Journal
POSTHARVEST BIOLOGY AND TECHNOLOGY
Volume 143, Issue -, Pages 137-142Publisher
ELSEVIER
DOI: 10.1016/j.postharvbio.2018.05.002
Keywords
6-Benzylaminopurine; Litchi; Decay; Peronophythora litchii; Pericarp browning; Reactive oxygen species
Categories
Funding
- National Natural Science Foundation of China [31770726, 31772041, U1301211]
- Agro-Scientific Research in the Public Interest [201303073]
- Science and Technology Planning Project of Guangdong Province [2015B090901058]
- Science and Technology Planning Project of Guangzhou [201804020041, 201604020048]
- Talent Program of Guangdong Province [2014TX01N049]
- Guangdong Provincial Key Laboratory of Applied Botany, CAS
- Key Laboratory of Plant Resource Conservation and Sustainable Utilization, CAS
- Key Laboratory of Post-Harvest Handling of Fruits, Ministry of Agriculture
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6-Benzylaminopurine (BAP), a synthetic cytokinin, can elicit plant growth and development by stimulating cell division. In this study, the effects of BAP on decay and pericarp browning of harvested litchi fruit in relation to phenolics and ROS metabolism were investigated. Application of BAP significantly inhibited decay incidence of harvested litchi, associated with a direct inhibition on Peronophythora litchii, the major pathogenic fungi. In addition, BAP-treated fruit showed significantly lower pericarp browning, accompanied by reduced PPO activity, increased PAL activity and higher contents of anthocyanin and total phenolic compounds. Moreover, BAP reduced H2O2 accumulation and lipid peroxidation, which may account for browning inhibition to an extent. Furthermore, higher activities of SOD, CAT and APX and DPPH radical scavenging capacity in BAP-treated fruit possibly benefited reducing ROS accumulation and lipid peroxidation. Overall, application of BAP showed great potential to control decay and browning and extend shelf life of harvested litchi.
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