Light Quality and Intensity Modulate Cold Acclimation in Arabidopsis.

ABSTRACT: Plant survival in temperate zones requires efficient cold acclimation, which is strongly affected by light and temperature signal crosstalk, which converge in modulation of hormonal responses. Cold under low light conditions affected Arabidopsis responses predominantly in apices, possibly because energy supplies were too limited for requirements of these meristematic tissues, despite a relatively high steady-state quantum yield. Comparing cold responses at optimal light intensity and low light, we found activation of similar defence mechanisms-apart from CBF1-3 and CRF3-4 pathways, also transient stimulation of cytokinin type-A response regulators, accompanied by fast transient increase of trans-zeatin in roots. Upregulated expression of components of strigolactone (and karrikin) signallin

SUBMITTER: Prerostova S 

PROVIDER: S-EPMC7962961 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature