Photoreceptor PhyB Involved in Arabidopsis Temperature Perception and Heat-Tolerance Formation

• Published in: International journal of molecular sciences Vol. 18; no. 6; p. 1194
• Main Authors: Song, Junyi, Liu, Qijun, Hu, Biru, Wu, Wenjian
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 05.06.2017; MDPI
• Subjects: Arabidopsis; Arabidopsis - physiology; Arabidopsis thaliana; Bioinformatics; Biological activity; Computational Biology; Crosstalk; Gene Expression Profiling; Gene Expression Regulation, Plant - radiation effects; Gene Ontology; Genes; Genotype; Heat; Heat shock proteins; Heat stress; heat stress response; High temperature; In vivo methods and tests; interplay between abiotic stresses; Light; Metabolism; Molecular machines; Ontology; Perception; Photoreceptor Cells - metabolism; photoreceptor-phyB; Photoreceptors; Physiology; Phytochrome B - genetics; Phytochrome B - metabolism; Radiation; Stress, Physiological - genetics; Temperature; Temperature perception; Temperature tolerance; Thermal response; Thermotolerance - genetics; Transcription factors; Transcriptome; transcriptomic and morphological analysis; Transcriptomics; Arabidopsis thaliana; photoreceptor-phyB; transcriptomic and morphological analysis; heat stress response; interplay between abiotic stresses
• ISSN: 1422-0067; 1661-6596; 1422-0067
• DOI: 10.3390/ijms18061194

The influence of temperature on plants is essential. However, our knowledge on the intricate regulation process underlying heat stress (HS) response in plants is limited. Recently, information about thermal sensors in vivo has begun to emerge. In this study, another primary environmental stimulus, light, was verified once again to work with temperature synergistically on plants, through the modulation of numerous biological processes. With the application of transcriptomic analysis, a substantial number of heat-responsive genes were detected involved in both light- and phytohormone-mediated pathways in During this process, phytoreceptor phyB acts as a molecular switch to turn on or turn off several other genes HS response, under different light conditions. Furthermore, a morphological study showed the afunction of phyB enhanced plants thermal tolerance, confirming the important role of this phytochrome in temperature perception and response in plants. This study adds data to the picture of light and temperature signaling cross-talk in plants, which is important for the exploration of complicated HS responses or light-mediated mechanisms. Furthermore, based on its influence on thermal response in both morphological and physiological levels, phyB is a photoreceptor, as revealed before, as well as an essential thermal sensor in plants.