萝卜全基因组中LBD基因家族成员的鉴定与分析

Genome-wide Characterization of the LBD Gene Family in Radish

LBD基因家族是植物所特有的一类转录因子,在植物生长发育过程中起到非常重要的作用。本研究利用生物信息学方法,从萝卜基因组中鉴定出分布于9条染色体上的59个LBD基因。该家族成员结构比较简单,内含子数均不超过3个。萝卜LBD基因可分为两大类,分别包含50个和9个成员。它们在染色体上的分布不均匀,1号染色体上基因数目最多,有18个,而7号和8号染色体分别仅有1个LBD基因。对它们在不同组织和发育时期的表达模式研究发现,该基因家族具有一定的时空表达特异性,预测其参与萝卜不同的发育过程。本研究为萝卜LBD基因家族的功能分析奠定了基础。

LBD gene family is a plant-specific transcription factors and plays very important role in plant development.In this study,59 LBD genes were identified using bioinformatic approach and they were found on 9 chromosomes of radish genome.The radish LBD genes have simple genomic organization with the intron numbers being less than 3.These LBD genes could be classified into 2 classes according to the phylogeny relationship,including 50 and 9 members,respectively.The number of radish LBDs on chromosomes was different.For instance,eighteen members were found on chromosome 1,while only one member was found on chromosome 7 and 8.The expression patterns of radish LBD genes in different tissues and development stages showed spatial and temporal differences,implying the functional specificity.Thus,these results will become helpful for the functional characterization of the LBD genes family.