Journal Article

Phototropins and Neochrome1 Mediate Nuclear Movement in the Fern <i>Adiantum capillus-veneris</i>

Hidenori Tsuboi, Noriyuki Suetsugu, Hiroko Kawai-Toyooka and Masamitsu Wada

in Plant and Cell Physiology

Published on behalf of Japanese Society of Plant Physiologists

Volume 48, issue 6, pages 892-896
Published in print June 2007 | ISSN: 0032-0781
Published online June 2007 | e-ISSN: 1471-9053 | DOI: http://dx.doi.org/10.1093/pcp/pcm057
Phototropins and Neochrome1 Mediate Nuclear Movement in the Fern Adiantum capillus-veneris

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In gametophytic cells (prothalli) of the fern Adiantum capillus-veneris, nuclei as well as chloroplasts change their position according to light conditions. Nuclei reside on anticlinal walls in darkness and move to periclinal or anticlinal walls under weak or strong light conditions, respectively. Here we reveal that red light-induced nuclear movement is mediated by neochrome1 (neo1), blue light-induced movement is redundantly mediated by neo1, phototropin2 (phot2) and possibly phot1, and dark positioning of both nuclei and chloroplasts is mediated by phot2. Thus, both the nuclear and chloroplast photorelocation movements share common photoreceptor systems.

Keywords: Adiantum capillus-veneris; Chloroplast movement; Fern; Neochrome; Nuclear movement; Phototropin

Journal Article.  2456 words.  Illustrated.

Subjects: Biochemistry ; Molecular and Cell Biology ; Plant Sciences and Forestry

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