DSSS - Signaling Processes during Plant Reproduction Involve Distinct Mechanisms

Research in our laboratory focuses on the developmental genetics of plant reproduction, with an emphasis on epigenetic gene regulation and cell-cell communication during double fertilization. Fertilization depends on the proper reception of the pollen tube by the synergid cells, involving a complex interplay mediated by calcium signaling. We have shown that receptor kinases of the CrRLK1L subfamily play an important role in reproduction, with the FERONIA receptor kinase acting in the synergids to mediate proper pollen tube reception. We are currently investigating the events occurring immediately prior to fertilization once the pollen tube interacts with the synergid cell. Upon proper pollen tube reception, the pollen tube ruptures and releases the two sperm cells to effect double fertilization. How exactly fertilization triggers the development of the two fertilization products, the embryo and endosperm, is still not well understood. In this seminar, I will report on our progress in deciphering the signals and underlying mechanisms that control these important steps in plant reproduction.