Review
Version 1
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Nuclear Fusion in Plant Reproduction
Version 1
: Received: 21 September 2023 / Approved: 21 September 2023 / Online: 21 September 2023 (10:57:58 CEST)
A peer-reviewed article of this Preprint also exists.
Kobayashi, N.; Nishikawa, S.-I. Nuclear Fusion in Yeast and Plant Reproduction. Plants 2023, 12, 3608. Kobayashi, N.; Nishikawa, S.-I. Nuclear Fusion in Yeast and Plant Reproduction. Plants 2023, 12, 3608.
Abstract
Nuclear fusion is essential for the sexual reproduction of various organisms, including plants, animals, and fungi. During the life cycle of flowering plants, nuclear fusion occurs three times: once during female gametogenesis and twice during double fertilization, when two sperm cells fertilize the egg and the central cell. Haploid nuclei migrate in an actin filament-dependent manner to become in close contact, then two nuclei fuse. The nuclear fusion process in plant reproduction is achieved by the sequential nuclear membrane fusion events. Recent molecular genetic analyses using Arabidopsis thaliana showed the conservation of nuclear membrane fusion machinery between plants and the budding yeast Saccharomyces cerevisiae. These include the heat shock protein 70 in the endoplasmic reticulum and conserved nuclear membrane proteins. Analyses of A. thaliana mutants of these components show that completion of the sperm nuclear fusion at fertilization is essential for proper embryo and endosperm development.
Keywords
nuclear fusion; female gametogenesis; fertilization; membrane fusion; flowering plants; budding yeast
Subject
Biology and Life Sciences, Plant Sciences
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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