Cited by 78Light effects on plantsPlant Molecular Biology ResearchPlant Parasitism and Resistance

Phytochrome A Regulates the Intracellular Distribution of Phototropin 1–Green Fluorescent Protein in Arabidopsis thaliana

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Han, In-Seob, Tseng, Tong-Seung, Eisinger, William, Briggs, Winslow R.·2008·The Plant Cell

Abstract

It has been known for decades that red light pretreatment has complex effects on subsequent phototropic sensitivity of etiolated seedlings. Here, we demonstrate that brief pulses of red light given 2 h prior to phototropic induction by low fluence rates of blue light prevent the blue light–induced loss of green fluorescent protein–tagged phototropin 1 (PHOT1-GFP) from the plasma membrane of cortical cells of transgenic seedlings of Arabidopsis thaliana expressing PHOT1-GFP in a phot1-5 null mutant background. This red light effect is mediated by phytochrome A and requires ∼2 h in the dark at room temperature to go to completion. It is fully far red reversible and shows escape from photoreversibility following 30 min of subsequent darkness. Red light–induced inhibition of blue light–inducible changes in the subcellular distribution of PHOT1-GFP is only observed in rapidly elongating regions of the hypocotyl. It is absent in hook tissues and in mature cells below the elongation zone. We hypothesize that red light–induced retention of the PHOT1-GFP on the plasma membrane may account for the red light–induced increase in phototropic sensitivity to low fluence rates of blue light.

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  1. Curry, G.M. (1957). Studies on the Spectral Sensitivity of Phototropism. PhD dissertation (Cambridge, MA: Harvard University).
  2. Scha ¨fer, E., and Nagy, F., eds (2006). Photomorphogenesis in Plants and Bacteria, 3rd ed: Function and Signal Transduction Mechanisms. (Dordrecht, The Netherlands: Springer).

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Authors
Han, I.-S., Tseng, T.-S., Eisinger, W., & Briggs, W. R.
Affiliations
  • University of Ulsan (KR)
  • Carnegie Institution for Science (US)
  • Santa Clara University (US)
Venue
The Plant Cell
Published
2008-10-01
Volume
20
Issue
10
Pages
2835-2847
ISSN
  • 1040-4651 (ISSN-L)
  • 1532-298X
OpenAlex
W2099538976
Cited by
77
References
31
Citations by year
2026: 1 · 2024: 1 · 2023: 2 · 2022: 3 · 2020: 15 · 2019: 1 · 2018: 3 · 2017: 1 · 2016: 3 · 2015: 6 · 2014: 7 · 2013: 7 · 2012: 14
FWCI
5.24
Type
journal article
Language
en
Open access
Locations
  • The Plant Cell (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Science Foundation (0444504)
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
phytochrome A, phototropin 1, subcellular localization, plasma membrane retention, phototropism, photoreversibility, far-red light, hypocotyl elongation, Arabidopsis thaliana, etiolated seedlings
MeSH terms
Light, Phosphoproteins, Recombinant Fusion Proteins, Protein Serine-Threonine Kinases, Arabidopsis, Protein Transport, Arabidopsis Proteins, Plants, Genetically Modified, Green Fluorescent Proteins, Phytochrome A

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