scholarly journals Potencial antifúngico de quitosanases extracelulares de Fusarium solani FA14 contra os fitopatógenos Aspergillus niger, Colletotrichum gloeosporioides e Lasiodiplodia theobromae

2016 ◽  
Vol 12 (12) ◽  
Author(s):  
Samuel Alves Bezerra Neto ◽  
Lorena Nogueira Frota Da Costa ◽  
Erlândia Alves Magalhães ◽  
Francisco Lucas Alves Batista ◽  
Luiz Francisco Wemmenson Gonçalves Moura ◽  
...  
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Solani ◽  
Colletotrichum Gloeosporioides ◽  
Lasiodiplodia Theobromae ◽  
Penicillium Sp

O trabalho reporta o potencial antifúngico de quitosanases extracelulares do fungo Fusarium solani FA14 contra os fitopatógenos Aspergillus niger, Colletotrichum gloeosporioides e Lasiodiplodia theobromae.  Inicialmente, a cepa foi submetida a ensaio de atividade quitosanase (AQ) e se mostrou ativa, com valor de AQ igual a 1,1 significantemente igual (p<0,05) ao do controle positivo, Penicillium sp. Posteriormente a cepa foi empregada como fonte de quitosanases extracelulares para avaliar o percentual de inibição do crescimento (PIC) dos fungos Aspergillus niger, Colletotrichum gloeosporioides, Lasiodiplodia theobromae. Como resultado, o extrato enzimático de F. solani FA14 se mostrou ativo contra todos os fungos desafiados, com valores de PIC variando de 21 a 64%, significantemente maiores (p<0,05) do que os dos extratos do Penicillium sp. O extrato enzimático do F. solani FA14 apresentou atividade antifúngica mais expressiva contra o fitopatógeno Lasiodiplodia theobromae, com valor de PIC igual a 64%, significantemente maior (p<0,05) do que os dos extratos do Penicillium sp. (PIC = 50%). 

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

2019 ◽  
pp. 1-5
Author(s):  
S. Apuri ◽  
C. Kwoseh ◽  
E. A. Seweh ◽  
I. O. Tutu
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Flavus ◽  
Colletotrichum Gloeosporioides ◽  
Curvularia Lunata ◽  
Pathology Laboratory ◽  
Post Harvest ◽  
Penicillium Sp ◽  
East Region ◽  
Upper East Region ◽  
Percentage Incidence

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.

scholarly journals Actividad esporicida de la solución electrolizada con ph neutro en hongos de importancia postcosecha

2017 ◽  
pp. 3993
Author(s):  
Rafael Gómez Jaimes ◽  
Tania Villarreal Barajas ◽  
Alfonso Vásquez López ◽  
Amón Ignacio Arteaga Garibay ◽  
Jorge Alberto Osuna García
Keyword(s):  
Botrytis Cinerea ◽  
Fusarium Solani ◽  
Colletotrichum Gloeosporioides ◽  
Penicillium Digitatum ◽  
Monilinia Fructicola ◽  
Rhizopus Stolonifer ◽  
Penicillium Sp

  El agua electrolizada con pH neutro (7.0) es un novedoso agente antimicrobiano, que tiene efecto en una gran variedad de microorganismos, seguro para los seres humanos y el medio ambiente. Se determinó la eficacia del agua electrolizada de súper oxidación con pH neutro (SES) en la reducción de la germinación de esporas y desarrollo del tubo germinativo en hongos de importancia postcosecha. Una suspensión de 8X107esporas·mL-1 de los hongos Botrytis cinerea aislado de zarzamora, Colletotrichum gloeosporioides aislado de mango, guayaba y lichi, Fusarium solani aislado de chile y estevia, Monilinia fructicola aislado de durazno, Penicillium digitatum aislado de limón mexicano y limón persa, Penicillium sp. aislado de papaya y Rhizopus stolonifer aislado de yaca y guanábana, estuvieron en contacto con la SES por 5 minutos a concentraciones de 3, 5, 6, 8, 18, 24, 27, 29, 36 y 43 ppm de cloro libre, y agua destilada estéril (testigo). Las esporas se sembraron en medio de cultivo papa dextrosa agar (Bioxon®); las evaluaciones se realizaron a las 24 y 48 horas posteriores a la siembra. La inhibición del 100 % en la germinación de esporas y longitud del tubo germinativo de Botrytis se observó en el rango de concentración de 18-43 ppm, Colletotrichum (6-43 ppm), Fusarium (6-43 ppm), Monilinia (8 y 24-43 ppm), Penicillium (18-43 ppm), Rhizopus aislado de guanábana (5-24 y 29-43 ppm) y Rhizopus de yaca (18-43 ppm). Los resultados sugieren que la SES podría ser utilizada como alternativa de control de hongos postcosecha.    

scholarly journals Association of Fungi with Breadfruit (Artocarpus altilis Fosb.)

2012 ◽  
Vol 36 (1) ◽  
pp. 143-146
Author(s):  
Shamim Shamsi ◽  
Razia Sultana ◽  
Yasmin Fatema
Keyword(s):  
Aspergillus Niger ◽  
Aspergillus Flavus ◽  
Alternaria Alternata ◽  
Colletotrichum Gloeosporioides ◽  
Curvularia Lunata ◽  
First Report ◽  
Artocarpus Altilis ◽  
Penicillium Sp ◽  
Academy Of Sciences

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

scholarly journals Effet antifongique de deux extraits de plantes sur les agents pathogènes identifiés sur des fruits de l’anacardier (Anacardium occidentale L.) au Nord Cameroun

2021 ◽  
Vol 15 (3) ◽  
pp. 1121-1139
Author(s):  
Aurélie Irène Claire Ngobisa Nyaka ◽  
Sine Nsangou Mfiya Zahrah Fadimatou ◽  
Camille Ulrich Dzoyem Dzokouo ◽  
Sali Bourou ◽  
Aoudou Yaouba
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Solani ◽  
Colletotrichum Gloeosporioides ◽  
Anacardium Occidentale ◽  
Neem Oil ◽  
Antifungal Effect ◽  
Pathogenicity Tests ◽  
Cashew Tree

L’anacardier (Anacardium occidentale L.), importante culture de rente, est confrontée à la menace de nombreux pathogènes qui entravent sa productivité au Cameroun. Dès lors, cette étude se propose de déterminer le potentiel d’une lutte biologique à base d’extraits végétaux sur les champignons pathogènes identifiés sur des fruits prélevés dans le bassin de la Benoué. Pour atteindre ces objectifs, l’identification des agents pathogènes des fruits, des tests de pathogénicité et l’évaluation de l’effet antifongique in vitro et in vivo des extraits de piments et de neem ont été effectués. Les résultats ont montré que ces fruits abritent une diversité d’espèces fongiques dont les principales sont Colletotrichum gloeosporioides, Oïdium anacardii, Fusarium solani, Aspergillus niger et Phytophthora sp. Les tests de pathogénicité ont produit les symptômes des maladies observées sur le terrain. L’huile de neem et les extrait de piment ont inhibé totalement la croissance de C. gloeosporioides, O. anacardii et A. niger aux doses respectives de 7,5% v/v et 75 mg/ml. Cependant, l'huile de neem s'est avérée plus efficace. Ces résultats représentent des sources d'information précieuses pour l’implémentation d'une stratégie de lutte intégrée contre les agents pathogènes de l’anacardier à l’origine de la baisse de sa productivité, affectant ainsi son potentiel économique. English Title: Antifungal effect of two plant extracts on pathogens identified on fruits of Cashew tree (Anacardium occidentale L.) in North Cameroon The Cashew tree (Anacardium occidentale L.), an important cash crop, is challenged by the proliferation of pathogens that affect its productivity in Cameroon. Therefore, this study aims to determine the potential of a biological control based on plant extracts on pathogenic fungi identified on fruits collected in the Benoué basin. To achieve these objectives, identification of fruit pathogens, pathogenicity tests and evaluation of the in vitro and in vivo antifungal effect of chilli and neem extracts were carried out. The results showed that these fruits harbour a diversity of fungal species, of which the main ones are Colletotrichum gloeosporioides, Oïdium anacardii, Fusarium solani, Aspergillus niger and Phytophthora sp. The pathogenicity tests have generated the symptoms of the diseases observed in the field. Neem oil and chilli extracts completely inhibited the growth of C. gloeosporioides, O. anacardii and A. niger at doses of 7.5% v/v and 75 mg/ml respectively. However, neem oil proved to be more effective. These results represent valuable sources of information for the implementation of an integrated pest management strategy against cashew pathogens that impede the productivity of the tree, thereby affecting its economic potential.

Biocatalytic application of nitrilases from Fusarium solani O1 and Aspergillus niger K10

2009 ◽  
Vol 59 (4) ◽  
pp. 243-247 ◽  
Author(s):  
Margit Winkler ◽  
Ondřej Kaplan ◽  
Vojtěch Vejvoda ◽  
Norbert Klempier ◽  
Ludmila Martínková
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Solani

scholarly journals Doenças fúngicas pós-colheita em mamões e laranjas comercializados na Central de Abastecimento do Recife

2003 ◽  
Vol 28 (5) ◽  
pp. 528-533 ◽  
Author(s):  
Suzana A. F. Dantas ◽  
Sônia M. A. Oliveira ◽  
Sami J. Michereff ◽  
Luciana C. Nascimento ◽  
Luciana M. S. Gurgel ◽  
...  
Keyword(s):  
Carica Papaya ◽  
Colletotrichum Gloeosporioides ◽  
Lasiodiplodia Theobromae ◽  
Citrus Spp

Doenças fúngicas pós-colheita constituem uma das principais causas de perdas durante a fase de comercialização de frutos tropicais. Frutos de mamão (Carica papaya) e laranja (Citrus spp.) foram analisados em relação à incidência de doenças fúngicas e freqüência das espécies patogênicas durante seis meses, na Central de Abastecimento de Recife, Estado de Pernambuco. As amostragens foram realizadas mensalmente, sendo avaliados 40 frutos de cada espécie, em cinco pontos de comercialização, totalizando 200 frutos/amostragem/espécie. Ocorreu uma grande diversidade de doenças em frutos de mamão, onde as incidências variaram entre 39,71% e 0,07%, com maior nível para a podridão peduncular. Em frutos de laranja a incidência de doenças variou entre 11,85% e 0,62%, para podridão peduncular por Lasiodiplodia spp. e antracnose, respectivamente. Os patógenos que apresentaram maiores freqüências foram Colletotrichum gloeosporioides (44,95%) em mamão e Lasiodiplodia theobromae (11,85%) em laranja. A diversidade de doenças constatada neste estudo sugere a necessidade do emprego de medidas de controle mais efetivas durante as fases de produção e pós-colheita de frutos de mamão e laranja, visando propiciar redução das perdas.

scholarly journals Khả năng hòa tan lân và đối kháng với nấm Fusarium solani của dòng nấm Aspergillus niger H4.7 ở điều kiện phòng thí nghiệm

2021 ◽  
Vol 57 (5) ◽  
pp. 148-161
Author(s):  
Thị Anh Thy Châu ◽  
Thị Yến Nhung Đặng ◽  
Khởi Nghĩa Nguyễn
Keyword(s):  
Aspergillus Niger ◽  
Fusarium Solani

Mục tiêu của nghiên cứu nhằm khảo sát khả năng hòa tan lân dưới một số điều kiện môi trường khác nhau và đối kháng với nấm bệnh Fusarium solani của dòng nấm Aspergillus niger H4.7 (H4.7) được phân lập từ đất nông nghiệp ở tỉnh Sóc Trăng ở điều kiện phòng thí nghiệm. Việc khảo sát khả năng hòa tan lân dưới các điều kiện môi trường gồm pH, nồng độ muối NaCl và các dạng lân khó tan khác (FePO4 và AlPO4) được thực hiện trong môi trường NBRIP lỏng, trong khi thí nghiệm khảo sát khả năng đối kháng của dòng nấm H4.7 với dòng nấm Fusarium solani gây bệnh hại cây trồng được thực hiện trên môi trường PDA. Kết quả nghiên cứu cho thấy dòng nấm H4.7 có khả năng hòa tan lân tốt trong môi trường nuôi cấy có pH=7, không bổ sung NaCl và hòa tan tốt các dạng lân khó tan theo thứ tự Ca3(PO4)2 > FePO4 > AlPO4. Ngoài ra, dòng nấm này còn có khả năng đối kháng tốt với dòng nấm Fusarium solani, đặc biệt ở thời điểm 5 ngày sau bố trí với hiệu suất đối kháng đạt 49,2%.

scholarly journals Mycoflora associated with two species of Liliaceae in Bangladesh

2013 ◽  
Vol 22 (1) ◽  
pp. 39-46
Author(s):  
Shamim Shamsi ◽  
Najmun Naher
Keyword(s):  
Fusarium Solani ◽  
Alternaria Alternata ◽  
New Record ◽  
Macrophomina Phaseolina ◽  
Fungal Species ◽  
Colletotrichum Orbiculare ◽  
Lasiodiplodia Theobromae ◽  
Colletotrichum Capsici ◽  
Colletotrichum Dematium

A total of nine fungi were isolated from two ornamental angiosperms, namely Hemerocallis fulva L. and Pancratium verecundum Ant. belong to Liliaceae. Three species of fungi were found to be associated with the leaf of Hemerocallis fulva. The fungi were Colletotrichum capsici, (Syd.) Bull. & Bisby, Colletotrichum dematium (Pers. Ex Fr.) and Glomerella montana (Sacc.)v Arx & E. Muller. Six species of fungi, namely Alternaria alternata (Fries) Keissler, Colletotrichum orbiculare (Berk & Mont.) Arex., Curvularia clavata Jain, Fusarium solani (Mort.) Sacc., Lasiodiplodia theobromae (Pat.) Griffon and Maubol and Macrophomina phaseolina (Tassi) Goid were found to be associated with P. verecundum. Among the fungal species Glomerella montana is new record for Bangladesh. Dhaka Univ. J. Biol. Sci. 22(1): 39-46, 2013 (January)

scholarly journals Principais doenças de Anonáceas no Brasil: descrição e controle

2014 ◽  
Vol 36 (spe1) ◽  
pp. 55-64 ◽  
Author(s):  
Nilton Tadeu Vilela Junqueira ◽  
Keize Pereira Junqueira
Keyword(s):  
Rhizoctonia Solani ◽  
Colletotrichum Gloeosporioides ◽  
Phytophthora Nicotianae ◽  
Rhizopus Stolonifer ◽  
Botryodiplodia Theobromae ◽  
Lasiodiplodia Theobromae

Várias doenças podem afetar folhas, caules, flores e frutos de gravioleira, pinheira e atemoia em diferentes estádios de seus desenvolvimentos. Geralmente, as doenças mais importantes são causadas por fungos durante o florescimento e a frutificação. Também podem ocorrer murchas ou podridões de raízes, causadas por nematoides e patógenos do solo. A antracnose (Colletotrichum gloeosporioides), murcha ou podridões de raízes (Rhizoctonia solani, Cylindrocladium clavatum, Phytophthora sp., Pythium sp., Phytophthora nicotianae var. parasitica, cancros (Albonectria rigidiuscula) e podridão de frutos (Botryodiplodia theobromae, sin. Lasiodiplodia theobromae) são as mais importantes. Por outro lado, a podridão-parda-do-fruto (Rhizopus stolonifer) provoca perdas expressivas na produção de graviola. A seguir, são descritas as principais doenças que afetam estas espécies de anonáceas, seus agentes causais e as medidas de controle.

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