Interplay of adaptive capabilities of Halomonas sp. AAD12 under salt stress

Ceylan, Selim; Yilan, Gülşah; Akbulut, Berna Sarıyar; Poli, Annarita; Kazan, Dilek

doi:10.1016/j.jbiosc.2012.02.030

Cited by 24 publications

(16 citation statements)

References 58 publications

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“…Ceylan et al [183] studied the osmoadaptive mechanism in Halomonas sp. AAD12 and investigated its proteome maps and osmolyte accumulation strategy under salt stress.…”

Section: Habitat: Hypersaline Environmentsmentioning

confidence: 99%

Microbial Diversity in Extreme Marine Habitats and Their Biomolecules

et al. 2017

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Extreme marine environments have been the subject of many studies and scientific publications. For many years, these environmental niches, which are characterized by high or low temperatures, high-pressure, low pH, high salt concentrations and also two or more extreme parameters in combination, have been thought to be incompatible to any life forms. Thanks to new technologies such as metagenomics, it is now possible to detect life in most extreme environments. Starting from the discovery of deep sea hydrothermal vents up to the study of marine biodiversity, new microorganisms have been identified, and their potential uses in several applied fields have been outlined. Thermophile, halophile, alkalophile, psychrophile, piezophile and polyextremophile microorganisms have been isolated from these marine environments; they proliferate thanks to adaptation strategies involving diverse cellular metabolic mechanisms. Therefore, a vast number of new biomolecules such as enzymes, polymers and osmolytes from the inhabitant microbial community of the sea have been studied, and there is a growing interest in the potential returns of several industrial production processes concerning the pharmaceutical, medical, environmental and food fields.

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“…Ceylan et al [183] studied the osmoadaptive mechanism in Halomonas sp. AAD12 and investigated its proteome maps and osmolyte accumulation strategy under salt stress.…”

Section: Habitat: Hypersaline Environmentsmentioning

confidence: 99%

Microbial Diversity in Extreme Marine Habitats and Their Biomolecules

et al. 2017

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“…For example, Halomonas sp. AAD12 showed significant variations in the expression of proteins involved in osmoregulation, stress response, energy generation and transport under salt stress (Ceylan et al 2012). …”

Section: Intracellular Adaptationsmentioning

confidence: 99%

Properties of the halophyte microbiome and their implications for plant salt tolerance

Ruppel

Franken

Witzel

2013

Functional Plant Biol.

145

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Abstract. Saline habitats cover a wide area of our planet and halophytes (plants growing naturally in saline soils) are increasingly used for human benefits. Beside their genetic and physiological adaptations to salt, complex ecological processes affect the salinity tolerance of halophytes. Hence, prokaryotes and fungi inhabiting roots and leaves can contribute significantly to plant performance. Members of the two prokaryotic domains Bacteria and Archaea, as well as of the fungal kingdom are known to be able to adapt to a range of changes in external osmolarity. Shifts in the microbial community composition with increasing soil salinity have been suggested and research in functional interactions between plants and micro-organisms contributing to salt stress tolerance is gaining interest. Among others, microbial biosynthesis of polymers, exopolysaccharides, phytohormones and phytohormones-degrading enzymes could be involved.

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“…AAD12 are ectoine, proline and hydroxyectoine. In our previous work, we have reported that at 37°C with trisodium citrate as the carbon source, proline and ectoine were equally important osmolytes at low salinity whereas proline was the major osmolyte at higher salinity [20]. In contrast, ectoine was the dominating osmolyte in M63 media supplemented with glucose.…”

Section: Discussionmentioning

confidence: 90%

“…Extraction and determination of intracellular osmolytes were carried out using the method published by Motta et al [22] and previously described by Ceylan et al [20]. For the determination of osmolytes, 1 H -nuclear magnetic resonance ( 1 H-NMR) spectra were recorded at 25°C on a Varian Unity Inova spectrometer operating at 500 MHz.…”

Section: Extraction and Analysis Of Osmolytesmentioning

confidence: 99%

“…Its optimum growth was at 37°C with 10% NaCl in Brown medium, but it tolerated NaCl concentrations up to 20% (w/v) (Ceylan et al, 2011). With trisodium citrate as the carbon source, proline and ectoine were equally important osmolytes at low salinity whereas proline became its major osmolyte at higher salinity [20]. Moreover, at higher salinity hydroxyectoine accumulation was also significant.…”

Section: Introductionmentioning

confidence: 99%

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Moderately Halophilic Bacterium Halomonas sp. AAD12: A Promising Candidate as a Hydroxyectoine Producer

B¹,

A²,

G³

2015

J Microb Biochem Technol

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Properties of osmolytes that help protect biological molecules from stress and preserve their functions impose significant importance to finding new organisms with different osmolyte accumulation strategies. To this end, the moderately halophilic Halomonas sp. AAD12 has been characterized for its adaptation to stress conditions with particular emphasis on its osmolyte accumulation strategy. The effect of temperature, salinity, aeration and organic components on the accumulation of osmoprotectants and synthesis of fatty acids were examined in M63 minimal medium. Ectoine, proline and hydroxyectoine were the major osmolytes and palmitic acid (16:0), palmitoleic acid (16:1), and oleic acid (18:1) were the major fatty acids. Overall, ectoine yield was the highest among the three osmolytes at all salt concentrations and temperatures investigated. However, high salinity reduced ectoine yield with a concomitant increase in hydroxyectoine yield. The yield of hydroxyectoine as high as 525 mol/g dry cell mass at 37°C suggested that this microorganism could be a promising candidate as a hydroxyectoine producer.

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Interplay of adaptive capabilities of Halomonas sp. AAD12 under salt stress

Cited by 24 publications

References 58 publications

Microbial Diversity in Extreme Marine Habitats and Their Biomolecules

Microbial Diversity in Extreme Marine Habitats and Their Biomolecules

Properties of the halophyte microbiome and their implications for plant salt tolerance

Moderately Halophilic Bacterium Halomonas sp. AAD12: A Promising Candidate as a Hydroxyectoine Producer

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