Biological control agents and chemical inducers of resistance for postharvest control of Penicillium expansum Link. on apple fruit |
| |
| Authors: | Mara Quaglia Luisa Ederli Stefania Pasqualini Antonio Zazzerini |
| |
| Affiliation: | 1. Department of Agricultural and Environmental Sciences, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy;2. Department of Applied Biology, University of Perugia, Borgo XX Giugno 74, I-06121 Perugia, Italy;1. Department of Plant Protection, Shandong Agricultural University, Tai’an, Shandong 271018, PR China;2. Cotton Research Center, Shandong Academy of Agricultural Sciences, Jinan, Shandong 250100, PR China;1. Food Technology Department, University of Lleida, XaRTA-Postharvest, Agrotecnio Center, Rovira Roure 191, 25198 Lleida, Catalonia, Spain;2. IRTA, XaRTA-Postharvest, Edifici Fruitcentre, Parc Científic i Tecnològic Agroalimentari de Lleida, Parc de Gardeny, 25003, Lleida, Catalonia, Spain;1. Fruit and Postharvest Pathology Research Programme, Department of Plant Pathology, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa;2. Agricultural Research Council – Infruitec/Nietvoorbij, Private Bag X5026, Stellenbosch 7600, South Africa;1. Planta Piloto de Procesos Industriales Microbiológicos – Consejo Nacional de Investigaciones Científicas y Técnicas, Av. Belgrano y Pje. Caseros, 4000 Tucumán, Argentina;2. Laboratorio de Desarrollo e Investigación, SA San Miguel. Lavalle 4001, 4000 Tucumán, Argentina;3. Instituto de Microbiología, Facultad de Bioquímica, Química y Farmacia, Universidad Nacional de Tucumán, Ayacucho 471, 4000 Tucumán, Argentina;1. College of Food Science, Southwest University, Chongqing 400715, PR China;2. Chongqing Special Food Programme and Technology Research Center, Chongqing 400715, PR China |
| |
| Abstract: | Penicillium expansum Link. is the causal agent of apple blue mold, and it can cause severe loss of stored fruit. The use of fungicides is still the major means for postharvest control of this disease. In the present study, we investigated the effectiveness of biological control agents (BCAs) and/or induction of resistance for postharvest control of blue mold on apple (Malus domestica L. cv Golden Delicious). The BCAs and chemical inducers of resistance tested had direct effects against P. expansum, significantly reducing the percentages of infection and/or lesion sizes when applied directly against this pathogen. The antifungal activities of acibenzolar-S-methyl, β-aminobutyric acid and methyl jasmonate were also confirmed in vitro against P. expansum and Trichoderma atroviride P1. Treatments with BCAs and chemical inducers of resistance did not control infection on the untreated wounds that were made 1 cm from the original treated wounds. However, reverse-transcription PCR showed that treatments with Pseudomonas syringae pv. syringae 1,3S and acibenzolar-S-methyl induced significant increases in the levels of gene transcripts of the pathogenesis-related proteins PR-1a, PR-2, PR-5 and PR-8 in apple peel, as compared to controls. Moreover, immunoblotting showed an accumulation of PR-2 and PR-5 proteins in treated samples. These data indicate that these treatments trigger resistance responses in the apple fruit, although these responses do not limit the infection. Thus, biological control is confirmed as one of the most promising alternatives for postharvest control of blue mold on apple, while the induction of resistance does not appear to be a useful approach here. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
