Comparative Plastid Genomics of Glaucophytes

  title={Comparative Plastid Genomics of Glaucophytes},
  author={Adri{\'a}n Reyes-Prieto and Sarah Russell and Francisco Figueroa-Mart{\'i}nez and Christopher J Jackson},

Plastid Genomes from Diverse Glaucophyte Genera Reveal a Largely Conserved Gene Content and Limited Architectural Diversity

Pairwise distances estimated from 19 different plastid genes revealed that the highest sequence divergence between glaucophyte genera is frequently higher than distances between species of different classes within red algae or viridiplants.

Phylogenomic Insights into the Origin of Primary Plastids

The effect of phylogenetic methodology, data quality, alignment trimming strategy, gene and taxon sampling, and the presence of outlier genes loci were investigated and revealed a general lack of support for host monophyly in the shorter individual datasets, but when analyzed together under rigorous data curation and complex mixture evolutionary models, the combined dataset consistently recovered the monophyl of Archaeplastida hosts.

High Sequence Divergence but Limited Architectural Rearrangements in Organelle Genomes of Cyanophora (Glaucophyta) Species

Comparative analyses confirm that the Cyanophora mitochondrial genes accumulate substitutions at 3‐fold higher rates than plastid counterparts, suggesting that mtDNA markers are more appropriate to investigate glaucophyte diversity and evolutionary events that occur at a population level.

Cytometric Analysis of Diverse Glaucophyte Species Reveals Distinctive Signals Useful for Fluorescence-Based Detection and Sorting

It is indicated that the peculiar autofluorescence signal of glaucophytes will facilitate further identification and isolation on novel specimens of this scarce but important algal group.

Extensive chloroplast genome rearrangement amongst three closely related Halamphora spp. (Bacillariophyceae), and evidence for rapid evolution as compared to land plants

A comparison of Halamphora chloroplast genomes to those of land plants indicates diatom chloroplow genomes within this genus may be evolving at least ~4–7 times faster than those ofLand plants.

Direct Repeats Co-occur with Few Short Dispersed Repeats in Plastid Genome of A Spikemoss, Selaginella vardei (Selaginellaceae, Lycophyta)

It is proposed that the unconventional DR structure, co-occurred with extremely few SDRs, plays key role in maintaining the stability of plastome, and reflects a relic of the environmental upheaval during extinction event.

Light-Harvesting in Cyanobacteria and Eukaryotic Algae: An Overview

Light harvesting is the means by which photosynthetic organisms “value-add” their ability to store solar energy in the form of organic compounds, and is one of the few ways that will lead to a



Cyanophora paradoxa Genome Elucidates Origin of Photosynthesis in Algae and Plants

Draft genome and transcriptome data from the basally diverging alga Cyanophora paradoxa are analyzed and provide evidence for a single origin of the primary plastid in the eukaryote supergroup Plantae.

Analysis of the Genome of Cyanophora paradoxa : An Algal Model for Understanding Primary Endosymbiosis

Key insights about Plantae evolution that were gleaned from a recent analysis of a draft genome assembly from Cyanophora paradoxa (Glaucophyta) are reviewed and results that conclusively demonstrate Plantae monophyly are presented.

Differential gene retention in plastids of common recent origin.

This study sequenced the plastid genome from the recently described Paulinella FK01 and compared the sequence with the existing data from the sister taxonPaulinella M0880/a, demonstrating that plastids genomes in sister taxa are strongly constrained by selection but follow distinct trajectories during the earlier phases of organelle evolution.

The Photosynthetic Apparatus of the Living Fossil, Cyanophora paradoxa

Muroplasts, the peculiar plastids of glaucocystophyte algae did retain—with some modifications—the peptidoglycan wall of their cyanobacterial ancestor, not only a convincing proof of the endosymbiotic theory, but earns glaucocrystophytes the status of living fossils, as peptideoglycan is found nowhere else among eukaryotes.

The Mitochondrial Genomes of the Glaucophytes Gloeochaete wittrockiana and Cyanoptyche gloeocystis: Multilocus Phylogenetics Suggests a Monophyletic Archaeplastida

Phylogenetic analyses of 14 mitochondrial genes from representative taxa from the major eukaryotic supergroups, here including novel sequences from the glaucophytes cyanophora tetracyanea and Cyanophora biloba recover a clade uniting the three Archaeplastida lineages, demonstrating the importance of greater taxon sampling within the glucophytes.

Molecular evidence for the origin of plastids from a cyanobacterium-like ancestor

Using a distance matrix method, the phylogenetic relationships among representatives of these lineages have been inferred and the results indicate a common origin of plastids from a cyanobacterium-like ancestor.

Chloroplast phylogenomic analyses reveal the deepest-branching lineage of the Chlorophyta, Palmophyllophyceae class. nov.

The small, compact and intronless chloroplast genome of V. peltata shows striking similarities in gene content and organization with the cpDNAs of Prasinococcales and the streptophyte Mesostigma viride, indicating that cpDNA architecture has been extremely well conserved in these deep-branching lineages of green plants.

The origin of red algae: implications for plastid evolution.

  • J. StillerB. Hall
  • Biology
    Proceedings of the National Academy of Sciences of the United States of America
  • 1997
Phylogenetic analyses provide strong statistical support for an early evolutionary emergence of the Rhodophyta that preceded the origin of the line that led to plants, animals, and fungi, and argue for a reexamination of current models of plastid evolution.

Signal conflicts in the phylogeny of the primary photosynthetic eukaryotes.

A phylogenomic analysis of a large data set of 124 proteins transferred from the chloroplast to the nuclear genome of the three Archaeplastida lineages found strong support for the basal emergence of the Chloroplastida and the sister-group relationship of Glaucophyta and Rhodophyta.