Different regulatory regions are required for the vernalization-induced repression of FLOWERING LOCUS C and for the epigenetic maintenance of repression

被引：200

作者：

Sheldon, CC ^{[1
]}

Conn, AB ^{[1
]}

Dennis, ES ^{[1
]}

Peacock, WJ ^{[1
]}

机构：

[1] CSIRO, Plant Ind, Canberra, ACT 2601, Australia

来源：

PLANT CELL | 2002年 / 14卷 / 10期

关键词：

D O I：

10.1105/tpc.004564

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Vernalization, the promotion of flowering by a prolonged period of low temperature, results in repression of the floral repressor FLOWERING LOCUS C (FLC) and in early flowering. This repression bears the hallmark of an epigenetic event: the low expression state is maintained over many cell division cycles, but expression is derepressed in progeny. We show that the two stages of the response of FLC to vernalization, the repression of FLC and the maintenance of the repression during growth at normal temperatures after vernalization, are mediated through different regions of the FLC gene. Both promoter and intragenic regions are required for the responses. We also identify a 75-bp region in the FLC promoter that, in addition to intragenic sequences, is required for expression in nonvernalized plants.

引用

页码：2527 / 2537

页数：11

共 30 条

[1] THE DROSOPHILA-ZESTE PROTEIN BINDS COOPERATIVELY TO SITES IN MANY GENE REGULATORY REGIONS - IMPLICATIONS FOR TRANSVECTION AND GENE-REGULATION [J].