Effects of Rice Black Streaked Dwarf Virus on&nbsp;&nbsp; Ecological Fitness of NonVector Planthopper, Sogatella fucifera&nbsp;

HE Xiaochan1,2, XU Hongxing2, ZHENG Xusong2, YANG Yajun2, GAO Guangchun2, PAN Jianhong2, LU Qiang3, LU Zongxian2,*

doi:10.3969/j.issn.10017216.2011.06.013

Chinese Journal OF Rice Science >

2011 , Vol. 25 >Issue 6: 654 - 658

DOI: https://doi.org/10.3969/j.issn.10017216.2011.06.013

Research Papers

Effects of Rice Black Streaked Dwarf Virus on Ecological Fitness of NonVector Planthopper, Sogatella fucifera

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¹ Department of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; ² Institute of Plant Protection and Microbiology, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China; ³ Jiaxing Academy of Agricultural Science, Jiaxing 314016, China;

Received date: 2011-05-25

Revised date: 2011-09-19

Online published: 2011-11-10

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Abstract

Rice black streak dwarf virus (RBSDV) transmitted by the small brown planthopper (SBPH), Laodelphax striatellus (Fallen), causes rice yield loss in east China. The whitebacked planthopper (WBPH), Sogatella fucifera (Horváth), a nonvector of RBSDV, usually shares the host rice plants with SBPH. We evaluated the effects of RBSDVinfested rice plants on the ecological fitness and relevant defense and detoxification enzymes of WBPH in laboratory for exploring the relationship between RBSDV and the nonvector insect. The results showed that the nymph survival rate, sex ratio, female adult weight and fecundity, and egg hatchability of WBPH fed on RBSDVinfested rice plants did not markedly differ from those on healthy plants, whereas the adult longevity and egg duration were significantly shortened. Furthermore, the activities of defense enzymes (CAT, SOD and POD) and detoxification enzymes (AchE，GST and CAE) were significantly enhanced in WBPH adults fed on infected plants. Results implied that infestation by RBSDV improved the ecological fitness of the nonvector planthopper.

Key words： rice; black streaked dwarf virus; Sogatella fucifera;ecological fitness

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HE Xiaochan1,2, XU Hongxing2, ZHENG Xusong2, YANG Yajun2, GAO Guangchun2, PAN Jianhong2, LU Qiang3, LU Zongxian2,* . Effects of Rice Black Streaked Dwarf Virus on Ecological Fitness of NonVector Planthopper, Sogatella fucifera [J]. Chinese Journal OF Rice Science, 2011 , 25(6) : 654 -658 . DOI: 10.3969/j.issn.10017216.2011.06.013

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