DNP and ATP induced alteration in disease development of Phomopsis longanae Chi-inoculated longan fruit by acting on energy status and reactive oxygen species production-scavenging system.
As compared with P. longanae-inoculated longans, DNP treatment for P. longanae-inoculated longans exhibited higher fruit disease index and pericarp browning index, lower ATP amount and energy charge level, lower activities of SOD, CAT and APX, lower amounts of AsA and GSH, lower levels of DPPH radical scavenging activity and reducing power, higher O2-generating rate and MDA amount. However, supply of ATP for P. longanae-inoculated longans showed the contrary effects. These results gave convincing evidence that DNP treatment for accelerating pericarp browning and disease development of harvested longans caused by P. longanae was due to decreases of energy production and ROS scavenging capacity, and increases of O2-accumulation and membrane lipid peroxidation. Whereas, supply of ATP for retarding pericarp browning and disease development of harvested longans caused by P. longanae was due to increases of energy production and ROS scavenging capacity, and reductions of O2-accumulation and membrane lipid peroxidation.
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Yifen
Y
Lin
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Mengyin
M
Chen
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China. Electronic address: hetonglin@163.com.
Hetong
H
Lin
Department of Food Science and Technology, University of Georgia, 1109 Experiment Street, Griffin, GA 30223, USA.
Yen-Con
YC
Hung
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Yixiong
Y
Lin
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Yihui
Y
Chen
Institute of Postharvest Technology of Agricultural Products, College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Hui
H
Wang
Guelph Food Research Center, Agriculture and Agri-Food Canada, Guelph, Ontario N1G 5C9, Canada.
John
J
Shi
D000255:Adenosine Triphosphate / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry*; D017382:Reactive Oxygen Species
D017382:Reactive Oxygen Species; D000255:Adenosine Triphosphate
2,4-Dinitrophenol (DNP); Active oxygen metabolism; Adenosine triphosphate (ATP); Disease development; Energy status; Longan (Dimocarpus longan Lour.) fruit; Pericarp browning; Phomopsis longanae Chi