Effects of SRBSDV-infected rice plants on the fitness of vector and non-vector rice planthoppers

文献类型： 外文期刊

第一作者： Xu, Hong-Xing

作者： Xu, Hong-Xing;Zheng, Xu-Song;Yang, Ya-Jun;Zhang, Jue-feng;Lu, Zhong-Xian;He, Xiao-Chan

作者机构：

关键词： SRBSDV;Vector;Non-vector;Rice planthoppers;Fitness

期刊名称：JOURNAL OF ASIA-PACIFIC ENTOMOLOGY （ 影响因子：1.303； 五年影响因子：1.427 ）

ISSN： 1226-8615

年卷期： 2016 年 19 卷 3 期

页码：

收录情况： SCI

摘要： Southern rice black-streaked dwarf virus (SRBSDV) is a new member of the genus Fijivirus and transmitted by whitebacked planthopper (WBPH), Sogatella furcifera (Horvath). The rice area affected by SRBSDV and the subsequent damages are increasing rapidly. In current study, we evaluated the effects of SRBSDV-infected plants on the ecological fitness and the tolerance to adverse environmental factors of vector WBPH and non-vector brown planthopper (BPH), Nilaparvata lugens (Stal). Our study revealed that the fitness of WBPH and BPH were both influenced by feeding on SRBSDV-infected rice. Fecundity of WBPH feeding on the SRBSDV-infected rice plants were higher than those on healthy plants, nymphal duration of male WBPH prolonged markedly by 0.77 d (P < 0.05), while the weight of brachypterous female adults significantly decreased (P < 0.05), and the average survival time shortened both at 26 degrees C and 31 degrees C, respectively. Median lethal time of WBPH on SRBSDV-infected and healthy rice plants were 80 h and 112 h at 26 degrees C, 64 h and 88 h at 31 degrees C, respectively. As for non-vector BPH, nymph survival rate decreased significantly by 11.22% (P < 0.05) and the longevity of female adults also shortened (P < 0.05), while hatchability of BPH eggs increased (P < 0.05). Survival time of BPH feeding on healthy rice at 26 degrees C was significant longer than those feeding on healthy and infected rice at 31 degrees C. The above results imply that the vector WBPH suffers much stronger effects than non-vector BPH from feeding on SRBSDV-infected rice plants. (C) 2016 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection Society. Published by Elsevier B.V. All rights reserved.

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