Phototropism: at the crossroads of light-signaling pathways.
- Goyal A Centre for Integrative Genomics, University of Lausanne, Genopode Building, CH 1015 Lausanne, Switzerland.
- Szarzynska B
- Fankhauser C
- 2013-04-09
Published in:
- Trends in plant science. - 2013
Arabidopsis
Gene Expression Regulation, Plant
Indoleacetic Acids
Light Signal Transduction
Phototropism
Plant Proteins
English
Phototropism enables plants to orient growth towards the direction of light and thereby maximizes photosynthesis in low-light environments. In angiosperms, blue-light photoreceptors called phototropins are primarily involved in sensing the direction of light. Phytochromes and cryptochromes (sensing red/far-red and blue light, respectively) also modulate asymmetric hypocotyl growth, leading to phototropism. Interactions between different light-signaling pathways regulating phototropism occur in cryptogams and angiosperms. In this review, we focus on the molecular mechanisms underlying the co-action between photosensory systems in the regulation of hypocotyl phototropism in Arabidopsis thaliana. Recent studies have shown that phytochromes and cryptochromes enhance phototropism by controlling the expression of important regulators of phototropin signaling. In addition, phytochromes may also regulate growth towards light via direct interaction with the phototropins.
- Language
-
- English
- Open access status
- green
- Identifiers
-
- DOI 10.1016/j.tplants.2013.03.002
- PMID 23562459
- Persistent URL
- https://sonar.ch/global/documents/246313
Statistics
Document views: 36
File downloads:
- Full-text: 0