Back to Search
Start Over
Synergistic and Antagonistic Action of Phytochrome (Phy) A and PhyB during Seedling De-Etiolation in Arabidopsis thaliana.
- Source :
-
International journal of molecular sciences [Int J Mol Sci] 2015 May 28; Vol. 16 (6), pp. 12199-212. Date of Electronic Publication: 2015 May 28. - Publication Year :
- 2015
-
Abstract
- It has been reported that Arabidopsis phytochrome (phy) A and phyB are crucial photoreceptors that display synergistic and antagonistic action during seedling de-etiolation in multiple light signaling pathways. However, the functional relationship between phyA and phyB is not fully understood under different kinds of light and in response to different intensities of such light. In this work, we compared hypocotyl elongation of the phyA-211 phyB-9 double mutant with the wild type, the phyA-211 and phyB-9 single mutants under different intensities of far-red (FR), red (R), blue (B) and white (W) light. We confirmed that phyA and phyB synergistically promote seedling de-etiolation in B-, B plus R-, W- and high R-light conditions. The correlation of endogenous ELONGATED HYPOCOTYL 5 (HY5) protein levels with the trend of hypocotyl elongation of all lines indicate that both phyA and phyB promote seedling photomorphogenesis in a synergistic manner in high-irradiance white light. Gene expression analyses of RBCS members and HY5 suggest that phyB and phyA act antagonistically on seedling development under FR light.
- Subjects :
- Arabidopsis genetics
Arabidopsis growth & development
Arabidopsis metabolism
Arabidopsis Proteins genetics
Arabidopsis Proteins radiation effects
Basic-Leucine Zipper Transcription Factors genetics
Basic-Leucine Zipper Transcription Factors metabolism
Darkness
Dose-Response Relationship, Radiation
Gene Expression Regulation, Plant radiation effects
Hypocotyl genetics
Hypocotyl growth & development
Hypocotyl metabolism
Light
Mutation
Nuclear Proteins genetics
Nuclear Proteins metabolism
Phytochrome A genetics
Phytochrome A radiation effects
Phytochrome B genetics
Phytochrome B radiation effects
Arabidopsis radiation effects
Arabidopsis Proteins metabolism
Hypocotyl radiation effects
Phytochrome A metabolism
Phytochrome B metabolism
Subjects
Details
- Language :
- English
- ISSN :
- 1422-0067
- Volume :
- 16
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- International journal of molecular sciences
- Publication Type :
- Academic Journal
- Accession number :
- 26030677
- Full Text :
- https://doi.org/10.3390/ijms160612199