Pollen tubes require a tightly regulated pectin secretion machinery to sustain the cell wall plasticity required for polar tip growth. Phosphoinositides and phosphatidic acid are nvolved in this regulation at the apical plasma membrane, but the processes regulating their production are still unclear. In collaboration with Till Ischebeck group from the University of Göttingen, we described that diacylglycerol kinase 5 plays major role in the regulation of pectin secretion in tip growing pollen tubes.

Scholz P#, Pejchar P#*, Fernkorn M, Škrabálková E, Pleskot R, Blersch B, Munnik T, Potocký M, Ischebeck T* (2022) DIACYLGLYCEROL KINASE 5 regulates polar tip growth of tobacco pollen tubes. NEW PHYTOLOGIST, in press, DOI:10.1111/nph.17930