dabing Zhang
WUSCHEL相关同源框基因（WOX）是一个在植物中特异表达的基因家族。已知它们通过决定细胞命运在调节植物组织和器官的发育中起重要作用。最近获得的全基因组序列使我们能够对植物中的WOX基因进行更全面的系统发育分析。在本研究中，我们确定了11和21个WOX高粱（高粱）和玉米（玉米），分别。根据同源结构域的氨基酸序列，将来自水稻、高粱、玉米、拟南芥和白杨的72个WOX基因分为3个支持性较好的进化枝和9个亚组。它们的系统发育关系也得到了同源结构域以外的基序的观察的支持。观察到9个亚群中WOX基因的重复事件在单子叶植物和双子叶植物之间的差异，其中单子叶植物A亚群中WOX基因的重复事件较多，双子叶植物A亚群中WOX基因的重复事件较少。此外，我们还观察了水稻、高粱和拟南芥中WOX基因的保守内含子/外显子结构模式。此外，WUS（Wuschel）-box和ERF（ERF相关的两亲性阻遏）-like基序被观察到在这五种植物的几个WOX亚组中是保守的。对水稻和拟南芥中WOX基因表达模式的比较分析表明，WOX基因在植物中具有保守性和多样性。这项工作为WOX基因家族的进化提供了见解，并对未来的研究有用。
WUSCHEL-related homeobox (WOX) genes form a large gene family specifically expressed in plants. They are known to play important roles in regulating the development of plant tissues and organs by determining cell fate. Recent available whole genome sequences allow us to do more comprehensive phylogenetic analysis of the WOX genes in plants. In the present study, we identified 11 and 21 WOXs from sorghum (Sorghum bicolor) and maize (Zea mays), respectively. The 72 WOX genes from rice (Oryza sativa), sorghum, maize, Arabidopsis (Arabidopsis thaliana) and poplar (Populus trichocarpa) were grouped into three well supported clades with nine subgroups according to the amino acid sequences of their homodomains. Their phylogenetic relationship was also supported by the observation of the motifs outside the homodomain. We observed the variation of duplication events among the nine sub-groups between monocots and eudicots, for instance, more gene duplication events of WOXs within subgroup A for monocots, while, less for dicots in this subgroup. Furthermore, we observed the conserved intron/exon structural patterns of WOX genes in rice, sorghum and Arabidopsis. In addition, WUS (Wuschel)-box and EAR (the ERF-associated amphiphilic repression)-like motif were observed to be conserved among several WOX subgroups in these five plants. Comparative analysis of expression patterns of WOX genes in rice and Arabidopsis suggest that the WOX genes play conserved and various roles in plants. This work provides insights into the evolution of the WOX gene family and is useful for future research.