1.山西农业大学农学院,太谷 030801;2.中国农业科学院作物科学研究所/作物基因资源与育种全国重点实验室,北京 100081
研究方向为杂粮分子育种,E-mail: 13460284571@163.com
武 晶,研究方向为食用豆种质资源鉴定评价,E-mail: wujing@caas.cn
侯思宇, 研究方向为杂粮分子育种,E-mail: siyuhou@sxau.edu.cn
国家食用豆产业技术体系(CARS-08);山西省重大科技专项揭榜挂帅项目(202101140601027)
1.College of Agronomy, Shanxi Agricultural University, Taigu 030801;2.Institute of Crop Sciences, Chinese Academy of Agricultural Sciences/National Key Laboratory of Crop Gene Resources and Breeding, Beijing 100081
China Agriculture Research System-Food Legumes (CARS-08); The Grand Science and Technology Special Projects in Shanxi Province (202101140601027)
出愈率是影响遗传转化效率的关键因素,WOX基因能促进细胞增值和芽分化。本研究对普通菜豆WOX基因家族进行了全基因组鉴定,鉴定到18个普通菜豆WOX基因,编码177~847个氨基酸,其蛋白序列均包含保守的HD结构域,亚细胞定位于细胞核中,启动子顺式作用元件主要为分生组织形成相关及生长素反应相关。并与绿豆、大豆和拟南芥WOX基因家族成员进行了共线性和系统进化树分析,124个WOX基因可分为三大类群,4个物种间的WOX同源基因受纯化选择作用。通过筛选不同浓度6-BA和2,4-D激素配比的培养基,成功建立了两个普通菜豆品种的愈伤组织诱导体系。通过转录组结合qRT-PCR分析,鉴定到8个WOX差异表达基因,其中PvWOX1、PvWOX15和PvWOX16基因与出愈率显著相关。qRT-PCR验证了这3个基因表达模式与转录组结果一致。以上结果表明PvWOX1、PvWOX15和PvWOX16基因可作为潜在的靶基因用于提高普通菜豆遗传转化效率。
Callus induction is crucial for successful genetic transformation, while WOX genes might enhance this process by stimulating cell division and shoot organogenesis. This study systematically analyzed the WOX gene family in common bean (Phaseolus vulgaris L.), resulting in identification of 18 WOX genes that encode proteins with 177 to 847 amino acids. These proteins are predicted containing homeodomain conserved domains and to be localized in the cell nucleus. The promoters were identified containing cis-acting elements related to meristem formation and auxin response. A collinearity and phylogenetic tree analysis was conducted with the members of the WOX gene family in mung bean, soybean and Arabidopsis thaliana. The 124 WOX genes can be divided into three major groups, and the WOX homologous genes among the four species are subject to purifying selection. Through screening the media with different concentrations of 6-BA and 2,4-D hormone ratios, the callus induction systems of two common bean varieties were successfully established. Through transcriptome combined with qRT-PCR analysis, eight differentially expressed WOX genes were identified. The PvWOX1, PvWOX15 and PvWOX16 genes were significantly correlated with the callus induction rate, and their transcriptional trends were further confirmed using qRT-PCR. These results indicate that the PvWOX1, PvWOX15 and PvWOX16 genes can be used as potential target genes for improving the genetic transformation efficiency in common bean.
叶宗茂,谢迅,侯思宇,等.普通菜豆
