GENETIC-EVIDENCE THAT THE RED-ABSORBING FORM OF PHYTOCHROME-B MODULATES GRAVITROPISM IN ARABIDOPSIS-THALIANA

被引：78

作者：

LISCUM, E ^{[1
]}

HANGARTER, RP ^{[1
]}

机构：

[1] OHIO STATE UNIV,DEPT PLANT BIOL,COLUMBUS,OH 43210

来源：

PLANT PHYSIOLOGY | 1993年 / 103卷 / 01期

关键词：

D O I：

10.1104/pp.103.1.15

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Hypocotyls of dark-grown Arabidopsis seedlings exhibit strong negative gravitropism, whereas in red light, gravitropism is strongly reduced. Red/far-red light-pulse experiments and analysis of specific phytochrome-deficient mutants indicate that the red-absorbing (Pr) form of phytochrome B regulates normal hypocotyl gravitropism in darkness, and depletion of Pr by photoconversion to the far-red-absorbing form attenuates hypocotyl gravitropism. These studies provide genetic evidence that the Pr form of phytochrome has an active function in plant development.

引用

页码：15 / 19

页数：5

共 33 条

[1] GRAVITROPISM IN A STARCHLESS MUTANT OF ARABIDOPSIS - IMPLICATIONS FOR THE STARCH-STATOLITH THEORY OF GRAVITY SENSING [J].