Pollen tube integrity regulation in flowering plants insights from molecular assemblies on the pollen tube surface

Pollen tube integrity regulation in flowering plants : insights from molecular assemblies on the pollen tube surface

© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 222(2019), 2 vom: 15. Apr., Seite 687-693
1. Verfasser: Ge, Zengxiang (VerfasserIn)
Weitere Verfasser: Cheung, Alice Y, Qu, Li-Jia
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, U.S. Gov't, Non-P.H.S. Review CrRLK1L family receptors RALF peptides fertilization pollen tube integrity sperm release Peptides Reactive Oxygen Species Receptors, Cell Surface
Beschreibung
Zusammenfassung:© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.
Contents Summary 687 I. Introduction 687 II. Pollen tube membrane-localized receptors coordinate cell integrity and sperm release 689 III. RALF peptides mediate autocrine and paracrine signaling 689 IV. ROS and ion channel signaling mediate intracellular response 690 V. Involvements from pollen tube cell wall components 690 VI. Concluding remarks 691 Acknowledgements 692 Author contributions 692 References 692 SUMMARY: Unlike in animals, sperm in flowering plants are immotile and they are embraced as passive cargoes by a pollen tube which embarks on a long journey in the pistil to deliver them to the female gametophyte for fertilization. How the pollen tube switches from a rapid polarized growth towards its target to an abrupt disintegration for sperm cell release inside the female gametophyte is puzzling. Recent studies have shown that members of the Catharanthus roseus RLK1-like (CrRLK1L) receptor kinase family and their ligands, 5-kDa cysteine-rich peptide rapid alkalinization factors (RALFs), engage in an intricate balancing act involving autocrine and paracrine signaling to maintain pollen tube growth and induce timely tube rupture at the spatially confined pollen tube-female gametophyte interface. Here, we review recent progress related to pollen tube integrity control, mainly focusing on the molecular understanding of signaling as well as intracellular signaling nodes in Arabidopsis. Some missing links and future perspectives are also discussed
Beschreibung:Date Completed 27.02.2020
Date Revised 30.09.2020
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.15645