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Earliness Per Se by Temperature Interaction on Wheat Development.
Ochagavía, Helga; Prieto, Paula; Zikhali, Meluleki; Griffiths, Simon; Slafer, Gustavo A.
Afiliação
  • Ochagavía H; Department of Crop and Forest Sciences and AGROTECNIO (Center for Research in Agrotechnology), University of Lleida, Av. Rovira Roure 191, 25198, Lleida, Spain.
  • Prieto P; Department of Crop and Forest Sciences and AGROTECNIO (Center for Research in Agrotechnology), University of Lleida, Av. Rovira Roure 191, 25198, Lleida, Spain.
  • Zikhali M; John Innes Centre, Norwich Research Park, Colney Ln, Norwich, NR4 7UH, United Kingdom.
  • Griffiths S; Seed Co Limited, Rattray Arnold Research Station, PO Box CH142, Harare, Zimbabwe.
  • Slafer GA; John Innes Centre, Norwich Research Park, Colney Ln, Norwich, NR4 7UH, United Kingdom.
Sci Rep ; 9(1): 2584, 2019 02 22.
Article em En | MEDLINE | ID: mdl-30796296
Differences in time to heading that remain after photoperiod and vernalisation requirements have been saturated are classified as earliness per se (Eps) effects. It has been commonly assumed that Eps genes are purely constitutive and independent of environment, although the likely effect of temperature on Eps effects in hexaploid wheat has never been tested. We grew four near isogenic lines (NILs) for the Eps gene located in chromosome 1D (Eps-D1) at 6, 9, 12, 15, 18, 21 and 24 °C. In line with expectations we found that lines carrying the Eps-late allele were always later than those with Eps-early alleles. But in addition, we reported for the first time that the magnitude of the effect increased with decreasing temperature: an Eps x temperature interaction in hexaploid wheat. Variation in heading time due to Eps x temperature was associated with an increase in sensitivity to temperature mainly during late reproductive phase. Moreover, we showed that Eps alleles exhibited differences in cardinal (base, optimum, maximum) temperatures and that the expression of ELF3, (the likely candidate for Eps-D1) also interacted with temperature.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Proteínas de Plantas / Temperatura / Triticum / Regulação da Expressão Gênica de Plantas / Cromossomos de Plantas / Flores Idioma: En Revista: Sci Rep Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Proteínas de Plantas / Temperatura / Triticum / Regulação da Expressão Gênica de Plantas / Cromossomos de Plantas / Flores Idioma: En Revista: Sci Rep Ano de publicação: 2019 Tipo de documento: Article