scholarly journals Mycoflora associated with infected fruits of different varieties of Musa sapientum L. and their pathogenic potentiality

2017 ◽  
Vol 26 (1) ◽  
pp. 101-110
Author(s):  
Md Al Ameen ◽  
S Shamsi ◽  
MA Bashar

A total of 11 fungal species were isolated from the 25 infected fruit samples of three varieties (Sabri, Champa and Sagor) of Musa sapientum. The isolated fungi were Aspergillus flavus Link, A. fumigatus Fresenius, A. niger van Tiegh., Colletotrichum musae (Berk. & Curt.) Arx, Curvularia brachyspora Boedijn., Fusarium semitectum Berk. & Rav. Fusarium sp. Link, Penicillium sp., Pestalotiopsis disseminata (Thum) Steyaert, Rhizopus sp. Ehrenb. and Trichoderma viride Pers. ex Gray. Fusarium semitectum showed the highest (28.61) per cent association frequency in Sabri variety whereas Fusarium sp. showed the lowest (3.33). Curvularia brachyspora showed the highest (21.11) per cent frequency in Champa variety whereas A. fumigatus showed the lowest (2.78). Fusarium sp. showed the highest (41.67) per cent frequency in Sagor variety whereas T. viride showed the lowest (3.34). Among the isolated fungi C. musae, C. brachyspora, F. semitectum, Fusarium sp. and P. disseminata were found to be pathogenic to three banana varieties. The presence of Pestalotiopsis disseminata (Thum) Steyaert in Sabri variety of banana is the first record in Bangladesh. Dhaka Univ. J. Biol. Sci. 26(1): 101-110, 2017 (January)

2012 ◽  
Vol 36 (2) ◽  
pp. 257-262
Author(s):  
Rokeya Haq ◽  
Shamim Shamsi

Fifteen species of fungi belonging to ten genera were found to be associated with Leea macrophylla Roxb. ex Harnem. The species are Alternaria tenuissima (Kunze ex Pers.) Wiltshire, Aspergillus flavus Link, Aspergillus fumigatus, Aspergillus niger van Tiegh, Chaetomium Kunze, Colletotrichum musae (Berk. & Curt.) Arx, Colletotrichum dematium (Pres. Ex Fr.) Grove, Curvularia pallescens Boedijn,, Fusarium moniliforme Shelden, Fusarium sp., Melasmia Lev, Penicillium sp., Rhizopus sp., Trichoderma harzianum Pers. and Trichoderma viride Pers. This is the first record of association of the fungi with Leea macrophylla from Bangladesh. All the identified fungi were tested for their pathogenic potentiality. Colletotrichum dematium, Curvularia pallescens, and Fusarium sp. produced symptoms on artificially inoculated leaves of Leea macrophylla. DOI: http://dx.doi.org/10.3329/jbas.v36i2.12972 Journal of Bangladesh Academy of Sciences, Vol. 36, No. 2, 257-262, 2012


2020 ◽  
Vol 27 (1) ◽  
pp. 129-136
Author(s):  
Zuhra Yasmin ◽  
Shamim Shamsi

Fifteen fungal species representing 12 genera were found to be associated with leaf spot and anthracnose diseases of Rauvolfia serpentina (L.) Benth. ex Kurz. which were collected from different habitats of Bangladesh. Fungi were isolated following ‘tissue planting’ and ‘blotter’ method. The isolated fungi were Alternaria alternata (Fr.) Keissler, Aspergillus flavus Link ex Fr., A. niger van Tieghm, Colletotrichum gloeosporioides (Penz.) Sacc., Curvularia lunata (Wakker) Boedijn, Fusarium sp.1. Fusarium sp. 2, Macrophoma sp., Nigrospora sphaerica (Sacc.) Mason, Penicillium digitatum Saccardo, Penicillium italicum Whemer, Pestalotiopsis guepinii (Desm.) Stay, Pseudocercospora libenbergii (Syd.) Deighton, Rhizopus stolonifera Vuillemin. Toney, Trichoderma viride Pers. During the present investigation, Pseudocercospora libenbergii is a new record for Bangladesh. Bangladesh J. Plant Taxon. 27(1): 129-136, 2020 (June)


Author(s):  
H. O. Stanley ◽  
M. E. Amesi

This study was conducted to assess the outdoor air quality of some urban slums in Port Harcourt. Six sampling sites were selected, from the Port Harcourt urban slums; two sites from each slum represented with a suffix 1 or 2.  The slums are designated Marine base (#1 and #2), RSU BG, Obudu 2, Bundu (#1 and #2). The air quality was analyzed using portable handheld air quality analyzer and the microbiological parameters were determined by standard cultural method. The study revealed that the sampled sites were laden with bacterial and fungal species. namely; Klebsiella sp., Micrococcus sp., Escherichia sp., Pseudomonas sp., Baccilus sp., Aeromonas sp., Streptococus sp., Serratia sp., Aerococcus sp., Proteus sp. Penicillium sp., Fusarium sp., Candida sp., Aspergillus sp., Mucor sp., Rhizopus sp. and Tricorderma sp. Highest obtained noise level was at Marine base 1 which was  66 db, highest relative humidity of 54.8% at RSU BG, CO2  (ppm) values of 4.8, 80, 796, 850, 638, 698 for Marine base 2, Marine base 1, Obudu 2, RSU BG, Bundu 1 and Bundu 2 respectively. The values for NO2 (ppm) was (0.05, 0.053, 0.071, 0.022, 0.035, 0.023), suspended particulate matter (ppm) was (7.1, 8.7, 9.5, 9.5, 6.2, 6.2), SO2 (ppm) was (0.42, 0.15, 0.50, 0.34, 1.26, 0.41) CO (ppm) was (4.8, 1.7, 2.2, 3.0, 3.9, 3.6) and volatile organic compound (ppm) was (1.0, 1.1, 0.9, 75 and 1.2). This study has shown that Port Harcourt urban slums are experiencing some degree of contamination not acceptable for healthy living that requires attention to curb. These areas require all-round improvement in sanitation.   M Give one sentence on methodology.


2014 ◽  
Vol 38 (2) ◽  
pp. 225-233 ◽  
Author(s):  
Anita Ghosh ◽  
Shamim Shamsi

Five types of symptom were recorded on two varieties of rose plant. The symptoms were Black spot, Leaf spot1, Leaf spot2, Blight and Anthracnose. The study revealed the presence of 20 species of fungi belonging to 17 genera. The isolated fungi were Alternaria alternata (Fr.) Keissler, Arthrinium saccharicola Stevenson, Aspergillus flavus, Link., A. niger van Tiegh., Botrytis allii Munn, Cercospora sp., Cladosporium cladosporioides (Fresen.) de Vries, C. oxysporum Berk. & Curt., two species of Colletotrichum, Curvularia brakyospora Boedijn, Curvularia pallescens Boedijn, Fusarium sp., Epicoccum purpurascens Ehreneb ex Schlecht; Link, Gibberella sp., Marssonina rosea (Lib.) Died, Nigrospora sphaerica (Sacc.) Masson, Pestalotiopsis guepinii (Desm.) Stay. with its two culture types, Penicillium sp., Rhizopus stolonifer (Ehrenb. Ex. Fr) Vuill. and Trichoderma viride Pers. ex Fries. The frequency (%) of association of P. guepinii was higher than any other fungi. Pestalotiopsis guepinii and its two culture types were found to be pathogenic to rose plant. DOI: http://dx.doi.org/10.3329/jbas.v38i2.21347 Journal of Bangladesh Academy of Sciences, Vol. 38, No. 2, 225-233, 2014


2014 ◽  
Vol 37 (2) ◽  
pp. 211-217 ◽  
Author(s):  
Fatema Yeasmin ◽  
Shamim Shamsi

Two types of symptoms, blight and anthracnose, were recorded on two species of Gerbera viz. Gerbera aurantiaca L. and Gerbera viridifolia L. The most common fungal species isolated from Gerbera spp. were Alternaria citrii, A. tennuisssima, Aspergillus flavus, A. fumigatus, A. niger, A. terreus, Bipolaris hawaiiensis, Chaetomella raphigera, Cladosporium cladosporoides, Colletotrichum capsici, C. coffeanum, C. dematium, C. gleosporioides, C. lindemuthianum, C. musae, C. orbiculare, Colletorichum sp.1, Colletotrichum sp.2, Colletotrichum sp.3, Colletotrichum sp.4, Curvularia clavata, C. lunata, Fusarium nivale, F. semitectum, Phomopsis sp., Penicillium sp., Pestalotia sp., Rhizopus stolonifer, Trichoderma viride, one cleistothecial ascomycetes and one sterile fungus. The frequency percentage of association of Colletotrichum spp. with Gerbera spp. was higher than any other fungi. Bipolaris hawaiiensis is a new record for Bangladesh. Among the isolated fungi Alternaria citrii, A. tennuissima, Colletotrichum capcisi, C. dematium, C. coffeanum and Curvularia clavata were found to be pathogenic to Gerbera plant. DOI: http://dx.doi.org/10.3329/jbas.v37i2.17562 Journal of Bangladesh Academy of Sciences, Vol. 37, No. 2, 211-217, 2013


2021 ◽  
Vol 50 (1) ◽  
pp. 131-140
Author(s):  
Mahfuza Aktar ◽  
Shamim Shamsi

Twenty species of fungi associated with blight symptom of different plant parts of Tagetes erecta L. and T. patula L. have been described. The associated fungi were Alternaria alternata (Fr.) Keissler, Aspergillus flavus Link, A. fumigatus Fresenius, A. niger van Tieghem, Bipolaris australiens is (M.B. Ellis) Tsuda &Ueyama, Chaetomium globosum Kunze, Cladosporium elatum (Harz) Nannf., Corynespora cambrensis M. B. Ellis, Curvularia brachyspora Boedijn, C. fallax Boedijn, C. lunata (Wakker) Boedijn, C. stapeliae(du Plessis) Hughes &du Plessis, Epicoccum purpuras cens Ehrenb. ex Schlecht,, Fusarium semitectum Berk. & Rav., Monochaetia ceratoniae (Sousa da Camera) Sutton, Nigrospora panici Zimm., Penicillium italicum Wehmer, Rhizopus stolonifer (Ehrenb.: Fr.) Vuill, Trichoderma viride Pers. and Trichothecium roseum Link.


2003 ◽  
Vol 25 (1) ◽  
pp. 56-64 ◽  
Author(s):  
Adalgisa Aranha de Souza ◽  
Riselane de Lucena Alcântara Bruno ◽  
Egberto Araújo ◽  
Genildo Bandeira Bruno

A conscientização ecológica globalizada exige alimentos mais naturais, o que tem levado ao aprimoramento de medidas de controle integrado, através do uso de métodos alternativos para a produção de sementes livres de resíduos tóxicos. Com o objetivo de avaliar a micoflora e a qualidade fisiológica, sementes do algodoeiro (Gossypium hirsutum L.) com e sem línter, cultivares CNPA 7H e Precoce 2 foram tratadas, ou não, com os fungicidas químicos pentacloronitrobenzeno (PCNB), captan, benomyl e tolylfluanid, aplicados puros e também misturados ao extrato de aroeira (Astronium urundeuva L.) e avaliadas quanto à qualidade fisiológica (germinação, índices de velocidade de germinação e de emergência em campo) e à ocorrência de fungos. Utilizou-se o delineamento inteiramente casualizado em esquema fatorial 10x2x2 (tratamentos x cultivares x tipos de sementes), com quatro repetições. Sementes com línter de ambas as cultivares apresentaram menor qualidade fisiológica. O extrato de aroeira puro não controlou os fungos porém, quando associado aos fungicidas, captan, benomyl e tolylfluanid, reduziu a incidência de Aspergillus spp. e Fusarium sp. na cv. Precoce 2. Houve redução na viabilidade e no vigor das sementes deslintadas tratadas com o extrato de aroeira puro ou associado aos fungicidas. A micoflora foi constituída principalmente por: Aspergillus flavus, Aspergillus sp., Fusarium sp. e Rhizopus sp.


2019 ◽  
Vol 7 (3) ◽  
pp. 36-39
Author(s):  
Shatha Ali Shafiq ◽  
Y. H Aljuraisy

Fungi are ubiquitous in distribution and are a serious threat to public health in indoor environments. The study was conducted to evaluate surface sampling in conjunction with air sampling for the detection of fungal contamination in Biology Department’s laboratoriesand determine the best detergent which treats with it. The study was carried out at the Biology Department, College of Science, Al-Mustansiriyah University, Baghdad. It was includes  (i) isolation fungal samples on Potato Dextrose Agar (PDA) and identification these isolates by using morphological and microscopical characteristics and (ii) evaluation of three detergents on the most prevalent species of isolated fungi by using disk diffusion method and measuring the zone of inhibition against the tested isolate around each detergent.The results identified ten fungal species isolated from these laboratories, Alterneria sp., Aspergillusniger, Aspergillusflavus, Aspergillusterreus, Cladosporium sp., Penicillium sp., Rhizopus sp.,Fusarium sp., Geotrichum sp. andOxysporum sp.. Among all,Aspergillusniger was the more prevalent in all scanned laboratories. On the other hand, formalin when tested on A. nigerwas more effective than other detergents.We concluded that all tested laboratories had fungal contaminants due to numerous contamination sources. Formaldehyde fumigation will be very necessary to sterilize these laboratories.    


Nova ◽  
2018 ◽  
Vol 16 (29) ◽  
pp. 71-89
Author(s):  
Lucía Constanza Corrales Ramírez ◽  
Ligia Consuelo Sánchez Leal ◽  
Melco Esteban Quimbayo Salamanca

Objetivo. Identificar microorganismos fitopatógenos presentes en las aguas utilizadas para riego en la cuenca media del rio Bogotá. Métodos. Las muestras fueron tomadas en doce fincas de la cuenca media y analizadas con la técnica de filtración por membrana. Las bacterias se identificaron por bioquímica y los hongos por claves dicotomas. Resultados. El agua de riego analizada contenía bacterias como: E.coli, P. vulgaris, A. urinae, E. cloacae, B.cereus, S. marcescens, B. brevis, y en cuanto a los hongos se encontraron: Aspergillus fumigatus, Aspergillus flavus., Mucor sp., Rhizopus sp., Penicillium sp. y Fusarium sp. La presencia de estos potenciales fitopatógenos en el agua indican un alto riesgo de contaminación y dispersión de éstos en los cultivos.


Author(s):  
M. A. Nitu ◽  
M. Rahaman ◽  
F. M. Aminuzzaman ◽  
N. Sultana

Microflora from potato rhizosphere soil was isolated from different potato fields of Bangladesh. Seventeen soil samples were analyzed for the presence of microflora in selected potato field soils. Seven fungal species and one bacterium species were morphologically characterized using soil dilution and streak plate methods. The predominant fungi isolated including Alternaria sp., Aspergillus sp., Penicillium sp., Rhizopus sp., Bipolaris sp., Phytophthora sp., Fusarium sp. and one bacterium was identified as Ralstonia solanacearum. Individual colonies of fungi and bacteria were counted on Potato Dextrose Agar (PDA), V8 juice Agar and their presence in soil was compared in respect of different locations of potato fields. The occurrence of Phytophthora sp. was medium in Tongibari and lower in Singair Union, Sonargaon, Matlab Dakshin, Gobindaganj, Palashbari, Gopinathpur and Bagmara. The highest counts of R. solanacearum were found in Singair Union, Tongibari and Daudkandi and the lowest counts were made in Palashbari and Bagmara. This was the first reported examination of the microbial diversity of soil microflora in some selected potato fields of Bangladesh.


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