ArticleGenome biology and evolution2016
Evolutionary Dynamics of Chloroplast Genomes in Low Light: A Case Study of the Endolithic Green Alga Ostreobium quekettii.
Article in Genome biology and evolution, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.
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16 citing papers in PubMed, 69 citations in OpenAlex.
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- Scaling Up Species Delimitation From DNA Barcodes to Whole Organelle Genomes: Strong Evidence for Discordance Among Genes and Methods for the Red Alga Dasyclonium.Molecular ecology resources · 2025Article
- Comparative analysis of codon usage patterns in 16 chloroplast genomes of suborder Halimedineae.BMC genomics · 2024Article
- Eukaryotic genomic data uncover an extensive host range of mirusviruses.bioRxiv : the preprint server for biology · 2024Article
- Chloroplast genome structure analysis ofFrontiers in plant science · 2024Article
- Identification of polycistronic transcriptional units and non-canonical introns in green algal chloroplasts based on long-read RNA sequencing data.BMC genomics · 2021Article
- Variation in Plastome Sizes Accompanied by Evolutionary History in Monogenomic Triticeae (Poaceae: Triticeae).Frontiers in plant science · 2021Article
- Analysis of six chloroplast genomes provides insight into the evolution of Chrysosplenium (Saxifragaceae).BMC genomics · 2020Article
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- Subcellular stoichiogenomics reveal cell evolution and electrostatic interaction mechanisms in cytoskeleton.BMC genomics · 2018Article
- The Antarctic sea ice alga Chlamydomonas sp. ICE-L provides insights into adaptive patterns of chloroplast evolution.BMC plant biology · 2018Article
- Large Diversity of Nonstandard Genes and Dynamic Evolution of Chloroplast Genomes in Siphonous Green Algae (Bryopsidales, Chlorophyta).Genome biology and evolution · 2018Article
- Plastid phylogenomics with broad taxon sampling further elucidates the distinct evolutionary origins and timing of secondary green plastids.Scientific reports · 2018Article
- Reference datasets ofData in brief · 2017Article
- Does Cell Size Impact Chloroplast Genome Size?Frontiers in plant science · 2017Article
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Authors and funding
5 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Some photosynthetic organisms live in extremely low light environments. Light limitation is associated with selective forces as well as reduced exposure to mutagens, and over evolutionary timescales it can leave a footprint on species' genomes. Here, we present the chloroplast genomes of four green algae (Bryopsidales, Ulvophyceae), including the endolithic (limestone-boring) alga Ostreobium quekettii, which is a low light specialist. We use phylogenetic models and comparative genomic tools to investigate whether the chloroplast genome of Ostreobium corresponds to our expectations of how low light would affect genome evolution. Ostreobium has the smallest and most gene-dense chloroplast genome among Ulvophyceae reported to date, matching our expectation that light limitation would impose resource constraints reflected in the chloroplast genome architecture. Rates of molecular evolution are significantly slower along the phylogenetic branch leading to Ostreobium, in agreement with the expected effects of low light and energy levels on molecular evolution. We expected the ability of Ostreobium to perform photosynthesis in very low light to be associated with positive selection in genes related to the photosynthetic machinery, but instead, we observed that these genes may be under stronger purifying selection. Besides shedding light on the genome dynamics associated with a low light lifestyle, this study helps to resolve the role of environmental factors in shaping the diversity of genome architectures observed in nature.
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