MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'Saline Systems' source. Sat, 20 Mar 2010 16:08:19 +0100 http://www.medworm.com/index.php?rid=3301575&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F6%2F1%2F2 Conclusions: The complex patterns described here represent the first observation of picophytoplankton dynamics along a continuous gradient where salinity increases from 1.8% to 15.5%. This result provides new insight into the distribution of pico-autotrophic organisms along strong salinity gradients and allows for a better understanding of the overall pelagic functioning in saline systems which is critical for the management of these precious and climatically-stress ecosystems. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=3301575 Wed, 24 Feb 2010 00:00:00 +0100 3301575 http://www.medworm.com/index.php?rid=3283059&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F6%2F1%2F1 Conclusion: The gammaproteobacteria were found to be the most abundant bacterial group in Sundarban sediment. Many clones showed similarity with previously reported bacterial lineages recovered from various marine sediments. The present study indicates a probable hydrocarbon and oil contamination in this sediment. In the present study, a number of clones were identified that have shown similarity with bacterial clones or isolates responsible for the maintenance of the S-cycle in the saline environment. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=3283059 Wed, 17 Feb 2010 00:00:00 +0100 3283059 http://www.medworm.com/index.php?rid=3018598&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F9 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 8.5, and elevated temperature optima, above 50oC. If all three conditions are required for optimal growth, these microorganisms are termed "poly-extremophiles". However, only a very few extreme halophiles able to grow optimally under alkaline conditions as well as at elevated temperatures have been isolated so far. Therefore the question is: do the combined extreme growth conditions of the recently isol... Saline Systems journals http://www.medworm.com/rss/comments.php?id=3018598 Mon, 23 Nov 2009 00:00:00 +0100 3018598 http://www.medworm.com/index.php?rid=2772075&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F8 Conclusions: Synechocystis sp. PCC6803 has the ability to regulate essential metabolic processes to enable survival in high salt environments. This adaptation strategy is assisted by further regulation of proteins involved in non-metabolic cellular processes, supported by transcriptional and post-transcriptional control. This study demonstrates the effectiveness of using a systems biology approach in answering environmental, and in particular, salt adaptation questions in Synechocystis sp. PCC6803. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=2772075 Sun, 06 Sep 2009 23:00:00 +0100 2772075 http://www.medworm.com/index.php?rid=2579781&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F6 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: 3.22 x 10-8 and 4.19 x 10-10 M/mg protein, respectively). The number of maximum binding sites (BMAX) was approximately two times higher in the hepatopancreas than in the YO (BMAX values: 9.24 x 10-9 and 4.8 x 10-9 M/mg protein, respectively). Furthermore, MIH binding si... Saline Systems journals http://www.medworm.com/rss/comments.php?id=2579781 Mon, 06 Jul 2009 23:00:00 +0100 2579781 http://www.medworm.com/index.php?rid=2579780&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F7 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. A hepatopancreas fragments incubation system was developed and the levels of vitellogenin (VtG), as well as VtG mRNA and heterogeneous nuclear (hn)VtG RNA were determined using RIA or QPCR, respectively. MIH titers w... Saline Systems journals http://www.medworm.com/rss/comments.php?id=2579780 Mon, 06 Jul 2009 23:00:00 +0100 2579780 http://www.medworm.com/index.php?rid=2555550&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F5 Conclusion: In Baja Mexico we found D. salina and D. salina/bardawil species by using intron-sizing-method. The National Center for Biotechnology Information (NCBI) Dunaliella 18S rDNA gene sequences were analyzed with our methodology and extraordinary correlation was found with experimental results. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=2555550 Mon, 29 Jun 2009 23:00:00 +0100 2555550 http://www.medworm.com/index.php?rid=2340220&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F4 Conclusion: Low salinity favoured the presence of heterocystous cyanobacteria, while very high salinity mainly supported the growth of non-heterocystous genera. High nitrogen content in the low salt soils is proposed to be a result of reduced ammonia volatilization compared to the high salt soils. Although many environmental factors could potentially determine the microbial community present in these multidimensional ecosystems, changes in the diversity of cyanobacteria in rice fields was correlated to salinity. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=2340220 Mon, 06 Apr 2009 04:00:00 +0100 2340220 http://www.medworm.com/index.php?rid=2194580&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F5%2F1%2F2 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 (106-108 targets ml-1) and lower abundance from the autumn-spring (103-105 targets ml-1). However, addition of concentrated dissolved organic matter into the evaporation ponds during winter immediately resulted in a proliferation of SRB, despite the lower wastewater temperature (12-14... Saline Systems journals http://www.medworm.com/rss/comments.php?id=2194580 Wed, 18 Feb 2009 05:00:00 +0100 2194580 http://www.medworm.com/index.php?rid=1911141&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F15 Since its discovery in 1998, representatives of the extremely halophilic bacterium Salinibacter ruber have been found in many hypersaline environments across the world. Here, we review the available information about the distribution, abundance and diversity of this member of the Bacteroidetes. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=1911141 Tue, 28 Oct 2008 04:00:00 +0100 1911141 http://www.medworm.com/index.php?rid=1794038&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F14 Chromohalobacter salexigens, a -proteobacteria 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. A supplementary solute, trehalose, not present in cells grown at 37C, is accumulated at higher temperatures, suggesting its involvement in the response to heat stress. Trehalose is also accumulated at 37C in ectoine-deficient mutants, indicating that ectoines suppress trehalose synthesis in the wild type strain. The genes for ectoine (ectABC) and hydroxyectoine (ectD, ectE) production are arranged in three ... Saline Systems journals http://www.medworm.com/rss/comments.php?id=1794038 Mon, 15 Sep 2008 04:00:00 +0100 1794038 http://www.medworm.com/index.php?rid=1556157&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F7 Conclusion: This study illustrates the diversity of the rotiferan fauna of inland saline systems and the uniqueness among waterbodies. Conservation of these systems is needed to preserve these unique sources of biodiversity that include rotifers and the other endemic species found in association with them. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=1556157 Wed, 04 Jun 2008 04:00:00 +0100 1556157 http://www.medworm.com/index.php?rid=1494142&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F7 Conclusions: This study illustrates the diversity of the rotiferan fauna of inland saline systems and the uniqueness among waterbodies. Conservation of these systems is needed to preserve these unique sources of biodiversity that include rotifers and the other endemic species found in association with them. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=1494142 Wed, 04 Jun 2008 04:00:00 +0100 1494142 http://www.medworm.com/index.php?rid=1474763&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F5 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. In the modern era, exploration of the world's niches together with advances in genomics have expanded the number of named species to over 1.8 million, including many microorganisms. However, even this large number excludes over 90% of microorganisms that have yet to be cultured or classified. In naming new isolates in the microbial world, the challenge... Saline Systems journals http://www.medworm.com/rss/comments.php?id=1474763 Fri, 16 May 2008 04:00:00 +0100 1474763 http://www.medworm.com/index.php?rid=1403953&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F4 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. The transcription of glnA2 (encoding a glutamine synthetase) as well as the glutamine synthetase activity were identified as chloride dependent steps. Halobacillus halophilus switches its osmolyte strategy and produces proline as the main compatible solute at high salinities. Furthermore, Halobacillus halophilus also shifts its osmolyte strategy at the transition from the exponential to the stationary phase where proline is exchanged by ectoine. Glutamate was ... Saline Systems journals http://www.medworm.com/rss/comments.php?id=1403953 Mon, 28 Apr 2008 04:00:00 +0100 1403953 http://www.medworm.com/index.php?rid=1390852&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F3 Conclusions: The wide range of salinities found across a small geographic area makes the Canadian saline lakes region ideal for testing salinity proxies. A nonlinear increase in salinity at Redberry Lake is likely influenced by its morphometry. This acceleration has ecological implications for the migratory bird species found within the Redberry Important Bird Area. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=1390852 Tue, 22 Apr 2008 04:00:00 +0100 1390852 http://www.medworm.com/index.php?rid=1373155&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F1 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. PCC6803. Moreover, focus has been on 2-4% w/v NaCl concentrations within different cellular compartments. Under these conditions, Synechocystis sp. PCC6803 was found to respond and adapt to salt stress through synthesis of general and specific stress proteins, altering the protein composition of extracellular layers, a... Saline Systems journals http://www.medworm.com/rss/comments.php?id=1373155 Tue, 15 Apr 2008 04:00:00 +0100 1373155 http://www.medworm.com/index.php?rid=1373154&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F4%2F1%2F2 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. Halobacterium and most of its relatives require over 100-150 g/l salt for growth and structural stability. Also within the order Methanococci we encounter halophilic species. Halophiles and non-halophilic relatives are often found together in the phylogenetic tree, and many genera, families and orders have representatives with greatly different salt requirement and tolerance. A few phylogenetically coherent groups consist of halophiles only: the order Halobacteriales, family Halobacteriaceae (Euryarch... Saline Systems journals http://www.medworm.com/rss/comments.php?id=1373154 Tue, 15 Apr 2008 04:00:00 +0100 1373154 http://www.medworm.com/index.php?rid=848249&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F3%2F1%2F6 Conclusion: Transcriptional profiling showed that Halobacterium sp. NRC-1 is highly responsive to its environment and provided insights into some of the specific responses at the level of gene expression. Responses to changes in salt conditions appear to be designed to minimize the loss of essential ionic species and abate possible toxic effects of others, while exposure to temperature extremes elicit responses to promote protein folding and limit factors responsible for growth inhibition. This work lays the foundation for further bioinformatic and genetic studies which will lead to a more comprehensive understanding of the biology of a model halophilic Archaeon. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=848249 Wed, 25 Jul 2007 04:00:00 +0100 848249 http://www.medworm.com/index.php?rid=619675&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F3%2F1%2F5 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. The present paper is an attempt to provide a brief review on various aspects of the lake. Urmia Lake, located in northwestern Iran, is an oligotrophic lake of thalassohaline origin with a total surface area between 4750 and 6100 km2 and a maximum depth of 16 m at an altitude of 1250 m. The lake is divided into north and south parts separated by a causeway in which a 1500-m gap provides little exchange of water between the two parts. Due to drought and increased demands for agricultural water in the lake's basin, the salinity of the lake has risen to more... Saline Systems journals http://www.medworm.com/rss/comments.php?id=619675 Wed, 16 May 2007 04:00:00 +0100 619675 http://www.medworm.com/index.php?rid=567958&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F3%2F1%2F4 Conclusions: The different ecotypes in the highly polytypic species P. chalceus are as highly differentiated in ecological characters as true species, but are not recognised as such by screening neutral DNA polymorphisms. This can be interpreted as a case of ongoing speciation driven by natural selection adapting each ecotype to its respective ecological niche. The same ecological process can be recognised in the differentiation between the two sister species, where en plus reproductive isolation between the two gene pools occurred, allowing independent drift and mutation accumulation in neutral genetic characters. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=567958 Tue, 24 Apr 2007 04:00:00 +0100 567958 http://www.medworm.com/index.php?rid=459726&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F3%2F1%2F3 Conclusions: The HOG signalling pathway has an important role in sensing and responding to hyper-osmolar, oxidative and high-temperature stresses in the halophilic fungi H. werneckii. These findings are an important advance in our understanding of the HOG pathway response to stress in H. werneckii, a proposed model organism for studying the salt tolerance of halophilic and halotolerant eukaryotes. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=459726 Fri, 09 Mar 2007 05:00:00 +0100 459726 http://www.medworm.com/index.php?rid=376159&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F3%2F1%2F1 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. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=376159 Tue, 23 Jan 2007 07:00:00 +0100 376159 http://www.medworm.com/index.php?rid=440766&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F15 Conclusion: The Fleet has been grossly overloaded with nitrogen since 1866, climaxing during the 1980s. Total phosphorus inputs lay below 'permissible' limits until the 1980s, exceeding them in inner, less tidal parts of the lagoon, during the 1940s. Loadings on Abbotsbury Bay exceeded 'permissible' limits by the 1860s, becoming 'dangerous' during the mid-20th century. Phosphorus stripping at point sources will not significantly reduce loadings to all parts of the lagoon. Installation of 5 m buffer strips throughout the catchment and shoreline will marginally affect nitrogen loadings, but will reduce phosphorus inputs to the West Fleet below 'permissible' limits. Only a combination of measures will significantly affect Abbotsbury Bay, where, without effluent diversion, loadings will remain... Saline Systems journals http://www.medworm.com/rss/comments.php?id=440766 Fri, 29 Dec 2006 05:00:00 +0100 440766 http://www.medworm.com/index.php?rid=362875&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F13 Conclusion: This database will contribute to the knowledge of radiation centers and serves as a baseline for further biogeographic studies, population characterization, management, and monitoring of Artemia biodiversity. Likewise, the impact of colonization and translocations for aquaculture purposes can be better assessed with a baseline for reference. Mexico and Chile exemplify the need to increase and further integrate regional information to tackle fundamental problems underlying practical utilization of Artemia. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=362875 Fri, 24 Nov 2006 07:00:00 +0100 362875 http://www.medworm.com/index.php?rid=362876&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F12 Conclusion: Salinity was the first factor determining community composition and structure in Rambla Salada stream followed by the type of habitat. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=362876 Mon, 02 Oct 2006 06:00:00 +0100 362876 http://www.medworm.com/index.php?rid=362877&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F10 Conclusion: Since NhaD is an antiporter known so far only from halophilic or haloalcaliphilic Proteobacteria one can speculate that this type of antiporter provides a special mechanism for adaptation to marine habitats. As was already speculated – though without supporting data – and substantiated in this study this might be active Na+-import for osmoregulatory purposes. (Source: Saline Systems) Saline Systems journals http://www.medworm.com/rss/comments.php?id=362877 Thu, 27 Jul 2006 06:00:00 +0100 362877 http://www.medworm.com/index.php?rid=362878&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F9 Urmia Lake has been designated as an international park by the United Nations. The lake occupies a 5700 km2 depression in northwestern Iran. Thirteen permanent rivers flow into the lake. Water level in the lake has been decreased 3.5 m in the last decade due to a shortage of precipitation and progressively dry climate. Geologically the lake basin is considered to be a graben of tectonic origin. Na, K, Ca, Li and Mg are the main cations with Cl, SO4, and HCO3 as the main anions. F & Br are the other main elements in the lake. A causeway crossing the lake is under construction, which may affect the lake's annual geochemistry. The main object of this project is mainly to consider the potential of K-mineral production along with ongoing salt production.Seven hundred and four samples were taken... Saline Systems journals http://www.medworm.com/rss/comments.php?id=362878 Tue, 11 Jul 2006 06:00:00 +0100 362878 http://www.medworm.com/index.php?rid=362879&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F8 The equatorial Pacific Ocean atoll islands of Kiritimati and Teraina encompass great physical, chemical and biological variability within extreme lacustrine environments. Surveys of lake chemistry and sediments revealed both intra- and inter-island variability. A survey of more than 100 lakes on Kiritimati found salinities from nearly fresh to 150 ppt with the highest values occurring within the isolated, inland portions of the island away from the influence of groundwater or extreme tides. Dissolved oxygen (DO) and pH values also showed considerable variability with a less regular spatial pattern, but were both generally inversely related to salinity. Series of lakes, progressively more isolated from marine communication, present a modern analog to the chemical and morphologic evolution o... Saline Systems journals http://www.medworm.com/rss/comments.php?id=362879 Mon, 03 Jul 2006 06:00:00 +0100 362879 http://www.medworm.com/index.php?rid=362880&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F7 Salt stress is one of the most serious factors limiting the productivity of rice, the staple diet in many countries. Gibberellic acid has been reported to reduce NaCl-induced growth inhibition in some plants including rice. Most paddy soils have a natural population of Cyanobacteria, prokaryotic photosynthethic microorganisms, which synthesize and liberate plant growth regulators such as gibberellins that could exert a natural beneficial effect on salt stressed rice plants. The aim of this work was to evaluate the effect of the cyanobacterium Scytonema hofmanni extracellular products on the growth of rice seedlings inhibited by NaCl and to compare it with the effect of the gibberellic acid in the same stress condition. Growth (length and weight of the seedlings) and biochemical parameters ... Saline Systems journals http://www.medworm.com/rss/comments.php?id=362880 Tue, 06 Jun 2006 06:00:00 +0100 362880 http://www.medworm.com/index.php?rid=362881&cid=s_34093_67_f&fid=34093&url=http%3A%2F%2Fwww.salinesystems.org%2Fcontent%2F2%2F1%2F6 The XI International Rotifer Symposium was held during 11–18 March, 2006 at the National Autonomous University of Mexico Campus Iztacala located at the North Mexico City (Mexico). These triennial international meetings, first organized in Austria by Late Ruttner-Kolisko in September 1976, are gradually becoming the focal point of discussion and collaboration from rotifer workers across the world. The present XI symposium was attended by 125 participants from 20 nations. During this meeting, different themes of rotifer research from morphology to molecular biology were considered. In addition, there were four invited lectures and four workshops covering different themes of the symposium. During the last 30 years, rotifer research has witnessed gradual shift from the conventional morpholog... Saline Systems journals http://www.medworm.com/rss/comments.php?id=362881 Mon, 15 May 2006 06:00:00 +0100 362881