Efficacy of epiphytic bacteria to prevent northern leaf blight caused by Exserohilum turcicum in maize.

Efficacy of epiphytic bacteria to prevent northern leaf blight caused by Exserohilum turcicum in maize. Rev Argent Microbiol. 2017 Feb 07;: Authors: Sartori M, Nesci A, García J, Passone MA, Montemarani A, Etcheverry M Abstract Eight potential biological control agents (BCAs) were evaluated in planta in order to assess their effectiveness in reducing disease severity of northern leaf blight caused by Exserohilum turcicum. The assay was carried out in greenhouse. Twenty-six-day-old plants, V4 phenological stage, were inoculated with antagonists by foliar spray. Only one biocontrol agent was used per treatment. Ten days after this procedure, all treatments were inoculated with E. turcicum by foliar application. Treatments performed were: C-Et: control of E. turcicum; T1: isolate 1 (Enterococcus genus)+E. turcicum; T2: isolate 2 (Corynebacterium genus)+E. turcicum; T3: isolate 3 (Pantoea genus)+E. turcicum; T4: isolate 4 (Corynebacterium genus)+E. turcicum; T5: isolate 5 (Pantoea genus)+E. turcicum; T6: isolate 6 (Bacillus genus)+E. turcicum; T7: isolate 7 (Bacillus genus)+E. turcicum; T8: isolate 8 (Bacillus genus)+E. turcicum. Monitoring of antagonists on the phyllosphere was performed at different times. Furthermore, the percentage of infected leaves and, plant and leaf incidence were determined. Foliar application of different bacteria significantly reduced the leaf blight between 30-78% and 39-56% at 20 and 39 days respectively. It was observed t...
Source: Revista Argentina de Microbiologia - Category: Microbiology Tags: Rev Argent Microbiol Source Type: research

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Publication date: Available online 18 January 2020Source: Toxicology ReportsAuthor(s): Afaf M. Weli, Hanady S. Al-Saadi, Rouqaya S. Al-Fudhaili, Amzad Hossain, Zabida Binti Putit, Mahmood K. JasimAbstractMedicinal plant as herbal medicine is widely used to cure infectious diseases. Rubus fruticosus L (R. fruticosus) has been studied for its antimicrobial and cytotoxic activities. Different polarity leave extracts were prepared by using hexane, chloroform, ethyl acetate and hydro alcoholic solvents. Agar diffusion method has been used to assess the antibacterial activity against two gram-positive Enterococcus faecalis and S...
Source: Toxicology Reports - Category: Toxicology Source Type: research
ConclusionMicroorganisms were found in all cases referred to endodontic retreatment due to prosthetic reasons and without evidence of apical periodontitis.Enterococcus was the genus most frequently detected.Clinical significanceAn endodontic retreatment should be considered before replacing a prosthesis.
Source: Clinical Oral Investigations - Category: Dentistry Source Type: research
This study showed the natural evolution of indigenous fermented meat starter cultures and confirmed a higher suitability of horse and beef meat for nitrate/nitrite free salami production due to their hygienic quality at 30 d. PMID: 31948626 [PubMed - in process]
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research
Publication date: Available online 16 January 2020Source: Saudi Journal of Biological SciencesAuthor(s): Suresh Dhanaraj, Somanathan Thirunavukkarasu, Henry Allen John, Sridhar Pandian, Saleh H. Salmen, Arunachalam Chinnathambi, Sulaiman Ali AlharbiAbstractThe sediment marine samples were obtained from several places along the coastline of the Tuticorin shoreline, Tamil Nadu, India were separated for the presence of bioactive compound producing actinobacteria. The actinobacterial strain was subjected to 16Sr RNA sequence cluster analysis and identified as Nocardiopsis dassonvillei- DS013 NCBI accession number: KM098151. Ba...
Source: Saudi Journal of Biological Sciences - Category: Biology Source Type: research
ConclusionsBiofilm disruption and cell viability were influenced by the species, the test agent and the duration of exposure. CTAB and SDS were more effective in biofilm disruption than Tween 80 ™. Graphical depiction of biofilm disruption- and viability-outcomes provides an alternative means of simultaneously visualising and analysing relative efficacy in different domains.Clinical relevanceSurfactants were not as effective at biofilm disruption as NaOCl but may be added to other non-disruptive antibacterial agents to enhance this property.
Source: Clinical Oral Investigations - Category: Dentistry Source Type: research
Microbial Drug Resistance, Ahead of Print.
Source: Microbial Drug Resistance - Category: Microbiology Authors: Source Type: research
Publication date: 1 March 2020Source: Materials Chemistry and Physics, Volume 243Author(s): Samir Bouchareb, Rachida Doufnoune, Farid Riahi, Hafsa Cherif-Silini, Lassaad BelbahriAbstractGO-Ag nanohybrids have attracted tremendous attention thanks to their several potential properties. In this research work, a new approach was adopted, where Triphenylphosphine (PPh3) was used as a linkage to decorate the surface of Graphene oxide (GO) nanosheets by Silver nanoparticles (AgNPs) via a simple method. The Fourier transform infrared spectroscopy (FTIR), Ultraviolet–visible spectroscopy (UV–Vis), X-ray diffraction ana...
Source: Materials Chemistry and Physics - Category: Materials Science Source Type: research
Publication date: Available online 15 January 2020Source: Microbiological ResearchAuthor(s): Ashley N. Williams, John StavrinidesAbstractMulti-drug resistant Acinetobacter baumannii and Pseudomonas aeruginosa continue to pose a serious health threat worldwide. Two Pantoea agglomerans strains, 3581 and SN01080, produce an antibiotic effective against these pathogens. To identify the antibiotic biosynthetic gene clusters, independent genetic screens were conducted for each strain using a mini-Tn5 transposon, which resulted in the identification of the same conserved eight-gene cluster. We have named this antibiotic Pantoea N...
Source: Microbiological Research - Category: Infectious Diseases Source Type: research
Abstract Rice wine, a traditional fermented alcoholic beverage in China, is produced with grains such as rice, which are fermented with saccharifying starter-koji. Its flavor quality is closely associated to the starter culture-koji, which is made by mixing botanical materials with high-class glutinous rice in certain ecological context. However, there are few reports on the microbial community structure of rice wine koji. In this paper, bacterial community structures of rice wine koji were analyzed using 16S rRNA gene sequencing based on Illumina MiSeq high-throughput technology in 20 samples collected from Xiaog...
Source: Current Microbiology - Category: Microbiology Authors: Tags: Curr Microbiol Source Type: research
Authors: Escolà-Vergé L, Los-Arcos I, Almirante B Abstract One of the current priorities of the World Health Organization is multidrug-resistant bacteria, because they are a global problem due to their rapid spread and the difficulty of their treatment. In addition, they are associated with high morbidity, mortality and high economic costs. There are multidrug-resistant bacteria, both Gram-positive and Gram-negative, including Pseudomonas aeruginosa and Acinetobacter baumannii resistant to carbapenems, enterobacteria producing carbapenemases, Staphylococcus aureus resistant to methicillin and/or with ...
Source: Medicina Clinica - Category: General Medicine Tags: Med Clin (Barc) Source Type: research
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