Phomopsis longanae Chi-induced pericarp browning and disease development of harvested longan fruit in association with energy status |
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| Institution: | 1. Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;2. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;3. College of Plant Protection, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;1. Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. Guangdong Key Laboratory for Postharvest Science, College of Horticultural Science, South China Agricultural University, Guangzhou 510642, PR China;4. Laboratory of Fruit Quality Biology/The State Agriculture Ministry Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Zhejiang University, Zijingang Campus, Hangzhou 310058, PR China;5. Food Research Center, Agriculture and Agri-Food Canada, Guelph, Ontario, Canada N1G 5C9;1. Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;2. Guelph Food Research Center, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada;1. Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;2. Guelph Food Research Center, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada;1. Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China;2. Food Science Program, Division of Food System & Bioengineering, University of Missouri, Columbia, MO 65211-5160, USA;3. Department of Food Science and Technology, University of Georgia, 1109 Experiment Street, Griffin, GA 30223, USA |
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| Abstract: | The effects of Phomopsis longanae Chi infection on browning development and disease incidence in relation to energy status in pericarp of harvested longan fruit were investigated. Longan fruit were inoculated for 5 min with P. longanae at 104 spores mL?1, while fruit dipped in sterile deionized water were used as control. These fruits were stored at (28 ± 1) °C and 90% relative humidity for up to five days. The results showed that the browning index, disease incidence, cellular membrane permeability and AMP content increased but the contents of ATP and ADP, and energy charge decreased in pericarp of longan fruit infected by P. longanae. It was suggested that P. longanae infection caused energy deficiency in longan fruit, possibly resulting in accelerated senescence and decreased resistance to pathogen, and thus promoted browning development and disease occurrence. |
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| Keywords: | Pericarp browning Disease Energy status Cellular membrane permeability |
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