（1 Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, China; 2 High-Tech Research Center, Shandong Academy of Agricultural Sciences, Jinan 250100, China; 3 Laboratory of Crop Genetic Improvement and Biotechnology, Huanghuaihai, Ministry of Agriculture, Jinan 250100, China; *Corresponding author, E-mail: email@example.com）
Phytochrome family mainly senses red and far-red light to regulate a range of developmental processes throughout the life cycle of plants. Rice phytochrome gene family is composed of three members known as PHYA, PHYB and PHYC. It has been elucidated that individual phytochromes display both unique and overlapping roles in rice photomorphogenesis by characterization of all rice phytochrome mutants including single mutants, all combinations of double mutants as well as triple mutant. Based on the published data and authors′ ongoing studies, current knowledge of rice phytochrome functions in regulating seedling deetiolation, root gravitropic response and elongation, plant architecture, flowering time and fertility is summarized. Additionally, the important issues in the field of rice phytochromes are proposed.
GU Jian-wei ,LIU Jing ,XUE Yan-jiu et al. Phytochrome Functions in Rice Development[J]. , 2011, 25(2): 130-135 .
Bae G, Choi G. Decoding of light signals by plant phytochromes and their interacting proteins. Annu Rev Plant Biol, 2008, 59: 281-311.
Suetsugu N, Wada M. Chloroplast photorelocation movement mediated by phototropin family proteins in green plants. Biol Chem, 2007, 388: 927-935.
Takano M, Inagaki N, Xie X, et al. Distinct and cooperative functions of phytochromes A, B, and C in the control of deetiolation and flowering in rice. Plant Cell, 2005, 17: 3311-3325.
Quail P H. An emerging map of the phytochromes. Plant Cell Environ, 1997, 20: 657-665.
Matsushita T, Mochizuki N, Nagatani A. Dimers of the N-terminal domain of phytochrome B are functional in the nucleus. Nature, 2003, 424: 571-574.
Nagatani A. Light-regulated nuclear localization of phytochromes. Curr Opin Plant Biol, 2004, 7: 1-4.
Quail P H. Phytochrome photosensory signalling networks. Nat Rev Mol Cell Biol, 2002, 3: 85-93.
Takano M, Inagaki N, Xie X, et al. Phytochromes are the sole photoreceptors for perceiving red/far-red light in rice. Proc Natl Acad Sci USA, 2009, 106: 14705-14710.
Rockwell N C, Su Y S, Lagarias J C. Phytochrome structure and signaling mechanisms. Annu Rev Plant Biol, 2006， 57: 837-858.
Khanna R, Shen Y, Mario C M, et al. The basic helix-loop-helix transcription factor PIF5 acts on ethylene biosynthesis and phytochrome signaling by distinct mechanisms. Plant Cell, 2007, 19: 3915-3929.
Sharrock R A, Quail P H. Novel phytochrome sequences in Arabidopsis thaliana: Structure, evolution and differential expression of a plant regulatory photoreceptor family. Genes Dev, 1989, 3: 1745-1757.
Clack T, Mathews S, Sharrock R A. The phytochrome apoprotein family in Arabidopsis is encoded by five genes: The sequences and expression of PHYD and PHYE. Plant Mol Biol, 1994, 25: 413-427.
Kay S A, Keith B, Shinozaki K, et al. The sequence of the rice phytochrome gene. Nucl Acids Res， 1989, 17: 2865-2866.
Dehesh K, Tepperman J, Christensen A H, et al. phyB is evolutionarily conserved and constitutively expressed in rice seedling shoots. Mol Gen Genet， 1991, 225: 305-313.
Tahir M, Kanegae H, Takano M. Phytochrome C (PHYC) gene in rice: Isolation and characterization of a complete coding sequence. Plant Physiol， 1998, 118: 1535.
Basu D, Dehesh K, Schneider-Poetsch H J, et al. Rice PHYC gene: Structure, expression, map position and evolution. Plant Mol Biol， 2000, 44: 27-42.
Takano M, Kanegae H, Shinomura T, et al. Isolation and characterization of rice phytochrome A mutants. Plant Cell, 2001, 13: 521-534.
Xie X, Shinomura T, Inagaki N, et al. Phytochrome-mediated inhibition of coleoptile growth in rice: Age-dependency and action spectra. Photochem Photobiol, 2007, 83: 131-138. Shimizu H, Tanabata T, Xie X, et al. Phytochrome-mediated growth inhibition of seminal roots in rice seedlings. Physiol Plant, 2009, 139: 289-297.
Vriezen W H, Zhou Z Y, van Der S D. Regulation of submergence-induced enhanced shoot elongation in Oryza sativa L. Ann Bot (Lond), 2003, 91: 263-270.
Mekhedov S I, Kende H. Submergence enhances expression of a gene encoding 1-aminocyclopropane-1-carboxylate oxidase in deepwater rice. Plant Cell Physiol, 1996, 37: 531-537.
Ishikawa R, Tamaki S, Yokoi S, et al. Suppression of the floral activator Hd3a is the principal cause of the night break effect in rice. Plant Cell, 2005, 17: 3326-3336.
Ishikawa R, Shinomura T, Takano M, et al. Phytochrome dependent quantitative control of Hd3a transcription is the basis of the night break effect in rice flowering. Genes Genet Syst, 2009, 84: 179-184.
Xie D X, Feys B F, James S, et al. COI1: An Arabidopsis gene required for jasmonate-regulated defense and fertility. Science, 1998, 280: 1091-1094 .
Ishiguro S, Kawai-Oda A, Ueda J, et al. The DEFECTIVE IN ANTHER DEHISCENCE1 gene encodes a novel phospholipase A1 catalyzing the initial step of jasmonic acid biosynthesis, which synchronizes pollen maturation, anther dehiscence,and flower opening in Arabidopsis. Plant Cell, 2001, 13: 2191-2209.
Riemann M, Muller A, Korte A, et al. Impaired induction of the jasmonate pathway in the rice mutant hebiba. Plant Physiol, 2003, 133: 1820-1830.
Haga K, Iino M. Phytochrome-mediated transcriptional up-regulation of ALLENE OXIDE SYNTHASE in rice seedlings. Plant Cell Physiol, 2004, 45(2): 119-128.
Kang C Y, Lian H L, Wang F F, et al. Cryptochromes, phytochromes, and COP1 regulate light-controlled stomatal development in Arabidopsis. Plant Cell, 2009, 21: 2624-2641.
Wang F F, Lian H L, Kang C Y, et al. Phytochrome B is involved in mediating red light-induced stomatal opening in Arabidopsis thaliana. Mol Plant, 2010， 3: 246-259.