"It's getting hot in here - High temperature signalling in plants"

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Thursday 20 June 2019, 11:00 - 12:30


High ambient temperature has numerous effects on plant growth and development. Our knowledge on thermal sensing and response mechanisms in plants has been increasing in the past years; mostly through genetics and by focusing on transcriptional changes and associated networks. However, many missing links in the thermal signalling cascades are likely governed by various post-translational modifications. To identify these, we applied quantitative phosphoproteomics to Arabidopsis seedlings exposed to high ambient temperature. The dynamic changes in our time course samples allowed reverse engineering the associated signalling network and pinpointing several thermoresponsive phosphoproteins, referred to as TOTORO/TARGET OF TEMPERATURE (TOT) candidates. The unprecedented signalling network revealed interplaying protein kinases, phosphatases and their targets. These are linked to diverse cellular processes, providing us with an entry point to gain mechanistic insight into the regulation of distinct pathways by high temperature and the integration of those various signals in a global response. In parallel, we use a similar approach to identify novel high temperature signalling components in wheat. Taken together, we have already identified several novel signalling pathways involved in high temperature-mediated plant growth, and I will present our latest results.

Location Jozef Schell Seminar Room
Contact Prof Ive De Smet
VIB-UGent Center for Plant Systems Biology