ROP GTPases are key regulators of cellular polarity in plants. We aim to reveal the link of ROP GTPases to various kinases (upstream/downstream) in order to have new insights into the regulation of cell polarity during morphogenesis, tip growth and fungal invasion of cells. In previous publications we provided experimental data that ROPs can regulate kinases and they can also be regulated through phosphorylation. We aim to use the obtained knowledge to build up a general model for receptor signaling in plants; from receptor kinases to ROP effectors.
Plant cells possess remarkable developmental plasticity. One of the most intriguing examples of this plasticity is in vitro plant regeneration either via somatic embryogenesis (SE) or organogenesis during which differentiated plant cells develop into embryos, shoots, or roots, respectively. Despite the fact that these processes are widely used for in vitro plant propagation, the biological background of these plant-specific phenomena is hardly known. Currently we focus on the role of redox regulation and polyamines in these processes.
Plants exhibit a remarkable developmental plasticity as a consequence of their sessile way of life. During plant ontogenesis, exogenous (environmental) and endogenous (developmental) signals converge on interlinked signaling pathways having dynamic impacts on plant form and function. We use molecular, biochemical and cellular approaches to reveal and characterize plant-specific pathways of cellular signaling that underlie this developmental plasticity.