Genome of the halotolerant green alga Picochlorum sp. reveals strategies for thriving under fluctuating environmental conditions.

@article{Foflonker2015GenomeOT,
  title={Genome of the halotolerant green alga Picochlorum sp. reveals strategies for thriving under fluctuating environmental conditions.},
  author={Fatima Foflonker and Dana C Price and Huan Qiu and Brian Palenik and Shuyi Wang and Debashish Bhattacharya},
  journal={Environmental microbiology},
  year={2015},
  volume={17 2},
  pages={
          412-26
        }
}
An expected outcome of climate change is intensification of the global water cycle, which magnifies surface water fluxes, and consequently alters salinity patterns. It is therefore important to understand the adaptations and limits of microalgae to survive changing salinities. To this end, we sequenced the 13.5 Mbp genome of the halotolerant green alga Picochlorum SENEW3 (SE3) that was isolated from a brackish water pond subject to large seasonal salinity fluctuations. Picochlorum SE3 encodes… Expand
The unexpected extremophile: Tolerance to fluctuating salinity in the green alga Picochlorum
TLDR
This work elucidates how evolutionary forces play out in a streamlined genome of Picochlorum SENEW3, a broadly halotolerant green alga isolated from a shallow, mesophilic brackish-water lagoon that experiences extreme changes in temperature, light, and in particular, salinity, to deal with a fluctuating environment. Expand
Genomic Analysis of Picochlorum Species Reveals How Microalgae May Adapt to Variable Environments
TLDR
It is shown that gene gain and loss also play key roles in adaptation to salinity stress, and how microbial eukaryotes with limited gene inventories expand habitat range from mesophilic to halophilic through allelic diversity, and with minor but important contributions made by HGT is elucidated. Expand
Genome Analyses of the Microalga Picochlorum Provide Insights into the Evolution of Thermotolerance in the Green Lineage
TLDR
There is a striking overlap between the thermotolerance and halotolerance transcriptional rewiring, as more than one-third of the gene families up-regulated at 35 °C were also up- regulated under variable salt concentrations in Picochlorum SE3. Expand
Adaptation to Extreme Antarctic Environments Revealed by the Genome of a Sea Ice Green Alga
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It is found that retrotransposon proliferation contributed to the relatively large genome size of ICE-L when compared to other chlorophytes, likely reflecting adaptive changes among diverse metabolic processes. Expand
Demonstration of the potential of Picochlorum soloecismus as a microalgal platform for the production of renewable fuels
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This work shows that Picochlorum soloecismus is a candidate production strain for the generation of renewable bioproducts and makes use of its sequenced genome to compare it to other biofuel production platforms and to validate the capacity for engineering this strain's genome. Expand
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The sequenced genome of Ulva mutabilis, a ubiquitous and iconic representative of the Ulvophyceae or green seaweeds, offers new opportunities to understand coastal and marine ecosystems and the fundamental evolution of the green lineage. Expand
Development of a high-productivity, halophilic, thermotolerant microalga Picochlorum renovo
TLDR
These findings will enable basic science inquiries into control mechanisms governing Picochlorum biology and lay the foundation for development of a microalga with industrially relevant traits as a model photobiology platform. Expand
Development of the high-productivity marine microalga, Picochlorum renovo, as a photosynthetic protein secretion platform
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A novel photosynthetic protein production platform is established via computational prediction and genetic engineering using native microalgal protein secretory signal peptides to achieve functional secretion of the fluorescent protein mCherry in the recently characterized alga Picochlorum renovo. Expand
Sequencing and comparative analysis of three Chlorella genomes provide insights into strain-specific adaptation to wastewater
TLDR
Three newly sequenced Chlorella genomes provide a fundamental foundation to understand the molecular basis of abiotic stress tolerance in wastewater treatment, which is essential for future genetic engineering and strain improvement. Expand
Sequencing and comparative analysis of three Chlorella genomes provide insights into strain-specific adaptation to wastewater
TLDR
Three newly sequenced Chlorella genomes provide a fundamental foundation to understand the molecular basis of abiotic stress tolerance in wastewater treatment, which is essential for future genetic engineering and strain improvement. Expand
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