Dresselhaus, Thomas and Sprunck, Stefanie and Wessel, Gary M. (2016) Fertilization Mechanisms in Flowering Plants. CURRENT BIOLOGY, 26 (3). R125-R139. ISSN 0960-9822, 1879-0445
Full text not available from this repository. (Request a copy)Abstract
Compared with the animal kingdom, fertilization is particularly complex in flowering plants (angiosperms). Sperm cells of angiosperms have lost their motility and require transportation as a passive cargo by the pollen tube cell to the egg apparatus (egg cell and accessory synergid cells). Sperm cell release from the pollen tube occurs after intensive communication between the pollen tube cell and the receptive synergid, culminating in the lysis of both interaction partners. Following release of the two sperm cells, they interact and fuse with two dimorphic female gametes (the egg and the central cell) forming the major seed components embryo and endosperm, respectively. This process is known as double fertilization. Here, we review the current understanding of the processes of sperm cell reception, gamete interaction, their pre-fertilization activation and fusion, as well as the mechanisms plants use to prevent the fusion of egg cells with multiple sperm cells. The role of Ca2+ is highlighted in these various processes and comparisons are drawn between fertilization mechanisms in flowering plants and other eukaryotes, including mammals.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POLLEN-TUBE GUIDANCE; SPERM-EGG FUSION; CELL-CELL FUSION; MALE-GAMETE DELIVERY; ARABIDOPSIS-THALIANA; MAMMALIAN FERTILIZATION; FEMALE GAMETOPHYTE; SYNERGID DEGENERATION; SINGLE FERTILIZATION; EARLY EMBRYOGENESIS; |
| Subjects: | 500 Science > 570 Life sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Pflanzenwissenschaften > Lehrstuhl für Zellbiologie und Pflanzenphysiologie (Prof. Dr. Klaus Grasser) |
| Depositing User: | Petra Gürster |
| Date Deposited: | 03 Sep 2020 06:51 |
| Last Modified: | 03 Sep 2020 06:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/2412 |
Actions (login required)
 |
View Item |
