Search Results - Koch’s Postulates

Advances in the etiology of sweet potato (Ipomoea batatas (L.) Lam) yellow curling disease in Argentina by Flamarique, Sofía Solange, Vilanova Perez, Antonella, Luque, Andres Vicente, Rodriguez Pardina, Patricia, Di Feo, Liliana Del Valle

Subjects: “…Koch’s Postulates…”
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A report of meloidogyne arenaria parasitizing plantain (Musa spp., AAB) in Nigeria by Olajide, E., Kolombia, Y.A., Amah, D., Agogbua, J.U., Coyne, D., Swennen, R., Cortada, L., Bert, W.

“…Following the inoculation of population cultured, Koch’s postulates was fulfilled and the same symptoms observed. …”
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Postharvest Fruit rot of Persimmon (Diospyros kaki) in Spain Caused by Lasiodiplodia theobromae and Neofusicoccum spp. by Palou, Lluís, Montesinos-Herrero, Clara, Besada, Cristina, Taberner, Verònica

“…Pathogenicity of all three isolates was demonstrated by fulfilling Koch's postulates.…”
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Viroids as Companions of a Professional Career by Durán-Vila, Núria

“…Further biological assays are also essential to establish the relationship of a viroid with plant disease and to fulfill Koch's postulates.…”
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Poblaciones nativas de nematodos entomopatógenos (Rhabditida) en cuatro departamentos de Colombia by Melo Molina, E.L., Ortega Ojeda, CA, Susurluk, A, Gaigl, A, Bellotti, Anthony C.

“…After verifying the entomopathogenicity of the samples using Koch s postulates, we multiplied, stored and identified the EPN. …”
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Macrophomina phaseolina on the tropical cover crops Mucuna pruriens var. utilis by Berner, D.K., Killani, A.S., Aigbokhan, E.I., Couper, D.C.

“…M. phaseolina was reisolated and Koch's postulates proved. Tropical farm management increasingly relies on M. p. utilis as a rotational cover crop to restore fertility after cereal cultivation. …”
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Causal agent of red stripe disease of rice by Elazegui, F.A., Castilla, N.P., Dalisay, T.U., Mew, T.W.

“…The fungal isolate was reisolated from the lesions of inoculated plants and reinoculated on test plants that became symptomatic, thus fulfilling Koch's postulates. Based on the morphological characteristics of the fungus, the causal agent of red stripe was identified as a species of Gonatophragmium. …”
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Occurrence of spot blotch in spring barley caused by Bipolaris sorokiniana Shoem. in South-Eastern Kazakhstan by Dutbayev, Yerlan, Kuldybayev, Nurlan, Daugaliyeva, Saule, Ismailova, Elvira, Sultanova, Nadira, Özer, Göksel, Slyamova, Ayana, Mukin, Kadyrzhan, Dababat, Abdelfattah A., Yessimbekova, Minura

“…Inoculated seedlings showed clear symptoms of B. sorokiniana, and therefore, Koch’s postulates were fulfilled by reisolating the pathogen from artificially inoculated seedlings and identifying it based on standard morphology criteria. …”
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Incidence and etiology of postharvest diseases of fresh fruit of date palm (Phoenix dactylifera L.) in the grove of Elx (Spain) by Palou, Lluís, Rosales, Raquel, Taberner, Verònica, Vilella-Esplá, José

“…Their pathogenicity was demonstrated by fulfilling Koch’s postulates. Disease development at 20 and 5ºC was characterized on artificially inoculated dates…”
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Diversity and Pathogenicity of Fusarium temperatum Scaufl. & Munaut causing Fusarium ear rot of maize (Zea mays L.) in major maize growing agroecosystems of Ethiopia by Deressa, Temesgen, Girma Adugna, Mahabaleswara, Suresh L., Zelalem Bekeko, Vaughan, Martha, Opoku, Joseph

“…Pathogenicity test was conducted by inoculating healthy maize ears with F. temperatum macro-conidia suspension. Koch’s postulates were fulfilled by the pathogen (F. temperatum) re-isolation and identification. …”
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Identification and characterization of Pythium graminicola, causal agent of kikuyu yellows in Argentina by Grijalba, Pablo Enrique, Palmucci, Hemilse E., Guillin, Eduardo Alejandro

“…Pathogenicity tests were carried out and Koch’s postulates were fulfilled. This is the first report of P. graminicola causing kikuyu yellows in Argentina and in the world.…”
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Postharvest fungal diseases of loquat cv. ‘Algerie’ in Spain by Palou, Lluís, Sánchez-Torres, Paloma, Montesinos-Herrero, Clara, Taberner, Verònica

“…Pathogenicity of common isolates was demonstrated by fulfilling Koch’s postulates. Disease development was assessed on artificially inoculated loquats stored at either 20 or 5°C. …”
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Postharvest decay of loquat fruit (Eriobotrya japonica (Thunb.) Lindl.) in Spain by Palou, Lluís, Sánchez-Torres, Paloma, Montesinos-Herrero, Clara, Taberner, Verònica

“…Pathogenicity of common isolates was demonstrated by fulfilling Koch’s postulates. Disease development was assessed on artificially inoculated loquats stored at either 20 or 5°C. …”
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Morphological, pathological and phylogenetic analyses identify a diverse group of Colletotrichum spp. causing leaf, pod and flower diseases on the orphan legume African yam bean by Ogunsanya, O.M., Adebisi, M.A., Popoola, A.R., Afolabi, C.G., Oyatomi, O., Colgan, R., Armitage, A., Thompson, E., Abberton, M., Ortega-Beltran, A.

“…In all the samples examined, fungi from eight genera were isolated from diseased leaves, buds and pods. Koch's postulates were fulfilled only for fungi belonging to the Colletotrichum genus. …”
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Fusarium boothii, Fusarium meridionale, and Fusarium temperatum are emerging preharvest maize ear rot pathogens in Ethiopia by Deressa, Temesgen, Girma Adugna, Mahabaleswara, Suresh L., Zelalem Bekeko, Iriarte-Broders, Gloria, Vaughan, Martha, Proctor, Robert H., Mehl, Hillary Laureen, Prasanna, Boddupalli M., Opoku, Joseph

“…Based on phylogenetic analysis of the data, 37.3% of the isolates recovered from maize kernels were from three species that have not been reported previously in Ethiopia: Fusarium boothii (4.3%), F. meridionale (10.2%), and F. temperatum (22.8%). Completion of Koch’s postulates with selected isolates confirmed that these three species can cause maize ear rot. …”
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First confirmed report of Colletotrichum coccodes causing black dot on potato in Mexico by Pérez-Mora, Juan Luis, Cota-Rodríguez, David Alonso, Rodríguez-Palafox, Edgar Edel, García-León, Elizabeth, Beltrán-Peña, Hugo, Bernardi Lima, Nelson, Tovar Pedraza, Juan Manuel

“…Pathogenicity tests were conducted, and Koch’s postulates were fulfilled with two isolates of this fungus. …”
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Development of a full-genome cDNA clone of Citrus leaf blotch virus and infection of citrus plants by Vives, María C., Martin, Susana, Ambrós, Silvia, Renovell, Agueda, Navarro, Luis, Pina, José A., Moreno, Pedro, Guerri, José

“…CLBV isolates are associated with symptom production in citrus including leaf blotching of Dweet tangor and stem pitting in Etrog citron (Dweet mottle disease), and some isolates are associated with bud union crease on trifoliate rootstocks, but Koch's postulates for this virus were not fulfilled. …”
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Crop loss, aetiology, and epidemiology of citrus black spot in Ghana by Brentu, Francis C., Oduro, Kwadwo A., Offei, Samuel K., Odamtten, George T., Vicent, Antonio, Peres, Natalia A., Timmer, Lavern W.

“…The fungus was re-isolated from symptomatic, inoculated fruit completing Koch's postulates. Isolates of the endophyte G. mangiferae did not induce symptoms in the pathogenicity tests. …”
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Incidence and etiology of postharvest fungal diseases of loquat fruit (Eriobotrya japonica (Thunb.) Lindl. cv. ‘Algerie’) in Alacant province (Spain) by Palou, Lluís, Sánchez-Torres, Paloma, Montesinos-Herrero, Clara, Taberner, Verònica

“…Pathogenicity of selected isolates was demonstrated by fulfilling Koch’s postulates and disease development was assessed on artificially inoculated loquats stored at either 20 or 5 °C.…”
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Fungal pathogens causing postharvest decay of pomegranate fruit in Spain by Palou, Lluís, Vicent, Antonio

“…In all cases, fungi from symptomatic fruit were isolated, purified and identified by means of macroscopic and microscopic observation and molecular techniques. Pathogenicity (Koch’s postulates) and disease development at ambient and low temperatures were tested with pomegranates artificially inoculated with the fungi. …”
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