scholarly journals Photosynthetic Versatility in the Genome of Geitlerinema sp. PCC 9228 (Formerly Oscillatoria limnetica ‘Solar Lake’), a Model Anoxygenic Photosynthetic Cyanobacterium

2016 ◽  
Vol 7 ◽  
Author(s):  
Sharon L. Grim ◽  
Gregory J. Dick
Keyword(s):  
Solar Lake

scholarly journals Distribution and Diversity of Archaea Corresponding to the Limnological Cycle of a Hypersaline Stratified Lake (Solar Lake, Sinai, Egypt)

2000 ◽  
Vol 66 (8) ◽  
pp. 3269-3276 ◽  
Author(s):  
Eddie Cytryn ◽  
Dror Minz ◽  
Ronald S. Oremland ◽  
Yehuda Cohen
Keyword(s):  
Phylogenetic Analysis ◽  
Gel Electrophoresis ◽  
Denaturing Gradient Gel Electrophoresis ◽  
Archaeal Community ◽  
Seasonal Distribution ◽  
Stratified Lake ◽  
Rdna Sequences ◽  
16S Rdna Sequences ◽  
Gradient Gel Electrophoresis ◽  
Solar Lake

ABSTRACT The vertical and seasonal distribution and diversity of archaeal sequences was investigated in a hypersaline, stratified, monomictic lake, Solar Lake, Sinai, Egypt, during the limnological development of stratification and mixing. Archaeal sequences were studied via phylogenetic analysis of 16S rDNA sequences as well as denaturing gradient gel electrophoresis analysis. The 165 clones studied were grouped into four phylogenetically different clusters. Most of the clones isolated from both the aerobic epilimnion and the sulfide-rich hypolimnion were defined as cluster I, belonging to theHalobacteriaceae family. The three additional clusters were all isolated from the anaerobic hypolimnion. Cluster II is phylogenetically located between the generaMethanobacterium and Methanococcus. Clusters III and IV relate to two previously documented groups of uncultured euryarchaeota, remotely related to the genusThermoplasma. No crenarchaeota were found in the water column of the Solar Lake. The archaeal community in the Solar Lake under both stratified and mixed conditions was dominated by halobacteria in salinities higher than 10%. During stratification, additional clusters, some of which may possibly relate to uncultured halophilic methanogens, were found in the sulfide- and methane-rich hypolimnion.

Ciliates of solar lake on the red sea shore

1981 ◽  
Vol 124 (1-2) ◽  
pp. 70-95 ◽  
Author(s):  
Norbert Wilbert ◽  
David Kahan
Keyword(s):  
Red Sea ◽  
Solar Lake

scholarly journals Spirochaeta sinaica sp. nov., a halophilic spirochaete isolated from a cyanobacterial mat

2015 ◽  
Vol 65 (Pt_11) ◽  
pp. 3872-3877 ◽  
Author(s):  
Galina Dubinina ◽  
Margarita Grabovich ◽  
Nataliya Leshcheva ◽  
Sabine Gronow ◽  
Ekaterina Gavrish ◽  
...  
Keyword(s):  
Gene Sequence ◽  
Novel Species ◽  
Rrna Gene ◽  
Cyanobacterial Mat ◽  
Glucose Fermentation ◽  
Free Living ◽  
Nitrogenous Compounds ◽  
Gene Sequence Analysis ◽  
Solar Lake

A strain of free-living obligately anaerobic, halophilic spirochaete, SLT, was isolated from a sample of a cyanobacterial mat of the hypersaline Solar Lake, Sinai shore. The strain had motile helical cells, 0.35–0.40 × 6–10 μm. Strain SLT exhibited high resistance to NaCl among known halophilic spirochaetes growing at NaCl concentrations from 2 to 12 % (optimum growth at 7 %). The strain grew at temperatures from 10 to 32 °C (optimum at 28 °C) and pH from 6 to 8.5 (optimum at pH 7.0–7.5). Carbohydrates, but not alcohols, organic acids or nitrogenous compounds (peptone, yeast extract and amino acids), were used as energy substrates for growth. Ethanol, acetate, lactate, H2 and CO2 were the products of glucose fermentation. Sulfide was produced in the presence of S0 or thiosulfate in the medium. The DNA G+C content was 44.7 mol%. Based on 16S rRNA gene sequence analysis, strain SLT clustered within the genus Spirochaeta, exhibiting 94.2 and 93.7 % similarity with its closest relatives, Spirochaeta bajacaliforniensis DSM 160554T and Spirochaeta smaragdinae DSM 11293T, respectively; similarity with other species did not exceed 86 %. The phenotypic and chemotaxonomic characteristics of the strain, as well as the results of phylogenetic analysis support the classification of strain SLT as representing a novel species of the genus Spirochaeta, for which the name Spirochaeta sinaica sp. nov. is proposed. The type strain is SLT ( = DSM 14994 = UNIQEM U 783).

A sulfate-reducing bacterium from the oxic layer of a microbial mat from Solar Lake (Sinai), Desulfovibrio oxyclinae sp. nov.

1997 ◽  
Vol 167 (6) ◽  
pp. 369-375 ◽  
Author(s):  
Daniel Krekeler ◽  
Pavel Sigalevich ◽  
A. Teske ◽  
H. Cypionka ◽  
Yehuda Cohen
Keyword(s):  
Microbial Mat ◽  
Sulfate Reducing ◽  
Solar Lake

Immunological studies on microbial mats from Solar Lake (Sinai)— A contribution to the organic geochemistry of sediments

1986 ◽  
Vol 10 (4-6) ◽  
pp. 697-704 ◽  
Author(s):  
G. Muyzer ◽  
S. De Koster ◽  
Y. Van Zijl ◽  
J.J. Boon ◽  
P. Westbroek
Keyword(s):  
Microbial Mats ◽  
Organic Geochemistry ◽  
Solar Lake

Excretion products of algae and their occurrence in Solar Lake. Taba, Egypt

1999 ◽  
Vol 9 (3) ◽  
pp. 233-243 ◽  
Author(s):  
M.I. Badawy ◽  
H.F. Abou-Waly ◽  
G.H. Ali
Keyword(s):  
Solar Lake
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