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PCR primers to amplify 16S rRNA genes from cyanobacteria
TLDR
The use of this specific PCR in combination with denaturing gradient gel electrophoresis to probe the diversity of oxygenic phototrophic microorganisms in cultures, lichens, and complex microbial communities is demonstrated. Expand
CHARACTERIZATION AND BIOLOGICAL IMPLICATIONS OF SCYTONEMIN, A CYANOBACTERIAL SHEATH PIGMENT 1
TLDR
Results strongly suggest that scytonemin production constitutes an adaptive strategy of photoprotection against short‐wavelength solar irradiance. Expand
Phylogenetic and Morphological Diversity of Cyanobacteria in Soil Desert Crusts from the Colorado Plateau
TLDR
The diversity found in desert crusts was underrepresented in currently available nucleotide sequence databases, and several novel phylogenetic clusters could be identified, indicating that soil characteristics may select for specific cyanobacteria. Expand
EVIDENCE FOR AN ULTRAVIOLET SUNSCREEN ROLE OF THE EXTRACELLULAR PIGMENT SCYTONEMIN IN THE TERRESTRIAL CYANOBACTERIUM Chiorogloeopsis sp.
TLDR
Observations provide strong evidence for the proposed protective role of scytonemin, as a passive UV‐A sunscreen, in cyanobacteria. Expand
A model for internal self‐shading in planktonic organisms and its implications for the usefulness of ultraviolet sunscreens
TLDR
A bio-optical model is applied to the examination of case studies of sunscreen-bearing microorganisms and the prediction of the effects of organismal size on both the inherent sensitivity to ultraviolet radiation and the possible amelioration of this condition by means of sunscreen accumulation. Expand
The phylogeny of unicellular, extremely halotolerant cyanobacteria
TLDR
This represents the first case in which a phylogenetically coherent group of cyanobacteria can be defined on the basis of physiology, and the Halothece cluster contained two subclusters that may be divergent at the generic level. Expand
MICROENVIRONMENTS AND MICROSCALE PRODUCTIVITY OF CYANOBACTERIAL DESERT CRUSTS 1
TLDR
Differences in metabolic parameters and community structure between two types of crusts were consistent with a successional pattern, which could be partially explained on the basis of the microenvironments. Expand
Microbial ultraviolet sunscreens
TLDR
The current understanding of microbial 'sunscreen' compounds, including scytonemin, the mycosporines and the naphthalene-based melanins are described, which have led to the discovery of new classes of compounds, new metabolic pathways, a deeperUnderstanding of microbial photobiology and the potential for dermatological or biomedical applications. Expand
The prokaryotic diversity of biological soil crusts in the Sonoran Desert (Organ Pipe Cactus National Monument, AZ).
TLDR
Sonoran BSC communities were distinct in rough compositional character from those in bulk arid soils or agricultural soils, and contained reoccurring, uncultured microbes. Expand
The structure of scytonemin, an ultraviolet sunscreen pigment from the sheaths of cyanobacteria
TLDR
The pigment scytonemin, the first shown to be an effective, photo-stable ultraviolet shield in prokaryotes, is a novel dimeric molecule of indolic and phenolic subunits and is known only from the sheaths enclosing the cells of cyanobacteria. Expand
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