Catálogo CEIBA de la Biblioteca Central de FAUBA


Vista normal Vista MARC Vista ISBD

The receptor-like kinase ERECTA contributes to the shade-avoidance syndrome in a background-dependent manner

Por: Kasulin, L.
Colaborador(es): Agrofoglio, Y | Botto, J. F.
ISSN: 0305-7364.Tipo de material: Artículos y capítulos. Recurso electrónico.Tema(s): EOD RESPONSE | ERECTA | FAR-RED END-OF-DAY RESPONSE | NATURAL GENETIC VARIATION | PHYTOCHROME B [PHYB] | QTL | QUANTITATIVE TRAIT LOCI | SHADE-AVOIDANCE SYNDROME [SAS] | ARABIDOPSIS PROTEIN | CELL SURFACE RECEPTOR | ER PROTEIN, ARABIDOPSIS | PHYB PROTEIN, ARABIDOPSIS | PHYTOCHROME B | PROTEIN SERINE THREONINE KINASE | DICOTYLEDON | GENETIC VARIATION | GROWTH RATE | INHIBITION | LIGHT AVAILABILITY | LIGHT EFFECT | PRISTINE ENVIRONMENT | RECOMBINATION | SHADE TOLERANCE | STEM | ARABIDOPSIS | BASE PAIRING | ECOTYPE | ENZYMOLOGY | GENETIC ASSOCIATION | GENETIC VARIABILITY | GENETICS | GENOTYPE | GROWTH, DEVELOPMENT AND AGING | INBREEDING | LIGHT | METABOLISM | PHYSIOLOGY | PLANT CHROMOSOME | PLANT GROWTH | PLEIOTROPY | QUANTITATIVE TRAIT | QUANTITATIVE TRAIT LOCUS | RADIATION EXPOSURE | CHROMOSOMES, PLANT | GENETIC ASSOCIATION STUDIES | HYPOCOTYL | PROTEIN-SERINE-THREONINE KINASES | QUANTITATIVE TRAIT LOCI | QUANTITATIVE TRAIT, HERITABLE | RECEPTORS, CELL SURFACE | PHYB PROTEIN, ARABIDOPSIS | Recursos en línea: Haga clic para acceso en línea | LINK AL EDITOR. En: Annals of Botany Vol. 111, no. 5 (2013) 811-819Resumen: Background and AimsPlants growing at high densities perceive a decrease in the red to far-red [R/FR] ratio of incoming light. These changes in light quality trigger a suite of responses collectively known as the shade-avoidance syndrome [SAS] including hypocotyl and stem elongation, inhibition of branching and acceleration of flowering.MethodsQuantitative trait loci [QTLs] were mapped for hypocotyl length to end-of-day far-red [EOD], a simulated shade-avoidance response, in recombinant inbred line [RIL] populations of Arabidopsis thaliana seedlings, derived from Landsberg erecta [Ler] and three accessions [Columbia, Col; Nossen, No-0; and Cape Verde Islands, Cvi-0].Key ResultsFive loci were identified as being responsible for the EOD response, with a positive contribution of Ler alleles on the phenotype independently of the RIL population. Quantitative complementation analysis and transgenic lines showed that PHYB is the candidate gene for EODRATIO5 in the Ler Ã- Cvi-0 RIL population, but not for two co-localized QTLs, EODRATIO1 and EODRATIO2 mapped in the Ler Ã- No-0 and Ler Ã- Col RIL populations, respectively. The ERECTA gene was also implicated in the SAS in a background-dependent manner. For hypocotyl length EOD response, a positive contribution of erecta alleles was found in Col and Van-0, but not in Ler, Cvi-0, Hir-1 or Ws. Furthermore, pleiotropic effects of ERECTA in the EOD response were also detected for petiole and lamina elongation, hyponastic growth, and flowering time.ConclusionsThe results show that the analysis of multiple mapping populations leads to a better understanding of the SAS genetic architecture. Moreover, the background-and trait-dependent contribution of ERECTA in the SAS suggest that its function in shaded natural environments may be relevant for some populations in different phases of plant development. It is proposed that ERECTA is involved in canalization processes buffering the genetic variation of the SAS against environmental light fluctuations.
Etiquetas de esta biblioteca: No hay etiquetas de esta biblioteca para este título. Ingresar para agregar etiquetas.
    valoración media: 0.0 (0 votos)

Background and AimsPlants growing at high densities perceive a decrease in the red to far-red [R/FR] ratio of incoming light. These changes in light quality trigger a suite of responses collectively known as the shade-avoidance syndrome [SAS] including hypocotyl and stem elongation, inhibition of branching and acceleration of flowering.MethodsQuantitative trait loci [QTLs] were mapped for hypocotyl length to end-of-day far-red [EOD], a simulated shade-avoidance response, in recombinant inbred line [RIL] populations of Arabidopsis thaliana seedlings, derived from Landsberg erecta [Ler] and three accessions [Columbia, Col; Nossen, No-0; and Cape Verde Islands, Cvi-0].Key ResultsFive loci were identified as being responsible for the EOD response, with a positive contribution of Ler alleles on the phenotype independently of the RIL population. Quantitative complementation analysis and transgenic lines showed that PHYB is the candidate gene for EODRATIO5 in the Ler Ã- Cvi-0 RIL population, but not for two co-localized QTLs, EODRATIO1 and EODRATIO2 mapped in the Ler Ã- No-0 and Ler Ã- Col RIL populations, respectively. The ERECTA gene was also implicated in the SAS in a background-dependent manner. For hypocotyl length EOD response, a positive contribution of erecta alleles was found in Col and Van-0, but not in Ler, Cvi-0, Hir-1 or Ws. Furthermore, pleiotropic effects of ERECTA in the EOD response were also detected for petiole and lamina elongation, hyponastic growth, and flowering time.ConclusionsThe results show that the analysis of multiple mapping populations leads to a better understanding of the SAS genetic architecture. Moreover, the background-and trait-dependent contribution of ERECTA in the SAS suggest that its function in shaded natural environments may be relevant for some populations in different phases of plant development. It is proposed that ERECTA is involved in canalization processes buffering the genetic variation of the SAS against environmental light fluctuations.

No hay comentarios para este ítem.

Ingresar a su cuenta para colocar un comentario.

Av. San Martín 4453 - 1417 – CABA – Argentina.
Sala de lectura de Planta Baja: bibliote@agro.uba.ar (54 11) 5287-0013
Referencia: referen@agro.uba.ar (54 11) 5287-0418
Hemeroteca: hemerote@agro.uba.ar (54 11) 5287-0218