scholarly journals Fungal Organisms Associated with Post-harvest Rot of Frafra Potatoes [Solenostemon rotundifolius (Poir.)] in Bongo-Soe, Upper East Region, Ghana

Author(s):  
S. Apuri ◽  
C. Kwoseh ◽  
E. A. Seweh ◽  
I. O. Tutu

Aims: The study aims to identifying the microorganisms associated with post-harvest rot of frafra potatoes in Bongo-soe, Upper east region of Ghana. Place and Duration of Study: Department of Horticulture and the Pathology laboratory of the Faculty of Agriculture, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana. The Solenostemon rotundifolius tubers were stored at the Horticulture Department laboratory whiles rot identification was carried out at the Pathology laboratory of the Faculty of Agriculture. The Tubers were stored from 2nd November, 2012 to 22nd March 2013. Methodology: Four hundred (400) tubers of black cultivar and four hundred (400) tubers of a brown cultivar of Solenostemon rotundifolius tubers showing visible signs of rot during the storage were collected. Pieces of diseased tissues from the margin of the necrotic collected and immersed in 10% commercial bleach solution for sterilisation, for one minute. These were then blotted dry and plated on Potato Dextrose Agar PDA. The plates were sealed with a cellotape until growth occurred. Results: The microorganisms identified to be responsible for causing rot in Solenostemon rotundifolius tubers were six in number. Colletotrichum gloeosporioides was identified to be responsible for 30.76% of rots observed, followed by Aspergillus niger, 23.07%, Curvularia lunata, 19.23%, Aspergillus flavus, 11.54%, Trichoderma sp and Penicillium sp both recorded 7.70% of rots observed. The percentage incidence of Aspergillus niger (15.38%), Curvularia lunata (11.54%) and Aspergillus flavus (7.69%) was higher in the black cultivar as compared with the brown cultivar which had percentage incidence of 7.69%, 7.69% and 3.85% respectively. Also, the percentage incidence of Colletotrichum gloeosporioides (15.38%) and Penicillium sp (3.85%) was the same in both the black and brown cultivars of Solenostemon rotundifolius tubers used in this study. Conclusion: The activities of the damaging microorganisms can be reduced by controlling mechanical injury during harvesting, transportation and storage of Solenostemon rotundifolius tubers should be prevented or reduced because they pave the way for tuber infection by the rot causing microorganisms.

2012 ◽  
Vol 36 (1) ◽  
pp. 143-146
Author(s):  
Shamim Shamsi ◽  
Razia Sultana ◽  
Yasmin Fatema

Nine species of fungi belonging to eight genera of Deuteromycetes were found associated with leaves and fruits of breadfruit, Artocarpus altilis. The fungi were Alternaria alternata (Fries) Keissler, Aspergillus niger Van Tiegh, Aspergillus flavus Link, Colletotrichum gloeosporioides (Penz.) Sacc, Curvularia lunata (Wakker) Boedijn., Penicillium sp. Pteroconium state of   Apiospora camptospora Penz. & Sacc. and Spicaria sp., and Zygosporium oscheoides Mont.. This is the first report of association of A. alternata, C. gloeosporioides., Curvularia lunata,  Penicillium sp. Pteroconium state of A. camptospora, Spicaria sp. and Z. oscheoides, with breadfruit. Colletotrichum gloeosporioides was the predominating fungus recorded on all infected matured leaves showing brown lesion and anthracnose symptom, and also pathogenic to breadfruit plant. DOI: http://dx.doi.org/10.3329/jbas.v36i1.10930 Journal of Bangladesh Academy of Sciences, Vol. 36, No. 1, 143-146, 2012


2021 ◽  
Vol 5 (1) ◽  
pp. 86
Author(s):  
Grace Purnamasari Christian ◽  
Wahyu Irawati

<p>The post-harvest fungi is one of the greatest cause of various diseases. Particularly, in fungus that infects seeds, the toxic substance called aflatoxin is found. This has caused us to wonder: Has fungi been pathogenic fungi since the beginning of creation? The purpose of this research is to study: 1) The Place of Fungi in God’s Original Creation and the Origin of Pathogenic Fungi, 2) Characterization of post-harvest fungus on corn seeds, 3) Aspergillus sp.’s Structure as Proof of God’s Wonderful Original Creation and Providence, and 4) The factors that contribute to the growth of fungi in post-harvest corn seeds and our responsibility. We conclude that in the beginning, fungi were a part of God’s originally good and perfect creation. These fungi were created by God with the structure and function to support its operation in fulfilling God’s creative purpose. The complex structure of Aspergillus niger and Aspergillus flavus that infected the corn seeds showed God’s providence after the Fall. Pathogenic fungi were the result of the Fall of man into sin. Their growth is caused by the failure to give proper care to the crops. But this should not discourage us since the Bible tells us that God is continually working to restore His creation. Therefore, we are called to be stewards of His creation, to develop and preserve whatever is entrusted in our hands, including the crops for God’s glory and under His authority until He has fully renewed and restored everything.</p><p><strong>BAHASA INDONESIA ABSTRACT:</strong> Jamur pasca panen merupakan salah satu penyebab terbesar timbulnya berbagai penyakit, khususnya disebabkan oleh jamur yang menginfeksi biji-bijian dan menghasilkan substansi beracun disebut dengan aflatoksin. Keadaan ini menimbulkan pertanyaan apakah jamur patogenik ada sejak awal penciptaan? Penelitian ini bertujuan untuk mempelajari: 1) Posisi jamur patogenik di awal penciptaan dan asal mula jamur patogenik, 2) karakteristik jamur pasca panen pada biji jagung, 3) struktur <em>Aspergillus</em> sp sebagai bukti dari providensi Allah akan ciptaanNya yang sangat luar biasa, 4) faktor-faktor yang berkontribusi terhadap pertumbuhan jamur pasca panen biji jagung dan Tanggung jawab kita. Dari hasil penelitian ini disimpulkan bahwa pada mulanya, jamur merupakan bagian ciptaan Allah yang sungguh amat baik dan sempurna. Struktur yang kompleks dari <em>Aspergillus niger</em> dan <em>Aspergillus flavus </em>yang menginfeksi biji jagung menunjukkan providensi Allah setelah kejatuhan dosa. Pertumbuhan jamur patogenik merupakan gambaran kejatuhan manusia ke dalam dosa yaitu kegagalan manusia untuk memberikan pemeliharaan yang memadahi pada biji-bijian pasca panen. Namun demikian, keadaan ini tidak mematahkan semangat kita karena Alkitab mengatakan bahwa Allah masih terus bekerja untuk memulihkan ciptaanNya. Oleh karena itu, diharapkan kita semua menjadi pelayan atas ciptaanNya untuk mengembangkan dan menjaga apa yang dipercayakan kepada kita di bawah otoritasNya termasuk biji-bijian untuk memuliakan Allah hingga Dia secara penuh memperbaharui dan memulihkan segala sesuatu</p>


2020 ◽  
Vol 3 (1) ◽  
pp. 1-15
Author(s):  
Sifa Sobianti ◽  
Loekas Soesanto ◽  
Suciati Hadi

Penelitian ini bertujuan untuk mengetahui (1) beragam spesies jamur patogen tular-benih pada lima varietas padi, dan (2) persentase daya kecambah lima varietas padi. Penelitian dilaksanakan di Laboratorium Karantina Pertanian Kelas I Semarang, dari bulan Maret sampai dengan Mei 2019. Penelitian ini menggunakan Rancangan Acak Lengkap dengan 5 perlakuan dan 5 ulangan, perlakuan terdiri atas Varietas Inpago Unsoed 1, Inpago Unsoed Parimas, IR64, Ciherang, dan Situ Bagendit. Isolasi dan identifikasi jamur patogen tular-benih dilakukan pada blotter test dan medium PDA, dengan pengamatan di bawah mikroskop stereo dan kompon, kemudian dibandingkan dengan pustaka. Variabel yang diamati yaitu morfologi koloni patogen, morfologi patogen, dan daya kecambah. Hasil penelitian menunjukkan bahwa (1) pada semua varietas benih padi terdapat jamur patogen tular-benih, tetapi tidak semua jamur tersebut dijumpai pada setiap varietas. Jenis jamur patogen tular-benih yang dijumpai, yaitu Alternaria padwickii Ganguly, Aspergillus flavus Link, Aspergillus niger van Tieghem, Curvularia lunata (Wakker) Boedjin, Curvularia pallescens Boedjin, Drechslera oryzae Breda de Haan, Fusarium semitectum Berk. & Rav. [W&R, G,B,J], Rhizoctonia solani J. G. Kuhn, Rhizopus oryzae Went & Prins. Geerl., dan Tilletia barclayana Bref., dan (2) uji daya kecambah menunjukkan bahwa masing-masing varietas benih padi memilki persentase daya kecambah benih yang berbeda. Daya kecambah benih berturut-turut pada varietas IR64, Ciherang, Inpago Unsoed 1, Inpago Unsoed Parimas, dan Situ Bagendit sebesar 85,75, 81,75, 80,25, 76,5, dan 70%.


2017 ◽  
Vol 24 (0) ◽  
Author(s):  
Vinícius Spolaor Fantinel ◽  
Luciana Magda de Oliveira ◽  
Ricardo Trezzi Casa ◽  
Priscilla Félix Schneider ◽  
Emerson Couto da Rocha ◽  
...  

RESUMO Acca sellowiana é uma espécie frutífera nativa da Região Sul do Brasil que está despertando grande interesse econômico devido ao alto potencial organoléptico de seus frutos. A principal forma de propagação da espécie é via sexuada. Objetivando determinar a qualidade sanitária das sementes, foram comparadas três formas de detecção de fungos, com ou sem a assepsia superficial, em sementes oriundas de quatro municípios do Estado do Rio Grande do Sul e de três municípios do Estado de Santa Catarina. Foram testados os meios de cultura Batata-Dextrose-Ágar (BDA), V8 (suco de tomate) e o método Blotter Test. Foram identificados os seguintes fungos: Aspergillus niger, Aspergillus flavus, Penicillium sp., Colletotrichum gloeosporioides, Fusarium sp., Curvularia sp., Alternaria sp., Trichoderma sp., Epicoccum sp. e Phomopsis sp. Os meios agarizados são mais sensíveis na detecção de fungos em sementes de goiaba serrana. A assepsia das sementes reduz a incidência de fungos infestantes.


2020 ◽  
Vol 29 (2) ◽  
pp. 183-189
Author(s):  
Nusrat Jahan Shova ◽  
Shamim Shamsi ◽  
MA Bashar

Two major species of Indian spinach, namely Basella alba L. and B. rubra L. were selected to find out associated mycoflora and their pathogenic potentiality. Ten fungi viz., Alternaria alternata, Aspergillus flavus, A. fumigatus, A. niger, Colletotrichum dematium, C. lindemuthianum, Curvularia lunata, Drechslera sacchari, Fusarium semitectum and Penicillium sp. were found to be associated with the selected leaves of Basella spp. Among the isolated fungi C. lindemuthianum, D. sacchari and F. semitectum were found to be pathogenic to Basella spp. Association of C. lindemuthianum and D. sacchari with Basella spp. are recorded first time from Bangladesh. Dhaka Univ. J. Biol. Sci. 29(2): 183-189, 2020 (July)


2018 ◽  
Vol 29 (1) ◽  
pp. 15
Author(s):  
Dina Yousif Mohamed

The aim of this study is to detection the antifungal effect of Zirconium oxide nanoparticles on mold which isolated from domestic's bathroom during April 2017 in Baghdad City. Twenty species were isolated from one hundred samples which were Aspergillus niger, Aspergillus. flavus, , Aspergillus duricaulis, Aspergillus nidulans Aspergillus. parasiticus ,Aspergillus fumigatus, Aspergillus. brasiliensis ,Aspergillus heteromorphus , Curvularia lunata, Penicillium sp., Fusarium oxysporum, , Alternaria alternate, Cladosporium sp. Trichoderma sp., Mucor, Rhizopus sp., Rhodotorula mucilaginosa, , Stachybotrys and yeast. Among the isolated species Aspergillus niger, was the most abundant (14.92%) followed by Aspergillus flavus (10.14%), while less abundant (0.95 & 0.63 %) Cladosporium sp. &, Mucor respectively. The higher demoralization of fungal growth was recorded at 8mg/ml concentration of Zirconium oxide nanoparticles which was (3.8cm) in molds Aspergillus niger, Aspergillus. flavus, , & Aspergillus. brasiliensis


2021 ◽  
Vol 11 (3) ◽  
pp. 279-284
Author(s):  
Dipannita Deka ◽  
◽  
Pinky Bora ◽  
Nameirakpam Nirjanta Devi ◽  
Mayuri Chabukdhara ◽  
...  

Heavy metal pollution in the aquatic ecosystem poses a serious threat to the human health and aquatic biodiversity around. There is urgent need to remediate heavy metals contaminated wastewater through eco friendly ways. Fungi and other microorganisms have been reported to have promising potential to remove heavy metals from wastewater through biosorption. Thus the present work aimed to isolate tolerant fungal species from different sites of a polluted river Bharalu in Assam. After preliminary screening, out of a total of 15 fungal isolates obtained, 4 isolates Aspergillus niger, Aspergillus flavus, Aspergillus fumigates and Colletotrichum gloeosporioides were selected for further study. Tolerance limit of the isolates for Cadmium (Cd) was carried out at concentrations ranging from 100 ppm to 1000 ppm. Results showed that the maximum tolerance was observed in Colletotrichum gloeosporioides (approx. 8.8 mm), followed by Aspergillus flavus (approx. 5.8 mm) at 400ppm. The biosorption efficiency at 400ppm revealed that the maximum Cd concentration was absorbed by fungal biomass of Colletotrichum gloeosporioides (12.83 mg/g) and the minimum by Aspergillus niger (3.91 mg/g). Molecular identification was carried out followed by PCR amplification of the fungal biomass showing highest absorption. The sequence obtained was submitted in the GenBank using BANkIt with accession number-MN714368 which showed high similarities with Colletotrichum gloeosporioides. This results indicated that fungus are promising and potential sources for metal biosorption and detoxification.


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)


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