Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2020, Vol. 41 ›› Issue (11): 2273-2279.DOI: 10.3969/j.issn.1000-2561.2020.11.018

• Plant Protection & Bio-safety • Previous Articles     Next Articles

Effects of Different Cassava Cultivars on Antioxidant Enzyme Activities of Paracoccus marginatus

CHEN Qian1,2,LIANG Xiao2,WU Chunling2,CHEN Qing2,*(),LIU Ying2,ZHANG Zhe2   

  1. 1. School of Forestry, Hainan University, Haikou, Hainan 570228, China
    2. Environment and Plant Protection Institute, China Academy of Tropical Agricultural Sciences / Key Laboratory of Pests Comprehensive Governance for Tropical Crops, Ministry of Agriculture and Rural Affairs / Hainan Engineering Research Center for Biological Control of Tropical Crops Diseases and Insect Pests / Hainan Key Laboratory for Monitoring and Control of Tropical Agricultural Pests, Haikou, Hainan 571101, China
  • Received:2019-10-12 Revised:2020-01-19 Online:2020-11-25 Published:2020-12-23
  • Contact: CHEN Qing


To study the selective mechanism of Paracoccus marginatus to different cassava cultivars, the activity change of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) and polyphenol oxidase (PPO) in P. marginatus after feeding on different cassava cultivars for 1, 2 and 4 days were determined by spectrophotometry. The results showed that the activity of antioxidant enzyme showed significant difference while P. marginatus feeding on different cassava cultivars. The activity of SOD in P. marginatus was the lowest after feeding on ‘C1115’, the activity of CAT was the lowest after feeding on ‘SC8002’, and the activity of POD and PPO was the lowest after feeding on ‘SC8’. Furthermore, the activity of SOD, CAT, POD and PPO decreased significantly compared to those of the control after feeding on the ‘J1301’ ‘SC11’ ‘SC8002’ ‘Dongguan Hongwei’ ‘SC8’ ‘Myanmar’ and ‘C1115’ at any analysis time. The above cassava cultivars could inhibit the activity of antioxidant enzymes of P. marginatus, which could interfere their normal reactive oxygen species metabolism and probably possessed the resistance potential to P. marginatus .

Key words: Paracoccus marginatus, cassava cultivars, antioxidant enzyme, activity change

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