Journal of Plant Research

, Volume 130, Issue 4, pp 779–789

Temperature-dependent signal transmission in chloroplast accumulation response

  • Takeshi Higa
  • Satoshi Hasegawa
  • Yoshio Hayasaki
  • Yutaka Kodama
  • Masamitsu Wada
Regular Paper
  • 221 Downloads

Abstract

Chloroplast photorelocation movement, well-characterized light-induced response found in various plant species from alga to higher plants, is an important phenomenon for plants to increase photosynthesis efficiency and avoid photodamage. The signal for chloroplast accumulation movement connecting the blue light receptor, phototropin, and chloroplasts remains to be identified, although the photoreceptors and the mechanism of movement via chloroplast actin filaments have now been revealed in land plants. The characteristics of the signal have been found; the speed of signal transfer is about 1 µm min−1 and that the signal for the accumulation response has a longer life and is transferred a longer distance than that of the avoidance response. Here, to collect the clues of the unknown signal substances, we studied the effect of temperature on the speed of signal transmission using the fern Adiantum capillus-veneris and found the possibility that the mechanism of signal transfer was not dependent on the simple diffusion of a substance; thus, some chemical reaction must also be involved. We also found new insights of signaling substances, such that microtubules are not involved in the signal transmission, and that the signal could even be transmitted through the narrow space between chloroplasts and the plasma membrane.

Keywords

Blue light Chloroplast movement Fern Phototropin Red light Signaling 

Supplementary material

10265_2017_938_MOESM1_ESM.pdf (1.5 mb)
Supplementary material 1 (PDF 1535 KB)

Copyright information

© The Botanical Society of Japan and Springer Japan 2017

Authors and Affiliations

  • Takeshi Higa
    • 1
  • Satoshi Hasegawa
    • 2
  • Yoshio Hayasaki
    • 2
  • Yutaka Kodama
    • 3
  • Masamitsu Wada
    • 1
  1. 1.Department of Biological SciencesTokyo Metropolitan UniversityTokyoJapan
  2. 2.Center for Optical Research and EducationUtsunomiya UniversityTochigiJapan
  3. 3.Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan

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