By a News Reporter-Staff News Editor at Life Science Weekly -- Investigators discuss new findings in Life Science Research. According to news originating from Guangdong, People's Republic of China, by NewsRx correspondents, research stated, "Plant height is an important agronomic trait for crop architecture and yield. Most known factors determining plant height function in gibberellin or brassinosteroid biosynthesis or signal transduction."
Our news journalists obtained a quote from the research from the University of Agriculture, "Here, we report a japonica rice (Oryza sativa ssp. japonica) dominant dwarf mutant, Photoperiod-sensitive dwarf 1 (Psd1). The Psd1 mutant showed impaired cell division and elongation, and a severe dwarf phenotype under long-day conditions, but nearly normal growth in short-day. The plant height of Psd1 mutant could not be rescued by gibberellin or brassinosteroid treatment. Genetic analysis with R-1 and F-2 populations determined that Psd1 phenotype was controlled by a single dominant locus. Linkage analysis with 101 tall F-2 plants grown in a long-day season, which were derived from a cross between Psd1 and an indica cultivar, located Psd1 locus on chromosome 1. Further fine-mapping with 1017 tall F-2 plants determined this locus on an 11.5-kb region. Sequencing analysis of this region detected a mutation site in a gene encoding a putative lipid transfer protein; the mutation produces a truncated C-terminus of the protein."
According to the news editors, the research concluded: "This study establishes the genetic foundation for understanding the molecular mechanisms regulating plant cell division and elongation mediated by interaction between genetic and environmental factors."
For more information on this research see: Characterization and genetic mapping of a Photoperiod-sensitive dwarf 1 locus in rice (Oryza sativa L.). Theoretical and Applied Genetics, 2014;127(1):241-250. Theoretical and Applied Genetics can be contacted at: Springer, 233 Spring St, New York, NY 10013, USA (see also Life Science Research).
The news correspondents report that additional information may be obtained from R.Q. Li, South China Agr Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Key Lab Plant Funct Genom & Biotechnol, Guangdong Prov Higher Educ InstColl Life Sci, Guangzhou 510642, Guangdong, People's Republic of China. Additional authors for this research include J.X. Xia, Y.W. Xu, X.C. Zhao, Y.G. Liu and Y.L. Chen.
Keywords for this news article include: Asia, Guangdong, Life Science Research, People's Republic of China
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