Arabidopsis NPL1: A Phototropin Homolog Controlling the Chloroplast High-Light Avoidance Response
Abstract
Chloroplasts relocate their positions in a cell in response to the intensity of incident light, moving to the side wall of the cell to avoid strong light, but gathering at the front face under weak light to maximize light interception. Here, Arabidopsis thaliana mutants defective in the avoidance response were isolated, and the mutated gene was identified as NPL1 (NPH-like 1), a homolog of NPH1 (nonphototropic hypocotyl 1), a blue light receptor used in phototropism. Hence, NPL1 is likely a blue light receptor regulating the avoidance response under strong light.
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Phototropins, as blue light receptors, can mediate chloroplast movement.
“Phototropins, as blue light receptors, can also mediate chloroplast movement (Kagawa et al., 2001; Kagawa and Wada, 2002).”
From The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants (2022) · cites this paper as Kagawa et al., 2001
RPT2 may play a key role in cross-regulation of phototropism and chloroplast movement.
“Therefore, RPT2 may play a key role in cross-regulation of phototropism and chloroplast movement.”
From The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants (2022) · cites this paper as Kagawa et al., 2001
In Arabidopsis, the chloroplast accumulation response is regulated by PHOT1 and PHOT2, whereas the avoidance response is regulated mainly by PHOT2.
“In Arabidopsis, the accumulation response is regulated by PHOT1 and PHOT2 (Sakai et al., 2001), whereas the avoidance response is regulated mainly by PHOT2 (Jarillo et al., 2001; Kagawa et al., 2001).”
From The action of enhancing weak light capture via phototropic growth and chloroplast movement in plants (2022) · cites this paper as Kagawa et al., 2001
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Self-citation
- Authors
- Kagawa, T., Sakai, T., Suetsugu, N., Oikawa, K., Ishiguro, S., Kato, T., Tabata, S., Okada, K., & Wada, M.
- Affiliations
- National Institute for Basic Biology (JP)
- RIKEN (JP)
- Tokyo Metropolitan University (JP)
- Kazusa DNA Research Institute (JP)
- Kyoto University (JP)
- Corresponding author
- Kagawa, Takatoshi
- Sakai, Tatsuya
- Wada, Masamitsu
- Venue
- Science
- Published
- 2001-03-16
- Volume
- 291
- Issue
- 5511
- Pages
- 2138-2141
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2111663819
- Cited by
- 651
- References
- 16
- Citations by year
- 2026: 11 · 2025: 16 · 2024: 18 · 2023: 17 · 2022: 17 · 2021: 23 · 2020: 28 · 2019: 23 · 2018: 19 · 2017: 22 · 2016: 28 · 2015: 25 · 2014: 29 · 2013: 29 · 2012: 35
- FWCI
- 50.19
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Science (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Light effects on plants
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Photosynthetic Processes and Mechanisms
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Molecular Biology Research
- Keywords
- blue light receptor, chloroplast positioning, phototropism, Arabidopsis thaliana mutants, light signaling
- MeSH terms
- Alleles, Cell Membrane, Chloroplasts, Light, Movement, Mutation, Phosphoproteins, Plant Proteins, RNA, Messenger, Genes, Plant, Protein Serine-Threonine Kinases, Arabidopsis, Protein Structure, Tertiary, Plant Structures, Plant Leaves, Phototropism, RNA, Plant, Arabidopsis Proteins
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