Meiosis, unreduced gametes, and parthenogenesis: implications for engineering clonal seed formation in crops

Plant Reproduction
Arnaud Ronceret, Jean-Philippe Vielle-Calzada

Abstract

Meiosis and unreduced gametes. Sexual flowering plants produce meiotically derived cells that give rise to the male and female haploid gametophytic phase. In the ovule, usually a single precursor (the megaspore mother cell) undergoes meiosis to form four haploid megaspores; however, numerous mutants result in the formation of unreduced gametes, sometimes showing female specificity, a phenomenon reminiscent of the initiation of gametophytic apomixis. Here, we review the developmental events that occur during female meiosis and megasporogenesis at the light of current possibilities to engineer unreduced gamete formation. We also provide an overview of the current understanding of mechanisms leading to parthenogenesis and discuss some of the conceptual implications for attempting the induction of clonal seed production in cultivated plants.

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Citations

Nov 5, 2016·Cell Research·Delphine MieuletRaphael Mercier
Jan 31, 2019·Journal of Integrative Plant Biology·En XieZhukuan Cheng
May 13, 2020·International Journal of Molecular Sciences·Christoph C F SchinkelElvira Hörandl
Nov 9, 2018·Frontiers in Plant Science·Micaela ManciniSilvina C Pessino
Jul 16, 2020·Genes·Armin Scheben, Diego Hojsgaard
Dec 21, 2018·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Kamila KalinowskaAndreas Houben
Jun 15, 2019·Plant Biotechnology Journal·Ian FayosEmmanuel Guiderdoni
Apr 15, 2021·Journal of Experimental Botany·Tejas ThondehaalmathRavi Maruthachalam
Jun 8, 2021·Physiology and Molecular Biology of Plants : an International Journal of Functional Plant Biology·Xiaoyu ZhangDeyi Yuan
Aug 6, 2021·Frontiers in Plant Science·Pallas KuoChristophe Lambing

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