Effects of ambient temperature in association with photoperiod on phenology and on the expressions of major plant developmental genes in wheat (Triticum aestivum L.)

Tibor Kiss, Laura E. Dixon, Alexandra Soltész, Judit Bányai, Marianna Mayer, Krisztina Balla, Vincent Allard, Gábor Galiba, Gustavo A. Slafer, Simon Griffiths, Ottó Veisz, Ildikó Karsai

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In addition to its role in vernalization, temperature is an important environmental stimulus in determining plant growth and development. We used factorial combinations of two photoperiods (16H, 12H) and three temperature levels (11, 18 and 25 °C) to study the temperature responses of 19 wheat cultivars with established genetic relationships. Temperature produced more significant effects on plant development than photoperiod, with strong genotypic components. Wheat genotypes with PPD-D1 photoperiod sensitive allele were sensitive to temperature; their development was delayed by higher temperature, which intensified under non-inductive conditions. The effect of temperature on plant development was not proportional; it influenced the stem elongation to the largest extent, and warmer temperature lengthened the lag phase between the detection of first node and the beginning of intensive stem elongation. The gene expression patterns of VRN1, VRN2 and PPD1 were also significantly modified by temperature, while VRN3 was more chronologically regulated. The associations between VRN1 and VRN3 gene expression with early apex development were significant in all treatments but were only significant for later plant developmental phases under optimal conditions (16H and 18 °C). Under 16H, the magnitude of the transient peak expression of VRN2 observed at 18 and 25 °C associated with the later developmental phases.

Original languageEnglish
Pages (from-to)1629-1642
Number of pages14
JournalPlant Cell and Environment
Volume40
Issue number8
DOIs
Publication statusPublished - Aug 2017

Keywords

  • VRN1
  • VRN2
  • VRN3 and PPD1 gene expressions
  • apex and plant development

ASJC Scopus subject areas

  • Physiology
  • Plant Science

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