Post-translational regulation of SHORT VEGETATIVE PHASE as a major mechanism for thermoregulation of flowering

Plant Signaling & Behavior
Jeong Hwan LeeJi Hoon Ahn

Abstract

In contrast to our extensive knowledge of vernalization, we know relatively little about the regulation of ambient temperature-responsive flowering. Recent reports revealed that FLOWERING LOCUS M (FLM) and SHORT VEGETATIVE PHASE (SVP) regulate high ambient temperature-responsive flowering through two different mechanisms: degradation of SVP protein and formation of a non-functional SVP-FLM-δ complex. To investigate further the mechanism of thermoregulation of flowering, we performed real-time quantitative polymerase chain reaction (RT-qPCR) and in vitro pull-down assays. We found that FLM-β and FLM-δ transcripts show similar absolute levels at different temperatures. Also, His-SVP protein bound to the GST-FLM-β or -δ proteins with similar binding intensities. These results suggest that functional SVP-FLM-β and non-functional SVP-FLM-δ complexes form similarly at warmer temperatures, thus indicating that post-translational regulation of SVP functions as a major mechanism for thermoregulation in flowering.

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Citations

May 2, 2014·Trends in Plant Science·Leonie VerhageRichard G H Immink
Oct 7, 2015·Photochemistry and Photobiology·Christian D LorenzoPablo D Cerdán
Feb 28, 2015·The Plant Journal : for Cell and Molecular Biology·Marja RantanenTimo Hytönen
Jul 22, 2018·Journal of Integrative Plant Biology·Bingjie LiWenqiang Tang
Dec 22, 2015·Science China. Life Sciences·Li LiHongtao Liu
Oct 19, 2014·Journal of Experimental Botany·Giovanna CapovillaDavid Posé
Dec 19, 2020·Frontiers in Plant Science·Keh Chien LeeJeong-Kook Kim
Feb 6, 2017·Journal of Experimental Botany·Rongmei WuErika Varkonyi-Gasic
Sep 10, 2021·Plant & Cell Physiology·Asanga Deshappriya NagallaTakeshi Izawa

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