title: New insights of red light-induced development.
abstract: The red/far-red light absorbing photoreceptors phytochromes regulate development and growth and thus play an essential role in optimizing adaptation of the sessile plants to the ever-changing environment. Our understanding of how absorption of a red/far-red photon by phytochromes initiates/modifies diverse physiological responses has been steadily improving. Research performed in the last 5 years has been especially productive and led to significant conceptual changes about the mode of action of these photoreceptors. In this review, we focus on the phytochrome B photoreceptor, the major phytochrome species active in light-grown plants. We discuss how its light-independent inactivation (termed dark/thermal reversion), post-translational modification, including ubiquitination, phosphorylation and sumoylation, as well as heterodimerization with other phytochrome species modify red light-controlled physiological responses. Finally, we discuss how photobiological properties of phytochrome B enable this photoreceptor to function also as a thermosensor.
authors.affiliation: Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726, Szeged, Hungary.
authors.forename: András
authors.initials: A
authors.lastname: Viczián
authors.affiliation: Institute of Biology2/Botany, University of Freiburg, Schänzlestrasse 1, D-79104, Freiburg, Germany.
authors.forename: Cornelia
authors.initials: C
authors.lastname: Klose
authors.affiliation: Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726, Szeged, Hungary.
authors.forename: Éva
authors.initials: É
authors.lastname: Ádám
authors.affiliation: Institute of Plant Biology, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, H-6726, Szeged, Hungary.|Institute of Molecular Plant Science, School of Biological Sciences, University of Edinburgh, Edinburgh, EH9 3JH, UK.
authors.forename: Ferenc
authors.initials: F
authors.lastname: Nagy
mesh_terms: D008027:Light; D010834:Phytochrome / Q000737:chemistry / Q000378:metabolism; D063245:Plant Development / Q000528:radiation effects*; D011499:Protein Processing, Post-Translational / Q000528:radiation effects; D015398:Signal Transduction / Q000528:radiation effects; D013696:Temperature
chemical_list: D010834:Phytochrome
keywords: SUMO; dark reversion; phosphorylation; photomorphogenesis; phytochrome B; temperature sensing