CH0013_DTDB_TWELL_v3.1_2018.pdf (12.7 MB)
The evolution and patterning of male gametophyte development
journal contributionposted on 2019-01-04, 12:49 authored by Dieter Hackenberg, David Twell
The reproductive adaptations of land plants have played a key role in their terrestrial colonization and radiation. This encompasses mechanisms used for the production, dispersal and union of gametes to support sexual reproduction. The production of small motile male gametes and larger immotile female gametes (oogamy) in specialized multicellular gametangia evolved in the charophyte algae, the closest extant relatives of land plants. Reliance on water and motile male gametes for sexual reproduction was retained by bryophytes and basal vascular plants, but was overcome in seed plants by the dispersal of pollen and the guided delivery of non-motile sperm to the female gametes. Here we discuss the evolutionary history of male gametogenesis in streptophytes (green plants) and the underlying developmental biology, including recent advances in bryophyte and angiosperm models. We conclude with a perspective on research trends that promise to deliver a deeper understanding of the evolutionary and developmental mechanisms of male gametogenesis in plants.
D.H. was supported within the ERA-CAPS project EVOREPRO by the Biotechnology and Biological Research Council (BB/N005090/1 to D.T.).
CitationCurrent Topics in Developmental Biology, 2019, 131, pp. 257-298
Author affiliation/Organisation/COLLEGE OF LIFE SCIENCES/Biological Sciences/Genetics and Genome Biology
- AM (Accepted Manuscript)