Reed J W, Elumalai R P, Chory J
Biology Department, University of North Carolina, Chapel Hill 27599-3280, USA.
Genetics. 1998 Mar;148(3):1295-310. doi: 10.1093/genetics/148.3.1295.
Ambient light controls the development and physiology of plants. The Arabidopsis thaliana photoreceptor phytochrome B (PHYB) regulates developmental light responses at both seedling and adult stages. To identify genes that mediate control of development by light, we screened for suppressors of the long hypocotyl phenotype caused by a phyB mutation. Genetic analyses show that the shy (short hypocotyl) mutations we have isolated fall in several loci. Phenotypes of the mutants suggest that some of the genes identified have functions in control of light responses. Other loci specifically affect cell elongation or expansion.
环境光控制着植物的发育和生理过程。拟南芥光受体phytochrome B（PHYB）在幼苗期和成年期均调控发育中的光反应。为了鉴定介导光对发育控制的基因，我们筛选了由phyB突变引起的长下胚轴表型的抑制子。遗传分析表明，我们分离出的shy（短下胚轴）突变位于几个基因座中。突变体的表型表明，鉴定出的一些基因在光反应控制中发挥作用。其他基因座则特异性地影响细胞伸长或扩展。
