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https://www.readbyqxmd.com/read/28930276/essential-oil-of-cymbopogon-citratus-on-the-control-of-the-curvularia-leaf-spot-disease-on-maize
#1
Dalmarcia de Sousa Carlos Mourão, Talita Ferreira de Souza Pereira, Danival José de Souza, Aloísio Freitas Chagas Júnior, Mateus Sunti Dalcin, Ronice Alves Veloso, Evelynne Urzêdo Leão, Gil Rodrigues Dos Santos
The Curvularia Leaf Spot is becoming more common due to the culture expansion and the low resistance of the cultivated genotypes in tropical regions. Thus, the objective was to evaluate the fungitoxicity of the essential oil of Cymbopogon citratus upon the phytopathogen Curvularia lunata, causative agent of the Curvularia Leaf Spot. There was realized pathogenicity tests of C. lunata in maize plants, phytotoxicity of the essential oil of C. citratus and gas chromatography attached, germination tests of the conidia, and of in vitro inhibition of C...
August 20, 2017: Medicines (Basel, Switzerland)
https://www.readbyqxmd.com/read/28867950/extracellular-alkaline-lipase-from-a-novel-fungus%C3%A2-curvularia-sp-dhe-5-optimisation-of-physicochemical-parameters-partial-purification-and-characterisation
#2
Dina Helmy El-Ghonemy, Mamdouh S El-Gamal, Amir Elsayed Tantawy, Thanaa Hamed Ali
Thirty isolated fungal strains were screened for lipase production using Phenol Red plates, containing tributyrin as lipidic substrate, and a novel fungus identified genetically as Curvularia sp. DHE 5 was found as the most prominent strain. Various agro-industrial substrates were evaluated as inert supports for lipase production in solid-state fermentation. The highest yield of lipase ((83.4±2.2) U/g on dry mass basis) was reported with wheat bran medium after seven days of fermentation at pH=7.0, temperature of 30 °C, 70% moisture content, inoculum size of 1...
June 2017: Food Technology and Biotechnology
https://www.readbyqxmd.com/read/28861773/biodegradation-of-pulp-and-paper-mill-effluent-by-co-culturing-ascomycetous-fungi-in-repeated-batch-process
#3
Deepika Rajwar, Rashmi Paliwal, J P N Rai
The competence of novel fungal consortium, consisting of Nigrospora sp. LDF00204 (accession no. KP732542) and Curvularia lunata LDF21 (accession no. KU664593), was investigated for the treatment of pulp and paper mill effluent. Fungal consortium exhibited enhanced biomass production under optimized medium conditions, i.e., glucose as carbon (C), sodium nitrate as nitrogen (N), C/N 1.5:0.5, pH 5, temperature 30 °C, and agitation 140 rpm, and significantly reduced biochemical oxygen demand (85.6%), chemical oxygen demand (80%), color (82...
August 31, 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28861045/exploring-the-potentials-of-lysinibacillus-sphaericus-za9-for-plant-growth-promotion-and-biocontrol-activities-against-phytopathogenic-fungi
#4
Zakira Naureen, Najeeb Ur Rehman, Hidayat Hussain, Javid Hussain, Syed A Gilani, Saif K Al Housni, Fazal Mabood, Abdul L Khan, Saima Farooq, Ghulam Abbas, Ahmed A Harrasi
There is an ongoing hunt for biologically active compounds that can combat phytopathogenic fungi and improve plant growth without causing any hazards to the environment. Consequently the present study aims at deciphering the plant growth promotion and antifungal capability of Lysinibacillus sphaericus ZA9. The bacterium was previously isolated and identified in our laboratory from maize rhizosphere using 16S rRNA gene sequencing. The test bacterium L. sphaericus ZA9 was found to produce high quantity of IAA (697 μg/ mL); siderophores (195...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28851884/cu-chitosan-nanoparticle-boost-defense-responses-and-plant-growth-in-maize-zea-mays-l
#5
Ram Chandra Choudhary, R V Kumaraswamy, Sarita Kumari, S S Sharma, Ajay Pal, Ramesh Raliya, Pratim Biswas, Vinod Saharan
In agriculture, search for biopolymer derived materials are in high demand to replace the synthetic agrochemicals. In the present investigation, the efficacy of Cu-chitosan nanoparticles (NPs) to boost defense responses against Curvularia leaf spot (CLS) disease of maize and plant growth promotry activity were evaluated. Cu-chitosan NPs treated plants showed significant defense response through higher activities of antioxidant (superoxide dismutase and peroxidase) and defense enzymes (polyphenol oxidase and phenylalanine ammonia-lyase)...
August 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28847019/metabolomic-guided-isolation-of-bioactive-natural-products-from-curvularia-sp-an-endophytic-fungus-of-terminalia-laxiflora
#6
Ahmed F Tawfike, Grainne Abbott, Louise Young, RuAngelie Edrada-Ebel
Endophytic fungi associated with medicinal plants are a potential source of novel chemistry and biology. Metabolomic tools were successfully employed to compare the metabolite fingerprints of solid and liquid culture extracts of endophyte Curvularia sp. isolated from the leaves of Terminalia laxiflora. Natural product databases were used to dereplicate metabolites in order to determine known compounds and the presence of new natural products. Multivariate analysis highlighted the putative metabolites responsible for the bioactivity of the fungal extract and its fractions on NF-κB and the myelogenous leukemia cell line K562...
August 28, 2017: Planta Medica
https://www.readbyqxmd.com/read/28833313/ecology-and-identification-of-environmental-fungi-and-metabolic-processes-involved-in-the-biodeterioration-of-brazilian-soapstone-historical-monuments
#7
Douglas Boniek, Isolda de Castro Mendes, Christiane Abreu Oliveira Paiva, Ubiraci Gomes de Paula Lana, Antônio Fernando Batista Dos Santos, Maria Aparecida de Resende Stoianoff
The present study aimed to evaluate the action of organic acids produced by the fungal population associated with the biodeterioration process of the Twelve Prophets of Aleijadinho, a set of soapstone sculptures in Congonhas, state of Minas Gerais, Brazil. For this, samples of fungi were obtained from the surface of each of the twelve outdoor stone sculptures that comprise the set of prophets. Identification of the colonizing filamentous fungi was performed by classical microbiology and molecular methods. Some species of filamentous fungi-dependent cultivation were detected, and the presence of species Aspergillus versicolor, Curvularia lunata, Epicoccum nigrum, Penicillium citrinum, and Pseudocercospora norchiensis indicated a connection with the excretion of organic acids...
August 20, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28832724/selection-of-alfalfa-genotypes-for-resistance-to-the-foliar-pathogen-curvularia-geniculata
#8
Mariana R Ávila, Miguel Dall'agnol, José A Martinelli, Gerarda B P DA Silva, Carolina Bremm, Tamyris Nunes
Foliar diseases impose severe restrictions on the persistence and productivity of Medicago sativa, both of which may be increased by developing disease resistant and more competitive genotypes that can improve pasture quality. We found Curvularia geniculata as the principal alfalfa foliar pathogen in the Brazilian state of Rio Grande do Sul (RS). Growth chamber experiments evaluated the resistance of alfalfa genotypes 'E1C4', 'CPPSul', 'ABT 805' and 'CUF-101' to C. geniculata as compared the control 'Crioula' genotype...
August 17, 2017: Anais da Academia Brasileira de Ciências
https://www.readbyqxmd.com/read/28793031/airborne-fungi-in-an-intensive-care-unit
#9
C L Gonçalves, F V Mota, G F Ferreira, J F Mendes, E C Pereira, C H Freitas, J N Vieira, J P Villarreal, P S Nascente
The presence of airborne fungi in Intensive Care Unit (ICUs) is associated with increased nosocomial infections. The aim of this study was the isolation and identification of airborne fungi presented in an ICU from the University Hospital of Pelotas - RS, with the attempt to know the place's environmental microbiota. 40 Petri plates with Sabouraud Dextrose Agar were exposed to an environment of an ICU, where samples were collected in strategic places during morning and afternoon periods for ten days. Seven fungi genera were identified: Penicillium spp...
July 27, 2017: Brazilian Journal of Biology, Revista Brasleira de Biologia
https://www.readbyqxmd.com/read/28771547/evaluation-of-multifarious-plant-growth-promoting-traits-antagonistic-potential-and-phylogenetic-affiliation-of-rhizobacteria-associated-with-commercial-tea-plants-grown-in-darjeeling-india
#10
Jintu Dutta, Debajit Thakur
Plant growth promoting rhizobacteria (PGPR) are studied in different agricultural crops but the interaction of PGPR of tea crop is not yet studied well. In the present study, the indigenous tea rhizobacteria were isolated from seven tea estates of Darjeeling located in West Bengal, India. A total of 150 rhizobacterial isolates were screened for antagonistic activity against six different fungal pathogens i.e. Nigrospora sphaerica (KJ767520), Pestalotiopsis theae (ITCC 6599), Curvularia eragostidis (ITCC 6429), Glomerella cingulata (MTCC 2033), Rhizoctonia Solani (MTCC 4633) and Fusarium oxysporum (MTCC 284), out of which 48 isolates were antagonist to at least one fungal pathogen used...
2017: PloS One
https://www.readbyqxmd.com/read/28761108/the-advantages-of-endophyte-infected-over-uninfected-tall-fescue-in-the-growth-and-pathogen-resistance-are-counteracted-by-elevated-co2
#11
Wei Chen, Hui Liu, Wurihan, Yubao Gao, Stuart D Card, Anzhi Ren
Atmospheric CO2 concentrations are predicted to double within the next century. Despite this trend, the extent and mechanisms through which elevated CO2 affects grass-endophyte symbionts remain uncertain. In the present study, the growth, chemical composition and pathogen resistance of endophyte-infected (E+) and uninfected (E-) tall fescue were compared under elevated CO2 conditions. The results showed that the effect of endophyte infection on the growth of tall fescue was significantly affected by elevated CO2...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28757872/production-characterization-and-antimicrobial-activity-of-mycocin-produced-by-debaryomyces-hansenii-dsmz70238
#12
Safaa A S Al-Qaysi, Halah Al-Haideri, Zaid Akram Thabit, Wijdan Hameed Abd Al-Razzaq Al-Kubaisy, Jamal Abd Al-Rahman Ibrahim
The present study was conducted to estimate the antimicrobial activity and the potential biological control of the killer toxin produced by D. hansenii DSMZ70238 against several pathogenic microorganisms. In this study, the effects of NaCl, pH, and temperature, killer toxin production, and antimicrobial activity were studied. The results showed that the optimum inhibitory effect of killer toxin was at 8% NaCl, and the diameters of clear zones were 20, 22, 22, 21, 14, and 13 mm for Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, Streptococcus pyogenes, Candida albicans, and Candida neoformans, respectively...
2017: International Journal of Microbiology
https://www.readbyqxmd.com/read/28732400/solar-photocatalytic-disinfection-of-agricultural-pathogenic-fungi-curvularia-sp-in-real-urban-wastewater
#13
Yelitza Aguas, Margarita Hincapie, Pilar Fernández-Ibáñez, María Inmaculada Polo-López
The interest in developing alternative water disinfection methods that increase the access to irrigation water free of pathogens for agricultural purposes is increasing in the last decades. Advanced Oxidation Processes (AOPs) have been demonstrated to be very efficient for the abatement of several kind of pathogens in contaminated water. The purpose of the current study was to evaluate and compare the capability of several solar AOPs for the inactivation of resistant spores of agricultural fungi. Solar photoassisted H2O2, solar photo-Fenton at acid and near-neutral pH, and solar heterogeneous photocatalysis using TiO2, with and without H2O2, have been studied for the inactivation of spores of Curvularia sp...
December 31, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28722254/determination-of-irritant-threshold-concentrations-of-multiple-tree-grass-weed-and-mould-allergens-for-intradermal-testing-of-horses-residing-in-the-southern-usa
#14
Martha J Lane, Cherie M Pucheu-Haston, Michael T Kearney, Michelle Woodward
BACKGROUND: Appropriate allergen threshold concentrations (TCs) for intradermal testing (IDT) have not been established in horses for many pollen and mould allergens. OBJECTIVES: To determine the TCs in non-allergic horses and describe the frequency of late phase reactions for 26 allergens, including trees, grasses, weeds and moulds in horses residing in the southern Unites States. ANIMALS: Twenty four clinically normal horses in the southern United States...
July 18, 2017: Veterinary Dermatology
https://www.readbyqxmd.com/read/28663602/genera-of-phytopathogenic-fungi-gophy-1
#15
Y Marin-Felix, J Z Groenewald, L Cai, Q Chen, S Marincowitz, I Barnes, K Bensch, U Braun, E Camporesi, U Damm, Z W de Beer, A Dissanayake, J Edwards, A Giraldo, M Hernández-Restrepo, K D Hyde, R S Jayawardena, L Lombard, J Luangsa-Ard, A R McTaggart, A Y Rossman, M Sandoval-Denis, M Shen, R G Shivas, Y P Tan, E J van der Linde, M J Wingfield, A R Wood, J Q Zhang, Y Zhang, P W Crous
Genera of Phytopathogenic Fungi (GOPHY) is introduced as a new series of publications in order to provide a stable platform for the taxonomy of phytopathogenic fungi. This first paper focuses on 21 genera of phytopathogenic fungi: Bipolaris, Boeremia, Calonectria, Ceratocystis, Cladosporium, Colletotrichum, Coniella, Curvularia, Monilinia, Neofabraea, Neofusicoccum, Pilidium, Pleiochaeta, Plenodomus, Protostegia, Pseudopyricularia, Puccinia, Saccharata, Thyrostroma, Venturia and Wilsonomyces. For each genus, a morphological description and information about its pathology, distribution, hosts and disease symptoms are provided...
March 2017: Studies in Mycology
https://www.readbyqxmd.com/read/28578573/antifungal-and-antiviral-cyclic-peptides-from-the-deep-sea-derived-fungus-simplicillium-obclavatum-eiodsf-020
#16
Xiao Liang, Xu-Hua Nong, Zhong-Hui Huang, Shu-Hua Qi
A new linear peptide simplicilliumtide I (1) and four new cyclic peptides simplicilliumtides J-M (2-5) together with known analogues verlamelins A and B (6 and 7) were isolated from the deep-sea-derived fungal strain Simplicillium obclavatum EIODSF 020. Their structures were elucidated by spectroscopic analysis, and their absolute configurations were further confirmed by chemical structural modification, Marfey's and Mosher's methods. Compounds 2, 6, and 7 showed significant antifungal activity toward Aspergillus versicolor and Curvularia australiensis and also had obvious antiviral activity toward HSV-1 with IC50 values of 14...
June 28, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28573998/corneal-ulcer-due-to-a-rare-pleosporalean-member-of-the-genus-bipolaris-following-cow-tail-injury-to-the-eye-a-case-report-and-review-of-literature
#17
REVIEW
H Vijaya Pai, Esha Jamal, Prakash Peralam Yegneswaran
Aspergillus and Fusarium are the most common fungi causing mycotic keratitis. Injury to the eye with vegetable matter, cow tail injury, long-term use of topical steroids are some of the risk factors for mycotic keratitis. There are few case reports of keratitis caused by Bipolaris. The human pathogenic species in the genus are Bipolaris spicifera, Bipolaris hawaiiensis, Bipolaris papendorfii, and Bipolaris australiensis. Most commonly reported keratitis is caused by B. hawaiiensis, followed by B. spicifera...
May 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28548142/halofunctionalization-of-alkenes-by-vanadium-chloroperoxidase-from-curvularia-inaequalis
#18
Jia Jia Dong, Elena Fernández-Fueyo, Jingbo Li, Zheng Guo, Rokus Renirie, Ron Wever, Frank Hollmann
The vanadium-dependent chloroperoxidase from Curvularia inaequalis is a stable and efficient biocatalyst for the hydroxyhalogenation of a broad range of alkenes into halohydrins. Up to 1 200 000 TON with 69 s(-1) TOF were observed for the biocatalyst. A bienzymatic cascade to yield epoxides as reaction products is presented.
June 6, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28480570/in-vitro-antifungal-probiotic-and-antioxidant-functional-properties-of-a-novel-lactobacillus-paraplantarum-isolated-from-fermented-dates-in-saudi-arabia
#19
Mariadhas Valan Arasu, Naif Abdullah Al-Dhabi
BACKGROUND: Fermented foods produced using dates are used in Gulf countries as beneficial and healthful foods. The beneficial microbial flora in fermented dates contributes to maintaining the nutritional properties of dates by preventing the growth of spoilage fungi. Here, we examined the antifungal, probiotic, and antioxidant properties of the novel Lactobacillus strain D-3 isolated from fermented dates. RESULTS: Analyzing the morphological, physiological, and biochemical characteristics of this strain demonstrated that it was similar to Lactobacillus species, and molecular level amplification of the 16S rRNA gene showed that it belonged to Lactobacillus paraplantarum...
May 8, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/28417063/melanized-fungus-as-an-epidural-abscess-a-diagnostic-and-therapeutic-challenge
#20
Adesh Shrivastava, Karuna Tadepalli, Garima Goel, Kajal Gupta, Pradeep Kumar Gupta
Curvularia a dematiaceous fungus is ubiquitously found in soil around the world. We report an epidural abscess due to Curvularia lunata in a 48 years male farmer who underwent decompressive laminectomy as primary modality of treatment followed by isolation, identification and confirmation of the isolate from tissue by ITS sequencing. Antifungal therapy with voriconazole and amphotericin B for 3 and 2 weeks respectively improved patient's condition and is presently on regular follow up with no sequelae since last 7 months...
June 2017: Medical Mycology Case Reports
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