Earliness Per Se by Temperature Interaction on Wheat Development

Scientific Reports
Helga OchagavíaGustavo A Slafer

Abstract

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.

References

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Citations

Jun 4, 2019·Environmental Science and Pollution Research International·Muhammad Umer Farooq, Jianqing Zhu
Jul 16, 2020·Journal of Experimental Botany·Catherine N Jacott, Scott A Boden
May 28, 2020·Heredity·Jessica HylesBen Trevaskis
Oct 18, 2020·Journal of Experimental Botany·Matthieu BogardJean-Pierre Cohan
Dec 29, 2020·Communications Biology·Natalia TikhenkoAndreas Börner
Jan 30, 2021·Scientific Reports·Priyanka A BasavaraddiGustavo A Slafer
Oct 16, 2020·Journal of Experimental Botany·Lukas KronenbergAndreas Hund
Feb 13, 2021·Journal of Experimental Botany·Alba Farre MartinezSimon Griffiths

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Methods Mentioned

BETA
PCR
dissection

Software Mentioned

LightCycler
JMP ® Pro

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