Advertisement

Topics

The role of nitrogen uptake on the competition ability of three vineyard Saccharomyces cerevisiae strains.

08:00 EDT 13th July 2017 | BioPortfolio

Summary of "The role of nitrogen uptake on the competition ability of three vineyard Saccharomyces cerevisiae strains."

Three vineyard strains of Saccharomyces cerevisiae, P301.4, P304.4 and P254.12, were assayed in comparison with a commercial industrial strain, QA23. The aim was to understand if nitrogen availability could influence strain competition ability during must fermentation. Pairwise-strain fermentations and co-fermentations with the simultaneous presence of the four strains were performed in synthetic musts at two nitrogen levels: control nitrogen condition (CNC) that assured the suitable assimilable nitrogen amount required by the yeast strains to complete the fermentation and low nitrogen condition (LNC) where nitrogen is present at very low level. Results suggested a strong involvement of nitrogen availability, as the frequency in must of the vineyard strains, respect to QA23, in LNC was always higher than that found in CNC. Moreover, in CNC only strain P304.4 reached the same strain frequency as QA23. P304.4 competition ability increased during the fermentation, indicating better performance when nitrogen availability was dropping down. P301.4 was the only strain sensitive to QA23 killer toxin. In CNC, when it was co-inoculated with the industrial strain QA23, P301.4 was never detected. In LNC, P301.4 after 12h accounted for 10% of the total population. This percentage increased after 48h (20%). Single-strain fermentations were also run in both conditions and the nitrogen metabolism further analyzed. Fermentation kinetics, ammonium and amino-acid consumptions and the expression of genes under nitrogen catabolite repression evidenced that vineyard yeasts, and particularly strain P304.4, had higher nitrogen assimilation rate than the commercial control. In conclusion, the high nitrogen assimilation rate seems to be an additional strategy that allowed vineyard yeasts successful competition during the growth in grape musts.

Affiliation

Journal Details

This article was published in the following journal.

Name: International journal of food microbiology
ISSN: 1879-3460
Pages: 1-11

Links

DeepDyve research library

PubMed Articles [17446 Associated PubMed Articles listed on BioPortfolio]

The Uncoupled Assimilation of Carbon and Nitrogen from Urea and Glycine by the Bloom-forming Dinoflagellate Prorocentrum minimum.

The spread of harmful dinoflagellate blooms has been linked to the increasing availability of nitrogen, including its dissolved organic forms. The relationships between organic and inorganic nutrient ...

Effect of Temperature on PAO Activity and Substrate Competition.

To investigate the effect of temperature on the activity of high-temperature phosphate accumulating organisms (PAO) and their competitive ability for the substrate, the sludge from an enhanced biologi...

Effects of Wastewater Nitrogen Concentrations and NH/NO on Nitrogen Removal Ability and the Nitrogen Component of (Vell.) Verdc.

Solution culture experiments were conducted to investigate the effect of wastewater nitrogen levels and NH/NO on nitrogen removal ability and the nitrogen component of . Experiments with three nitroge...

Uptake of bacteria into living plant cells, the unifying and distinct feature of the nitrogen-fixing root nodule symbiosis.

Despite the presence of complex microbiota on the surfaces of all plants, the uptake of bacteria into plant cells and the subsequent accommodation in a membrane-enclosed compartment is restricted to t...

Physiological Characteristics and Nitrogen and Phosphorus Uptake of Under High Ammonium Conditions.

Ammonium nitrogen (NH-N) at high concentrations is toxic to plants. In order to explore the NH-N tolerance of () and its ability of nitrogen (N) and phosphorus (P) uptake, this study used a nutrient ...

Clinical Trials [4214 Associated Clinical Trials listed on BioPortfolio]

Effect of Oral Probiotic Yeast on the Composition of the Vaginal Microbiota in Healthy Women

This study is designed to evaluate the impact of oral consumption of the probiotic yeast CNCM I-3856 on healthy vaginal microbiota

The Impact of Low Calorie and Low Nitrogen Parenteral Nutrition Support on the Clinical Outcome of Postoperative Patients

The study is designed to investigate the influence of parenteral nutrition (PN) with low nitrogen and calorie supply on the clinical outcome of patients after an operation compared to that...

A Trial Examining the Treatment of Common Warts With Combination Liquid Nitrogen (LN2) and Cantharidin

The purpose of the study was to see if liquid nitrogen, a commonly used treatment for warts, is more effective if it is used alone, or if it is more effective if combined with cantharidin,...

CRYOBEAUTY MAINS ET DECOLLETE VS LIQUID NITROGEN CRYOTHERAPY IN THE TREATMENT OF SOLAR LENTIGINES

This study evaluates the performance of new technology "CRYOTHERAPY MAINS ET DECOLLETE" against a classic cryotherapy "Nitrogen Liquid " to treat solar lentigines. The hands and the neckl...

Hyperproteic Nutrition:Correlation of BUN to Nitrogen Balance

This study is designed to determine if the following are true. When protein requirements exceed metabolic requirements, blood urea nitrogen(BUN) levels will rise. Elevated BUN levels in t...

Medical and Biotech [MESH] Definitions

A species of Saccharomyces that is used as a PROBIOTIC, such as in the treatment of DIARRHEA and PSEUDOMEMBRANOUS ENTEROCOLITIS associated with CLOSTRIDIUM INFECTIONS.

A species of the genus SACCHAROMYCES, family Saccharomycetaceae, order Saccharomycetales, known as "baker's" or "brewer's" yeast. The dried form is used as a dietary supplement.

Drugs that inhibit the transport of neurotransmitters into axon terminals or into storage vesicles within terminals. For many transmitters, uptake determines the time course of transmitter action so inhibiting uptake prolongs the activity of the transmitter. Blocking uptake may also deplete available transmitter stores. Many clinically important drugs are uptake inhibitors although the indirect reactions of the brain rather than the acute block of uptake itself is often responsible for the therapeutic effects.

A member of the Rho family of MONOMERIC GTP-BINDING PROTEINS from SACCHAROMYCES CEREVISIAE. It is involved in morphological events related to the cell cycle. This enzyme was formerly listed as EC 3.6.1.47.

Proteins obtained from the species SACCHAROMYCES CEREVISIAE. The function of specific proteins from this organism are the subject of intense scientific interest and have been used to derive basic understanding of the functioning similar proteins in higher eukaryotes.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article