Sexual and asexual (apomictic) seed development in flowering plants: molecular, morphological and evolutionary relationships

Functional Plant Biology : FPB
Matthew R Tucker, Anna M G Koltunow

Abstract

Reproduction in the flowering plants (angiosperms) is a dynamic process that relies upon the formation of inflorescences, flowers and eventually seed. Most angiosperms reproduce sexually by generating gametes via meiosis that fuse during fertilisation to initiate embryo and seed development, thereby perpetuating the processes of adaptation and evolution. Despite this, sex is not a ubiquitous reproductive strategy. Some angiosperms have evolved an alternate form of reproduction termed apomixis, which avoids meiosis during gamete formation and leads to the production of embryos without paternal contribution. Therefore, apomixis results in the production of clonal progeny through seed. The molecular nature and evolutionary origin of apomixis remain unclear, but recent studies suggest that apomixis evolved from the same molecular framework supporting sex. In this review, we consider physical and molecular relationships between the two pathways, with a particular focus on the initial stages of female reproduction where apomixis deviates from the sexual pathway. We also consider theories that explain the origin of apomictic processes from sexual progenitors. Detailed characterisation of the relationship between sex and apomixis in an...Continue Reading

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Citations

Feb 19, 2010·Sexual Plant Reproduction·Stephan NielenAna Claudia G Araujo
Sep 26, 2012·Sexual Plant Reproduction·Angela R CordleChi-Lien Cheng
Mar 23, 2011·The Plant Journal : for Cell and Molecular Biology·Anna M G KoltunowRoss A Bicknell
Jul 16, 2013·Plant Reproduction·Gianni Barcaccia, Emidio Albertini
Sep 3, 2014·Critical Reviews in Plant Sciences·Diego HojsgaardElvira Hörandl
Mar 2, 2012·Journal of Experimental Botany·Matthew R TuckerAnna M G Koltunow
Oct 30, 2020·Plant Biology·G Yu Vinogradova, N A Zhinkina
Jun 26, 2018·The Science of the Total Environment·Yawen GeXiangdong Yang
Apr 11, 2013·The Plant Cell·Edgar Demesa-Arévalo, Jean-Philippe Vielle-Calzada

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