The Chemical Control of Postharvest Diseases: Subtropical and Tropical Fruits

Eckert, and J W; Ogawa, J. M.

doi:10.1146/annurev.py.23.090185.002225

Cited by 151 publications

(61 citation statements)

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“…Unfortunately, in developing countries, losses during transportation and storage of citrus fruits were estimated at over 50% of the harvested crop due to the lack of adequate protection measures (Eckert and Ogawa, 1985;Wisniewski and Wilson, 1992). Major postharvest losses due to their association with a variety of pathogens have been recorded on the export markets.…”

Section: Introductionmentioning

confidence: 99%

Efficacy assessment of Pichia guilliermondii strain Z1, a new biocontrol agent, against citrus blue mould in Morocco under the influence of temperature and relative humidity

et al. 2011

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a b s t r a c tThe interactions of Penicillium italicum, which causes blue mould, and antagonistic yeast Pichia guilliermondii strain Z1 were examined in controlled environments, to determine the influence of relative humidity (RH) (45%, 75%, 85%, 98%, and 100%) and temperature (T) (5, 10, 15, 20, and 25°C). All main effects and interactions were significant (P 6 0.05), with the exception of interactions RHÂT and strain Z1 (BCA)ÂRHÂT. In the pathogen control, the lesion diameter of blue mould developed under all environmental conditions but was the largest at a RH range between 98% and 100%, independent of the temperature. The efficacy of strain Z1 appeared to be independent of the environment and reduced disease incidence by more than 85% in all environmental conditions. Rapid colonization of the antagonistic yeast strain Z1 on citrus wounded sites was recorded during the first week at 5°C. Colonization then stabilized at ±6.9 Â 10 6 CFU/ml for 30 days. This indicates that P. guilliermondii is able to adapt itself and colonize the wound sites prior to the arrival of the pathogen, displaying greater efficiency than when colonizing wounds after pathogen. The antagonist was capable of growing in low concentrations of orange juice (0.1-5%), with greatest growth at 5%. Applying strain Z1 (1 Â 10 8 CFU/ml) as a formulated product significantly reduced the incidence of infected fruits and the percentage of infected wounds relative to the pathogen control. Disease control with formulated product (45%) was slightly lower than that obtained with thiabendazole (20%) or strain Z1 culturable cells (25%). These results suggest that strain Z1 may be a useful BCA for control of blue mould under varying environmental conditions, and control may be enhanced by combining with other eco-friendly post-harvest treatments or improved formulation.

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Section: Introductionmentioning

confidence: 99%

Efficacy assessment of Pichia guilliermondii strain Z1, a new biocontrol agent, against citrus blue mould in Morocco under the influence of temperature and relative humidity

et al. 2011

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“…Para reduzir os prejuízos, métodos físicos, químicos e biológicos vêm sendo empregados, visando o controle deste grupo de doenças (Eckert & Ogawa, 1985;Wilson & Wisniewski, 1994;Sitton & Patterson, 1992). Os métodos físico e biológico se constituem em alternativas viáveis e desejáveis em relação ao químico tradicional, principalmente em função de não deixarem resíduos tóxicos nos frutos tratados.…”

Section: Introductionunclassified

Efeito inibitório de extratos vegetais sobre Colletotrichum gloeosporioides - agente causal da podridão de frutos de mamoeiro

Ribeiro

Bedendo

1999

Sci. agric. (Piracicaba, Braz.)

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RESUMO: Extratos aquosos foram obtidos a partir de bulbilhos de alho, folhas de hortelã e mamona e frutos de pimenta. Após a incorporação destes extratos em BDA, obtendo-se concentrações de 100, 200, 500, 1000, 5000 e 10000 ppm, foi avaliado o crescimento e a produção de conídios de um isolado de Colletotrichum gloeosporioides, agente de podridão em frutos de mamoeiro. Os resultados demonstraram o efeito inibitório dos diferentes extratos a partir da concentração de 200 ppm. O extrato de alho inibiu o crescimento micelial, em porcentagens variáveis de 5,3 a 67,6%, porém não atuou de modo expressivo sobre a produção de conídios. Em contraposição, os extratos de hortelã, mamona e pimenta promoveram inibição menos acentuada do crescimento de micélio, porém reduziram drasticamente a produção de conídios em níveis variáveis de 41 a 84%, de acordo com as concentrações crescentes dos mesmos. As propriedades fungitóxicas detectadas nos extratos utilizados no ensaio evidenciaram o uso potencial dos mesmos como alternativa aos métodos físicos e químicos convencionalmente usados para o controle da doença. Palavras-chave: Colletotrichum gloeosporioides, extrato vegetal, pós-colheita INHIBITORY EFFECT OF PLANT EXTRACTS ON Colletotrichum Gloeosporioides -THE CAUSAL AGENT OF POSTHARVEST ROT IN PAPAYA FRUITSABSTRACT: To evaluate the effect of plant extracts on the growth and the sporulation of Colletotrichum gloeosporioides, aqueous extracts from garlic, pippermint, castor bean and pepper were obtained and incorporated into potato-dextrose-agar (PDA) at concentrations of 100, 200, 500, 1000, 5000 and 10000 mg/g. Micelial growth and the conidium production were evaluated in these media. All extracts exhibited inhibitory effect at the concentration of 200 mg/g and above. Garlic extracts inhibited micelial growth in the range of 5.3 to 67.6%, it had, however no effect on sporulation. Peppermint, castor bean and pepper extracts promoted micelium inhibition and reduced the conidium production in the range of 41 to 84%, according to the extract concentrations. It was demonstrated that the different extracts have antifungal activities and that they have a potential use as an alternative control in relation to physical or chemical methods.

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“…The deterioration of food by fungi results in economical losses ranging from 5 to 20% of the production in developed countries and can be as high as 50% in regions with a tropical climate (7,10,23). It is estimated that up to half of all fruits harvested is lost due to fungal and pests decay worldwide (3).…”

Section: Introductionmentioning

confidence: 99%

Biological control of Penicillium italicum, P. digitatum and P. expansum by the predacious yeast Saccharomycopsis schoenii on oranges

Pimenta

Silva

et al. 2008

Braz. J. Microbiol.

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In this study we evaluated the ability of Saccharomycopsis schoenii Nadson and Krassiln (UWO-PS 80-91) as biocontrol agent against plant pathogenic filamentous fungi P. expansum Link (UFMG 01-2002), P. italicum Wehmer (LCP 61.1199), and P. digitatum (Pers.: Fr.) (LCP 984263, LCP 68175 and LCP 4354). S. schoenii was able to reduce disease severity in oranges inoculated with all fungi. Among the phytopathogens, P. digitatum LCP4354 was the most virulent whereas P. digitatum LCP 68175 was the most susceptible to predation. The yeast was able to survive for 21 days on the fruit surface and did not produce lesions on oranges. Production of antagonistic substances by S. schoenii was not detected using standard techniques. Our results point to the potential use of S. schoenii to control postharvest phytopathogens in fruits.

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The Chemical Control of Postharvest Diseases: Subtropical and Tropical Fruits

Cited by 151 publications

References 41 publications

Efficacy assessment of Pichia guilliermondii strain Z1, a new biocontrol agent, against citrus blue mould in Morocco under the influence of temperature and relative humidity

Efficacy assessment of Pichia guilliermondii strain Z1, a new biocontrol agent, against citrus blue mould in Morocco under the influence of temperature and relative humidity

Efeito inibitório de extratos vegetais sobre Colletotrichum gloeosporioides - agente causal da podridão de frutos de mamoeiro

Biological control of Penicillium italicum, P. digitatum and P. expansum by the predacious yeast Saccharomycopsis schoenii on oranges

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