Salt-affected soils are generally classified into two main categories: saline and sodic (alkaline). Developing and using soybean (Glycine max (L.) Merr) cultivars with high salt tolerance is an effective way of maintaining sustainable production in areas where soybean growth is threatened by salt stress. Early classical genetics studies revealed that saline tolerance was conditioned by a single...

Sulphate-reducing bacteria (SRB) are dominant species causing corrosion of various types materials. However, they also play a beneficial role in bioremediation due to their tolerance extreme pH conditions. The application sulphate-reducing and control methods for microbiologically influenced (MIC) environments requires an understanding the microbial activities these Recent studies have found th...

BACKGROUND AND AIMS Crassulacean acid metabolism (CAM) is currently viewed as an adaptation to water deficit. In plants of Clusia minor, which grow mostly on acidic, P-deficient soils, CAM is induced by water deficit. The symbiosis between plants and mycorrhizal fungi alleviates the symptoms of P deficiency and may influence drought resistance. Therefore, the effect of P supply, modified by thr...

Acid tolerance of the lactic acid bacterium (LAB) is crucially important for production free as a chemical monomer by simplified purification steps. This study conducts both metabolic modification and adaptive evolution approaches on increasing an engineered Pediococcus acidilactici strain. The overexpression genes encoding lactate dehydrogenase, recombinase, chaperone, glutathione ATPase did n...

We tested the hypothesis that the asymptote of the hyperbolic relationship between work rate and time to exhaustion during muscular exercise, the "critical power" (CP), represents the highest constant work rate that can be sustained without a progressive loss of homeostasis [as assessed using (31)P magnetic resonance spectroscopy (MRS) measurements of muscle metabolites]. Six healthy male subje...

In the present investigation Saccharomyces cerevisiae was isolated from Toddy and identified by based on morphological and sugar fermentation tests. In alcohol tolerance test, Saccharomyces cerevisiae tolerate up to 15% of ethanol in the medium. Optimize the culture conditions of yeast strain such as initial sugar concentration, pH, temperature and incubation period on ethanol production was al...

The food-borne pathogen Listeria monocytogenes can acquire enhanced resistance to lethal acid conditions through multiple mechanisms. We investigated contributions of the stress-responsive alternative sigma factor, sigma(B), which is encoded by sigB, to growth phase-dependent acid resistance (AR) and to the adaptive acid tolerance response in L. monocytogenes. At various points throughout growt...

Severe-intensity constant-work-rate exercise results in the attainment of maximal oxygen uptake, but the muscle metabolic milieu at the limit of tolerance (T(lim)) for such exercise remains to be elucidated. We hypothesized that T(lim) during severe-intensity exercise would be associated with the attainment of consistently low values of intramuscular phosphocreatine ([PCr]) and pH, as determine...

The eastern oyster Crassostrea virginica has a remarkable ability to withstand low oxygen conditions; however, many of the biochemical mechanisms by which that tolerance is accomplished remain poorly understood. In addition, little is known about hypoxia tolerances and adaptations of the Asian oyster Crassostrea ariakensis. By comparing these closely related species, we may learn more about the...

Aphanothece halophytica is a halotolerant alkaliphilic cyanobacterium which can grow in media of up to 3.0 M NaCl and pH 11. This cyanobacterium can synthesize betaine from glycine by three-step methylation using S-adenosylmethionine as a methyl donor. To unveil the mechanism of betaine uptake and efflux in this alkaliphile, we isolated and characterized a betaine transporter. A gene encoding a...