Reproductive Strategies in Social Amoeba

Fukuzawa, Masashi

doi:10.1007/978-4-431-56609-0_11

Cited by 1 publication

(2 citation statements)

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“…The sexual cycle of dictyostelids shares a number of features with their better-known asexual developmental cycle. Dictyostelid sexual development is triggered, in part, by depletion of bacterial prey; it involves the aggregation of amoebae responding to secreted chemoattractants; mesoscopic structures containing cellulose and other biopolymers are constructed collectively; and individual cells have dramatically different fates, with some being sacrificed for the ultimate benefit of others (Bloomfield, 2013;Fukuzawa, 2018;Raper, 1984). However, the differences between these two developmental programmes are profound: in sexual aggregates, zygote cells consume the cells that surround them as the latter lay down walls around the outer surface of each aggregate.…”

Section: Introductionmentioning

confidence: 99%

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Sex and macrocyst formation in Dictyostelium

Bloomfield¹

2019

Int. J. Dev. Biol.

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Sex in Dictyostelia involves a remarkable form of cannibalism in which zygotes attract large numbers of surrounding amoebae and then ingest them. Before they are consumed, the attracted amoebae help the zygote by synthesising an outer wall around the aggregate that traps them inside and helps to protect the mature developed zygotic structure, the macrocyst. Competition between cells vying to contribute genetically to zygotes and through to the next generation seems likely to have promoted the evolution of several unusual features of dictyostelid sex: individual species often have more than two mating types, increasing haploid cells' chances of matching with a compatible partner, and fusion of many gametes to form transient syncytia allows cytoplasmic mixing and lateral transmission of mitochondrial genomes. This review will summarise recent advances in our understanding of mating-type determination, gamete fusion, and inheritance in Dictyostelium, and highlight the key gaps in our understanding of this fascinating set of phenomena.

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Section: Introductionmentioning

confidence: 99%

“…1). Furthermore, sexual development is favoured when starving cells are submerged, and, unlike asexual development, only occurs efficiently in the dark (Bloomfield, 2013;Fukuzawa, 2018;Raper, 1984).…”

Section: Introductionmentioning

confidence: 99%

Sex and macrocyst formation in Dictyostelium

Bloomfield¹

2019

Int. J. Dev. Biol.

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Reproductive Strategies in Social Amoeba

Cited by 1 publication

References 99 publications

Sex and macrocyst formation in Dictyostelium

Sex and macrocyst formation in Dictyostelium

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