Table of Contents
Plants, Volume 8, Issue 6 (June 2019)
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Cover Story (view full-size image) Pollen tube growth is a specialized process critical to reproduction in Angiosperms. The tubes [...] Read more. Pollen tube growth is a specialized process critical to reproduction in Angiosperms. The tubes extend in a rapid highly polarized manner known as “tip growth”. A variety of signaling pathways underlie this process, and Ca2+ and ROP GTPase-mediated pathways have emerged as major players. It is becoming increasingly clear that these two pathways integrate not only with one another but also with a variety of other important signaling events. To fully understand how tip growth in pollen tubes is orchestrated, it is increasingly important to take holistic approaches to studying these pathways. This review highlights the current knowledge of Ca2+-mediated and ROP GTPase signaling pathways in pollen tube growth, their intersection, and potential cross-talk with additional signaling pathways. View this paper.