74 results match your criteria Saline Systems [Journal]


Artisanal salt production in Aveiro/Portugal - an ecofriendly process.

Saline Systems 2011 Nov 4;7(1). Epub 2011 Nov 4.

CIMAR/CIIMAR - Centre of Marine and Environmental Research, University of Porto, Portugal, Rua dos Bragas, 289, 4050-123 Porto, Portugal.

Solar salinas are man-made systems exploited for the extraction of salt, by solar and wind evaporation of seawater. Salt production achieved by traditional methods is associated with landscapes and environmental and patrimonial values generated throughout history. Since the mid-twentieth century, this activity has been facing a marked decline in Portugal, with most salinas either abandoned or subjected to destruction, making it necessary to find a strategy to reverse this trend. Read More

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http://dx.doi.org/10.1186/1746-1448-7-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3225316PMC
November 2011
2 Reads

The fate of minor alkali elements in the chemical evolution of salt lakes.

Saline Systems 2011 Oct 12;7. Epub 2011 Oct 12.

School of Earth Sciences, The Ohio State University, Columbus, Ohio, USA.

Alkaline earth elements and alkali metals (Mg, Ca, Na and K) play an important role in the geochemical evolution of saline lakes as the final brine type is defined by the abundance of these elements. The role of major ions in brine evolution has been studied in great detail, but little has been done to investigate the behaviour of minor alkali elements in these systems despite their similar chemical affinities to the major cations. We have examined three major anionic brine types, chloride, sulphate, and bicarbonate-carbonate, in fifteen lakes in North America and Antarctica to determine the geochemical behaviour of lithium, rubidium, strontium, and barium. Read More

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http://dx.doi.org/10.1186/1746-1448-7-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3213058PMC
October 2011
3 Reads

Protein attributes contribute to halo-stability, bioinformatics approach.

Saline Systems 2011 May 18;7(1). Epub 2011 May 18.

Bioinformatics Research Group, Green Research Center, Qom University, Qom, Iran.

Halophile proteins can tolerate high salt concentrations. Understanding halophilicity features is the first step toward engineering halostable crops. To this end, we examined protein features contributing to the halo-toleration of halophilic organisms. Read More

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http://dx.doi.org/10.1186/1746-1448-7-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3117752PMC
May 2011
12 Reads

HaloWeb: the haloarchaeal genomes database.

Saline Systems 2010 Dec 30;6:12. Epub 2010 Dec 30.

Department of Microbiology & Immunology, University of Maryland School of Medicine, Baltimore, MD, USA.

Background: Complete genome sequencing together with post-genomic studies provide the opportunity for a comprehensive 'systems biology' understanding of model organisms. For maximum effectiveness, an integrated database containing genomic, transcriptomic, and proteomic data is necessary.

Description: To improve data access and facilitate functional genomic studies on haloarchaea in our laboratory, a dedicated database and website, named HaloWeb, was developed. Read More

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http://dx.doi.org/10.1186/1746-1448-6-12DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3023673PMC
December 2010
3 Reads

Fairy, tadpole, and clam shrimps (Branchiopoda) in seasonally inundated clay pans in the western Mojave Desert and effect on primary producers.

Saline Systems 2010 Dec 8;6:11. Epub 2010 Dec 8.

Texas A&M University Corpus Christi, 6300 Ocean Drive, Corpus Christi, TX 78412, USA.

Background: Fairy shrimps (Anostraca), tadpole shrimps (Notostraca), clam shrimps (Spinicaudata), algae (primarily filamentous blue-green algae [cyanobacteria]), and suspended organic particulates are dominant food web components of the seasonally inundated pans and playas of the western Mojave Desert in California. We examined the extent to which these branchiopods controlled algal abundance and species composition in clay pans between Rosamond and Rogers Dry Lakes. We surveyed branchiopods during the wet season to estimate abundances and then conducted a laboratory microcosm experiment, in which dried sediment containing cysts and the overlying algal crust were inundated and cultured. Read More

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http://dx.doi.org/10.1186/1746-1448-6-11DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3019125PMC
December 2010
2 Reads

Biodiversity of Archaea and floral of two inland saltern ecosystems in the Alto Vinalopó Valley, Spain.

Saline Systems 2010 Oct 13;6:10. Epub 2010 Oct 13.

División de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Alicante, Ap, 99, E-03080 Alicante, Spain.

Background: The extraction of salt from seawater by means of coastal solar salterns is a very well-described process. Moreover, the characterization of these environments from ecological, biochemical and microbiological perspectives has become a key focus for many research groups all over the world over the last 20 years. In countries such as Spain, there are several examples of coastal solar salterns (mainly on the Mediterranean coast) and inland solar salterns, from which sodium chloride is obtained for human consumption. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-6-10DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2984398PMC
October 2010
4 Reads

Comparison of four phaC genes from Haloferax mediterranei and their function in different PHBV copolymer biosyntheses in Haloarcula hispanica.

Saline Systems 2010 Aug 20;6. Epub 2010 Aug 20.

State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, No,1 West Beichen Road, Chaoyang District, Beijing 100101, China.

Background: The halophilic archaeon Haloferax mediterranei is able to accumulate large amounts of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) with high molar fraction of 3-hydroxyvalerate (3HV) from unrelated carbon sources. A Polyhydroxyalkanoate (PHA) synthase composed of two subunits, PhaCHme and PhaEHme, has been identified in this strain, and shown to account for the PHBV biosynthesis.

Results: With the aid of the genome sequence of Hfx. Read More

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http://dx.doi.org/10.1186/1746-1448-6-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2939530PMC
August 2010
16 Reads

Dynamics of Sundarban estuarine ecosystem: eutrophication induced threat to mangroves.

Saline Systems 2010 Aug 11;6. Epub 2010 Aug 11.

Department of Biochemistry, University of Calcutta, 35, B.C. Road, kolkata-700019, India.

Background: Sundarbans is the largest chunk of mangrove forest and only tiger mangrove land in the world. Compared to the rich species diversity and uniqueness, very few studies have so far been conducted here, mainly due to its inaccessibility. This study explores water quality, density of biomass, species diversity, phytoplankton abundance and bacterial population of a tidal creek in Sunderban estuary during the post and pre monsoon period of 2008-09. Read More

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http://dx.doi.org/10.1186/1746-1448-6-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2928246PMC
August 2010
4 Reads

Translation of Henrich Klebahn's 'Damaging agents of the klippfish - a contribution to the knowledge of the salt-loving organisms'.

Saline Systems 2010 Jun 22;6. Epub 2010 Jun 22.

Department of Microbiology and Immunology, University of Maryland School of Medicine, 701 East Pratt Street, Baltimore, Maryland, USA.

Background: Henrich Klebahn was a German linguist, mycologist and phytopathologist, who was known as Dr. Dr. h. Read More

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http://dx.doi.org/10.1186/1746-1448-6-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2912921PMC
June 2010
4 Reads

Characterization of manganese superoxide dismutase from a marine cyanobacterium Leptolyngbya valderiana BDU20041.

Saline Systems 2010 Jun 3;6. Epub 2010 Jun 3.

National Facility for Marine Cyanobacteria (Sponsored by Dept. of Biotechnology, Govt. of India), Department of Marine Biotechnology, School of Marine Sciences, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India.

Background: Cyanobacteria are recognized as the primordial organisms to grace the earth with molecular oxygen ~3.5 billion years ago as a result of their oxygenic photosynthesis. This laid a selection pressure for the evolution of antioxidative defense mechanisms to alleviate the toxic effect of active oxygen species (AOS) in cyanobacteria. Read More

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http://dx.doi.org/10.1186/1746-1448-6-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2893185PMC
June 2010
8 Reads

Prokaryotic aminopeptidase activity along a continuous salinity gradient in a hypersaline coastal lagoon (the Coorong, South Australia).

Saline Systems 2010 Apr 30;6. Epub 2010 Apr 30.

School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia.

The distribution and aminopeptidase activity of prokaryotes were investigated along a natural continuous salinity gradient in a hypersaline coastal lagoon, the Coorong, South Australia. The abundance of prokaryotes significantly increased from brackish to hypersaline waters and different sub-populations, defined by flow cytometry, were observed along the salinity gradient. While four sub-populations were found at each station, three additional ones were observed for 8. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-6-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2882902PMC
April 2010
5 Reads

Introduction of a novel 18S rDNA gene arrangement along with distinct ITS region in the saline water microalga Dunaliella.

Saline Systems 2010 Apr 8;6. Epub 2010 Apr 8.

Pharmacy faculty, Tabriz University, Tabriz, I. R. Iran.

Comparison of 18S rDNA gene sequences is a very promising method for identification and classification of living organisms. Molecular identification and discrimination of different Dunaliella species were carried out based on the size of 18S rDNA gene and, number and position of introns in the gene. Three types of 18S rDNA structure have already been reported: the gene with a size of ~1770 bp lacking any intron, with a size of ~2170 bp consisting one intron near 5' terminus, and with a size of ~2570 bp harbouring two introns near 5' and 3' termini. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-6-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2867797PMC
April 2010
5 Reads

bbThermodynamic quantities and Urmia Sea water evaporation.

Saline Systems 2010 Mar 31;6. Epub 2010 Mar 31.

Department of Chemistry, Faculty of Sciences, Urmia University, Urmia 57159-165, Iran.

The relation between climatic parameters (relative air humidity) and the water activity of the Urmia Sea water determines the possible maximum evaporation of the lake. Using the Pitzer thermodynamic approach, the activity of the Urmia Lake water during evaporation was calculated and compared to the present relative air humidity above the water. Present climatic conditions allow the Urmia Sea water to evaporate down to water with activity of 0. Read More

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http://dx.doi.org/10.1186/1746-1448-6-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2873240PMC
March 2010
2 Reads

Distribution of picophytoplankton communities from brackish to hypersaline waters in a South Australian coastal lagoon.

Saline Systems 2010 Feb 24;6. Epub 2010 Feb 24.

School of Biological Sciences, Flinders University, GPO Box 2100, Adelaide SA 5001, Australia.

Background: Picophytoplankton (i.e. cyanobacteria and pico-eukaryotes) are abundant and ecologically critical components of the autotrophic communities in the pelagic realm. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-6-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2847571PMC
February 2010
6 Reads

Culture independent molecular analysis of bacterial communities in the mangrove sediment of Sundarban, India.

Saline Systems 2010 Feb 17;6(1). Epub 2010 Feb 17.

Department of Biochemistry and Department of Biotechnology, University of Calcutta, 35, Ballygunge Circular Road, Kolkata- 700019, West Bengal, India.

Background: Sundarban is the world's largest coastal sediment comprising of mangrove forest which covers about one million hectares in the south-eastern parts of India and southern parts of Bangladesh. The microbial diversity in this sediment is largely unknown till date. In the present study an attempt has been made to understand the microbial diversity in this sediment using a cultivation-independent molecular approach. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-6-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2837041PMC
February 2010
5 Reads

Biodiversity of poly-extremophilic Bacteria: does combining the extremes of high salt, alkaline pH and elevated temperature approach a physico-chemical boundary for life?

Saline Systems 2009 Nov 23;5. Epub 2009 Nov 23.

Department of Microbiology, University of Georgia, Athens, GA, USA.

Bacterial microorganisms that grow optimally at Na+ concentrations of 1.7 M, or the equivalent of 10% (w/v) NaCl, and greater are considered to be extreme halophiles. This review focuses on the correlation between the extent of alkaline pH and elevated temperature optima and the extent of salt tolerance of extremely halophilic eubacteria; the focus is on those with alkaline pH optima, above 8. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-5-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2785825PMC
November 2009
12 Reads

A systems biology approach to investigate the response of Synechocystis sp. PCC6803 to a high salt environment.

Saline Systems 2009 Sep 7;5. Epub 2009 Sep 7.

ChELSI Institute, Department of Chemical and Process Engineering, The University of Sheffield, Sheffield, UK.

Background: Salt overloading during agricultural processes is causing a decrease in crop productivity due to saline sensitivity. Salt tolerant cyanobacteria share many cellular characteristics with higher plants and therefore make ideal model systems for studying salinity stress. Here, the response of fully adapted Synechocystis sp. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-5-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2743698PMC
September 2009
4 Reads

Molt-inhibiting hormone stimulates vitellogenesis at advanced ovarian developmental stages in the female blue crab, Callinectes sapidus 1: an ovarian stage dependent involvement.

Saline Systems 2009 Jul 7;5. Epub 2009 Jul 7.

Center of Marine Biotechnology, University of Maryland Biotechnology Institute, Baltimore, MD 21202, USA.

To understand the hormonal coordination of the antagonism between molting and reproduction in crustaceans, the terminally anecdysial mature female Callinectes sapidus was used as a model. The regulatory roles of crustacean hyperglycemic hormone (CHH) and molt-inhibiting hormone (MIH) in vitellogenesis were examined. A competitive specific RIA was used to measure the levels of MIH and CHH in the hemolymphs of mature females at pre- and mid- vitellogenic stages, and their effects on vitellogenesis at early (early 2, E2) and mid vitellogenesis (3) stages were determined in vitro. Read More

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http://dx.doi.org/10.1186/1746-1448-5-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2715418PMC
July 2009
3 Reads

Molt-inhibiting hormone stimulates vitellogenesis at advanced ovarian developmental stages in the female blue crab, Callinectes sapidus 2: novel specific binding sites in hepatopancreas and cAMP as a second messenger.

Saline Systems 2009 Jul 7;5. Epub 2009 Jul 7.

Center of Marine Biotechnology, University of Maryland Biotechnology Institute, Baltimore, MD 21202, USA.

The finding that molt-inhibiting hormone (MIH) regulates vitellogenesis in the hepatopancreas of mature Callinectes sapidus females, raised the need for the characterization of its mode of action. Using classical radioligand binding assays, we located specific, saturable, and non-cooperative binding sites for MIH in the Y-organs of juveniles (J-YO) and in the hepatopancreas of vitellogenic adult females. MIH binding to the hepatopancreas membranes had an affinity 77 times lower than that of juvenile YO membranes (KD values: 3. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-5-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2714851PMC
July 2009
5 Reads

DNA fingerprinting differentiation between beta-carotene hyperproducer strains of Dunaliella from around the world.

Saline Systems 2009 Jun 30;5. Epub 2009 Jun 30.

Molecular Microbiology Laboratory, Centro de Investigación Científica y de Educación Superior de Ensenada (CICESE), Department of Marine Biotechnology, Ensenada, B.C, México.

Background: Dunaliella salina is the most important species of the genus for beta-carotene production. Several investigations have demonstrated that D. salina produces more than 10% dry weight of pigment and that the species grows in salt saturated lagoons. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-5-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2710335PMC
June 2009
9 Reads

Molecular characterization and the effect of salinity on cyanobacterial diversity in the rice fields of Eastern Uttar Pradesh, India.

Saline Systems 2009 Apr 6;5. Epub 2009 Apr 6.

Department of Botany, School of Life Sciences, Mizoram University, Tanhril Campus, Aizawl-796009, India.

Background: Salinity is known to affect almost half of the world's irrigated lands, especially rice fields. Furthermore, cyanobacteria, one of the critical inhabitants of rice fields have been characterized at molecular level from many different geographical locations. This study, for the first time, has examined the molecular diversity of cyanobacteria inhabiting Indian rice fields which experience various levels of salinity. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-5-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2680867PMC
April 2009
5 Reads

Egg banks in hypersaline lakes of the South-East Europe.

Saline Systems 2009 Mar 17;5. Epub 2009 Mar 17.

Department of Biological and Environmental Sciences and Technologies, University of Salento, Lecce, Italy.

The cyst banks of 6 coastal hypersaline lakes of South-East Europe have been investigated. The study concerned the bottom sediments of Khersonesskoe and Koyashskoe lakes in the Crimea (Ukraine), Nartë saltworks (Albania), Vecchia Salina at Torre Colimena (Apulia, Italy), Pantano Grande and Pantano Roveto at Vendicari (Sicily, Italy). A total of 19 cyst types were recognised. Read More

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http://dx.doi.org/10.1186/1746-1448-5-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2662865PMC
March 2009
3 Reads

Long-term surveillance of sulfate-reducing bacteria in highly saline industrial wastewater evaporation ponds.

Saline Systems 2009 Feb 18;5. Epub 2009 Feb 18.

Department of Biotechnology Engineering, Ben-Gurion University of the Negev, Be'er-Sheva, Israel.

Abundance and seasonal dynamics of sulfate-reducing bacteria (SRB), in general, and of extreme halophilic SRB (belonging to Desulfocella halophila) in particular, were examined in highly saline industrial wastewater evaporation ponds over a forty one month period. Industrial wastewater was sampled and the presence of SRB was determined by quantitative real-time PCR (qPCR) with a set of primers designed to amplify the dissimilatory sulfite reductase (dsrA) gene. SRB displayed higher abundance during the summer (10(6)-10(8) targets ml(-1)) and lower abundance from the autumn-spring (10(3)-10(5) targets ml(-1)). Read More

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http://dx.doi.org/10.1186/1746-1448-5-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2652471PMC
February 2009
10 Reads

Patterns of seasonal phytoplankton distribution in prairie saline lakes of the northern Great Plains (U.S.A.).

Saline Systems 2009 Jan 5;5. Epub 2009 Jan 5.

Department of Biology & River Studies Center, University of Wisconsin-La Crosse, La Crosse, Wisconsin 54601, USA.

Seasonal changes in freshwater phytoplankton communities have been extensively studied, but key drivers of phytoplankton in saline lakes are currently not well understood. Comparative lake studies of 19 prairie saline lakes in the northern Great Plains (USA) were conducted in spring and summer of 2004, with data gathered for a suite of limnological parameters. Nutrient enrichment assays for natural phytoplankton assemblages were also performed in spring and summer of 2006. Read More

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http://dx.doi.org/10.1186/1746-1448-5-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2631472PMC
January 2009
5 Reads

A trehalose 6-phosphate synthase gene of the hemocytes of the blue crab, Callinectes sapidus: cloning, the expression, its enzyme activity and relationship to hemolymph trehalose levels.

Authors:
J Sook Chung

Saline Systems 2008 Dec 12;4:18. Epub 2008 Dec 12.

Center of Marine Biotechnology, University of Maryland Biotechnology Institute, Baltimore, MD 21202, USA.

Trehalose in ectoderms functions in energy metabolism and protection in extreme environmental conditions. We structurally characterized trehalose 6-phosphate synthase (TPS) from hemocytes of the blue crab, Callinectes sapidus. C. Read More

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http://dx.doi.org/10.1186/1746-1448-4-18DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2615023PMC
December 2008
2 Reads

Morphological study of Cyclotella choctawhatcheeana Prasad (Stephanodiscaceae) from a saline Mexican lake.

Saline Systems 2008 Dec 8;4:17. Epub 2008 Dec 8.

Morphology and Function Research Unit FES Iztacala, National Autonnomous University of Mexico (UNAM), Tlalnepantla, Estado de Mexico, Mexico.

Background: Cyclotella choctawhatcheeana Prasad 1990 is a small centric diatom found in the plankton of water bodies with a wide range of salt concentrations. This paper describes the morphological features of the valve of C. choctawhatcheeana, from Alchichica lake, a hyposaline lake located in Central Mexico, and provides information about their ecology with respect to water chemistry and distribution in the water column along the annual cycle. Read More

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http://dx.doi.org/10.1186/1746-1448-4-17DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2615436PMC
December 2008
12 Reads

Acidophilic haloarchaeal strains are isolated from various solar salts.

Saline Systems 2008 Oct 29;4:16. Epub 2008 Oct 29.

Bio-Nano Electronics Research Center, Toyo University, Kawagoe, Saitama, Japan.

Haloarchaeal strains require high concentrations of NaCl for their growth, with optimum concentrations of 10-30%. They display a wide variety of morphology and physiology including pH range for growth. Many strains grow at neutral to slightly alkaline pH, and some only at alkaline pH. Read More

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http://dx.doi.org/10.1186/1746-1448-4-16DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2583988PMC
October 2008
3 Reads

Distribution, abundance and diversity of the extremely halophilic bacterium Salinibacter ruber.

Saline Systems 2008 Oct 28;4:15. Epub 2008 Oct 28.

División de Microbiología, Universidad de Alicante, Alicante, Spain.

Since its discovery in 1998, representatives of the extremely halophilic bacterium Salinibacter ruber have been found in many hypersaline environments across the world, including coastal and solar salterns and solar lakes. Here, we review the available information about the distribution, abundance and diversity of this member of the Bacteroidetes. Read More

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http://dx.doi.org/10.1186/1746-1448-4-15DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2596770PMC
October 2008
4 Reads

Unravelling the adaptation responses to osmotic and temperature stress in Chromohalobacter salexigens, a bacterium with broad salinity tolerance.

Saline Systems 2008 Sep 15;4:14. Epub 2008 Sep 15.

Department of Microbiology and Parasitology, Faculty of Pharmacy, University of Seville, Seville, Spain.

Chromohalobacter salexigens, a Gammaproteobacterium belonging to the family Halomonadaceae, shows a broad salinity range for growth. Osmoprotection is achieved by the accumulation of compatible solutes either by transport (betaine, choline) or synthesis (mainly ectoine and hydroxyectoine). Ectoines can play additional roles as nutrients and, in the case of hydroxyectoine, in thermotolerance. Read More

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http://dx.doi.org/10.1186/1746-1448-4-14DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2553793PMC
September 2008
4 Reads

Transcriptional responses to biologically relevant doses of UV-B radiation in the model archaeon, Halobacterium sp. NRC-1.

Saline Systems 2008 Aug 29;4:13. Epub 2008 Aug 29.

School of Life Sciences, Oxford Brookes University, Gipsy Lane, Oxford OX3 0BP, UK.

Background: Most studies of the transcriptional response to UV radiation in living cells have used UV doses that are much higher than those encountered in the natural environment, and most focus on short-wave UV (UV-C) at 254 nm, a wavelength that never reaches the Earth's surface. We have studied the transcriptional response of the sunlight-tolerant model archaeon, Halobacterium sp. NRC-1, to low doses of mid-wave UV (UV-B) to assess its response to UV radiation that is likely to be more biologically relevant. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-4-13DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2556686PMC
August 2008
6 Reads

Heterologous ectoine production in Escherichia coli: by-passing the metabolic bottle-neck.

Saline Systems 2008 Aug 29;4:12. Epub 2008 Aug 29.

Institute of Biochemistry, Westfälische Wilhelms-Universität Münster, Münster, Germany.

Transcription of the ectoine biosynthesis genes ectA, ectB and ectC from Marinococcus halophilus in recombinant Escherichia coli DH5alpha is probably initiated from three individual sigma70/sigmaA-dependent promoter sequences, upstream of each gene. Consequently, mRNA-fragments containing the single genes and combinations of the genes ectA and ectB or ectB and ectC, respectively, could be detected by Northern blot analysis. Under the control of its own regulatory promoter region (ectUp) a seemingly osmoregulated ectoine production was observed. Read More

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http://dx.doi.org/10.1186/1746-1448-4-12DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2562377PMC
August 2008
8 Reads

Effect of benthic boundary layer transport on the productivity of Mono Lake, California.

Saline Systems 2008 Aug 19;4:11. Epub 2008 Aug 19.

Centre for Water Research, University of Western Australia, Crawley, Western Australia, Australia.

The significance of the transport of nutrient-rich hypolimnetic water via the benthic boundary layer (BBL) to the productivity of Mono Lake was studied using a coupled hydrodynamic and ecological model validated against field data. The coupled model enabled us to differentiate between the role of biotic components and hydrodynamic forcing on the internal recycling of nutrients necessary to sustain primary productivity. A 4-year period (1991-1994) was simulated in which recycled nutrients from zooplankton excretion and bacterially-mediated mineralization exceeded sediment fluxes as the dominant source for primary productivity. Read More

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http://dx.doi.org/10.1186/1746-1448-4-11DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2535590PMC
August 2008
3 Reads

DNA is preserved and maintains transforming potential after contact with brines of the deep anoxic hypersaline lakes of the Eastern Mediterranean Sea.

Saline Systems 2008 Aug 5;4:10. Epub 2008 Aug 5.

University of Milan, Department of Food Science and Microbiology, Milan, Italy.

Background: Extracellular dissolved DNA has been demonstrated to be present in many terrestrial and aquatic environments, actively secreted, or released by decaying cells. Free DNA has the genetic potential to be acquired by living competent cells by horizontal gene transfer mediated by natural transformation. The aim of this work is to study the persistence of extracellular DNA and its biological transforming activity in extreme environments like the deep hypersaline anoxic lakes of the Mediterranean Sea. Read More

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http://dx.doi.org/10.1186/1746-1448-4-10DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2531117PMC
August 2008
6 Reads

Nitrogen metabolism in haloarchaea.

Saline Systems 2008 Jul 1;4. Epub 2008 Jul 1.

División de Bioquímica y Biología Molecular, Facultad de Ciencias, Universidad de Alicante, Alicante, Spain.

The nitrogen cycle (N-cycle), principally supported by prokaryotes, involves different redox reactions mainly focused on assimilatory purposes or respiratory processes for energy conservation. As the N-cycle has important environmental implications, this biogeochemical cycle has become a major research topic during the last few years. However, although N-cycle metabolic pathways have been studied extensively in Bacteria or Eukarya, relatively little is known in the Archaea. Read More

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http://dx.doi.org/10.1186/1746-1448-4-9DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2483277PMC
July 2008
4 Reads

Diversity of Bacillus-like organisms isolated from deep-sea hypersaline anoxic sediments.

Saline Systems 2008 Jun 9;4. Epub 2008 Jun 9.

Department of Biological Sciences, University of Essex, Wivenhoe Park, Colchester, UK.

Background: The deep-sea, hypersaline anoxic brine lakes in the Mediterranean are among the most extreme environments on earth, and in one of them, the MgCl2-rich Discovery basin, the presence of active microbes is equivocal. However, thriving microbial communities have been detected especially in the chemocline between deep seawater and three NaCl-rich brine lakes, l'Atalante, Bannock and Urania. By contrast, the microbiota of these brine-lake sediments remains largely unexplored. Read More

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http://dx.doi.org/10.1186/1746-1448-4-8DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2464584PMC
June 2008
5 Reads

Rotifers from selected inland saline waters in the Chihuahuan Desert of México.

Saline Systems 2008 Jun 4;4. Epub 2008 Jun 4.

Department of Biological Sciences, University of Texas-El Paso, El Paso, TX 79968, USA.

Background: In spite of considerable efforts over past decades we still know relatively little regarding the biogeography of rotifers of inland waters in México. To help rectify this we undertook an extensive survey of the rotifer fauna of 48 water bodies in the Chihuahuan Desert of México.

Results: Of the sites surveyed, 21 had salinities >or= 2000 microS cm-1 and in these we found 57 species of monogonont rotifers and several bdelloids. Read More

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http://dx.doi.org/10.1186/1746-1448-4-7DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2441627PMC
June 2008
2 Reads

Compatible solute influence on nucleic acids: many questions but few answers.

Authors:
Matthias Kurz

Saline Systems 2008 Jun 3;4. Epub 2008 Jun 3.

Institut für Mikrobiologie & Biotechnologie, Rheinische Friedrich Wilhelms-Universität Bonn, Bonn, Germany.

Compatible solutes are small organic osmolytes including but not limited to sugars, polyols, amino acids, and their derivatives. They are compatible with cell metabolism even at molar concentrations. A variety of organisms synthesize or take up compatible solutes for adaptation to extreme environments. Read More

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http://dx.doi.org/10.1186/1746-1448-4-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2430576PMC
June 2008
3 Reads

On the origin of prokaryotic "species": the taxonomy of halophilic Archaea.

Saline Systems 2008 May 16;4. Epub 2008 May 16.

University of Maryland Biotechnology Institute, Center of Marine Biotechnology, Baltimore, MD 21202, USA.

The consistent use of the taxonomic system of binomial nomenclature (genus and species) was first popularized by Linnaeus nearly three-hundred years ago to classify mainly plants and animals. His main goal was to give labels that would ensure that biologists could agree on which organism was under investigation. One-hundred fifty years later, Darwin considered the term species as one of convenience and not essentially different from variety. Read More

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http://dx.doi.org/10.1186/1746-1448-4-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2397426PMC
May 2008
4 Reads

Regulation of osmoadaptation in the moderate halophile Halobacillus halophilus: chloride, glutamate and switching osmolyte strategies.

Saline Systems 2008 Apr 28;4. Epub 2008 Apr 28.

Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Goethe University Frankfurt, Frankfurt am Main, Germany.

The moderate halophile Halobacillus halophilus is the paradigm for chloride dependent growth in prokaryotes. Recent experiments shed light on the molecular basis of the chloride dependence that is reviewed here. In the presence of moderate salinities Halobacillus halophilus mainly accumulates glutamine and glutamate to adjust turgor. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-4-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2412884PMC
April 2008
10 Reads

Chemical and physical properties of some saline lakes in Alberta and Saskatchewan.

Saline Systems 2008 Apr 22;4. Epub 2008 Apr 22.

School of Oceanography, University of Washington, Seattle 98195-5351, USA.

Background: The Northern Great Plains of Canada are home to numerous permanent and ephemeral athalassohaline lakes. These lakes display a wide range of ion compositions, salinities, stratification patterns, and ecosystems. Many of these lakes are ecologically and economically significant to the Great Plains Region. Read More

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http://dx.doi.org/10.1186/1746-1448-4-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2365950PMC
April 2008
8 Reads

Microbial life at high salt concentrations: phylogenetic and metabolic diversity.

Authors:
Aharon Oren

Saline Systems 2008 Apr 15;4. Epub 2008 Apr 15.

Department of Plant and Environmental Sciences, Hebrew University of Jerusalem, Jerusalem, Israel.

Halophiles are found in all three domains of life. Within the Bacteria we know halophiles within the phyla Cyanobacteria, Proteobacteria, Firmicutes, Actinobacteria, Spirochaetes, and Bacteroidetes. Within the Archaea the most salt-requiring microorganisms are found in the class Halobacteria. Read More

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http://dx.doi.org/10.1186/1746-1448-4-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2329653PMC
April 2008
4 Reads

Proteomics with a pinch of salt: a cyanobacterial perspective.

Saline Systems 2008 Apr 15;4. Epub 2008 Apr 15.

Department of Chemical and Process Engineering, The University of Sheffield, Sheffield, UK.

Cyanobacteria are ancient life forms and have adapted to a variety of extreme environments, including high salinity. Biochemical, physiological and genetic studies have contributed to uncovering their underlying survival mechanisms, and as recent studies demonstrate, proteomics has the potential to increase our overall understanding further. To date, most salt-related cyanobacterial proteomic studies have utilised gel electrophoresis with the model organism Synechocystis sp. Read More

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http://dx.doi.org/10.1186/1746-1448-4-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2386806PMC
April 2008
3 Reads

Transcriptional profiling of the model Archaeon Halobacterium sp. NRC-1: responses to changes in salinity and temperature.

Saline Systems 2007 Jul 25;3. Epub 2007 Jul 25.

University of Maryland Biotechnology Institute, Center of Marine Biotechnology, Baltimore, MD 21202, USA.

Background: The model halophile Halobacterium sp. NRC-1 was among the first Archaea to be completely sequenced and many post-genomic tools, including whole genome DNA microarrays are now being applied to its analysis. This extremophile displays tolerance to multiple stresses, including high salinity, extreme (non-mesophilic) temperatures, lack of oxygen, and ultraviolet and ionizing radiation. Read More

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http://dx.doi.org/10.1186/1746-1448-3-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1971269PMC
July 2007
6 Reads

Urmia Lake (Northwest Iran): a brief review.

Saline Systems 2007 May 16;3. Epub 2007 May 16.

Iranian Artemia Research Center, P.O. Box: 57135-1367, Urmia, Iran.

Lake Urmia (or Ormiyeh) is one of the largest hypersaline lakes in the world and the habitat of a unique bisexual Artemia species (A. urmiana). Despite this, and several other values of the lake, little literature on it has been published. Read More

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http://dx.doi.org/10.1186/1746-1448-3-5DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1884160PMC
May 2007
14 Reads

Inter- and intraspecific genetic and morphological variation in a sibling pair of carabid species.

Saline Systems 2007 Apr 24;3. Epub 2007 Apr 24.

Entomology Department, Royal Belgian Institute of Natural Sciences, Vautierstreet 29, Brussels, Belgium.

Background: Pogonus littoralis and Pogonus chalceus are very close related species with quite different ecological preferences within salt marshes. We study the evolutionary processes in and between these presumably young species. Therefore, we compare the variation in ecologically relevant characters and the genetic variation within one of the species (intraspecific differentiation) with the variation of the two types of characters between the two species (interspecific variation). Read More

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http://dx.doi.org/10.1186/1746-1448-3-4DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1866230PMC
April 2007
4 Reads

The MAP kinase HwHog1 from the halophilic black yeast Hortaea werneckii: coping with stresses in solar salterns.

Saline Systems 2007 Mar 9;3. Epub 2007 Mar 9.

Institute of Biochemistry, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, Ljubljana, Slovenia.

Background: Hortaea werneckii is one of the most salt-tolerant species among microorganisms. It has been isolated from hypersaline waters of salterns as one of the predominant species of a group of halophilic and halotolerant melanized yeast-like fungi, arbitrarily named as "black yeasts". It has previously been shown that H. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
Publisher Site
http://dx.doi.org/10.1186/1746-1448-3-3DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1828057PMC
March 2007
7 Reads

A traditional Japanese-style salt field is a niche for haloarchaeal strains that can survive in 0.5% salt solution.

Saline Systems 2007 Mar 9;3. Epub 2007 Mar 9.

Bio-Nano Electronics Research Centre, Toyo University, 2100 Kujirai, Kawagoe, Saitama 350-8585, Japan.

Background: Most of the haloarchaeal strains have been isolated from hypersaline environments such as solar evaporation ponds, salt lakes, or salt deposits, and they, with some exceptions, lyse or lose viability in very low-salt concentrations. There are no salty environments suitable for the growth of haloarchaea in Japan. Although Natrialba asiatica and Haloarcula japonica were isolated many years ago, the question, "Are haloarchaea really thriving in natural environments of Japan?" has remained unanswered. Read More

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http://dx.doi.org/10.1186/1746-1448-3-2DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1828056PMC
March 2007
2 Reads

Saline Systems highlights for 2006.

Saline Systems 2007 Jan 23;3. Epub 2007 Jan 23.

Saline Systems is a journal devoted to both basic and applied studies of saline and hypersaline environments and their biodiversity. Here, I review the reports and commentaries published in the journal in 2006, including some exploring the geochemistry of saline estuaries, lakes, and ponds, others on the ecology and molecular biology of the indigenous halophilic organisms, and still others addressing the environmental challenges facing saline environments. Several studies are relevant to applications in biotechnology and aquaculture. Read More

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http://dx.doi.org/10.1186/1746-1448-3-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1784102PMC
January 2007
2 Reads

Hindcasting of nutrient loadings from its catchment on a highly valuable coastal lagoon: the example of the Fleet, Dorset, UK, 1866-2004.

Saline Systems 2006 Dec 29;2:15. Epub 2006 Dec 29.

Environment Agency Wales, Cambria House, 29 Newport Road, Cardiff, CF24 0TP, UK.

Background: Nutrient loadings from its catchment upon The Fleet, a highly valuable coastal lagoon in Southern England, were hindcast for the period AD 1866-2004, using a catchment model, export coefficients, and historical data on land use changes, livestock numbers, and human population. Agriculture was the main nutrient source throughout, other inputs representing minor contributions. Permanent pasture was historically the main land use, with temporary grassland and cereals increasing during the mid-20th century. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
Publisher Site
http://dx.doi.org/10.1186/1746-1448-2-15DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1781078PMC
December 2006
3 Reads

Inland hypersaline lakes and the brine shrimp Artemia as simple models for biodiversity analysis at the population level.

Saline Systems 2006 Nov 28;2:14. Epub 2006 Nov 28.

Laboratory of Genetics & Aquaculture, Universidad de Los Lagos, P, O, Box 933, Osorno, Chile.

Biodiversity can be measured at different hierarchical levels, from genetic diversity within species to diversity of ecosystems, though policy-makers tend to use species richness. The 2010 goal of reducing biodiversity loss, agreed by the subscribers to the Convention on Biological Diversity, requires simple and reliable protocols to evaluate biodiversity at any level in a given ecosystem. Stakeholders, particularly policy makers, need to understand how ecosystem components interact to produce social and economic benefits on the long run, whilst scientists are expected to fulfil this demand by testing and modelling ideally simple (low diversity) ecosystems, and by monitoring key species. Read More

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http://aquaticbiosystems.biomedcentral.com/articles/10.1186/
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http://dx.doi.org/10.1186/1746-1448-2-14DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1684253PMC
November 2006
7 Reads