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A Dominant Mutation in the Pea PHYA Gene Confers Enhanced Responses to Light and Impairs the Light-Dependent Degradation of Phytochrome A
Citation
Weller, JL and Batge, SL and Smith, JJ and Kerckhoffs, LH and Sineshchekov, VA and Murfet, IC and Reid, JB, A Dominant Mutation in the Pea PHYA Gene Confers Enhanced Responses to Light and Impairs the Light-Dependent Degradation of Phytochrome A, Plant Physiology, 135, (4) pp. 2186-2195. ISSN 0032-0889 (2004) [Refereed Article]
DOI: doi:10.1104/pp.103.036103
Abstract
Phytochrome A (phyA) is an important photoreceptor controlling many processes throughout the plant life cycle. It is unique within the phytochrome family for its ability to mediate photomorphogenic responses to continuous far-red light and for the strong photocontrol of its transcript level and protein stability. Here we describe a dominant mutant of garden pea (Pisum sativum) that displays dramatically enhanced responses to light, early photoperiod-independent flowering, and impaired photodestruction of phyA. The mutant carries a single base substitution in the PHYA gene that is genetically inseparable from the mutant phenotype. This substitution is predicted to direct the replacement of a conserved Ala in an N-terminal region of PHYA that is highly divergent between phyA and other phytochromes. This result identifies a region of the phyA photoreceptor molecule that may play an important role in its fate after photoconversion.
Item Details
Item Type: | Refereed Article |
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Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Plant physiology |
Objective Division: | Plant Production and Plant Primary Products |
Objective Group: | Grains and seeds |
Objective Field: | Grain legumes |
UTAS Author: | Weller, JL (Associate Professor Jim Weller) |
UTAS Author: | Batge, SL (Ms Shona Lee Batge) |
UTAS Author: | Smith, JJ (Ms Jenny Smith) |
UTAS Author: | Kerckhoffs, LH (Dr Leonardus Kerckhoffs) |
UTAS Author: | Murfet, IC (Professor Ian Murfet) |
UTAS Author: | Reid, JB (Professor Jim Reid) |
ID Code: | 29849 |
Year Published: | 2004 |
Web of Science® Times Cited: | 30 |
Deposited By: | Plant Science |
Deposited On: | 2004-08-01 |
Last Modified: | 2007-11-02 |
Downloads: | 0 |
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