Phytochrome regulation of pea phototropin
Open accessAbstract
Type 1 phototropin, one of the blue light receptors responsible for phototropism, is encoded in peas by at least two genes, PsPHOT1A and PsPHOT1B (formerly PsPK4 and PsPK5), both of which are more similar to Arabidopsis PHOT1 than to Arabidopsis PHOT2. We show here that PsPHOT1B encodes a full-length phototropin, whose expression pattern suggests that Psphot1b is the predominant phot1-type phototropin in etiolated seedlings. The gene encoding the other type 1 phototropin, PsPHOT1A, is expressed at low levels, with its highest levels in the leaves and stems of more mature, light-grown plants. Studies with phyA, phyB and the phyAphyB double mutants show that phyA and phyB have partially redundant roles in the reduction of PsPHOT1B expression under red light.
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Phototropins mediate stomatal opening, leaf extension, and leaf positioning in Arabidopsis.
“Phototropins are commonly observed in higher and lower plants, in addition to mediate phototropism and chloroplast movement, phototropins mediate stomatal opening, leaf extension, and leaf positioning in Arabidopsis”
From The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants (2022) · cites this paper as Elliott et al., 2004
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References 40 · Cited by 15
- Authors
- Elliott, R. C., Platten, J. D., Watson, J. C., & Reid, J. B.
- Affiliations
- University of Tasmania (AU)
- Indiana University – Purdue University Indianapolis (US)
- Corresponding author
- Elliott, Robert C.
- Venue
- Journal of Plant Physiology
- Publisher
- Elsevier BV
- Published
- 2004
- Volume
- 161
- Issue
- 3
- Pages
- 265-270
- ISSN
- 0176-1617 (ISSN-L)
- OpenAlex
- W2053883220
- Cited by
- 15
- References
- 40
- Citations by year
- 2026: 1 · 2025: 1 · 2022: 1 · 2020: 1 · 2017: 1 · 2014: 1 · 2013: 1 · 2012: 1
- FWCI
- 2.75
- Type
- journal article
- Language
- en
- Open access
- green
- figshare.com
- Locations
- Journal of Plant Physiology (publishedVersion)
- PubMed (publishedVersion)
- UTAS Research Repository (acceptedVersion)
- eCite Digital Repository (University of Tasmania) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Parasitism and Resistance
- Keywords
- phototropin, pea, Pisum sativum, phytochrome, phototropism, blue light receptor, gene expression, etiolated seedlings, red light, phyA, phytochrome B
- MeSH terms
- Base Sequence, Eye Proteins, Flavoproteins, Light, Models, Biological, Mutation, Photoreceptor Cells, Phylogeny, Phytochrome, Transcription Factors, Gene Expression, Genes, Plant, Photoreceptor Cells, Invertebrate, Phototropism, Pisum sativum, DNA, Plant, Arabidopsis Proteins, Drosophila Proteins, Receptors, G-Protein-Coupled, Phytochrome B, Phytochrome A, Cryptochromes
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