Effects of Fungicide Propiconazole on the Yeast-Like Symbiotes in Brown Planthopper (BPH, Nilaparvata lugens Stål) and Its Role in Controlling BPH Infestation

Frontiers in Physiology
Xu-Ping ShentuXiaoping Yu

Abstract

Yeast-like symbiotes (YLS), harbored in the abdomen fat-body cells of the rice brown planthopper (BPH), Nilaparvata lugens Stål (Hemiptera: Delphacidae), are vital to the growth and reproduction of their host. It is feasible to manipulate BPH infestation on rice by inhibiting YLS using fungicide. In this study, the fungicide propiconazole was injected into the hemolymph of BPH thorax via microinjection to investigate its effect on YLS, especially the dominant species, Hypomyces chrysospermus, and their host BPH. Propiconazole markedly reduced the total number of YLS and H. chrysospermus in BPH hemolymph and fat body, thereby leading to an obvious higher mortality and lower fecundity of BPH than the negative control (PBS, phosphate buffer solution). After microinjecting propiconazole, the survival rate of BPH nymphs at the 5th instar was significantly lower than that obtained after PBS treatment. Eight days after propiconazole microinjection, the BPH survival rate dropped to 40%, only half of BPH survival rate treated with PBS microinjection. For female adults (1-day-old), there were significant differences in the survival rates between BPHs treated with propiconazole and those treated with PBS at days 5-8. The fecundity of BPH ...Continue Reading

References

May 1, 1995·Insect Biochemistry and Molecular Biology·H NodaM Koizumi
Jun 13, 2008·Nature Protocols·Thomas D Schmittgen, Kenneth J Livak
Oct 22, 2009·Biotechnology Journal·Sandra ChavesRogério Tenreiro
Jan 26, 2010·Applied and Environmental Microbiology·Ming TangGuangcun He
Mar 13, 2016·Pesticide Biochemistry and Physiology·Xu-Ping ShentuXiao-Ping Yu

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Datasets Mentioned

BETA
AF267233.1
KU365929.1

Methods Mentioned

BETA
Electrophoresis
dissection
PCR

Software Mentioned

Primer Premier

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