Plant Science Colloquium
Plant Science Colloquium with Jun. Prof. Dr. Sjon Hartman on “Remember the Rain: Unravelling How Plants Encode Flooding Stress Memory”.
Time
Friday, 07.07.23 - 12:15 PM
- 01:15 PM
Event format
Talk
Topic
Plants can respond differently to (stress) signals depending on their environmental history, and many species have the capacity for stress memory that is typically mediated by epigenetic processes. Our results reveal that plants display enhanced flooding tolerance if they experienced flooding stress earlier in life. Moreover, we show that Arabidopsis plants deficient in the oxygen-sensitive histone modifying Polycomb Repressive Complex 2 subunit VERNALIZATION 2 (VRN2) have reduced capacity to induce this stress memory, suggesting an epigenetic basis for this effect. Using VRN2 reporter lines, we show how the flooding signals ethylene and hypoxia spatiotemporally control VRN2. We also quantified the transcriptional signature of VRN2-dependent flooding memory genes. Our results suggest that Arabidopsis plants use a VRN2-dependent flooding memory mechanism to tune their development and transcriptional stress response to promote long-term flooding resilience. Collectively, I will outline our research that aims to uncover how plants integrate the flooding signals to encode flooding memory and enhance their survival chances in response to future flooding events.
Speaker
Jun. Prof. Dr. Sjon Hartman, CIBSS, University of Freiburg
Target groups
Students
Researchers
Location
Nussallee 4
Room
Hörsaal Botanik
Reservation
not required
Organizer
Botanisches Kolloquium
Contact