scholarly journals Fungi associated with datura metel L.

1970 ◽  
Vol 19 (1) ◽  
pp. 83-89
Author(s):  
Mahfuzar Aktar ◽  
Shamim Shamsi
Keyword(s):  
Aspergillus Niger ◽  
Key Words ◽  
Alternaria Alternata ◽  
New Records ◽  
Fungal Species ◽  
Rhizopus Stolonifer ◽  
Datura Metel ◽  
Pseudocercospora Fuligena ◽  
Colletotrichum Coffeanum ◽  
Penicillium Spp

A total of 20 species of fungi representing 12 genera were found to be associated with Datura metel L. in Bangladesh. The fungi were Alternaria alternata (Fr.) Keissler, Arthrinium saccharicola Stevenson, Aspergillus niger Van Tiegh., A. flavus Link ex Fr,, Cladosporium elatum (Harz) Nannf., C. coffeanum Noack, C. gloeosporioides {Penz.) Sacc., C. graminicola (Ces.) Wilson, Corynespora pruni (Berk. & Curt.) M. B. Ellis, Curvularia fallax Boedijn, C. lunata (Wakker) Boedijn, C. penniseti (Mitra) Boedijn, C. prasadii R.L. & B.L Mathur, Fusarium flocciferum Corda. Sturm's Deutschl, F. nivale (Fr.) Ces., Rabenth. Herb., Nigrospora sphaerica (Sacc.) Mason, Penicillium spp., Pseudocercospora fuligena (Roldan) Deighton, Rhizopus stolonifer (Ehrenb. ex. Fr.) Lind and one sterile unidentified fungal species. The percentage of association of Cladosporium elatum isolated from infected fruits was higher than any other fungi. Arthrinium saccharicola, Colletotrichum coffeanum, Corynespora pruni, Fusarium flocciferum and F. nivale are new records for Bangladesh. Key words: Fungi; Association; Datura metel DOI: http://dx.doi.org/10.3329/dujbs.v19i1.8947 DUJBS 2010; 19(1): 83-89

scholarly journals Qualidade sanitária e fisiológica de sementes de abóbora variedade Menina Brasileira

2006 ◽  
Vol 31 (2) ◽  
pp. 158-163 ◽  
Author(s):  
Derblai Casaroli ◽  
Danton C. Garcia ◽  
Marlove F. B. Muniz ◽  
Nilson L. de Menezes
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Oxysporum ◽  
Alternaria Alternata ◽  
Penicillium Digitatum ◽  
Cucurbita Moschata ◽  
Rhizopus Stolonifer ◽  
Cladosporium Cucumerinum

O trabalho teve como objetivos avaliar e correlacionar a qualidade sanitária e fisiológica de sementes de abóbora, variedade Menina Brasileira (Cucurbita moschata.). Foram avaliados dois lotes de sementes de abóbora produzidas no sistema agroecológico e quatro no sistema convencional, com e sem tratamento químico. Os lotes foram submetidos aos testes de sanidade, seguindo a metodologia do "Blotter test", com congelamento, germinação e vigor (primeira contagem, índice de velocidade de germinação, envelhecimento acelerado e emergência de plântulas). Os resultados indicaram a separação dos lotes de diferentes origens a partir da qualidade sanitária e fisiológica, onde as maiores incidências de fungos foram observadas nos lotes agroecológicos e o maior potencial fisiológico foi observado nos lotes de origem convencional não tratados. Foram encontrados os fungos Fusarium oxysporum, Alternaria alternata, Cladosporium cucumerinum, Aspergillus niger, Penicillium digitatum, Rhizopus stolonifer e Phoma terrestris. A qualidade sanitária não interferiu na qualidade fisiológica das sementes de abóbora, variedade Menina Brasileira.

scholarly journals PRESENTATION PATTERN AND FUNGAL AGENTS SPECTRUM CAUSING OTOMMYCOSIS

2018 ◽  
Vol 11 (1) ◽  
pp. 408
Author(s):  
Kassim Dekhil
Keyword(s):  
Candida Albicans ◽  
Aspergillus Niger ◽  
Aspergillus Fumigatus ◽  
Influencing Factors ◽  
Aspergillus Flavus ◽  
Species Distribution ◽  
Alternaria Alternata ◽  
Otitis Externa ◽  
Fungal Species ◽  
The Public

 Objective: This study was aimed to identify the public pattern of presentation, influencing factors, and sort the fungal species, distribution of sex of patients with otomycosis.Results: The predominant complaints were pruritus and found in 76 patients (88.73%), discomfort and pain found in 62 patients (72.09%), aural fullness in 48 patients (55.81%), tinnitus in 34 patients (39.53%), hearing impairment in 50 cases (58.31%), ear discharge in 22 patients (25.58%), and most of the symptoms seen in 36 patients (68.14%). The results showed a total of eight fungal species belong to six different genera, namely, Aspergillus, Candida, Penicillium, Rhizopus, Alternaria, and Cephalosporium were isolated during this study. Among identified fungi, Aspergillus niger was found to be the most prevalent fungal species with 35.71% followed by Candida albicans (27.55%), Aspergillus flavus (10.20%), Aspergillus fumigatus (8.16), Penicillium digitatum (6.12%) and Cephalosporium species (4.08%), and Rhizopus species (5.1%), while Alternaria alternata had the lowest percentage (6.54%).Conclusion: Otomycosis/mycotic otitis externa is still a common problem and there is a rise in the occurrence of otomycosis in latest years, especially in tropical and subtropical humid climates.

scholarly journals Antifungal Activity of Plant Extracts against Aspergillus niger and Rhizopus stolonifer

2014 ◽  
Vol 9 (11) ◽  
pp. 1934578X1400901 ◽  
Author(s):  
Venkatasaichaitanya Surapuram ◽  
William N. Setzer ◽  
Robert L. McFeeters ◽  
Hana McFeeters
Keyword(s):  
Antifungal Activity ◽  
Aspergillus Niger ◽  
Human Health ◽  
Plant Extracts ◽  
Food Supply ◽  
Fungal Species ◽  
Rhizopus Stolonifer ◽  
Antifungal Properties ◽  
Recent Advances

Despite recent advances in antifungal development, fungi remain a devastating threat to human health and compromise viability of the food supply. Plant based antimicrobials represent a vast untapped source with tremendous potential. Herein we present the antifungal properties of more than 50 plant extracts against two important human and agricultural pathogens, Aspergillus niger and Rhizopus stolonifer. Multiple extracts exhibit promising MIC values of less than 100 μg/mL and are reported for both fungal species.

Incidence of Mycotoxigenic Alternaria alternata and Aspergillus flavus in Barley

1993 ◽  
Vol 56 (3) ◽  
pp. 246-248 ◽  
Author(s):  
V. SANCHIS ◽  
A. SANCLEMENTE ◽  
J. USALL ◽  
I. VIÑAS
Keyword(s):  
Aspergillus Flavus ◽  
Alternaria Alternata ◽  
Monomethyl Ether ◽  
Fungal Species ◽  
Tenuazonic Acid ◽  
Alternariol Monomethyl Ether ◽  
Penicillium Spp

The predominant fungal species present in 60 samples of barley collected in Spain were Alternaria alternata, Penicillium spp. and Aspergillus flavus. Of the 176 Alternaria isolates examined, 88.6% produced tenuazonic acid, 15.3% produced alternariol, and 9% produced alternariol monomethyl ether. Only 6% of the 190 isolates of A. flavus produced aflatoxin.

Host and geographical distribution of Verticicladium trifidum, Thysanophora penicillioides, and similar fungi on decaying coniferous needles

1997 ◽  
Vol 75 (5) ◽  
pp. 699-710 ◽  
Author(s):  
A. van Maanen ◽  
F. Gourbière
Keyword(s):  
Key Words ◽  
Alternaria Alternata ◽  
Ecological Niche ◽  
Fungal Species ◽  
Cold Climates ◽  
Litter Fall ◽  
Coniferous Species ◽  
Mediterranean Regions ◽  
Fungal Distribution ◽  
Coniferous Needles

Dematious hyphomycetes such as Verticicladium trifidum and Thysanophora penicillioides are examples of equivalent species occupying the same ecological niche in different fungal successions. These two species fructify through the stomata of coniferous needles a few months after litter fall. Litter samples of 23 coniferous species from different European sites were examined to explain the fungal distribution. Thysanophora penicillioides colonized Abies, Picea, Pseudotsuga, and Tsuga needles, whereas V. trifidum was restricted to Pinus and Cedrus. Sometimes other fungal species occupied the stomata: on Pinus pinea needles, the niche was occupied by Cladosporium spp. and Alternaria alternata; Chaetopsina fulva have been found only on Pseudotsuga needles and Thysanophora canadensis on Picea. Verticicladium trifidum was apparently absent on Pinus litters from cold climates (high altitude or latitude) and probably from warm mediterranean regions, suggesting a climatic determinism. However, coexistence of Verticicladium and Thysanophora in some samples or colonization of some Pinus litter by Thysanophora suggests that these distributions result from competition rather than strict host specificity. Key words: ecological niche, equivalent species, conifers, needles, Verticicladium trifidum, Thysanophora penicillioides.

scholarly journals Effet de l’association de certains fongicides avec le chlorure de calcium sur le développement d’un complexe fongique responsable de la pourriture des pommes en conservation

2007 ◽  
Vol 88 (1) ◽  
pp. 17-26 ◽  
Author(s):  
Khaled Attrassi ◽  
Rachid Benkirane ◽  
Benaissa Attrassi ◽  
Allal Douira
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Aspergillus Niger ◽  
Fusarium Oxysporum ◽  
Alternaria Alternata ◽  
Penicillium Expansum ◽  
Rhizopus Stolonifer ◽  
Cladosporium Herbarum ◽  
Trichothecium Roseum

L’utilisation du bénomyl et du thiabendazole (famille chimique des benzimidazoles), de l’azoxystrobine et du pyriméthanil montre, autant in vitro qu’in vivo, que ces fongicides sont faiblement à moyennement efficaces contre les agents pathogènes suivants : Rhizopus stolonifer, Penicillium expansum, Aspergillus niger, A. fumigatus, Alternaria alternata, Cladosporium herbarum, Fusarium oxysporum, Saccharomyces cerevisiae, Monilia fructigina, Cryptosporiopsis malicorticis, Spilocaea pomi et Trichothecium roseum. Utilisé in vitro, le chlorure de calcium seul à plus de 4 % est toléré par les douze espèces fongiques. In vivo et à basse température, le chlorure de calcium est efficace lorsqu’utilisé à 4 et 6 %. L’association de ces fongicides avec le chlorure de calcium (4 %) permet de diminuer l’intensité des lésions causées par la pourriture des pommes en conservation. Le chlorure de calcium apparaît intervenir en renforçant les liens avec les principaux sites d’action des fongicides de l’agent pathogène évalué.

scholarly journals Isolation and Identification of Soil Mycoflora in the Upland and Lowland Soils of Usmanu Danfodiyo University, Sokoto, Sokoto State

2018 ◽  
pp. 1-7
Author(s):  
I. Y. Tafinta ◽  
K. Sheh ◽  
H. M. Maishanu ◽  
S. S. Noma ◽  
S. A. Yusif ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Oxysporum ◽  
Trichoderma Harzianum ◽  
Fungal Species ◽  
Potato Dextrose Agar ◽  
Morphological Features ◽  
Rhizopus Stolonifer ◽  
Isolation And Identification ◽  
Dilution Plate ◽  
Cotton Blue

A total of 14 different fungal species belonging to 7 genera were isolated from the upland and lowland soils of Usmanu Danfodiyo University, Sokoto, between October to December, 2015. The mycoflora were isolated using dilution plate technique on Potato dextrose agar amended by 1% streptomycin. Identification was made microscopically using the lacto-phenol cotton blue method and macroscopically by comparing the cultural and morphological features with the help of authentic fungal manual and taxonomic key. The identified species are; Aspergillus niger, A. flavus, A. fumigatus, A. nidulans, A. oryzae, Alternaria longifes, Fusarium oxysporum, F. solani, F. mangifera, Rhizopus stolonifer, R. orizae, Saccharomyces cerevisae, Trichoderma harzianum and Trichophytum quallinum. The highest number of fungi (50 isolates) were obtained from lowland uncultivated soils (D), followed by the upland uncultivated soils (B) with about 34 strains, and the least (22 isolates) were obtained from upland cultivated soils (A) out of the total 132 isolates. Variations between sites were statistically analyzed.

scholarly journals An investigation into the microbial infestation of poultry feeds

2016 ◽  
Vol 13 (1) ◽  
pp. 79-86
Author(s):  
MM Rahman ◽  
MS Islam ◽  
MZ Alam ◽  
M Ashrafuzzaman
Keyword(s):  
Aspergillus Niger ◽  
Moisture Content ◽  
Aspergillus Flavus ◽  
Fungal Species ◽  
Fusarium Spp ◽  
Fungal Population ◽  
Fungal Flora ◽  
Poultry Feeds ◽  
Penicillium Spp ◽  
Feed Samples

The Experiments were carried out during the period of July 2001 to December 2002. Infestation of poultry feeds by fungi and aflatoxins content in feeds were determined. Ten feed samples were collected from ten different farms located in three different areas of Bangladesh. Five different fungal species belonging four genera were detected which were Aspergillus flavus, Aspergillus niger, Fusarium spp, Rhizopus stolonifer and Penicillium spp. Among them Aspergillus flavus and Aspergillus niger were found in all the feed samples and the rest were occasionally found. Effect of storage and moisture content of feeds were studied for determining the influence on occurrence of fungal flora in feeds. Higher the storing period of feed along with higher moisture content resulted superior incidences of fungal population in stored feeds. Studied on storage practice with 4 duration of F1 sample revealed that the presence of aflatoxins were 30.52ppb, 33.36ppb, 37.32ppb and 48.35ppb of 5, 10, 15 and 20 days after production of feeds, respectively.J. Bangladesh Agril. Univ. 13(1): 79-86, June 2015

scholarly journals Fungi causing rots in onions at storage and market

1970 ◽  
Vol 6 (2) ◽  
pp. 245-251 ◽  
Author(s):  
MAM Ara ◽  
ML Khatun ◽  
M Ashrafuzzaman
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Oxysporum ◽  
Aspergillus Flavus ◽  
Fusarium Moniliforme ◽  
Room Temperature ◽  
Storage Period ◽  
Fungal Species ◽  
Disease Development ◽  
Duration Of Storage ◽  
Penicillium Spp

Five varieties of diseased onion samples, four local (Taherpuri, Faridpuri, Kalashnagari, and Zitka) and one Indian (Pusa Red) were collected from different markets of Mymensingh, to isolate and identify the associated fungi. Five different fungal species belonging to three genera were repeatedly isolated. Healthy looking and diseased onions were kept at room temperature. The population of associated fungi increased proportionately with the duration of storage period. The isolated fungi were Aspergillus niger, Aspergillus flavus, Penicillium spp., Fusarium oxysporum and Fusarium moniliforme. Healthy onion bulbs were inoculated (with injury and without injury) with these fungi. Individual fungi produced distinguishable symptom of disease in incubation chamber at 22-23°C temperature. After 30 days of inoculation, bulbs showed comparatively low amount of disease development than those at 60 and 90 days. Maximum disease development was found in the variety Pusa Red (with injury) and it was minimum in Zitka variety (without injury). Keywords: Fungi; Onion; Disease development DOI: 10.3329/jbau.v6i2.4818 J. Bangladesh Agril. Univ. 6(2): 245-251, 2008

Comparative Studies on the Susceptibility of Three Tubers of Dioscorea Species to Dry Rot in Anyigba, Kogi State

2019 ◽  
Vol 8 (1) ◽  
pp. 70-74
Author(s):  
Adegboyega Adeniji ◽  
Apovughaye Taiga ◽  
M S Ayodele
Keyword(s):  
Aspergillus Niger ◽  
Fungal Species ◽  
Pathogenicity Test ◽  
Rhizopus Stolonifer ◽  
Bioactive Substances ◽  
Dry Rot ◽  
Significant Difference ◽  
White Yam ◽  
Yellow Yam ◽  
Dioscorea Species

Various yam species are cultivated but white yam (Dioscorea rotundata Poir.), water yam (Dioscorea alata L.) and yellow yam (Dioscorea cayenensis Lam.) are among the most cultivated in Nigeria. The Susceptibility of three tubers of Dioscorea species (D. rotundata, D. alata and D. cayenensis) to dry rot pathogens was investigated. Isolation was made from rotted tuber tissues, followed by pathogenicity test and identification of isolates; two fungal species Aspergillus niger and Rhizopus stolonifer were isolated and identified as the major fungi causing yam tuber dry rot in the study area. There was significant difference (P<0.05) in the susceptibility of the various Dioscorea tuber species studied to rot caused by Aspergillus niger [D. rotundata (20mm), D. alata (11mm) and D. cayenensis (3.5mm)] and  Rhizopus  stolonifer [ D. rotundata (17.5mm), D. alata (10mm) and D. cayenensis (2mm)]. The phytochemical contents of the three tubers of Dioscorea species examined also varied significantly, with the bioactive substances of D. cayenensis and D. alata relatively higher when compared to D. rotundata. Therefore, this research reveals that three metabolites; Saponin, Flavonoid and Tanin constitute the major trait for resistant ability of D. cayanesis and D. alata to dry rot causing pathogen.  Therefore, it is necessary that the differences in susceptibility be considered when developing yam barns. Also, researchers should work on genetically improving the susceptible white yam (D. rotundata) which is commonly eaten by millions of Nigerians with a possibility of increasing the quantities of the deficient phytochemicals.

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