拟南芥光感受器对开花时间的调控。

Regulation of flowering time by Arabidopsis photoreceptors.

作者信息

Guo H, Yang H, Mockler T C, Lin C

机构信息

Department of Molecular, Cell and Developmental Biology, and Molecular Biology Institute, University of California, Los Angeles, CA 90095, USA.

出版信息

Science. 1998 Feb 27;279(5355):1360-3. doi: 10.1126/science.279.5355.1360.

DOI:10.1126/science.279.5355.1360

PMID:9478898

Abstract

The shift in plants from vegetative growth to floral development is regulated by red-far-red light receptors (phytochromes) and blue-ultraviolet A light receptors (cryptochromes). A mutation in the Arabidopsis thaliana CRY2 gene encoding a blue-light receptor apoprotein (CRY2) is allelic to the late-flowering mutant, fha. Flowering in cry2/fha mutant plants is only incompletely responsive to photoperiod. Cryptochrome 2 (cry2) is a positive regulator of the flowering-time gene CO, the expression of which is regulated by photoperiod. Analysis of flowering in cry2 and phyB mutants in response to different wavelengths of light indicated that flowering is regulated by the antagonistic actions of phyB and cry2.

摘要

植物从营养生长向生殖发育的转变受红光-远红光光受体（光敏色素）和蓝光-紫外光A光受体（隐花色素）调控。拟南芥中编码蓝光受体脱辅基蛋白（CRY2）的CRY2基因突变与晚花突变体fha等位。cry2/fha突变体植株的开花仅对光周期有不完全响应。隐花色素2（cry2）是开花时间基因CO的正向调节因子，其表达受光周期调控。对cry2和phyB突变体响应不同波长光的开花情况分析表明，开花受phyB和cry2的拮抗作用调控。