Cited by 71Light effects on plantsPhotosynthetic Processes and MechanismsPlant Molecular Biology Research

Rapid Severing and Motility of Chloroplast-Actin Filaments Are Required for the Chloroplast Avoidance Response in Arabidopsis

Open access
Kong, Sam-Geun, Arai, Yoshiyuki, Suetsugu, Noriyuki, Yanagida, Toshio, Wada, Masamitsu·2013·The Plant Cell

Abstract

Phototropins (phot1 and phot2 in Arabidopsis thaliana) relay blue light intensity information to the chloroplasts, which move toward weak light (the accumulation response) and away from strong light (the avoidance response). Chloroplast-actin (cp-actin) filaments are vital for mediating these chloroplast photorelocation movements. In this report, we examine in detail the cp-actin filament dynamics by which the chloroplast avoidance response is regulated. Although stochastic dynamics of cortical actin fragments are observed on the chloroplasts, the basic mechanisms underlying the disappearance (including severing and turnover) of the cp-actin filaments are regulated differently from those of cortical actin filaments. phot2 plays a pivotal role in the strong blue light–induced severing and random motility of cp-actin filaments, processes that are therefore essential for asymmetric cp-actin formation for the avoidance response. In addition, phot2 functions in the bundling of cp-actin filaments that is induced by dark incubation. By contrast, the function of phot1 is dispensable for these responses. Our findings suggest that phot2 is the primary photoreceptor involved in the rapid reorganization of cp-actin filaments that allows chloroplasts to change direction rapidly and control the velocity of the avoidance movement according to the light's intensity and position.

Integrity signals

Registry

Crossref · 10.1105/tpc.113.109694

Cites

68 of 68 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kong, S.-G., Arai, Y., Suetsugu, N., Yanagida, T., & Wada, M.
Affiliations
  • Kyushu University (JP)
  • The University of Osaka (JP)
Venue
The Plant Cell
Published
2013-02-01
Volume
25
Issue
2
Pages
572-590
ISSN
  • 1040-4651 (ISSN-L)
  • 1532-298X
OpenAlex
W2109697816
Cited by
71
References
68
Citations by year
2026: 3 · 2025: 4 · 2024: 3 · 2023: 5 · 2022: 2 · 2021: 4 · 2020: 10 · 2019: 3 · 2018: 7 · 2017: 6 · 2016: 7 · 2015: 8 · 2014: 4 · 2013: 5
FWCI
9.64
Type
journal article
Language
en
Open access
Locations
  • The Plant Cell (publishedVersion, cc-by)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Arizona Biomedical Research Commission
  • Japan Society for the Promotion of Science (23120523, 23770168, 20227001)
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
phototropin, phot2, phot1, blue light photoreception, actin filament severing, actin filament motility, actin bundling, Arabidopsis thaliana, dark incubation
MeSH terms
Chloroplasts, Darkness, Diacetyl, Light, Actin Cytoskeleton, Microscopy, Fluorescence, Phosphoproteins, Protein Serine-Threonine Kinases, Arabidopsis, Microscopy, Confocal, Arabidopsis Proteins, Plants, Genetically Modified

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review