Potential for biological control of Monilinia laxa in peach twigs

Melgarejo, P.; Carrillo, Roberto; Sagasta, E.M.

doi:10.1016/0261-2194(86)90076-1

Cited by 60 publications

(37 citation statements)

References 8 publications

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“…Com exceção do ensaio de Melgarejo et al (18) cuja inoculação foi por meio da introdução de pedaços de meio BDA contendo micélio+conídios dos antagonistas em incisão no ramo, nos restantes, os fungos foram aplicados por meio de pulverizações conforme as realizadas neste trabalho contribuindo para a credibilidade no método escolhido. No entanto, para um próximo trabalho os mesmos tratamentos utilizados neste experimento deverão ser avaliados em aplicações na planta inteira, para melhor entendimento das interferências do meio nos antagonistas tais como: radiação UV, dessecação, rápidas mudanças climáticas e até à baixa disponibilidade de nutrientes, além da ação de produtos químicos comumente aplicados nos pomares (11,14).…”

Section: Resultsunclassified

Fungos antagonistas e efeito de produtos químicos no controle da podridão parda em pomar de pessegueiro

Moreira¹,

Mio²,

Valdebenito‐Sanhueza³

2008

Summa phytopathol.

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RESUMOPara verificar a eficiência de controladores biológicos e produtos qu ímic os p ara cont role da pod ridã o pa rda , foi conduzido um experimento a campo na safra de 2002 no município da Lapa-PR, com a cultivar BR-1. O objetivo do experimento foi fazer seleção de tratamentos com controle biológico comparando-os com químicos em sistemas de manejo utilizados na região. Como tratamentos foram utilizados quatro antagonistas previamente selecionados em trabalho de pós-colheita, isolados F1, F2, F4 (Trichothecium roseum), isolado F9 (Penicillium sp) (em 16 aplicações), sistema de Produção Integrada de Pêssegos (PIP) (nove aplicações), fosfitos de Ca e de K + captan (1 1 ap lica ções ), alternân cia de fungicid as (oit o ap lica ções ), tratamento convencional da propriedade (PC) (nove aplicações), pulverizados desde a floração até a colheita, sendo a testemunha sem Moreira, L.M.; May-De Mio, L.L.; Valdebenito-Sanhueza, R.M. Fungos antagonistas e efeito de produtos químicos no controle da podridão parda em pomar de pessegueiro. Summa Phytopathologica, v.34, n.3, p.272-276, 2008 pulverização. Para avaliação, foi contado o número de frutos por ramo marcado após o raleio e no início da colheita. Para os frutos colhidos nos ramos foi determinada a incidência da doença na colheita e aos 3 e 5 dias em pós-colheita. O PIP, fosfito+captan, e isolado F4, não diferirem estatisticamente do padrão PC, e reduziram 95,5; 63,6 e 68,2%, respectivamente a doença em relação à testemunha que apresentou 44% dos frutos com podridão parda aos cinco dias. O tratamento com a alternância de fungicidas foi o melhor, e não foram observados frutos com a doença, entretanto apresentou uma redução do número de frutos entre o raleio e a colheita de 76,5% contra 50% em média dos demais tratamentos indicando um provável efeito fitotóxico.A podridão parda do pessegueiro (Prunus persica (L.) Batsch) causada pelo fungo Monilinia fructicola (Wint) Honey é a principal doença desta cultura. A infecção tem início com a colonização das flores podendo progredir para os ramos, originando cancros, os quais podem fornecer inóculo para que ocorram infecções latentes em frutos imaturos e podridão nos pêssegos maduros. A partir de tais infecções ou após a ocorrência de danos causados nos frutos por insetos ou granizo, a podridão parda pode manifestar-se exibindo lesões nos períodos de pré-colheita, colheita e pós-colheita (10,13).O uso de fungicidas é o método de controle mais adotado na região ABSTRACTThe efficiency of biological controllers and chemical products in the control of brown rot was investigated in a field experiment during the 2002 growing season in the municipality of Lapa-PR. The cultivar BR1 was used in the experiment. The objective of the experiment was to select treatments with biological control by comparing them with chemical treatments in management systems used in the region. The treatments were four antagonistics previously selected in a postharvest study, the F1, F2, F4 isolates (Trichothecium roseum), F9 isolate (Penicillium sp) (in...

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Section: Resultsunclassified

Fungos antagonistas e efeito de produtos químicos no controle da podridão parda em pomar de pessegueiro

Moreira¹,

Mio²,

Valdebenito‐Sanhueza³

2008

Summa phytopathol.

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“…In Europe, M. laxa is an important pathogen in peach, but damage is only serious in the flower and twig blight phase of the disease (Melgarejo et al, 1986;Sagasta, 1977). Although M. fructicola can cause wilting of flowers, Kable and Parker (1963) found that subsequent invasion of twigs in sour cherry was limited compared with M. laxa.…”

Section: Potential Pest Effects In the Risk Assessment Areamentioning

confidence: 99%

“…Biological agents, like Epicoccum nigrum and Penicillium frequentans, isolated from peach shoots (Melgarejo et al, 1986) have a high potential of controlling the disease caused by Monilinia spp. on fruit, shoots and twigs, particularly when applied prior to harvest at blossoming, fruit pit hardening and postharvest Guijarro et al, 2008;Larena et al, 2005;Mari et al, 2007).…”

Section: Pest Surviving the Existing Pest Management Proceduresmentioning

confidence: 99%

Pest risk assessment ofMonilinia fructicolafor the EU territory and identification and evaluation of risk management options

Rossi¹

2011

EFSA Journal

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The EFSA Panel on Plant Health has delivered a pest risk assessment on the risk posed by Monilinia fructicola to the EU territory and has identified risk management options and evaluated their effectiveness in reducing the risk to plant health posed by this organism. The Panel has also analysed the effectiveness of the special requirements presently listed in Annex IV, Part A, Section I of Council Directive 2000/29/EC, in reducing the risk of introduction of this pest into the EU territory. The Panel concluded that the main pathways for entry into the EU territory are plant material for propagation purposes and fruit of host genera and that, with the exception of dried fruit, the probability of entry is very likely. The probability of establishment is also very likely due to the suitable environmental conditions and to the widespread presence of host species, susceptible for most of the year, on most of the risk assessment area. Cultural practices and control measures currently applied and competition with other Monilinia species cannot prevent the establishment of M. fructicola. The probability of spread is very likely because of the multiple ways of dispersal of the pest. The overall impact in the endangered area is estimated to be moderate. Neither additional cultural measures nor increased fungicide treatments would be needed to control of brown rot in the orchard after the introduction of M. fructicola. © European Food Safety Authority, 2011 KEY WORDSBlossom and twig blight, brown rot, Monilia fructicola, Prunus spp., Rosaceae, stone fruit. Having given due consideration to the evidence, the Panel concludes that: a. Entry of M. fructicola by means of plant propagation material, fresh fruits of susceptible genera and by natural means from infested European non-EU countries is very likely. It is very unlikely in case of dried fruit and natural means from infested non-European countries.In both cases the level of uncertainty is low.b. Establishment of M. fructicola in the risk assessment area is very likely with a low level of uncertainty because of the avaialability of host plants with a long period of susceptibility and of suitable environmental conditions. Competition from other Monilinia species (M. laxa and M. fructigena) and currently applied cultural practices and control measures cannot prevent the establishment of the pest. In addition, the pest has already been detected in several Member States in the risk assessment area (France, Germany, Hungary, Italy, Poland, Romania, Slovenia and Spain).c. Spread of M. fructicola within the risk assessment area is very likely with a low level of uncertainty because of its multiple ways to spread (natural and human assisted), to the wide distribution of host species in the risk assessment area and the absence of effective barriers.

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“…P. frequentans increased the average percentage of surviving seedlings when inoculated together with Pythium vexans, but the increase was not significant (Yamaji et al 2004). The peach trees inoculated with P. frequentans inhibited the infection by a pathogenic fungus, M. laxa (Melgarejo et al 1986). P. frequentans produced antifungal frequentin and palitantin and inhibited spore germination and germ-tube growth of M. laxa (De Cal et al 1988).…”

Section: Pectinase and Cellulase Activitymentioning

confidence: 99%

Evaluation of certain Penicillium frequentans isolates against Cercospora leaf spot disease of sugar beet

El-Fawy

El-Sharkawy

Abo-Elyousr

2018

Egypt J Biol Pest Control

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The impact of six local isolates of Penicillium frequentans recovered from healthy sugar beet (Beta vulgaris L.) leaves was evaluated against Cercospora beticola, the causal pathogen of Cercospora sugar beet leaf spot under laboratory and field conditions. In in vitro studies, all the six isolates were able to inhibit the mycelial growth of C. beticola with variation in their antagonistic capability. P. frequentans isolates produce pectinase and cellulase at different degrees. There was a correlation between enzyme activity and the antagonistic ability for each isolate. The high antagonistic ability isolates had the most enzyme activity. In field studies, some adhesives such as agar, starch flour, white glue, gum, and commercial adhesive (Triton Mok) were added to conidia spore suspensions of P. frequentans at 1% to improve conidial adhesion to sugar beet plant surface. Data also showed that all adhesives increased (P = 0.05) the efficiency of the spore suspension of P. frequentans to control the disease. The starch flour at 1% gave a significant reduction in disease severity from 43.23 to 10.42% pre-infection and from 43.23 to 10.52% post-infection. The application of P. frequentans led to improved root yield and the sugar percent of sugar beet crop in two tested seasons.

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Potential for biological control of Monilinia laxa in peach twigs

Cited by 60 publications

References 8 publications

Fungos antagonistas e efeito de produtos químicos no controle da podridão parda em pomar de pessegueiro

Fungos antagonistas e efeito de produtos químicos no controle da podridão parda em pomar de pessegueiro

Pest risk assessment ofMonilinia fructicolafor the EU territory and identification and evaluation of risk management options

Evaluation of certain Penicillium frequentans isolates against Cercospora leaf spot disease of sugar beet

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