Reproduction Multitasking: The Male Gametophyte

0548983 - ÚEB 2022 RIV US eng J - Journal Article
Hafidh, Said - Honys, David
Reproduction Multitasking: The Male Gametophyte.
Annual Review of Plant Biology. Roč. 72, June (2021), s. 581-614. ISSN 1543-5008. E-ISSN 1545-2123
R&D Projects: GA ČR(CZ) GA17-23203S; GA ČR(CZ) GA17-23183S; GA ČR(CZ) GA18-02448S; GA MŠMT(CZ) LTAUSA18115; GA MŠMT LTAIN19030; GA MŠMT(CZ) EF16_019/0000738
Grant - others:OPPK(XE) CZ.2.16/3.1.00/21519
Institutional support: RVO:61389030
Keywords : cell cell communication * double fertilization * heterospory * male gametophyte * pollen tube guidance * translation regulation
OECD category: Plant sciences, botany
Impact factor: 28.310, year: 2021
Method of publishing: Open access
http://doi.org/10.1146/annurev-arplant-080620-021907

The gametophyte represents the sexual phase in the alternation of generations in plants, the other, nonsexual phase is the sporophyte. Here, we review the evolutionary origins of the male gametophyte among land plants and, in particular, its ontogenesis in flowering plants. The highly reduced male gametophyte of angiosperm plants is a two- or three-celled pollen grain. Its task is the production of two male gametes and their transport to the female gametophyte, the embryo sac, where double fertilization takes place. We describe two phases of pollen ontogenesis mdash a developmental phase leading to the differentiation of the male germline and the formation of a mature pollen grain and a functional phase representing the pollen tube growth, beginning with the landing of the pollen grain on the stigma and ending with double fertilization. We highlight recent advances in the complex regulatory mechanisms involved, including posttranscriptional regulation and transcript storage, intracellular metabolic signaling, pollen cell wall structure and synthesis, protein secretion, and phased cell-cell communication within the reproductive tissues.
Permanent Link: http://hdl.handle.net/11104/0325017