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Search Results: 1 - 10 of 4249 matches for " Aspergillus spp. Fusarium anthophellum "
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Fungal Parasites of Root-knot Nematodes
Amer-Zareen,Imran Ali Siddiqui,M. Javed Zaki
Pakistan Journal of Biological Sciences , 2000,
Abstract: A total of 28 species belonging to 16 genera of fungi parasitic on root-knot nematodes were isolated and identified. Aspergillus terreus, A. nidulans, A. tamarri and Fusarium anthophellum are appeared to be new report on root-knot nematode and not reported hitherto. Of the fungi isolated, Aspergillus flavus, A. fumigatus, A. niger, Aspergillus sp., Acremonium butyri, Alternaria alternata, Catenaria sp. Cephalosporium sp., Cladosporium cladosporoides, Cladosporium sp., Cunninghamella elegance, Curvularia lunata, Fusarium exosporium, Fusarium sp., Ulocladium atrum and a sterile fungus are new records on root-knot nematodes in Pakistan. Natural infestation of Paecilomyces lilacinus and Arthrobotrys sp. is also recorded first time from Pakistan.
Desempenho de estratégias de aera??o de milho armazenado: Fungos e condutividade elétrica
Nascimento, Vania R. G.;Queiroz, Marlene R. de;Marchi, Vanessa C.;Aguiar, Rosa H.;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2012, DOI: 10.1590/S1415-43662012000100015
Abstract: the aim of this study was to evaluate and to compare the performance of three aeration strategies for stored corn as for occurrence of molds and electrical conductivity of grain: continuous aeration; night aeration and aeration under equilibrium moisture content conditions between the grains and the ambient air. two tests of aeration with dry corn grain (11% w.b.) and wet corn (17% w.b.) were done. grain samples were taken during testing for counting of molds and measuring of electrical conductivity of grains. wet corn stored had increased incidence of molds more than dry corn stored. it was observed that the fusarium spp. showed higher scores, penicillium spp. showed development and aspergillus spp. occurred with lesser frequency. aeration strategies employed did not affect the electrical conductivity of corn stored because there was no significant difference in electrical conductivity values between the aerated grain and non-aerated grains.
The activity of galanga (Alpinia galanga) rhizome extract against the growth of filamentous fungi Aspergillus spp. that produce aflatoxin and Fusarium moniliforme
Biodiversitas , 2008,
Abstract: Galanga (Alpinia galanga L.) rhizome was known to inhibit the growth of pathogenic fungi. The antifungal substances of galangal rhizome were found from their volatile oil. The objectives of this experiment were to study the ethanol extract of galangal rhizome against the growth of filamentous fungi Fusarium moniliforme, Aspergillus flavus, Aspergillus terreus, and Aspergillus niger that produce mycotoxin, especially aflatoxin, based on biomass and colony area and to determinate minimum growth inhibitory concentration the extract of galangal rhizome. The extract of galangal rhizome was significant (p<0.05) effective against biomass of F. moniliforme and A. flavus. The extract of galangal rhizome however was significant (p<0.05) effective against colony area of F. moniliforme, A. flavus and A. niger. The minimum growth inhibitory concentration of extracts galangal rhizome against the growth of A. flavus, F. moniliforme and A. niger were 816, 1,682, and 3,366 mg/L repectively.
Molecular identification of mango malformation pathogens in Egypt  [PDF]
Wafaa M Haggag, M Hazza, M. M Saker, M. Abd El-Wahab
Advances in Bioscience and Biotechnology (ABB) , 2011, DOI: 10.4236/abb.2011.24033
Abstract: Diagnostic tests by molecular biology is made for studying the relations among Fusarium species for linking production of proteins, degree of relationship and occurrence of malformation. Determination of proteins for isolates causing-disease by SDS-PAGE explained there’s specific band for each fungus and there are common bands among some isolates of fungi. Since, band with MW 30 KDa represented only in F. proliferatum and F. oxysporum and F. subglutinans respectively. This band considered as specific band for these isolates, which released high pathogenisity effect. RAPD–PCR markers were used to discriminate variations between Fusarium isolates and causing disease. There is specific band for each fungus which act as molecular marker for each fungus and there are some bands common among some isolates of pathogenic fungi. The dendrogram shows there is degree of relationship between F. sterilihyphosum and F. proliferatum; between F. moniliforme and F. subglutinans; between F. oxysporum and F. chlamydospore; the degree of relationship among F. subglutinans, F. proliferatum and F. sterilihyphosum and degree of relationship among F. moniliforme, F. sterilihyphosum, F. proliferatum and F. subglutinans
Agentes de onicomicosis en Costa Rica
Salas-Campos,Ingrid; Chaves-Madrigal,Olga;
Revista Costarricense de Ciencias Médicas , 2004,
Abstract: dermatophytes are the most common etiological agent of onychomycosis, however fusarium sp., aspergillus sp. y scopulariopsis brevicaulis have been identified as primary agent. in the present work we attended 330 patients which onychopathies in the clinical laboratory of the hospital calderon guardia. in total 206 patients were diagnosed with onychomycosis. of these patients, 119 were diagnosed only by direct examination, 83 by both direct examination and culture, and 4 only by culture of the etiological agent. fusarium sp. was identified among the agents of onychomycosis. this fungus respond very poorly to antifungals commonly use in onychomycosis cause by dermatophytes. thus, our finding point out the important of the identification of the etiological agent of onychomycosis.
Jasenka ?osi?,Karolina Vrande?i?,Brankica Svitlica
Poljoprivreda (Osijek) , 2004,
Abstract: Fusarium species are widespread and play an important role in disease etiology of wheat and maize. Wheat and maize for Fusarium isolations were collected during seven-year period from ten locations in Eastern Croatia. Nine Fusarium species and M. nivale were identified from 1169 isolates of wheat plants and six Fusarium species from 894 isalates of maize plants. The most dominant species from all parts of wheat and from debris of maize roots and stems was F. graminearum. F. moniliforme was most frequently isolated species of maize kernels and stems. During this research, F sporotrichioides was determined for the first time in Croatia.
Eficácia da clorexidina-cetrimida na desinfec??o ambiental contra Aspergillus spp.
Xavier, M.O.;Meinerz, A.R.M.;Cleff, M.B.;Osório, L.G.;Schuch, L.F.D.;Nobre, M.O.;Silva Filho, R.P.;Meireles, M.C.A.;
Arquivo Brasileiro de Medicina Veterinária e Zootecnia , 2008, DOI: 10.1590/S0102-09352008000400015
Abstract: the study evaluated the in loco activity of chlorexidine-cetrimide for environmental control of aspergillus spp. considering the climatic influence and population variations, in a recuperation center of marine animals. samples of air were collected throughout two years by the sediment method, and the disinfection program was established in the second year. data collected during the two years were statistically compared by epinfo 8.0. program. it was demonstrated that both population and climate had no influence on the fungal isolation, and the disinfection program with chlorexidine-cetrimide was considered effective in the reduction of conidia aspergillus concentration indoor.
Evaluación de la Micoflora aérea en las areas críticas del Hospital principal de Cumaná, Estado Sucre, Venezuela
Centeno,Sara; Machado,Sandra;
Investigación Clínica , 2004,
Abstract: abstract the study of the nosocomial infections of fungic origin has attained importance in the last years, due to the rise in the number of patients that are inmunocompromised and susceptible to suffer this kind of infection. the objective of the present study was to evaluate the frequency of filamentous fungi and yeast, present in the environment of the intensive care unit, operating and newborn children rooms of the hospital universitario "antonio patricio de alcalá" (huapa) from the city of cumaná, sucre state, venezuela. the recount of colony forming units/plate (ucf/plate) of the filamentous fungi and yeast was done in petri plates with sabouraud dextrose agar, which were exposed in the different studied areas. eventually, the fungus colonies found were isolated and identified. the area that presented the highest average of ucf/plate was the intensive care unit (9 ucf/plate). the isolated genus of filamentous fungus in higher proportion were aspergillus (46,80%), penicillium (19,19%) and fusarium (11,06%). the isolated species with more frequency were aspergillus niger (24,80%), aspergillus flavus (10,54%) and fusarium solani (9,52%). rhodotorula glutinis was the isolated yeast with most frequency and different species of the genus candida and the genus criptococcus were isolated as well.
Culture medium for amylase production by toxigenic fungi
Figueira, Edson Luiz Zangrando;Hirooka, Elisa Yoko;
Brazilian Archives of Biology and Technology , 2000, DOI: 10.1590/S1516-89132000000500003
Abstract: mycelial growth and amylase production by a mycotoxigenic strain of fusarium moniliforme and aspergillus flavus were evaluated in a culture medium containing starch, glycerol, wheat bran or corn. with emphasis on corn, different fractions composed by germ, degermed seed, starch, milky stage corn and the respective starch or supernatant fraction were analyzed for f. moniliforme growth . the medium composed of milky stage corn supernatant promoted the best mycelial growth (p<0.05), and it was used to prepare amylase production medium in the next step. the medium composed with 2% ground corn in milky stage corn supernatant (350g of milky stage corn blended with 250ml water and centrifuged) promoted the highest amylase production, which was at the 10th day of fermentation, both for f. moniliforme (42.32u/ml) and a. flavus (4,745.54u/ml).
Investigation of toxigenic potential of fungal species by the use of simple screening method
Bo?arov-Stan?i? Aleksandra S.,Levi? Jelena T.,Dimi? Gordana R.,Stankovi? Slavica ?.
Zbornik Matice Srpske za Prirodne Nauke , 2009, DOI: 10.2298/zmspn0916025b
Abstract: Potential for the biosynthesis of aflatoxin B1 (AFLB1), ochratoxin A (OTA), diacetoxyscirpenol (DAS), T-2 toxin (T2), and zearalenone (ZON) was investigated in different fungal species belonging to the genera: Aspergillus, Fusarium and Penicillium. The majority of investigated isolates originated from cereal grains, crushed oil soybean seed and fodder mixtures. The simple screening method developed by Filtenborg et al. (1983) was applied with few modifications concerning the type of the medium and cultivation temperature. In order to optimise the biosynthetic conditions for different mycotoxins, the following control cultures, known as mycotin producers were used: OTA - A. ochraceus CBS 108.08, DAS - F. semitectum (SL-B i SL-C), T2 - F. sporotrichioides (ITM-391, M-1-1, R-2301) and ZON - F. graminearum (GZ-LES). The fungi were cultivated on the standard medium (YESA - 2% yeast extract, 15% sucrose and 2% agar, pH 6.5), three modifications of the basic medium (YESAZn - the standard medium supplemented with 0.23 mg/l ZnSO4 x 5 H2O; PPSA - the medium in which yeast extract was replaced with peptone-1; PPSAZn - the medium in which yeast extract was replaced with peptone-1 and supplemented with 0.23 mg/l ZnSO4 x 5 H2O), and the potato-dextrose agar (PDA). The earlier biosynthesis of tested mycotoxins was recorded under the following cultivation conditions of fungal species: AFLB1 - after 14 days on PDA at 27±1°C, OTA - after 10 days on YESA and YESAZn at 27±1°C, DAS - after 10 days on PPSA and PPSAZn at 27±1°C, T2 - after 7 days on PPSAZn and PPSA at room temperature (20-24°C), and ZON - after 1 week on YESA and YESAZn at room temperature (21-24°C).
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