Phylogenetic Analysis of Chlorophyte Algae
Summary
Chlorophyte algae, encompassing classes such as Chlorophyceae, Ulvophyceae and Trebouxiophyceae, form a pivotal component of global aquatic ecosystems and represent key models for understanding primary endosymbiosis and the evolution of complex multicellularity. Phylogenetic analysis in this group has progressed from single‐gene markers towards genome‐scale and transcriptome‐based approaches, revealing deep divergences, cryptic speciation and repeated origins of colonial and multicellular forms. High‐throughput sequencing of chloroplast, mitochondrial and nuclear loci, coupled with molecular‐clock calibration against fossil or geological benchmarks, now permits reconstruction of divergence times and ancestral character states. These studies have clarified the monophyly or polyphyly of traditional orders, unveiled rapid radiations in marine lineages and traced adaptive shifts associated with terrestrialisation and varied light regimes. Through integrative phylogenomics, researchers are refining taxonomy, illuminating the genetic basis of key innovations such as anisogamy and oogamy, and linking evolutionary history to ecological functions including carbon fixation and biotechnological applications.
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Phylogenetic Analysis of Chlorophyte Algae publication trend
The graph below shows the total number of articles in phylogenetic analysis of chlorophyte algae across all publications each year (not limited to Nature Index journals).
Technical terms
Phylogenomics: Use of genome-scale sequence data to infer evolutionary relationships.
Molecular clock: Method estimating species divergence times by correlating genetic change with time, often calibrated by fossils.
Monophyly: A group composed of an ancestor and all of its descendants, reflecting a single evolutionary lineage.
Polyphyly: A group containing members from multiple ancestral origins, excluding their most recent common ancestor.
Plastome: The complete genome housed within a chloroplast, encoding genes for photosynthesis and organelle function.
Transcriptome: The full complement of RNA transcripts expressed by an organism or specific cell type at a given time.
References
- Fossil-calibrated molecular clock data enable reconstruction of steps leading to differentiated multicellularity and anisogamy in the Volvocine algae. BMC Biology (2024).
- Novel insights into chloroplast genome evolution in the green macroalgal genus Ulva (Ulvophyceae, Chlorophyta). Frontiers in Plant Science (2023).
- Phylotranscriptomic and Evolutionary Analyses of Oedogoniales (Chlorophyceae, Chlorophyta). Diversity (2022).
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