title: Ectopic expression reveals a conserved PHYB homolog in soybean.
abstract: Phytochromes sense red/far-red light and trigger a cascade of physiological responses in plant. Here, a phytochrome B homolog, GmPHYB1, was amplified from the soybean genome, and its expression profiles were obtained for various parts of the plant and at various developmental stages. The gene was ectopically expressed in Arabidopsis thaliana, driven by CaMV 35S promoter, to study the physiological functions of the gene product. The overexpressors of GmPHYB1 behaved similarly to those of AtPHYB, but with some subtle differences with respect to the acceleration of flowering under short day conditions and the growth of the hypocotyl under certain light fluence rate. The results suggested that this soybean PHYB homolog was well conserved both at the level of sequence and physiological function.
authors: Institute of Crop Sciences, National Key Facility of Crop Gene Resource and Genetic Improvement, Chinese Academy of Agricultural Sciences, Haidian District, Beijing, China.
authors: Fa-Qiang
authors: FQ
authors: Wu
authors: Xiao-Mei
authors: XM
authors: Zhang
authors: Dong-Mei
authors: DM
authors: Li
authors: Yong-Fu
authors: YF
authors: Fu
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D017124:Conserved Sequence; D015536:Down-Regulation; D060146:Ecotype; D019143:Evolution, Molecular; D035264:Flowers / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D015870:Gene Expression; D018506:Gene Expression Regulation, Plant; D018745:Genome, Plant / Q000235:genetics; D018546:Hypocotyl / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D008027:Light; D051942:Phytochrome A / Q000235:genetics; D051939:Phytochrome B / Q000235:genetics*; D018517:Plant Roots / Q000235:genetics / Q000254:growth & development / Q000528:radiation effects; D012689:Sequence Homology, Nucleic Acid; D013025:Glycine max / Q000235:genetics*; D013997:Time Factors
chemical_list: D051942:Phytochrome A; D051939:Phytochrome B