Spatial distribution of phytochromes |
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Authors: | Akira Nagatani |
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Institution: | (1) Molecular Genetics Research Laboratory, The University of Tokyo, Hongo, 113 Tokyo, Japan |
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Abstract: | Phytochromes are chromoproteins which mediate several light responses in plants. Phytochrome proteins are encoded by a gene
family which is currently being characterized in several plant species. Analysis of type-specific mutants of two well-characterized
members of the family, PhyA and PhyB, indicates that these proteins have distinct functions. Much remains to be learned about
the mechanisms by which the phytochromes carry out their distinct and diverse functions. It is hoped that information concerning
the localization of phytochromes, at the whole plant and subcellular levels, will aid in elucidating the mechanism of phytochrome
function. This review, which summarizes information about phytochrome distribution, has an emphasis on recent reports in which
the molecular species of phytochrome are differentiated. However, classical data are also included and reinterpreted using
knowledge of the phytochrome family. |
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Keywords: | Immunocytochemistry Intracellular distribution Light regulation Microbeam irradiation Phytochrome Signal transduction |
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