Mycoflora of strawberry in Ontario

1992 ◽  
Vol 70 (4) ◽  
pp. 846-852 ◽  
Author(s):  
M. A. McLean ◽  
J. C. Sutton
Keyword(s):  
Botrytis Cinerea ◽  
Developmental Stages ◽  
Mycelial Fungi ◽  
Fragaria Ananassa ◽  
Rhizopus Stolonifer ◽  
Fusarium Spp ◽  
Trichothecium Roseum ◽  
Colletotrichum Dematium ◽  
Agar Media ◽  
Penicillium Spp

Mycelial fungi associated with leaves, flowers, and fruits of strawberry (Fragaria × ananassa Duchesne) were monitored in a field plot from August 1986 to July 1987. The principal fungi found on leaves of various developmental stages were Alternaria alternata, Botrytis cinerea, Cladosporium spp., Colletotrichum dematium, Coniella fragariae, Epicoccum purpurascens, Gliocladium roseum, Gloeosporium sp., Gnomonia comari, Penicillium spp., Trichothecium roseum, and Verticillium spp. A majority of the fungi were observed more frequently on leaves that were washed and then plated on agar media than on leaves that were plated without washing. Trichothecium roseum, however, was found mainly on the unwashed leaves. Principal fungi on calyces, petals, and fruits were A. alternata, B. cinerea, Gloeosporium sp., Pencillium spp., T. roseum, and Verticillium spp. Other fungi variously found on the flowers and fruits included Rhizopus stolonifer, Paecilomyces spp., C. dematium, and Fusarium spp. Many of the fungi found frequently on the strawberry plants were present at most or all stages of development and decline of the various plant organs. The mycofloral observations are discussed in relation to the biocontrol of strawberry diseases. Key words: strawberry, mycoflora, Botrytis cinerea, population dynamics.

scholarly journals Uso de fungicidas en el manejo postcosecha de limón persa (Citrus Latifolia)

2018 ◽  
Vol 6 (2) ◽  
pp. 107-111
Author(s):  
María del Rosario Dávila Lezama ◽  
Néstor Manuel Lorenzo Flores ◽  
Teresita Ramírez Hernández ◽  
María Alva Ángel Lara ◽  
Carlos Jesús Real Garrido
Keyword(s):  
Botrytis Cinerea ◽  
Geotrichum Candidum ◽  
Penicillium Digitatum ◽  
Rhizopus Stolonifer ◽  
Penicillium Italicum ◽  
Citrus Latifolia ◽  
Penicillium Spp

Estudios realizados, han identificado que los hongos responsables que limitan la vida de anaquel de los cítricos son principalmente: Penicillium digitatum (55-80%); Penicillium italicum (2-30%); Alternaria citri y A. alternata (8-15%); Botrytis cinerea (8-20%): Colletotrichum gloesporioides (2.5-6%); Geotrichum candidum (2-3%); Rhizopus stolonifer y R. oryzae (1-3%); Phytophtora citrophtora (2%) (Salvador et al., 2007). El objetivo del experimento Evaluar la efectividad de dos fingicidas  para el control de enfermedades provocadas por hongos en limón persa (Citrus latifolia) en postcosecha. El Proyecto se realizó en Cuajilote, Cuitláhuac, Ver. Trasladando las muestras al laboratorio general número 4 de la Facultad de Ciencias Biológicas y Agropecuarias, región Orizaba-Córdoba, de la Universidad Veracruzana. Los tratamientos donde se aplicaron los fungicidas Bankit Gold® (Azoxystrobin + Fludioxonil) y Magnate Sulphate® (Imazalil) en limón persa (Citrus latifolia) en el proceso de postcosecha, no tuvieron presencia de patógenos que provocan daños en el fruto por lo cual los fungicidas cumplieron con su objetivo, sin embargo, el tratamiento 1 (testigo absoluto) tuvo presencia del patógeno Penicillium spp. en su evaluación a los 30 DDA, esto, basándonos en los resultados de los análisis microbiológicos de limón persa (Citrus latifolia), la contaminación por Penicillium spp. probablemente fue en el almacenamiento del limón persa (Citrus latifolia). Respecto a los resultados de las propiedades fisicoquímicas están dentro los parámetros de calidad.

scholarly journals Prompt Cooling Reduces Incidence and Severity of Decay Caused by Botrytis cinerea and Rhizopus stolonifer in Strawberry

2005 ◽  
Vol 15 (1) ◽  
pp. 153-156 ◽  
Author(s):  
M.C.N. Nunes ◽  
A.M.M.B. Morais ◽  
J.K. Brecht ◽  
S.A. Sargent ◽  
J.A. Bartz
Keyword(s):  
Botrytis Cinerea ◽  
Fruit Rot ◽  
Temperature Management ◽  
Fragaria Ananassa ◽  
Rhizopus Stolonifer ◽  
Postharvest Decay ◽  
Forced Air ◽  
Subsequent Storage ◽  
Simulated Market ◽  
Rhizopus Rot

Delays in initiating the cooling of freshly harvested `Chandler' strawberries (Fragaria ×ananassa) were compared with prompt cooling to determine how such handling affected development of postharvest decays during subsequent storage and marketing. Strawberries at the three-quarter to full red ripeness stages were harvested four times between mid-June and late July, inoculated with Botrytis cinerea or Rhizopus stolonifer and then handled to simulate prompt or delayed precooling prior to storage. This was done by incubating fruit at 35 °C (95.0 °F) and 70% to 80% relative humidity (RH) for 1 or 6 hours. The fruit were then forced-air cooled to 5 °C (41.0 °F) in 1 hour and stored for 7 days at 2 °C (35.6 °F) and 85% to 95% RH, plus displayed in a simulated market at 20 °C (68.0 °F) and 85% RH for 1 day. Decay incidence increased as the season progressed. For non-inoculated fruit, prompt cooling reduced the incidence of decay by an average of 25% and the decay severity by ∼24%. With inoculated fruit, prompt cooling resulted in 15% and 29% decreases in the incidence and severity, respectively, of rhizopus rot compared to delayed cooling, and 5% and 22% decreases in the incidence and severity, respectively, of botrytis rot. Overall, the incidence of botrytis and rhizopus fruit rot averaged 60% and 85% in the prompt and delayed cooling treatments, respectively. Although prompt cooling is important for minimizing postharvest decay of strawberries, temperature management alone may not sufficiently control postharvest decay when decay pressure is high.

scholarly journals Management of seed borne fungal pathogens of okra collected from seed companies

2016 ◽  
Vol 1 (3) ◽  
pp. 628-640
Author(s):  
GM Kibria Hossain ◽  
SM Ahsan ◽  
Tanjila Ahmed
Keyword(s):  
Fungal Pathogens ◽  
Germination Percentage ◽  
Rhizopus Stolonifer ◽  
Control Seed ◽  
Colletotrichum Dematium ◽  
Seed Pathology ◽  
Vigour Index ◽  
Fungal Association ◽  
Penicillium Spp ◽  
Seed Extracts

Effect of mehogoni, mehedi and allamanda extracts were tested to control seed borne fungi of okra seeds collected from 6 companies of notunbazar in Mymensingh district. Prevalence of seed borne fungi was studied by blotter method in the Seed Pathology Center (SPC) and MS Laboratory, Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh. The highest germination percentage was recorded from ACI seeds (88%), while lowest (70%) in BADC seeds. Six predominant fungal genera were identified. These species were Fusarium oxysporum (5.08%), Aspergillus flavus (4.50%), Aspergillus niger (6.50%), Colletotrichum dematium (4.67%), Rhizopus stolonifer (3.33%) and Penicillium spp. (3.00%). Germination percentage and fungal association varied from company to company. The germination was ranged from 70-95% and infections were recorded 0.80-6.1% in all the treated seeds. Mehogoni extracts at the rate of 1:1 showed best performance in increasing seed germination (96.00%) next to allamanda (70%). Vigour index of okra seeds were increased 19.14% over untreated seeds by the treatment of mehogoni seed extracts at the rate of 1:1. Mehogoniseed extract at the rate of 1:1 seemed to be adoptable at the farmer?s level as an organic management practice.Asian J. Med. Biol. Res. December 2015, 1(3): 628-640

AISLAMIENTO DE HONGOS ASOCIADOS AL GRANO DE CAFÉ PROVENIENTES DE ZONAS PRODUCTORAS EN NORTE DE SANTANDER - COLOMBIA

2017 ◽  
Vol 14 (1) ◽  
pp. 45
Author(s):  
Angela P. Cajiao
Keyword(s):  
Fusarium Spp ◽  
Penicillium Spp

El comercio del café es uno de los renglones económicos más importantes a nivel mundial, sin embargo, también es susceptible a contaminaciones desde su cosecha hasta su transformación. Para la realización de este estudio se recolectaron muestras de café cereza procedentes de diferentes municipios productores de Norte de Santander y posteriormente en el laboratorio se aislaron y caracterizaron fenotípicamente los siguientes agentes fúngicos del grano de café: Aspergillus  spp., Penicillium spp., Fusarium spp., Cladosporium  spp., Mucor spp. y  Rhizopus spp. con ayuda de claves taxonómicas. Los hongos que presentaron una alta incidencia fueron Aspergillus spp. y Fusarium spp. Entre las tres variables fisicoquímicas analizadas en el café cereza (pH, actividad de agua, % de humedad) se puede afirmar con certeza que la actividad de agua y el porcentaje de humedad influyen directamente en el número y tipo de aislamientos fúngicos obtenidos. 

scholarly journals Avaliação da micoflora e ocorrência de micotoxinas em cascas de amendoim em diferentes estágios de maturação da vagem

2008 ◽  
Vol 32 (5) ◽  
pp. 1380-1386 ◽  
Author(s):  
Edlayne Gonçalez ◽  
Tiago Noel de Souza ◽  
Maria Helena Rossi ◽  
Joana D'arc Felicio ◽  
Benedito Corrêa
Keyword(s):  
Arachis Hypogaea ◽  
Aspergillus Flavus ◽  
Sao Paulo ◽  
São Paulo ◽  
Fusarium Spp ◽  
Arachis Hypogaea L ◽  
Penicillium Spp

As cascas de amendoim (Arachis hypogaea L.) são de grande importância para confecção de cama de frangos, de gado de leite e como fonte de fibras para ruminantes, portanto a elucidação dos mecanismos de contaminação por fungos toxigênicos e por micotoxinas em amendoim é imprescindível, especialmente para que medidas preventivas possam ser tomadas. Realizou-se, este trabalho, em Junqueirópolis, Estado de São Paulo, Brasil. Os principais fungos isolados nas cascas de amendoim foram Fusarium ssp. (78,75 %), Rhizopus ssp. (14,1 %) e A. flavus (11,75 %). No solo foram isolados Penicillium spp., Fusarium spp. e Aspergillus flavus, entre outros. Aflatoxinas foram detectadas em amostras de cascas de amendoim a partir do estágio de granação em concentrações que variaram de 5,42 μg/kg a 218,52 μg/kg. Ácido ciclopiazônico e fumonisinas B1 e B2 não foram detectadas. A presença de A. flavus e aflatoxinas nas amostras, revela a importância de um controle das cascas de amendoim antes de sua utilização. Boas práticas agrícolas são indicadas para região, uma vez que a contaminação das vagens ocorreu antes da colheita.

scholarly journals Infection Strategies Deployed by Botrytis cinerea, Fusarium acuminatum, and Rhizopus stolonifer as a Function of Tomato Fruit Ripening Stage

2019 ◽  
Vol 10 ◽  
Author(s):  
Stefan Petrasch ◽  
Christian J. Silva ◽  
Saskia D. Mesquida-Pesci ◽  
Karina Gallegos ◽  
Casper van den Abeele ◽  
...  
Keyword(s):  
Botrytis Cinerea ◽  
Fruit Ripening ◽  
Tomato Fruit ◽  
Rhizopus Stolonifer ◽  
Ripening Stage ◽  
Fusarium Acuminatum ◽  
Tomato Fruit Ripening

Control effects of Bacillus siamensis G-3 volatile compounds on raspberry postharvest diseases caused by Botrytis cinerea and Rhizopus stolonifer

2020 ◽  
Vol 141 ◽  
pp. 104135 ◽  
Author(s):  
Xiaoyu Zhang ◽  
Zhenfeng Gao ◽  
Xinxian Zhang ◽  
Wenbin Bai ◽  
Lixin Zhang ◽  
...  
Keyword(s):  
Volatile Compounds ◽  
Botrytis Cinerea ◽  
Rhizopus Stolonifer ◽  
Postharvest Diseases

Gray mold of strawberry (Fragaria ananassa) caused by a rare pink-colored isolate of Botrytis cinerea in China

2018 ◽  
Vol 47 (6) ◽  
pp. 587-589 ◽  
Author(s):  
M. Kamaruzzaman ◽  
Fangmin Hao ◽  
Mingde Wu ◽  
Guoqing Li
Keyword(s):  
Botrytis Cinerea ◽  
Gray Mold ◽  
Fragaria Ananassa

scholarly journals Populations of Botrytis cinerea and Penicillium spp. on Pear Fruit, and in Orchards and Packinghouses, and Their Relationship to Postharvest Decay

Plant Disease ◽  
2003 ◽  
Vol 87 (6) ◽  
pp. 639-644 ◽  
Author(s):  
Cheryl L. Lennox ◽  
Robert A. Spotts ◽  
Louis A. Cervantes
Keyword(s):  
Botrytis Cinerea ◽  
Gray Mold ◽  
Pear Fruit ◽  
Inoculum Level ◽  
Postharvest Decay ◽  
Orchard Soil ◽  
Population Sizes ◽  
Positive Correlations ◽  
The Relationship ◽  
Penicillium Spp

The aims of this study were to examine the sources and population sizes of Botrytis cinerea and Penicillium spp. in ‘d'Anjou’ pear orchards, packinghouses, and storage, and to determine the relationship between population sizes and postharvest decay. Densities of B. cinerea ranged from nondetectable to 4.0 CFU/cm2 on fruit, nondetectable to 3.1 CFU/liter in orchard air, and nondetectable to 1,167 CFU/g in orchard litter. The majority of packinghouse air and orchard soil samples collected yielded no B. cinerea inoculum. Densities of Penicillium spp. ranged from nondetectable to 2.7 CFU/cm2 on pear fruit, nondetectable to 3.13 CFU/liter in orchard air, nondetectable to 11.8 CFU/liter in packingline air, nondetectable to 3.9 CFU/liter in cold-storage air, 38 to 431 CFU/g in orchard soil, and 131 to 1,128 CFU/g in orchard litter. The mean incidence of gray mold in stored d'Anjou pear fruit ranged from 0.7 to 10.7%. Incidence of blue mold ranged from 0 to 16.5%. Significant positive correlations were observed between decay and fruit surface populations of B. cinerea and Penicillium spp. In conclusion, inoculum levels of these important postharvest pathogens in orchard and packinghouse air, and orchard soil and litter, cannot be used as indicators of postharvest decay; whereas the inoculum level on fruit surfaces may be a useful predictor of decay.

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