Post-mining Nutrient Depletion of Bauxite Overburdens in Jamaica: Storage Methods or Subsoil Dilution?

Different seed storage methods, varying in storage temperature, moisture and/or oxygen content, were applied to commercial sugar beet seed lots from four breeding companies. After storage for 10–11 months, germination of the seed was tested in the laboratory (cold test, 10°C). In addition, the contents of active ingredients (fungicides and insecticide) were analyzed and compared with the initial contents before storage. Based on these results, a selection of the most promising storage methods was made to test plant emergence in a field experiment. This research was performed in 2015/16 and in 2016/17. In both years, two storage treatments outperformed the others: these were storage in a closed jar with the addition of moisture absorber (i.e. silica gel) at room temperature and storage at –18°C in a closed plastic bag. Using these two storage methods, seed vigour and contents of active ingredients were comparable to those in seed that had not been stored for one year. Based on the results from this study, the advice to growers for a successful storage of residual sugar beet seed was adjusted in 2017, after including some practical guidelines and considerations.

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Influence of Packaging Materials and Storage Methods on Some Cooking and Eating Quality Characteristics for Some Rice Varieties.

Journal of Plant Production ◽

10.21608/jpp.2017.39987 ◽

2017 ◽

Vol 8 (3) ◽

pp. 405-409

Author(s):

A. Khatab

Keyword(s):

Quality Characteristics ◽

Eating Quality ◽

Packaging Materials ◽

Rice Varieties ◽

Storage Methods ◽

Cooking And Eating Quality ◽

And Storage

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TOR and MAP kinase pathways synergistically regulate autophagy in response to nutrient depletion in fission yeast

Autophagy ◽

10.1080/15548627.2021.1935522 ◽

2021 ◽

pp. 1-16

Author(s):

Cristina Corral-Ramos ◽

Rubén Barrios ◽

José Ayté ◽

Elena Hidalgo

Keyword(s):

Map Kinase ◽

Fission Yeast ◽

Nutrient Depletion ◽

Map Kinase Pathways

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The Deltah Lab, a New Multidisciplinary European Facility to Support the H2 Distribution & Storage Economy

Applied Sciences ◽

10.3390/app11073272 ◽

2021 ◽

Vol 11 (7) ◽

pp. 3272

Author(s):

Sara Stelitano ◽

Alberto Rullo ◽

Luigi Piredda ◽

Elisabetta Mecozzi ◽

Luigi Di Vito ◽

...

Keyword(s):

Storage Capacity ◽

Renewable Energy Sources ◽

Energy System ◽

System Transformation ◽

Life Tests ◽

Storage Methods ◽

Complementary Techniques ◽

H2 Effect ◽

Empty Condition ◽

New Facility

The target for European decarburization encourages the use of renewable energy sources and H2 is considered the link in the global energy system transformation. So, research studies are numerous, but only few facilities can test materials and components for H2 storage. This work offers a brief review of H2 storage methods and presents the preliminary results obtained in a new facility. Slow strain rate and fatigue life tests were performed in H2 at 80 MPa on specimens and a tank of AISI 4145, respectively. Besides, the storage capacity at 30 MPa of a solid-state system, they were evaluated on kg scale by adsorption test. The results have shown the H2 influence on mechanical properties of the steel. The adsorption test showed a gain of 26% at 12 MPa in H2 storage with respect to the empty condition. All samples have been characterized by complementary techniques in order to connect the H2 effect with material properties.

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Nutritional Regulation of the Sae Two-Component System by CodY inStaphylococcus aureus

Journal of Bacteriology ◽

10.1128/jb.00012-18 ◽

2018 ◽

Vol 200 (8) ◽

Cited By ~ 14

Author(s):

Kevin D. Mlynek ◽

William E. Sause ◽

Derek E. Moormeier ◽

Marat R. Sadykov ◽

Kurt R. Hill ◽

...

Keyword(s):

Gene Expression ◽

Virulence Factors ◽

Virulence Gene ◽

Nutrient Depletion ◽

Global Regulator ◽

Two Component System ◽

Component System ◽

Content Type ◽

Virulence Gene Expression ◽

Two Component

ABSTRACTStaphylococcus aureussubverts innate defenses during infection in part by killing host immune cells to exacerbate disease. This human pathogen intercepts host cues and activates a transcriptional response via theS. aureusexoprotein expression (SaeR/SaeS [SaeR/S]) two-component system to secrete virulence factors critical for pathogenesis. We recently showed that the transcriptional repressor CodY adjusts nuclease (nuc) gene expression via SaeR/S, but the mechanism remained unknown. Here, we identified two CodY binding motifs upstream of thesaeP1 promoter, which suggested direct regulation by this global regulator. We show that CodY shares a binding site with the positive activator SaeR and that alleviating direct CodY repression at this site is sufficient to abrogate stochastic expression, suggesting that CodY repressessaeexpression by blocking SaeR binding. Epistasis experiments support a model that CodY also controlssaeindirectly through Agr and Rot-mediated repression of thesaeP1 promoter. We also demonstrate that CodY repression ofsaerestrains production of secreted cytotoxins that kill human neutrophils. We conclude that CodY plays a previously unrecognized role in controlling virulence gene expression via SaeR/S and suggest a mechanism by which CodY acts as a master regulator of pathogenesis by tying nutrient availability to virulence gene expression.IMPORTANCEBacterial mechanisms that mediate the switch from a commensal to pathogenic lifestyle are among the biggest unanswered questions in infectious disease research. Since the expression of most virulence genes is often correlated with nutrient depletion, this implies that virulence is a response to the lack of nourishment in host tissues and that pathogens likeS. aureusproduce virulence factors in order to gain access to nutrients in the host. Here, we show that specific nutrient depletion signals appear to be funneled to the SaeR/S system through the global regulator CodY. Our findings reveal a strategy by whichS. aureusdelays the production of immune evasion and immune-cell-killing proteins until key nutrients are depleted.

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