Aliz Novák, Ákos Boldizsár, Krisztián Gierczik, Attila Vágújfalvi, Éva Ádám, László Kozma-Bognár, Gábor Galiba
Plant Molecular Biology Reporter; August 2017, Volume 35, Issue 4, pp 399–408
Abstract
The wheat and barley CBF14 genes have been newly defined as key components of the light quality-dependent regulation of the freezing tolerance by the integration of phytochrome-mediated light and temperature signals. To further investigate the wavelength dependence of light-induced CBF14 expression in cereals, we carried out a detailed study using monochromatic light treatments at an inductive and a non-inductive temperature. Transcript levels of CBF14 gene in winter wheat Cheyenne, winter einkorn G3116 and winter barley Nure genotypes were monitored. We demonstrated that (1) CBF14 is most effectively induced by blue light and (2) provide evidence that this induction does not arise from light-controlled CRY gene expression. (3) We demonstrate that temperature shifts induce CBF14 transcription independent of the light conditions and that (4) the effect of temperature and light treatments are additive. Based on these data, it can be assumed that temperature and light signals are relayed to the level of CBF14 expression via separate signalling routes
See: https://link.springer.com/article/10.1007/s11105-017-1035-1
Figure 6: The combined effect of light and temperature on cryptochrome expression. Relative expression of CRYs at 15 °C after 4 or 8 h of R, FR and B light treatment in Nure (a), Cheyenne (b) andG3116 (c). Control plants were kept in the dark for 4 or 8 h at 20 °C. Different letters indicate statistically different (P < 0.05) expression levels, where a represents the 4- or 8-h control treatment. Results of the comprehensive set of statistical analysis are shown in S2 Table
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