Compatible Solutes
Mostrando 1-12 de 62 artigos, teses e dissertações.
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1. Changes in osmoregulatory metabolism of cotton genotypes during water deficit and recovery period
RESUMO O objetivo do presente estudo foi avaliar as mudanças no metabolismo osmorregulador de genótipos de algodoeiro submetidos ao déficit hídrico e ao período de recuperação. Em casa de vegetação, seis genótipos de algodoeiro e dois manejos hídricos foram combinados em esquema fatorial 6 x 2, em delineamento inteiramente casualizado, avaliados a
Rev. bras. eng. agríc. ambient.. Publicado em: 15/07/2019
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2. Respostas fisiológicas do umbuzeiro (Spondias tuberosa Arruda) aos estresses hídrico e salino
Dentre as principais fruteiras nativas do Nordeste, especialmente aquelas encontradas no semi-árido, o umbuzeiro (Spondias tuberosa Arruda) desponta com uma alternativa importante, por ser uma fruta bem aceita pelo consumidor e por ter uma boa produção em ambientes secos. Dessa forma, o comércio dos frutos em feiras livres ou através de cooperativas pro
Publicado em: 2008
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3. Distribution of compatible solutes in the halophilic methanogenic archaebacteria.
Accumulation of compatible solutes, by uptake or de novo synthesis, enables bacteria to reduce the difference between osmotic potentials of the cell cytoplasm and the extracellular environment. To examine this process in the halophilic and halotolerant methanogenic archaebacteria, 14 strains were tested for the accumulation of compatible solutes in response
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4. Thermoprotection of Bacillus subtilis by Exogenously Provided Glycine Betaine and Structurally Related Compatible Solutes: Involvement of Opu Transporters
Bacillus subtilis possesses five osmotically regulated transporters (Opu) for the uptake of various compatible solutes for osmoprotective purposes. We have now found that compatible solutes also function as thermoprotectants for B. subtilis. Low concentrations of glycine betaine enhanced the growth of the B. subtilis wild-type strain JH642 at its maximal gro
American Society for Microbiology.
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5. Compatible Solutes Protect against Chaotrope (Ethanol)-Induced, Nonosmotic Water Stress
Water stress is one of the major stresses experienced by cellular systems and can take a number of distinct forms. In response to turgor-related osmotic stress, cells produce compatible solutes that are macromolecule protectants and also counteract the outflow of water from stressed cells. In this report we show that the germination of conidia of Aspergillus
American Society for Microbiology.
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6. Glycine betaine and potassium ion are the major compatible solutes in the extremely halophilic methanogen Methanohalophilus strain Z7302.
Methanohalophilus strain Z7302 was previously isolated from a hypersaline environment and grows over a range of NaCl concentrations from 1.7 to 4.4 M. We examined the relationships between cell growth rate, cell volume, and intracellular solute concentrations with increasing salinity. This extremely halophilic methanogen synthesized three zwitterionic compou
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7. Role for Compatible Solutes Glycine Betaine and l-Carnitine in Listerial Barotolerance
Increased listerial barotolerance at elevated osmolarity is attributed, in part, to the presence of accumulated betaine and l-carnitine. The percentage of listerial survival following exposure to 400 MPa for 5 min increased from 0.008 to 0.02% with added l-carnitine (5 mM) and to 0.05% with added betaine (5 mM). Furthermore, listerial cells incapable of tran
American Society for Microbiology.
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8. Effects of Ionic and Osmotic Strength on the Glucosyltransferase of Rhizobium meliloti Responsible for Cyclic β-(1,2)-Glucan Biosynthesis
The cyclic β-(1,2)-glucans of Rhizobium meliloti and Agrobacterium tumefaciens play an important role during hypoosmotic adaptation, and the synthesis of these compounds is osmoregulated. Glucosyltransferase, the enzyme responsible for cyclic β-(1,2)-glucan biosynthesis, is present constitutively, suggesting that osmotic regulation of the biosynthesis of t
American Society for Microbiology.
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9. Mannitol, a novel bacterial compatible solute in Pseudomonas putida S12.
The aim of this study was to identify the compatible solutes accumulated by Pseudomonas putida S12 subjected to osmotic stress. In response to reduced water activity, P. putida S12 accumulated Nalpha-acetylglutaminylglutamine amide (NAGGN) simultaneously with a novel compatible solute identified as mannitol (using 13C- and 1H-nuclear magnetic resonance, liqu
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10. Corynebacterium glutamicum Is Equipped with Four Secondary Carriers for Compatible Solutes: Identification, Sequencing, and Characterization of the Proline/Ectoine Uptake System, ProP, and the Ectoine/Proline/Glycine Betaine Carrier, EctP
Gram-positive soil bacterium Corynebacterium glutamicum uses the compatible solutes glycine betaine, proline, and ectoine for protection against hyperosmotic shock. Osmoregulated glycine betaine carrier BetP and proline permease PutP have been previously characterized; we have identified and characterized two additional osmoregulated secondary transporters f
American Society for Microbiology.
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11. A novel mode of sensory transduction in archaea: binding protein-mediated chemotaxis towards osmoprotectants and amino acids
Directly upstream of the Halobacterium salinarum transducer genes basT and htpIV we identified two open reading frames (orfs) with significant homologies to genes encoding binding proteins for amino acids and compatible solutes, respectively. Behavioral testing of deletion mutants indicates that halobacterial chemotaxis towards branched-chain amino acids as
Oxford University Press.
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12. New compatible solutes related to Di-myo-inositol-phosphate in members of the order Thermotogales.
The accumulation of intracellular organic solutes was examined in six species of the order Thermotogales by nuclear magnetic resonance spectroscopy. The newly discovered compounds di-2-O-beta-mannosyl-di-myo-inositol-1,1'(3,3')-phosphate and di-myo-inositol-1,3'-phosphate were identified in Thermotoga maritima and Thermotoga neapolitana. In the latter specie