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On the rocks: the microbiology of Antarctic Dry Valley soils
TLDR
This work reviews the understanding of these extreme Antarctic terrestrial microbial communities, with particular emphasis on the factors that are involved in their development, distribution and maintenance in these cold desert environments.
Enzymatic and Genetic Characterization of Carbon and Energy Metabolisms by Deep-Sea Hydrothermal Chemolithoautotrophic Isolates of Epsilonproteobacteria
TLDR
The enzymatic and genetic characteristics described here were consistent with cellular carbon and energy metabolisms and suggest that molecular tools may have great potential for in situ elucidation of the ecophysiological roles of deep-sea Epsilonproteobacteria.
A communal catalogue reveals Earth’s multiscale microbial diversity
TLDR
A meta-analysis of microbial community samples collected by hundreds of researchers for the Earth Microbiome Project is presented, creating both a reference database giving global context to DNA sequence data and a framework for incorporating data from future studies, fostering increasingly complete characterization of Earth’s microbial diversity.
Improved quantitative real‐time PCR assays for enumeration of harmful algal species in field samples using an exogenous DNA reference standard
TLDR
This investigation demonstrates that the comparative Ct method with an exogenous DNA reference standard provides both accurate and reproducible quantification of HAB species in environmental samples.
The Inter-Valley Soil Comparative Survey: the ecology of Dry Valley edaphic microbial communities
TLDR
The results indicate that the microbial ecology of Dry Valley soils is highly localized and that physicochemical factors potentially have major roles in shaping the microbiology of ice-free areas of Antarctica, and raise previously unrecognized issues related to environmental management of this unique ecosystem.
Microbial community composition in soils of Northern Victoria Land, Antarctica.
TLDR
This work investigates soil microbial communities from low- and high-productivity habitats in an isolated Antarctic location to determine how the soil environment impacts microbial community composition and structure and adds to the recent literature suggesting that there is a higher biodiversity within Antarctic soils than previously expected.
Switching toxin production on and off: intermittent microcystin synthesis in a Microcystis bloom.
TLDR
Using a RT-QPCR assay that allowed the precise measurement of mcyE transcriptional gene expression and an ELISA that enabled small changes in total microcystin concentrations to be monitored, it is demonstrated for the first time that micro Cystin production is not always constitutive and that significant up- and downregulation in microcyStin synthesis can occur on time scales of 2-6 h.
Co-variation in soil biodiversity and biogeochemistry in northern and southern Victoria Land, Antarctica
TLDR
Variation in soil metazoan communities was related to differences in soil organic matter, while bacterial diversity and community structure were not strongly correlated with any single soil property, suggesting that controls over distribution and habitat suitability are different for bacterial and metazoa communities.
Ancient origins determine global biogeography of hot and cold desert cyanobacteria
TLDR
Temporally scaled phylogenetic analyses showed no evidence of recent inter-regional gene flow, indicating populations have not shared common ancestry since before the formation of modern continents, and indicates that global distribution of desert cyanobacteria has not resulted from widespread contemporary dispersal but is an ancient evolutionary legacy.
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