GRAS家族是一类植物特有的转录调控因子, 已有报道表明该家族基因在植物生长发育和光信号转导过程中具有重要作用。目前在拟南芥(Arabidopsis thaliana)基因组中已鉴定了33个GRAS家族基因。利用功能基因组学和生物信息学手段,通过基因芯片数据挖掘和基因功能预测, 对拟南芥GRAS家族基因在渗透和干旱胁迫过程中的应答模式进行了初步探索, 提出了一类响应渗透胁迫和干旱胁迫的拟南芥GRAS家族基因。以SCL13为例, 利用基因芯片相关性和GO分析, 对其在渗透胁迫信号转导过程中可能的调控机制进行了预测和分析。这一研究将为阐明GRAS家族基因参与水分胁迫的分子机制提供新的思路, 同时也为植物抗逆分子育种提供候选基因。

The GRAS family is a class of plant specific transcription factors, playing essential roles in plant development and light signal transduction pathways. 33 GRAS family genes were identified in Arabidopsis genome. In this study, we found a group of GRAS family genes in response to osmotic and/or drought stresses through Arabidopsis GeneChip data mining. Meanwhile, we conducted co-expression analysis and gene ontology (GO) analysis and predicted that SCL13 was possibly involved in the response to osmotic stress. Our study will be helpful to elucidate some GRAS family genes related in signal transduction pathways during water stress, and be beneficial to crop molecular breeding in the future.