Chloroplast movement: dissection of events downstream of photo- and mechano-perception |
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Authors: | Yoshikatsu?Sato Akeo?Kadota Email author" target="_blank">Masamitsu?WadaEmail author |
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Institution: | (1) Department of Biological Sciences, Graduate School of Science, Tokyo Metropolitan University, 1–1 Minami-Osawa, Hachioji, Tokyo 192–0397, Japan,;(2) Division of Biological Regulation and Photobiology, National Institute for Basic Biology, Myodaiji, Okazaki, Japan,;(3) Division of Speciation Mechanisms 2, National Institute for Basic Biology, Myodaiji, Okazaki, Japan, |
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Abstract: | The study of chloroplast photorelocation movement is progressing rapidly now that mutants for chloroplast movement have become
available in Arabidopsis thaliana. However, mechanistic approaches in cell biology still stand to elucidate the mechanisms and regulations of such movement.
The fern Adiantum capillus-veneris and the moss Physcomitrella patens are particularly suitable materials for analyzing the kinetics of intracellular chloroplast movement. In these plants, chloroplast
movement is induced by red light as well as blue light, mediated by phytochrome and blue light receptor, respectively. In
this paper, we review the unique force-generating system for chloroplast motility in P. patens. In addition to light-induced chloroplast movement, we also summarize mechanically induced chloroplast movement in these
plants and the motility systems involved. Finally, the different dependency of mechano- and photo-relocation movement on external
Ca2+ is discussed.
Electronic Publication |
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Keywords: | Actin filaments Blue light receptor Calcium ion Microtubules Phototropin Phytochrome |
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