Green Evolution and Dynamic Adaptations Revealed by Genomes of the Marine Picoeukaryotes Micromonas

@article{Worden2009GreenEA,
  title={Green Evolution and Dynamic Adaptations Revealed by Genomes of the Marine Picoeukaryotes Micromonas},
  author={Alexandra Z. Worden and J.-H. Lee and Thomas Mock and Pierre Rouz{\'e} and Melinda Perle Simmons and Andrea Aerts and Andrew Ellis Allen and Marie L. Cuvelier and {\'E}velyne Derelle and Meredith V. Everett and Elodie Foulon and Jane Grimwood and Heidrun Gundlach and Bernard Henrissat and Carolyn Napoli and Sarah M. McDonald and Micaela S Parker and Stephane Rombauts and Asaf A. Salamov and Peter von Dassow and Jonathan H. Badger and P. M. Coutinho and Elif Demir and Inna Dubchak and Chelle Leigh Gentemann and Wenche Eikrem and Jill E. Gready and Uwe John and William P. Lanier and Erica Lindquist and Susan M. Lucas and Klaus F. X. Mayer and Herv{\'e} Moreau and Fabrice Not and Robert Otillar and Olivier Panaud and Jasmyn L. Pangilinan and Ian T. Paulsen and Beno{\^i}t Pi{\'e}gu and Alexandre Poliakov and Steven Robbens and Jeremy Schmutz and Eve Toulza and Tania Wyss and Alex N. Zelensky and Kemin Zhou and E. Virginia Armbrust and Debashish Bhattacharya and Ursula W. Goodenough and Yves van de Peer and Igor V. Grigoriev},
  journal={Science},
  year={2009},
  volume={324},
  pages={268 - 272}
}
Picoeukaryotes are a taxonomically diverse group of organisms less than 2 micrometers in diameter. Photosynthetic marine picoeukaryotes in the genus Micromonas thrive in ecosystems ranging from tropical to polar and could serve as sentinel organisms for biogeochemical fluxes of modern oceans during climate change. These broadly distributed primary producers belong to an anciently diverged sister clade to land plants. Although Micromonas isolates have high 18S ribosomal RNA gene identity, we… Expand
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References

SHOWING 1-10 OF 71 REFERENCES
The tiny eukaryote Ostreococcus provides genomic insights into the paradox of plankton speciation
TLDR
It is speculated that this latter process may be involved in altering the cell-surface characteristics of each species, and selenoenzymes, novel fusion proteins, and loss of some major protein families including ones associated with chromatin are likely important adaptations for achieving a small cell size. Expand
Genome divergence in two Prochlorococcus ecotypes reflects oceanic niche differentiation
TLDR
The genomes of two Prochlorococcus strains that span the largest evolutionary distance within the Pro chlorococcus lineage are compared and reveal dynamic genomes that are constantly changing in response to myriad selection pressures. Expand
Genome analysis of the smallest free-living eukaryote Ostreococcus tauri unveils many unique features.
  • É. Derelle, C. Ferraz, +23 authors H. Moreau
  • Biology, Medicine
  • Proceedings of the National Academy of Sciences of the United States of America
  • 2006
TLDR
The complete genome sequence of an ancient member of this lineage, the unicellular green alga Ostreococcus tauri, is unveiled, making O. tauri an ideal model system for research on eukaryotic genome evolution, including chromosome specialization and green lineage ancestry. Expand
The Chlamydomonas Genome Reveals the Evolution of Key Animal and Plant Functions
TLDR
Analyses of the Chlamydomonas genome advance the understanding of the ancestral eukaryotic cell, reveal previously unknown genes associated with photosynthetic and flagellar functions, and establish links between ciliopathy and the composition and function of flagella. Expand
Picoeukaryote diversity in coastal waters of the Pacific Ocean
TLDR
The data indicates that picoplanktonic primary production at this site is likely to be dominated by prasinophytes, and most stramenopile and alveo- late sequences corresponded to previously identified phylogenetic clades from studies conducted in other oceans and for which no cultured representatives exist. Expand
Early Gene Duplication Within Chloroplastida and Its Correspondence With Relocation of Starch Metabolism to Chloroplasts
TLDR
A comparative bioinformatic analysis of six algal genome sequences revealed a complex metabolic pathway whose intricacies and function seem conserved throughout the green lineage, and it is proposed that this relocation of glucan synthesis to the plastid facilitated evolution of chlorophyll-containing light-harvesting complex antennae by playing a protective role within the chloroplast. Expand
Green algae and the origin of land plants.
TLDR
A recent multigene analysis corroborates a close relationship between Mesostigma (formerly in the Prasinophyceae) and the charophyte algae, although sequence data of the Mesost Sigma mitochondrial genome analysis places the genus as sister toCharales, and these studies also support Charales as Sister to land plants. Expand
The eukaryotic tree of life: endosymbiosis takes its TOL.
TLDR
This work states that accurate identification of gene transfers and replacements involving eukaryotic donor and recipient genomes represents a potentially formidable challenge for the phylogenomics community as more protist genomes are sequenced and concatenated data sets grow. Expand
Genome Streamlining in a Cosmopolitan Oceanic Bacterium
TLDR
P. ubique, the first cultured member of the SAR11 clade, has the smallest genome and encodes the smallest number of predicted open reading frames known for a free-living microorganism. Expand
Selection on Major Components of Angiosperm Genomes
TLDR
The manifold cellular and physiological effects of large genomes may be a function of selection on the major components that contribute to genome size, such as transposable elements and gene duplication. Expand
...
1
2
3
4
5
...