Suppressors of an Arabidopsis thaliana phyB Mutation Identify Genes That Control Light Signaling and Hypocotyl Elongation
Author(s) -
Jason W. Reed,
Rangasamy P. Elumalai,
Joanne Chory
Publication year - 1998
Publication title -
genetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.792
H-Index - 246
eISSN - 1943-2631
pISSN - 0016-6731
DOI - 10.1093/genetics/148.3.1295
Subject(s) - hypocotyl , biology , arabidopsis thaliana , arabidopsis , phenotype , genetics , gene , mutant , mutation , suppressor , phytochrome , genetic screen , forward genetics , microbiology and biotechnology , botany , red light
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.
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