当前位置: 首页 > 文章 > 棉花GhTCP2基因启动子分离及其在幼嫩组织的表达分析 棉花学报 2013,25 (3) 197-204
Position: Home > Articles > 棉花GhTCP2基因启动子分离及其在幼嫩组织的表达分析 Cotton Science 2013,25 (3) 197-204

棉花GhTCP2基因启动子分离及其在幼嫩组织的表达分析

作  者:
邢进;刘伟娜;赵琳琳;赵金凤;张文会;赵宝华;李学勇
单  位:
河北师范大学生命科学学院;中国农业科学院作物科学研究所;聊城大学生命科学学院
关键词:
棉花;TCP家族转录因子;启动子;特异性表达
摘  要:
采用Genome walking的方法分离了GhTCP2基因的启动子区,应用在线分析软件PLACE对该启动子序列进行分析,发现含有多个与细胞周期、细胞分裂素、生长素相关的顺式作用元件.构建了GhTCP2基因启动子驱动报告基因GUS的植物表达载体并转化了模式植物拟南芥.转基因拟南芥的组织化学染色显示,GUS基因主要在根尖、幼叶、顶芽、侧芽和花蕾中表达.这说明棉花GhTCP2基因启动子可以驱动目的基因在植物的幼嫩组织表达,该启动子有望在植物抗虫基因工程中应用.
单  位:
National Key Facility for Crop Gene Resource and Genetic Improvement,Institute of Crop Science,Chinese Academy of Agricultural Sciences,Beijing 100081,China%School of Life Science,Hebei Normal University,Shijiazhuang,Hebei 050024,China%School of Life Science,Liaocheng University,Liaocheng,Shandong 252059,China
关键词:
cotton%TCP family transcription factor%promoter%specific expression
摘  要:
Expression of the cotton GhTCP2 gene,a member of the TCP family,was detected by RT-PCR in young tissues,such as apical,lateral,and floral buds,of cotton plants.To study GhTCP2 gene expression patterns in detail,the GhTCP2 promoter region was isolated using the genome walking technique.Many cis-regulatory motifs related to the cell cycle,cytokinin,and auxin were identified using the on-line software program PLACE.The GhTCP2 promoter was inserted upstream of the GUS reporter gene,and the resulting plant expression construct was transformed into Arabidopsis.Histological staining of transgenic Arabidopsis plants revealed that the GhTCP2 promoter-driven GUS gene was expressed in root tips,young leaves,and apical,lateral,and floral buds.This result indicates that the cotton GhTCP2 promoter is able to drive foreign gene expression in young plant tissues.The GhTCP2 promoter has the potential to be utilized in plant insect-resistance genetic engineering to protect young plant tissue from insect attack.

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