The mammalian gastrointestinal tract and bloodstream are highly disparate biological niches that differ in concentrations of nutrients such as iron. However, some commensal-pathogenic microorganisms, such as the yeast Candida albicans, thrive in both environments. We report the evolution of a transcription circuit in C. albicans that controls iron uptake and determines its fitness in both niche...

Listeria monocytogenes is a food-borne pathogen that can persist in food processing plants by forming biofilms on abiotic surfaces. The benefits that bacteria can gain from living in a biofilm, i.e., protection from environmental factors and tolerance to biocides, have been linked to the biofilm structure. Different L. monocytogenes strains build biofilms with diverse structures, and the underl...

In two experiments, radioactively labelled nutrients (either (3)H-labelled amino-acid mixture or (14)C-labelled glucose) were tube-fed to brooding male Syngnathus typhle. Both nutrients were taken up by the males and radioactivity generally increased in the brood pouch tissue with time. Furthermore, a low but significant increase of (3)H-labelled amino acids in embryos was found over the experi...

Factsheet Fatty Acids EN Rev. 01 All copyrights: DSGIP Life-SMS Project 2014/2015 Roles of fatty acids:  integral part of the cellular membrane  main component of the myelin sheath of the nerves  providers and storage of nutritional energy  regulation of body temperature (isolation)  uptake, storage and providing of liposoluble vitamins (A (also conversion from β-Carotin ), D3, E, K  enha...

Demand of all living organisms on the same nutrients forms the basis for interspecific competition between plants and microorganisms in soils. This competition is especially strong in the rhizosphere. To evaluate competitive and mutualistic interactions between plants and microorganisms and to analyse ecological consequences of these interactions, we analysed 424 data pairs from 41 (15)N-labell...

The high rates of N2 fixation observed in the Western Tropical Atlantic Ocean are powered, at least parts, by large influx nutrients from Amazon River. To disentangle impact on different factors controlling region, we use a high-resolution regional model (Regional Oceanic Modeling System-Biogeochemical Elemental Cycling model) that includes two diazotrophic phytoplankton classes (Trichodesmium ...

Porins mediate the uptake of nutrients across the outer membrane of Gram-negative bacteria. For general porins like OmpF, electrophysicoloigcal experiments now establish that the charged residues within their channels primarily modulate pore selectivity, rather than voltage-gated switching between open and closed states. Recent studies on the maltoporin, LamB, solidify the importance of its 'gr...

Rice is known to be a nutrient exhaustive crop and the application of silicon (Si) has been reported for better utilization plant nutrients from soil. Hence, response phosphorus (P) could enhanced by co-fertilization Si P. The present study evaluates dry matter accumulation, grain yield, uptake, nutrient-use efficiency P in aerobic rice. Therefore, field experiment was conducted at ICAR-Indian ...

Although rarely acknowledged, our understanding of how competition is modulated by environmental drivers is severely hampered by our dependence on indirect measurements of outcomes, rather than the process of competition. To overcome this, we made direct measurements of plant competition for soil nitrogen (N). Using isotope pool-dilution, we examined the interactive effects of soil resource lim...

The enteric disease coccidiosis, caused by the unicellular parasite Eimeria, is a major and reoccurring problem for the poultry industry. While the molecular machinery driving host cell invasion and oocyst wall formation has been well documented in Eimeria, relatively little is known about the host cell modifications which lead to acquisition of nutrients and parasite growth. In order to unders...