Journal article
BAS1: A gene regulating brassinosteroid levels and light responsiveness in Arabidopsis
Proceedings of the National Academy of Sciences - PNAS, Vol.96(26), pp.15316-15323
Inaugural Article
12/21/1999
Handle:
https://hdl.handle.net/2376/111896
PMCID: PMC24817
PMID: 10611382
Abstract
The
Arabidopsis
bas1-D
mutation suppresses the long hypocotyl phenotype caused by mutations in the photoreceptor phytochrome B (phyB). The adult phenotype of
bas1-D phyB-4
double mutants mimics that of brassinosteroid biosynthetic and response mutants.
bas1-D phyB-4
has reduced levels of brassinosteroids and accumulates 26-hydroxybrassinolide in feeding experiments. The basis for the mutant phenotype is the enhanced expression of a cytochrome P450 (CYP72B1).
bas1-D
suppresses a
phyB
-null allele, but not a
phyA
-null mutation, and partially suppresses a cryptochrome-null mutation. Seedlings with reduced
BAS1
expression are hyperresponsive to brassinosteroids in a light-dependent manner and display reduced sensitivity to light under a variety of conditions. Thus,
BAS1
represents one of the control points between multiple photoreceptor systems and brassinosteroid signal transduction.
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Details
- Title
- BAS1: A gene regulating brassinosteroid levels and light responsiveness in Arabidopsis
- Creators
- Michael M Neff - Plant Biology Laboratory andSerena M Nguyen - Plant Biology Laboratory andElizabeth J Malancharuvil - Plant Biology Laboratory andShozo Fujioka - Plant Biology Laboratory andTakahiro Noguchi - Plant Biology Laboratory andHideharu Seto - Plant Biology Laboratory andMasayoshi Tsubuki - Plant Biology Laboratory andToshio Honda - Plant Biology Laboratory andSuguru Takatsuto - Plant Biology Laboratory andShigeo Yoshida - Plant Biology Laboratory andJoanne Chory - Plant Biology Laboratory and
- Publication Details
- Proceedings of the National Academy of Sciences - PNAS, Vol.96(26), pp.15316-15323
- Academic Unit
- Crop and Soil Sciences, Department of
- Series
- Inaugural Article
- Publisher
- The National Academy of Sciences
- Identifiers
- 99900547330001842
- Language
- English
- Resource Type
- Journal article