Increased activities of peroxidase and polyphenol oxidase enhance cassava resistance to Tetranychus urticae
文献类型: 外文期刊
第一作者: Liang, Xiao
作者: Liang, Xiao;Chen, Qing;Lu, Hui;Wu, Chunling;Lu, Fuping;Tang, Jihong;Liang, Xiao;Chen, Qing;Lu, Hui;Wu, Chunling;Lu, Fuping;Tang, Jihong;Liang, Xiao;Chen, Qing;Lu, Hui;Wu, Chunling;Lu, Fuping;Tang, Jihong;Liang, Xiao;Chen, Qing;Lu, Hui;Wu, Chunling;Lu, Fuping;Tang, Jihong
作者机构:
关键词: Peroxidase;Polyphenol oxidase;Cassava resistance;Tetranychus urticae
期刊名称:EXPERIMENTAL AND APPLIED ACAROLOGY ( 影响因子:2.132; 五年影响因子:2.196 )
ISSN:
年卷期:
页码:
收录情况: SCI
摘要: In order to study the function of peroxidase (POD) and polyphenol oxidase (PPO) in cassava resistance to spider mites, we tested the changes of transcription levels and activities of these two protective enzymes in both cassava and Tetranychus urticae (=T. cinnabarinus) during the interaction. The results showed that after damage of the mite-susceptible cassava cultivar BRA900 by T. urticae for 1 and 8 days, the transcription levels of MePOD and MePPO and the activities of POD and PPO showed no significant difference compared with those in undamaged leaves. However, the corresponding transcription levels and activities in 1- and 8-day-damaged leaves of mite-resistant cassava cultivar C1115 increased to a significant level of approximately twofold. When T. urticae fed on BRA900 for 1 and 8 days, the transcription levels of TcPPO and TcPOD and the activities of PPO and POD showed no significant difference compared with those before feeding. However, the corresponding transcription levels and activities of these two protective enzymes in T. urticae feeding on C1115 significantly decreased by about half. This study preliminarily validates the function of POD and PPO in cassava resistance to T. urticae, and provides candidate gene resource for molecular breeding of spider mite-resistant cassava.
分类号: Q959
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