scholarly journals Growth Promoting and Stabilizing of Cucumber Plants Cultivated in Soilless Cultivation Systems Using Biostimulators

2021 ◽  
Author(s):  
Michael Henry Böhme
Keyword(s):  
Temperature Stress ◽  
Ph Value ◽  
Growth Conditions ◽  
Cucumber Plant ◽  
Growth Promoters ◽  
Cultivation Systems ◽  
Stress Prevention ◽  
Soilless Cultivation ◽  
Growth Promoting ◽  
Short Time

Cultivation of cucumber in greenhouses is predominantly carried out in soilless cultivation systems mainly in substrate culture. The use of organic and completely compostable substrates is of rising interest in such systems, unclean sheep wool was formed as substrate slabs, peat slabs and coconut fiber slabs were compared with mineral substrates rockwool and perlite. In general can be stated, intensively in greenhouses cultivated crops such as cucumbers, suffer often from inadequate abiotic or biotic growth conditions in particular in the rhizosphere. Many studies were done to find growth promoters or biostimulators to stabilize the growing condition in the rhizosphere, in case of stress situation as fluctuating salt concentration EC and pH value, but also in case of temperature stress. K-Humate, Lactate and Bacillus subtilis were investigated as biostimulators in such situations. Different concentration and combination of these biostimulators were investigated but also the methods of application on leaves and roots respectively. Very successful was used for the stabilization of the EC value for cucumber plants growing in substrate the application of K-Humate and B. subtilis (FZB24®) as single component and combined. Following the results, it can be assumed, the application of the combined biostimulators with all substances if applied over the roots was a stimulating effect visible, whereas if applied over the leaves an inhibiting effect for cucumber plant growth. Application of the biostimulators solution with all three components BS-FZB24® (0.2%), K-Humate (0.01%), and LACTOFOL “O” (0.1%) were tested regarding their effects in case of strong but short time pH and temperature stress the growth of cucumber plants. There are a strong correlation between green biomass of treated cucumber plants and their root mass. It can be assumed that one of the effects of stress prevention through the biostimulators is primarily based on increasing root growth.

Effects of White-Rot Fungus Trametes Sp.lg-9 Treatment on Properties of Chlorine-Containing Bleaching Wastewater

2012 ◽  
Vol 550-553 ◽  
pp. 2241-2245
Author(s):  
Zhi Qiang Pang ◽  
Chao Yang ◽  
Jia Chuan Chen ◽  
Gui Hua Yang
Keyword(s):  
Ph Value ◽  
Lignin Content ◽  
Optimal Growth ◽  
Growth Conditions ◽  
Crude Enzyme ◽  
White Rot ◽  
Enzyme Treatment ◽  
White Rot Fungus ◽  
Short Time ◽  
Low Dosage

Effects of white-rot fungus Trametes sp.lg-9 treatment on properties of chlorine-containing bleaching wastewater were investigated. Trametes sp.lg-9 was cultured in chlorine-containing bleaching wastewater under optimal growth conditions, COD sharply decreased from 10740mg/l to 7811mg/l after 5 days; chroma firstly increased from 6212 degree to 7272 degree at 5 days and then declined to 5303 degree; lignin content firstly increased to 0.33 g/l and then decreased to 0.323 g/l. Separating the crude enzyme solution to treat chlorine-containing bleaching wastewater, demonstrating the suitable temperature of the crude enzyme treatment is 40 °C and the optimum pH value is 5.6. COD, chroma and lignin content of chlorine-containing bleaching wastewater can be significantly reduced by crude enzyme treatment on conditions of low dosage and short time.

The effect of epidermal growth factor, insulin and transferrin on the growth-promoting properties of serum depleted by repeated culture of postimplantation rat embryos

Development ◽  
1988 ◽  
Vol 104 (1) ◽  
pp. 137-145
Author(s):  
M.K. Pratten ◽  
A.M. Brooke ◽  
S.C. Broome ◽  
F. Beck
Keyword(s):  
Growth Factor ◽  
Epidermal Growth Factor ◽  
Growth Promoters ◽  
Small Molecular Weight ◽  
Rat Serum ◽  
Rat Embryos ◽  
Partial Restoration ◽  
Normal Rat ◽  
Epidermal Growth ◽  
Growth Promoting

Homologous serum, when repeatedly used for the culture of postimplantation rat embryos, rapidly loses its capacity to support growth and development. Replenishment of the ‘exhausted’ serum with glucose and vitamins (MEM vitamin concentrate—Flow Laboratories) together with gentle dialysis to remove small molecular weight toxic metabolites (lactate etc) fails to restore the growth-promoting properties of the serum. This suggests that ‘recycled’ serum has been depleted of specific growth-promoting factors. Such serum that has been subjected to dialysis can be completely replenished by addition of 30% normal rat serum. It is therefore probable that the growth promoters are originally present at very low concentrations and become rate limiting when serum is recycled. Many growth factors and hormones fall into this category and it is likely that a considerable number are involved when serum is ‘exhausted’ by repeated use. When insulin, epidermal growth factor or rat transferrin are added to dialysed ‘exhausted’ serum each effects a partial restoration of growth of rat embryos.

scholarly journals Analysis of Gastrointestinal Responses Revealed Both Shared and Specific Targets of Zinc Oxide and Carbadox in Weaned Pigs

Antibiotics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 463
Author(s):  
Yuan-Tai Hung ◽  
Qiong Hu ◽  
Richard J. Faris ◽  
Juanjuan Guo ◽  
Pedro E. Urriola ◽  
...  
Keyword(s):  
Zinc Supplementation ◽  
Growth Promotion ◽  
Wide Spectrum ◽  
Independent Effect ◽  
Growth Promoters ◽  
Nutrient Metabolism ◽  
Swine Industry ◽  
Weaning Pigs ◽  
Growth Promoting ◽  
Spectrum Evaluation

Antibiotics and pharmacological zinc supplementation were commonly used as growth promoters for several decades in the swine industry before being limited because of public health and environmental concerns. Further, the physiological and metabolic responses associated with their growth promotion effects are unclear. To characterize these responses induced by pharmacological zinc supplementation (2500 mg/kg) and carbadox (55 mg/kg), 192 post-weaning pigs were fed basal and test diets for 43 days. Compared with basal, pharmacological zinc and carbadox independently improved growth performance. Pharmacological zinc increased gastric mucosa thickness compared with basal zinc, while carbadox increased intestinal villus:crypt ratio compared with non-carbadox. Pharmacological zinc and carbadox independently reduced interleukin (IL)-1β concentration compared with basal zinc and non-carbadox. Pharmacological zinc increased IL-1RA:IL-1 ratio by 42% compared with basal zinc, while carbadox tended to increase the IL-10 and IL10:IL-12 ratio compared with non-carbadox. Carbadox increased fecal concentrations of histidine and lysine compared with non-carbadox. The independent effect of pharmacological zinc and carbadox on morphology and nutrient metabolism, and their shared effect on immunity may contribute to the additive effect on growth promotion. These results further confirmed the concept that growth promotion is multifactorial intervention. Therefore, elucidating growth-promoting effects and searching for alternatives should include wide-spectrum evaluation.

scholarly journals Influence of Environmental Growth Factors on the Biomass and Pigment Production of Chlorociboria aeruginascens

2019 ◽  
Vol 5 (2) ◽  
pp. 46 ◽  
Author(s):  
Stephanie Stange ◽  
Susanne Steudler ◽  
Hubertus Delenk ◽  
Anett Werner ◽  
Thomas Walther ◽  
...  
Keyword(s):  
Growth Factors ◽  
Organic Semiconductors ◽  
Ph Value ◽  
Fungal Growth ◽  
Soft Rot ◽  
Growth Conditions ◽  
Pigment Production ◽  
Biomass Growth ◽  
Oxygen Level ◽  
Green Pigment

The soft rot fungus Chlorociboria aeruginascens produces a blue–green pigment xylindein, which is of considerable interest for various applications such as in the veneer industry or in organic semiconductors. To understand the fungal growth as well as pigment production of C. aeruginascens, several studies were performed, the results of which are presented here. These studies investigated various growth conditions such as temperature, pH value, oxygen level and light intensity. It was observed that the formation of xylindein by C. aeruginascens decoupled from growth. In the primary metabolismus, the uncolored biomass is formed. Pigment production took place within the secondary metabolism, while biomass growth as well as pigment production depended on various growth conditions. It was also found that certain conditions encourage the switch in metabolism, leading to pigment production.

Evaluation of biofilm performance as a protective barrier against biocorrosion using an enzyme electrode

2011 ◽  
Vol 64 (8) ◽  
pp. 1736-1742 ◽  
Author(s):  
S. Soleimani ◽  
B. Ormeci ◽  
O. B. Isgor ◽  
S. Papavinasam
Keyword(s):  
Escherichia Coli ◽  
Growth Conditions ◽  
Microbiologically Influenced Corrosion ◽  
Simple Method ◽  
E Coli ◽  
Concrete Deterioration ◽  
Protective Barrier ◽  
Microbial Biofilms ◽  
Short Time ◽  
Selection Of

Sulfide is known to be an important factor in microbiologically influenced corrosion (MIC) of metals and concrete deterioration in wastewater treatment structures and sewer pipelines. A sulfide biosensor was used to determine the effectiveness of Escherichia coli DH5α biofilm as a protective barrier against MIC. The biofilm was shown to be effective in protecting surfaces from sulfide and helping to reduce MIC using amperometric measurements. The results also indicated that the growth conditions of E. coli DH5α may have an impact on the performance of the biofilm as a sulfide barrier. The simple method provided in this work enables the comparison of several microbial biofilms and selection of the ones with potential to prevent MIC in a relatively short time.

Foam Glass for Soilless Cultivation Matrix Prepared by Using Boron Mud

2013 ◽  
Vol 455 ◽  
pp. 106-111
Author(s):  
Yan Yan Jiang ◽  
Ya Nan Li ◽  
Ji Wen Zhang ◽  
Qiao Yu ◽  
Zhi Qiang Hu ◽  
...  
Keyword(s):  
Immersion Time ◽  
Absorption Rate ◽  
Ph Value ◽  
Foam Glass ◽  
Foaming Agents ◽  
Preparation Conditions ◽  
Soilless Cultivation ◽  
Foaming Temperature ◽  
Boron Mud ◽  
Foaming Time

Foam glass was prepared by boron mud, broken glass, foaming agents and fluxes. The appropriate foaming temperature and foaming time were got by sintering parameter optimization. The effects of preparation conditions on propertis of the foam glass for soilless cultivation matrix were investigated. The results show that under the optimum preparation conditions (the foaming temperature is 800 °C and foaming time is 40 min), the formula for boron mud/broken glass: Borax: Sodium nitrate: Calcium carbonate is 35/50: 5:7:3, the bulk density is 247 kg/m3, the open porosity is 70%, the water absorption rate is 202.3%, the pH value of soak solution keeps at about 6.5 with the increase of immersion time. All of these will meet the application requirement of soilless cultivation.

scholarly journals Identification of phosphate-solubilizing microorganisms and determination of their phosphate-solubilizing activity and growth-promoting capability

BioResources ◽  
2020 ◽  
Vol 15 (2) ◽  
pp. 2560-2578 ◽  
Author(s):  
Ying-Ying Wang ◽  
Pei-Shan Li ◽  
Bi-Xian Zhang ◽  
Yan-Ping Wang ◽  
Jing Meng ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Phosphorus Content ◽  
Ph Value ◽  
Inverse Correlation ◽  
Penicillium Oxalicum ◽  
Fermentation Time ◽  
Soluble Phosphorus ◽  
Growth Promoting ◽  
Phosphate Solubilizing ◽  
Solubilizing Activity

Phosphate-solubilizing microorganisms have been considered as a novel alternative approach to provide phosphate fertilizers that promote plant growth. In this study, three strains were isolated and identified as Penicillium oxalicum FJG21, Penicillium oxalicum FJQ5, and Bacillus subtilis BPM12, with a relatively high phosphate-solubilizing activity. Various phosphate sources were investigated, and Ca3(PO4)2 was identified as the effective phosphate source. Factors governing the phosphate-solubilizing activity of the strains included carbon and nitrogen sources, initial pH, and fermentation time. A high soluble phosphorus content was achieved with 529.0 μg·mL-1, 514.0 μg·mL-1, and 330.7 μg·mL-1 for Penicillium oxalicum FJG21, Penicillium oxalicum FJQ5, and Bacillus subtilis BPM12, respectively. An inverse correlation of the quantity of soluble phosphorus content and the pH value of the medium was observed. In addition, Bacillus subtilis BPM12 displayed a prominent capability of producing indole acetic acid. Penicillium oxalicum FJG21 and Penicillium oxalicum FJQ5 exhibited high cellulase activities. These phosphate-solubilizing microorganisms with good phosphate-solubilizing capability and growth-promoting ability are the promising strains for agricultural utilization.

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