Journal
POSTHARVEST BIOLOGY AND TECHNOLOGY
Volume 93, Issue -, Pages 24-28Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.postharvbio.2014.02.003
Keywords
Longan (Dimocarpus longan Lour.); Pericarp browning; Disease; Energy status; Cellular membrane permeability; Phomopsis longanae Chi
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Funding
- National Natural Science Foundation of China [30671464, 30972070, 311711776, 31201445]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20123515120016, 20133515110014]
- Natural Science Foundation of Fujian Province of China [2011J01079, 2012J05040]
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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 10(4) spores mL(-1), while fruit dipped in sterile deionized water were used as control. These fruits were stored at (28 +/- 1)degrees 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. (C) 2014 Elsevier B.V. All rights reserved.
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