Dr. T.H. (Tom) Rankenberg

Hugo R. Kruytgebouw
Padualaan 8
3584 CH Utrecht

Dr. T.H. (Tom) Rankenberg

Researcher
Plant Stress Resilience
t.h.rankenberg@uu.nl

Floods stress plants in multiple ways: gas exchange and photosynthesis are both severely limited by submergence in turbid water. However, these are not the only hurdles that a plant must pass to survive a flood. When floodwaters recede, and a plant that has adjusted itself to submerged conditions is exposed to air and light, this poses a whole new array of stresses. Plants experience a burst of oxidative stress, ethylene signaling causes tissues to shift to senescence, leaves rapidly lose water through their stomata, and the plant can barely make up for this water loss because of its damaged root system. Upon desubmergence plants often dry out, even though there is still plenty of water available in the soil. Our earlier research has shown a signaling network underlying these processes during submergence recovery (Yeung et al., 2018). In my project I will use different Arabidopsis mutants to further peel apart the network of interacting processes during submergence recovery. Understanding more about the signaling interactions occurring during submergence recovery is essential to develop crops that are more tolerant to flooding.