Root senescence processes as determinants of root performance in barley
Cevza Esin Tunc, Nicolaus von Wirén
Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), Gatersleben
While leaf senescence is a well-characterized developmental program triggering leaf death and nutrient remobilization, senescence processes in roots are poorly understood, despite their importance for sustained root activity. Our previous studies have identified morphological and physiological processes as well as putative molecular regulators and markers related to root senescence in barley. Based on these results, the planned project aims at i) investigating the role of abscisic acid as a trigger for root senescence, ii) verifying the function of one MYB- and one WRKY-type transcription factor in root senescence, and iii) validating the benefit of prolonged root activity for nutrient uptake and root performance in barley.