Two potential evolutionary origins of the fruiting bodies of the dictyostelid slime moulds

Hehmeyer, Jenks

doi:10.1111/brv.12516

Cited by 4 publications

(3 citation statements)

References 146 publications

(200 reference statements)

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“…When the life cycles of Dictyostelids and myxogastrids are compared, the presence of diploid zygotes makes it reasonable to infer that the plasmodial cycle of myxogastrids is comparable to the sexual cycle of Dictyostelids, rather than to the multicellular cycle (see [ 45 , 46 ] for more discussions on this point).…”

Section: A Parallel World Of Multicellular Complexity: the Evolution Of Social Amoebasmentioning

confidence: 99%

Evolution of Multicellular Complexity in The Dictyostelid Social Amoebas

Kin

Schaap

2021

Genes

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Multicellularity evolved repeatedly in the history of life, but how it unfolded varies greatly between different lineages. Dictyostelid social amoebas offer a good system to study the evolution of multicellular complexity, with a well-resolved phylogeny and molecular genetic tools being available. We compare the life cycles of the Dictyostelids with closely related amoebozoans to show that complex life cycles were already present in the unicellular common ancestor of Dictyostelids. We propose frost resistance as an early driver of multicellular evolution in Dictyostelids and show that the cell signalling pathways for differentiating spore and stalk cells evolved from that for encystation. The stalk cell differentiation program was further modified, possibly through gene duplication, to evolve a new cell type, cup cells, in Group 4 Dictyostelids. Studies in various multicellular organisms, including Dictyostelids, volvocine algae, and metazoans, suggest as a common principle in the evolution of multicellular complexity that unicellular regulatory programs for adapting to environmental change serve as “proto-cell types” for subsequent evolution of multicellular organisms. Later, new cell types could further evolve by duplicating and diversifying the “proto-cell type” gene regulatory networks.

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Section: A Parallel World Of Multicellular Complexity: the Evolution Of Social Amoebasmentioning

confidence: 99%

Evolution of Multicellular Complexity in The Dictyostelid Social Amoebas

Kin

Schaap

2021

Genes

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“…When the life cycles of Dictyostelids and myxogastrids are compared, the presence of diploid zygotes makes it reasonable to infer that the plasmodial cycle of myxogastrids is homologous to the sexual cycle of Dictyostelids, rather than the multicellular cycle (see [39,40] for more discussions on this point).…”

Section: "Social Amoebas" In Amoebozoathe Phylogenetic Contextmentioning

confidence: 99%

Evolution of Multicellular Complexity in the Dictyostelid Social Amoebas

Kin¹,

Schaap²

2021

Preprint

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Multicellularity evolved repeatedly in the history of life, but how it unfolded varies greatly between different lineages. Dictyostelid social amoebas offer a good system to study the evolution of multicellular complexity, with a well-resolved phylogeny and molecular genetic tools being available. We compare the life cycles of the Dictyostelids with closely related amoebozoans to show that complex life cycles were already present in the unicellular common ancestor of Dictyostelids. We propose frost resistance as an early driver of multicellular evolution in Dictyostelids and show that the cell signalling pathways for differentiating spore and stalk cells evolved from that for encystation. The stalk cell differentiation program was further modified, possibly through gene duplication, to evolve a new cell type, cup cells, in Group 4 Dictyostelids. Studies in various multicellular organisms including Dictyostelids, volvocine algae, and metazoans suggest as a common principle in the evolution of multicellular complexity that unicellular regulatory programs for adapting to environmental change serve as “proto-cell types” for subsequent evolution of multicellular organisms. Later, new cell types could further evolve by duplicating and diversifying the “proto-cell type” gene regulatory networks.

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“…Myxomycetes are a protist group belonging to the Eumycetozoa ( Kang et al, 2017 ; Hehmeyer, 2019 ). They have played a crucial ecological role in terrestrial habitats and some of those metabolites have also been demonstrated to exhibit antitumor activity, antibacterial activity, and antioxidant activity ( Keller & Everhart, 2010 ; Li et al, 2022 ; Wang, Li & Liu, 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Didymium arenosum, a myxomycete new to science from the confluence of deserts in northwestern China

Wei,

Li,

Liu

et al. 2024

PeerJ

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A new myxomycete species, Didymium arenosum, was described based on morphological evidence and phylogenetic analyses. The species was discovered in the arid region at the confluence of the Badain Jaran desert and Tengger desert on the leaves of Betula platyphylla and was cultivated in a moist chamber culture. Morphologically, the species is distinguished by the greenish-yellow calcium carbonate crystals on the surface and the spores covered with small warts, some of which are connected into a short line. A phylogenetic analysis of D. arenosum strongly supports its classification as a separate clade. The spore to spore agar culture of D. arenosum requires 23 days, and this study provides a detailed description of its life cycle.

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Two potential evolutionary origins of the fruiting bodies of the dictyostelid slime moulds

Cited by 4 publications

References 146 publications

Evolution of Multicellular Complexity in The Dictyostelid Social Amoebas

Evolution of Multicellular Complexity in The Dictyostelid Social Amoebas

Evolution of Multicellular Complexity in the Dictyostelid Social Amoebas

Didymium arenosum, a myxomycete new to science from the confluence of deserts in northwestern China

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