Rigal, Adeline
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
Sammanfattning
Peptides derived from non-functional precursors play important roles in various developmental processes, but also in (a)biotic stress signaling. Our (phospho)proteome-wide analyses of C-TERMINALLY ENCODED PEPTIDE 5 (CEP5)-mediated changes revealed an impact on abiotic stress-related processes. Drought has a dramatic impact on plant growth, development and reproduction, and the plant hormone auxin plays a role in drought responses. Our genetic, physiological, biochemical, and pharmacological results demonstrated that CEP5-mediated signaling is relevant for osmotic and drought stress tolerance in Arabidopsis, and that CEP5 specifically counteracts auxin effects. Specifically, we found that CEP5 signaling stabi-lizes AUX/IAA transcriptional repressors, suggesting the existence of a novel peptide-dependent control mechanism that tunes auxin signaling. These observations align with the recently described role of AUX/IAAs in stress tolerance and provide a novel role for CEP5 in osmotic and drought stress tolerance.
Publicerad i
Molecular and Cellular Proteomics
2020, volym: 19, nummer: 8, sidor: 1248-1262
SLU författare
Ljung, Karin
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
Robert, Stephanie
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
- Institutionen för skoglig genetik och växtfysiologi, Sveriges lantbruksuniversitet
UKÄ forskningsämne
Biokemi
Molekylärbiologi
Publikationens identifierare
- DOI: https://doi.org/10.1074/mcp.RA119.001826
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/106503