Proteomics

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The F-box protein SLOW MOTION regulates hypocotyl growth in Arabidopsis

ABSTRACT: Here, in a time-course phosphoproteome analysis on Arabidopsis seedlings exposed to control or high ambient temperature, we observed reduced levels of diverse proteins over time, which could be in part due to transcription, translation and/or degradation. In addition, we observed differential phosphorylation of the LRR F-box protein SLOMO MOTION (SLOMO) at two serine residues. We demonstrated that SLOMO is a negative regulator of hypocotyl growth, and protein-protein interaction studies revealed possible interactors of SLOMO.

INSTRUMENT(S): Q Exactive

ORGANISM(S): Arabidopsis Thaliana (mouse-ear Cress)

TISSUE(S): Plant Cell, Seedling

SUBMITTER: Lam Dai Vu  

LAB HEAD: Ive De Smet

PROVIDER: PXD035922 | Pride | 2025-05-26

REPOSITORIES: Pride

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Phosphoproteome analyses pinpoint the F-box protein SLOW MOTION as a regulator of warm temperature-mediated hypocotyl growth in Arabidopsis.

Zhu Shanshuo S   Pan Lixia L   Vu Lam Dai LD   Xu Xiangyu X   Orosa-Puente Beatriz B   Zhu Tingting T   Neyt Pia P   van de Cotte Brigitte B   Jacobs Thomas B TB   Gendron Joshua M JM   Spoel Steven H SH   Gevaert Kris K   De Smet Ive I  

The New phytologist 20231110 2

Hypocotyl elongation is controlled by several signals and is a major characteristic of plants growing in darkness or under warm temperature. While already several molecular mechanisms associated with this process are known, protein degradation and associated E3 ligases have hardly been studied in the context of warm temperature. In a time-course phosphoproteome analysis on Arabidopsis seedlings exposed to control or warm ambient temperature, we observed reduced levels of diverse proteins over ti  ...[more]

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