August 28, 2024

Large genomes are associated with greater cells, nitrogen-rich and high-latitude environments in the protist Synura

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Authors

DČDora ČertnerováUniversität Innsbruck PŠPavel ŠkaloudCharles University IJIva JadrnáCharles University

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Phylogenetic analysis reveals larger genomes scale with cell size and cold habitats in Synura microalgae, suggesting evolutionary constraints limit their ecological niche.

Key Points

Genome size variation in Synura microalgae primarily drives cell size expansion, and larger genomes correspond to colder, nitrogen-rich environments at higher latitudes.
Nuclear DNA content spans from 0.19 to 3.70 pg across evaluated lineages, associating strongly with cell size rather than the dimensions of silica scales.
Assessment using flow cytometry across 53 lineages reconstructed evolutionary history in a phylogenetic framework, testing predictors of genomic variation.
Highlights evolutionary constraints on upper genome size limits, as lineages with expanded DNA show lower macroevolutionary stability and narrower ecological niches.

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Čertnerová et al. (2024) studied this question.

synapsesocial.com/papers/68e5aa5ab6db64358754429e https://doi.org/10.22541/au.172481738.82245163/v1

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Implication

Phylogenetic analysis reveals larger genomes scale with cell size and cold habitats in Synura microalgae, suggesting evolutionary constraints limit their ecological niche.

Large genomes are associated with greater cells, nitrogen-rich and high-latitude environments in the protist Synura

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Member takes

Implication

Key Points

Cite This Study

Large genomes are associated with greater cells, nitrogen-rich and high-latitude environments in the protist Synura

Discussion

Member takes

Implication

Key Points

Cite This Study

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