Molecular characterization of the Abp1 5′-flanking region in maize and the teosintes

被引：15

作者：

Elrouby, N ^{[1
]}

Bureau, TE ^{[1
]}

机构：

[1] McGill Univ, Dept Biol, Montreal, PQ H3A 1B1, Canada

来源：

PLANT PHYSIOLOGY | 2000年 / 124卷 / 01期

关键词：

D O I：

10.1104/pp.124.1.369

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Auxin-binding protein 1 subsp. mays (ABP1) has been suggested as a receptor mediating auxin-induced cell expansion and differentiation. In maize (Zea mays), ABP1 is encoded by a single gene, Abp1. The TATA and CAAT promoter elements as well as the transcriptional start site were previously identified and all were found to be located within a transposable element (TE), Tourist-Zm11. In this study we report the cloning and characterization of the Abp1 5'-flanking region in maize and its wild relatives, the teosintes. We provide evidence for insertion polymorphism corresponding to Tourist-Zm11 and two novel TEs, Batuta and Pilgrim. Despite this polymorphic structure, the Abp1 core promoter in maize and the teosintes is conserved, is located downstream of the TE insertions in the 5'-flanking region, and is TATA-less. We discuss the potential evolutionary impact of these TEs on the regulation of Abp1 gene expression.

引用

页码：369 / 377

页数：9

共 54 条

[21] AUXIN-BINDING PROTEIN LOCATED IN THE ENDOPLASMIC-RETICULUM OF MAIZE SHOOTS - MOLECULAR-CLONING AND COMPLETE PRIMARY STRUCTURE [J].