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The Ectocarpus genome and the independent evolution of multicellularity in brown algae
The Ectocarpus genome sequence represents an important step towards developing this organism as a model species, providing the possibility to combine genomic and genetic approaches to explore these and other aspects of brown algal biology further.
The genome of the seagrass Zostera marina reveals angiosperm adaptation to the sea
The genome of Zostera marina, the first, to the authors' knowledge, marine angiosperm to be fully sequenced, reveals unique insights into the genomic losses and gains involved in achieving the structural and physiological adaptations required for its marine lifestyle.
Genome structure and metabolic features in the red seaweed Chondrus crispus shed light on evolution of the Archaeplastida
- J. Collén, Betina M. Porcel, C. Boyen
- BiologyProceedings of the National Academy of Sciences
- 15 March 2013
An evolutionary scenario involving an ancestral red alga that was driven by early ecological forces to lose genes, introns, and intergenetic DNA is proposed; this loss was followed by an expansion of genome size as a consequence of activity of transposable elements.
Global expression analysis of the brown alga Ectocarpus siliculosus (Phaeophyceae) reveals large-scale reprogramming of the transcriptome in response to abiotic stress
This first large-scale transcriptomic study of a brown alga demonstrates that, unlike terrestrial plants, E. siliculosus undergoes extensive reprogramming of its transcriptome during the acclimation to mild abiotic stress.
A Haploid System of Sex Determination in the Brown Alga Ectocarpus sp.
Chlorophyll-binding proteins revisited - a multigenic family of light-harvesting and stress proteins from a brown algal perspective
The findings reinforce the idea that the LI818 family of CBPs has a role in stress response, and show an origin in an ancestral chlorophyll a/c-containing organism and a subsequent lateral transfer to some green algae, although an origin of LI8 18 proteins in a common ancestor of red and green algae cannot be ruled out.
Transcriptomic and metabolomic analysis of copper stress acclimation in Ectocarpus siliculosus highlights signaling and tolerance mechanisms in brown algae
Comparisons with data from green plants indicate that some processes involved in Cu and oxidative stress response are conserved across these two distant lineages, and underlines the potential to discover new components and molecular interactions unique to these organisms.
Meneco, a Topology-Based Gap-Filling Tool Applicable to Degraded Genome-Wide Metabolic Networks
Increasing amounts of sequence data are becoming available for a wide range of non-model organisms. Investigating and modelling the metabolic behaviour of those organisms is highly relevant to…
GPR-Analyzer: a simple tool for quantitative analysis of hierarchical multispecies microarrays
Monitoring of marine microalgae is important to predict and manage harmful algae blooms. It currently relies mainly on light-microscopic identification and enumeration of algal cells, yet several…
Insights into the red algae and eukaryotic evolution from the genome of Porphyra umbilicalis (Bangiophyceae, Rhodophyta)
- S. Brawley, N. Blouin, S. Prochnik
- Biology, Environmental ScienceProceedings of the National Academy of Sciences
- 17 July 2017
The analyses of the Porphyra umbilicalis genome provide insights into how this macrophyte thrives in the stressful intertidal zone and into the basis for its nutritional value as human food and elucidate traits that inform the understanding of the biology of red algae as one of the few multicellular eukaryotic lineages.