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Int. J. Mol. Sci. 2017, 18(6), 1194; doi:10.3390/ijms18061194

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

1,†
,
1,†
,
1,* and 1,2
1
College of Science, National University of Defense Technology, Changsha 410073, China
2
State Key Lab of Nuclear, Biological and Chemical Protection for Civilian, Beijing 102205, China
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Hikmet Budak
Received: 17 February 2017 / Revised: 30 May 2017 / Accepted: 31 May 2017 / Published: 5 June 2017
(This article belongs to the Special Issue Abiotic Stress and Gene Networks in Plants 2017)
View Full-Text   |   Download PDF [2611 KB, uploaded 5 June 2017]   |  

Abstract

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 Arabidopsis. 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 Arabidopsis thermal response in both morphological and physiological levels, phyB is a photoreceptor, as revealed before, as well as an essential thermal sensor in plants. View Full-Text
Keywords: Arabidopsis thaliana; heat stress response; transcriptomic and morphological analysis; photoreceptor-phyB; interplay between abiotic stresses Arabidopsis thaliana; heat stress response; transcriptomic and morphological analysis; photoreceptor-phyB; interplay between abiotic stresses
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Song, J.; Liu, Q.; Hu, B.; Wu, W. Photoreceptor PhyB Involved in Arabidopsis Temperature Perception and Heat-Tolerance Formation. Int. J. Mol. Sci. 2017, 18, 1194.

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