Chromosomal loci important for cotyledon opening under UV-B in Arabidopsis thaliana

• Autores: Conte, Mariana; de Simone, Silvia; Simmons, Susan J.; Ballaré, Carlos Luis; Stapleton, Ann E.
• Año de publicación: 2010
• Idioma: inglés
• Tipo de recurso: artículo
• Fuente: BMC Plant Biology; Vol.10; 10:112; http://www.biomedcentral.com/
• Materia: ARABIDOPSIS; ARABIDOPSIS THALIANA
• Institución: Universidad de Buenos Aires. Facultad de Agronomía

Fil: Conte, Mariana. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Fil: Conte, Mariana. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Fil: de Simone, Silvia. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Fil: de Simone, Silvia. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Fil: Simmons, Susan J. University of North Carolina at Wilmington. Department of Mathematics and Statistics. Wilmington, NC 28403 USA.
Fil: Ballaré, Carlos Luis. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Fil: Ballaré, Carlos Luis. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
Fil: Stapleton, Ann E. University of North Carolina at Wilmington. Department of Biology and Marine Biology. Wilmington, NC 28403 USA.
Background: Understanding of the genetic architecture of plant UV-B responses allows extensive targeted testing of candidate genes or regions, along with combinations of those genes, for placement in metabolic or signal transduction pathways. Results: Composite interval mapping and single-marker analysis methods were used to identify significant loci for cotyledon opening under UV-B in four sets of recombinant inbred lines. In addition, loci important for canalization (stability) of cotyledon opening were detected in two mapping populations. One candidate locus contained the gene HY5. Mutant analysis demonstrated that HY5 was required for UV-B-specific cotyledon opening. Conclusions: Structured mapping populations provide key information on the degree of complexity in the genetic control of UV-B-induced cotyledon opening in Arabidopsis. The loci identified using quantitative trait analysis methods are useful for follow-up testing of candidate genes.