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THE ROLE(S) OF CALCIUM IONS IN PHYTOCHROME ACTION
Author(s) -
Tretyn Andrzej,
Kendrick Richard E.,
Wagner Gottfried
Publication year - 1991
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1991.tb02136.x
Subject(s) - citation , copernicus , library science , chemistry , humanities , philosophy , classics , physics , art , computer science , astronomy
Phytochrome, the red (R)*and far-red light (FR)absorbing morphogenetic photoreceptor, which occurs throughout the Plant Kingdom, was discovered by scientists at the US Department of Agriculture, Beltsville, MD. This year is the 40th anniversary of the prediction of the R/FR reversible pigment in plants and more than 30 years since its first spectroscopic detection. During the last four decades extensive progress has been made in understanding the molecular structure and function of phytochrome (for review see Furuya, 1987). Phytochrome genes have now been cloned for a few plant species (Quail et al . , 1987; Furuya, 1989; Sharrock and Quail, 1989). The photoregulation of genes, including the phytochrome gene itself, has been extensively studied (Quail et a / . , 1987; Nagy et a / . , 1988; Furuya, 1989; Tomizawa et a[., 1990). However, the molecular mechanism of phytochrome action is still obscure. Multiple response types could be an indication of different modes of action of the photoreceptor (Jordan et al., 1986; Kronenberg and Kendrick. 1986; Schafer et al., 1986; Furuya, 1989). One attractive hypothesis is that calcium ions (Ca2+) participate as a second messenger (Roux, 1984). During the last decade many papers have been published about the involvement of Ca” in the regulation of different phytochrome-regulated processes. Some o’f them were reviewed by Roux et 121. in 1986. Since that time