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Synergistic effects of the entomopathogenic fungus Isaria javanica and low doses of dinotefuran on the efficient control of the rice pest sogatella furcifera

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Journal of Integrative Agriculture 2024年第2期23卷 621-638页

作者： Tingting Zhou Qian Zhao Chengzhou Li Lu Ye Yanfang Li Nemat OKeyhani Zhen Huang Department of Entomology College of Plant ProtectionSouth China Agricultural UniversityGuangzhou 510642China Guangdong Provincial Key Laboratory of High Technology for Plant Protection Plant Protection Research InstituteGuangdong Academy of Agricultural SciencesGuangzhou 510642China Department of Microbiology and Cell Science Institute of Food and Agricultural SciencesUniversity of FloridaFL 32611USA

The rice planthopper,sogatella furcifera,is a piercing-sucking insect pest of rice,Oryza sativa.It is responsible for significant crop yield losses,and has developed moderate to high resistance to several commonly used chemical insecticides.We investigated the effects of the insect fungal pathogen Isaria javanica,alone and in combination with the chemical insecticide dinotefuran,on S.furcifera under both laboratory and field conditions.Our results show that I.javanica displays high infection efficiency and mortality for different stages of S.furcifera,reducing adult survival,female oviposition and ovary development.Laboratory bioassays showed that the combined use of I.javanica with a low dose(4-16 mg L^(-1))of dinotefuran resulted in higher mortality in S.furcifera than the use of I.javanica or dinotefuran alone.The combined treatment also had more significant effects on several host enzymes,including superoxide dismutase,catalase,peroxidase,and prophenol oxidase activities.In field trials,I.javanica effectively suppressed populations of rice planthoppers to low levels(22-64%of the level in untreated plots).Additional field experiments showed synergistic effects,i.e.,enhanced efficiency,for the control of S.furcifera populations using the combination of a low dose of I.javanica(1×10^(4) conidia mL^(-1))and a low dose of dinotefuran(~4.8-19.2%of normal field use levels),with control effects of>90%and a population level under 50 insects per 100 hills at 3-14 days post-treatment.Our findings indicate that the entomogenous fungus I.javanica offers an attractive biological control addition as part of the integrated pest management(IPM)practices for the control of rice plant pests.

关键词： Isaria javanica sogatella furcifera entomopathogenic fungus white planthopper rice synergistic effect on pest control

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Characterization and functional analysis of chitinase family genes involved in nymph-adult transition of sogatella furcifera

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Insect Science 2021年第4期28卷 901-916页

作者： Xibin Yang Cao Zhou Guiyun Long Hong Yang Chen Chen Daochao Jin Provincial Key Laboratory for Agricultural Pest Management of Mountainous Regions Institute of EntomologyGuizhou UniversityGuiyangChina College of Tobacco Science of Guizhou University GuiyangChina Scientific Observing and Experimental Station of Crop Pest in Guiyang Ministry of AgricultureGuiyangChina

Chitinase degrades chitin in the old epidermis or peritrophic matrix of insects,which ensures normal development and metamorphosis.In our previous work,we comprehensively studied the function of SfCht7 in sogatella furcifera.However,the number and function of chitinase genes in S.furcifera remain unknown.Here,we identified 12 full-length chitinase transcripts from S.furcifera,which included nine chitinase(Cht),two imaginal disc growth factor(IDGF),and one endo-β-N-acetylglucosaminidase(ENGase)genes.Expression analysis results revealed that the expression levels of eight genes(SfCht3,SfCht5,SfCht6-1,SfCht6-2,SfCht7,SfCht8,SfCht10,and SfIDGF2)with similar transcript levels peaked prior to molting of each nymph and were highly expressed in the integument.Based on RNA interference(RNAi),description of the functions of each chitinase gene indicated that the silencing of SfCht5,SfCht10,and SfIDGF2 led to molting defects and lethality.RNAi inhibited the expressions of SfCht5,SfCht7,SfCht10,and SfIDGF2,which led to downregulated expressions of chitin synthase 1(SfCHS1,SfCHS1a,and SfCHS1b)and four chitin deacetylase genes(SfCDA1,SfCDA2,SfCDA3,and SfCDA4),and caused a change in the expression level of two trehalase genes(TRE1 and TRE2).Furthermore,silencing of SfCht7 induced a significant decrease in the expression levels of three wing development-related genes(SfWG,SfDpp,and SfHh).In conclusion,SfCht5,SfCht7,SfCht10,and SfIDGF2 play vital roles in nymph–adult transition and are involved in the regulation of chitin metabolism,and SfCht7 is also involved in wing development;therefore,these genes are potential targets for control of S.furcifera.

关键词： chitinase chitin deacetylase chitin synthesis RNA interference sogatella furcifera wing development

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Genome-wide characterization and developmental expression profiling of long non-coding RNAs in sogatella furcifera

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Insect Science 2020年第5期27卷 987-997页

作者： Zhao-Xia Chang Olugbenga Emmanuel Ajayi Dong-Yang Guo Qing-Fa Wu Hefei National Laboratory for Physical Sciences at Microscale School of Life SciencesUniversity of Science and Technology of ChinaHefeiChina and CAS Key Laboratory of Innate Immunity and Chronic Disease University of Science and Technology of ChinaHefeiChina

The genome-wide characterization of long non-coding RNA(lncRNA)in insects demonstrates their importance in fundamental biological processes.Esentially,an in-depth understanding of the functional repertoire of lncRNA in insects is pivotal to insect resources utilization and sustainable pest control.Using a custom bioinformatics pipeline,we identified 1861 lncRNAs encoded by 1852 loci in the sogatella furcifera genome.We profiled lncRNA expression in different developmental stages and observed that the expression of lncRNAs is more highly temporally restricted compared to protein-coding genes.More up-re gulated sogatella furcifera lncRNA expressed in the embryo,4th and 5th instars,suggesting that increased lncRNA levels may play a role in these developmental stages.We compared the relationship between the expression of sogatella furcifera lncRNA and its nearest protein gene and found that lncRNAs were more correlated to their downstream coding neighbors on the opposite strand.Our genome-wide profiling of lncRNAs in sogatella furcifera identifies exciting candidates for characterization of lncRNAs,and also provides information on lncRNA regulation during insect development.

关键词： co-expression long non-coding RNAs regulation RNA-seq sogatella furcifera

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Induction of P450 genes in Nilaparvata lugens and sogatella furcifera by two neonicotinoid insecticides

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Insect Science 2018年第3期25卷 401-408页

作者： Yuan-Xue Yang Na Yu Jian-Hua Zhang Yi-Xi Zhang Ze-Wen Liu Key Laboratory of Integrated Management of Crop Diseases and Pests (Ministry of Education) College of Plant Protection Nanjing Agricultural University Nanjing 210095 China

Nilaparvata lugens and sogatella furcifera are two primary planthoppers on rice throughout Asian countries and areas. Neonicotinoid insecticides, such as imidaclo- prid （IMI）, have been extensively used to control rice planthoppers and IMI resistance consequently occurred with an important mechanism from the over-expression of P450 genes. The induction of P450 genes by IMI may increase the ability to metabolize this insecticide in planthoppers and increase the resistance risk. In this study, the induction of P450 genes was compared in S. furcifera treated with IM] and nitromethyleneimidazole （NMI）, in two planthopper species by IMI lethal dose that kills 85% of the population （LD85）, and in N. lugens among three IMI doses （LD15, LD50 and LD85）. When IMI and NMI at the LD85 dose were applied to S. furcifera, the expression changes in most P450 genes were similar, including the up-regulation of nine genes and down-regulation of three genes. In terms of the expression changes in 12 homologous P450 genes between N. lugens and S. furcifera treated with IMI at the LD85 dose, 10 genes had very similar patterns, such as up-regulation in seven genes, down-regulation in one gene and no significant changes in two genes. When three different IMI doses were applied to N. lugens, the changes in P450 gene expression were much different, such as up-regulation in four genes at all doses and dose-dependent regulation of the other nine genes. For example, CYP6AY1 could be induced by all IMI doses, while CYP6ER1 was only up-regulated by the LDs0 dose, although both genes were reported important in IMI resistance. In conclusion, P450 genes in two planthopper species showed similar regulation patterns in responding to IMI, and the two neonicotinoid insecticides had similar effects on P450 gene expression, although the regulation was often dose-dependent.

关键词： induction expression neonicotinoid Nilaparvata lugens P450 genes sogatella furcifera

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Effects of a novel mesoionic insecticide,triflumezopyrim,on the feeding behavior of rice planthoppers,Nilaparvata lugens and sogatella furcifera(Hemiptera:Delphacidae)

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Journal of Integrative Agriculture 2020年第10期19卷 2488-2499页

作者： ZHU Jun SUN Wen-qing LI Yao GE Lin-quan YANG Guo-qing XU Jian-xiang LIU Fang College of Horiculture and Plant Protection Yangzhou UniversityYangzhou 225009P.R.China Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops Yangzhou UniversityYangzhou 225009P.R.China Joint International Research Laboratory of Agriculture&Agri-Product Safety Yangzhou UniversityYangzhou 225009P.R.China

The rice planthoppers,Nilaparvata lugens and sogatella furcifera,are important sap-sucking pests of rice in Asia.The mesoionic insecticide tifumezopyrim was previously shown to be highly effective in controlling both N.lugens and S.furcifera.In this study,electropenetrography(EPG)was used to evaluate the effect of three triflumezopyrim concentrations(LC。LC。and LC)on the feeding behavior of N.lugens and S.furcifera.EPG signals of planthoppes indicated that there were six different waveforms NP,N1,N2,N3,N4,and N5,which corresponded to non-penetration,stylet penetration into epidermis,salivation,extracellular movement of stylet,sap ingestion in phloem,and water ingestion in xylem during feeding.Compared to untreated controls,triflumezopyrim at LC。and LC。prolonged the duration of the non-penetration period by 105.3 to 333.7%.The probing frequencies of N.lugens exposed to tiflumezopyrim at LC1。and LCso were significantly increased;however,the probing frequencies of S.furcifera showed a significant decrease when exposed to triflumezopyrim at all concentrations.Triflumezopyrim exposure prolonged the duration of salivation and shortened the duration of extracellular movement.The duration of phloem sap ingestion decreased from 37.2 to 77.7%in the LCgo and LCgo treatments,respectively.Differences in feeding behavior in response to triflumezopyrim and pymetrozine were minimal.In summary,the results show that the LC。and LCgo concentrations of trflumezopyrim inhibit the feeding activities of N.lugens and S.furcifera mainly by prolonging the duration of non penetration and by shortening the duration of phloem sap ingestion,which may foster more efficient use of triflumezopyrim in Asia.

关键词： Nilaparvata lugens sogatella furcifera triflumezopyrim pymetrozine,feeding behavior EPG

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The Efficiency of Southern rice black-streaked dwarf virus Transmission by the Vector sogatella furcifera to Different Host Plant Species

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Journal of Integrative Agriculture 2012年第4期11卷 621-627页

作者： LI You-zhi CAO Yang ZHOU Qian GUO Hai-ming OU Oao-cai Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests College ofBiosafety ＆ Technology Hunan Agricultural University Changsha 410128 P.R. China Hunan Provincial Plant Protection Station Changsha 410650 P.R.China National Research Center of Engineering ＆ Technology for Utilization of Botanical Functional Ingredients Hunan Agricultural University Changsha 410128 P.R.China

Southern rice black-streaked dwarf disease is a new rice disease that severely affects rice production in South China.To understand transmission capacity of the vector sogatella furcifera to Southern rice black-streaked dwarf virus（SRBSDV） among different host plant species,potential host plants of SRBSDV collected from the diseased rice field and/or adjacent to the field in Hunan Province,China,were determined by RT-PCR,and the transmission rates of SRBSDV by S.furcifera among different host plant species were investigated.The results showed that host plants of SRBSDV in the rice fields were five of family Gramineae（Oryza sativa,Echinochloa crusgalli,Zea mays,Paspalum distichum,Alopecurus aequali） and two of family Cyperaceae（Juncellus serotinus and Cyperus difformis）.S.furcifera could not transmit SRBSDV between gramineous plants and cyperaceous plants,and could not transmit SRBSDV between the gramineous plants,J.serotinus and C.difformis as well.However,SRBSDV could be transmitted by S.furcifera within gramineous plants.S.furcifera could transmit SRBSDV between interspecies among three species plants（O.sativa,E.crusgalli and Z.mays）,and between P.distichum and A.aequali.At 15,20,25,30,and 35°C,both macropterous and brachypterous adult of S.furcifera could transmit SRBSDV from the plants（e.g.,E.crusgalli,Z.mays and O.sativa） infected with SRBSDV to rice seedlings.The transmission rates were first increased and then decreased with the increase of temperature.Macropterous adults transmitted SRBSDV from the viruliferous E.crusgalli,Z.may and rice plants to the healthy rice seedlings,and the infected rates of rice seedlings were 26.2,18.8 and 23.7% at 15°C,56.6,64.6 and 53.6% at 25°C,and was 11.2,10.2 and 7.3% at 35°C,respectively.Transmission capacity of brachypterous adults was significantly higher than that of macropterous adults at 15,20 and 25°C（P0.05）,while transmission capacity of brachypterous adults was relatively lower compared with that of macropterous ones at 35°C.These results offer evidence on the tra

关键词： sogatella furcifera Southern rice black-streaked dwarf virus host plants transmission efficiency

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Genetic Analysis of the Resistance in Six Newly-bred Rice Varieties to the Whitebacked Planthopper,sogatella furcifera

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Agricultural Sciences in China 2002年第3期1卷 319-322页

作者： LI Xi-ming, MA Liang-yong, LIU Guang-jie, ZHUANG Jie-yun, SHEN Jun-hui and MIN Shaokai(China National Rice Research Institute, Hangzhou 310006) China National Rice Research Institute Hangzhou 310006

The paper reports the study on resistance in 6 newly-bred rice varieties, such as Nongxiang 16 and 9234, to the whitehacked planthopper, sogatella furcifera. In crossing with the susceptible Taichung Native 1 (TN1), the resistance of their F1 and F2 populations and the back-crossed BC1F1 populations have been evaluated. The resistance to 5. furcifera in Zhenongda 6022, 9234 and Zhongjian 96-3 was controlled by a single dominant gene, and by a single recessive gene in Nongxiang 16, R40 and Shuhui 881, respectively. These varieties possessed good agronomical characteristics and could be used in further rice breeding and rice production.

关键词： Rice sogatella furcifera Resistance Dominant gene Recessive gene Genetical analysis

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Virulence of the Populations of the Whitebacked Planthopper, sogatella furcifera Reared on Different Resistant Rice Varieties

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Rice science 2003年第1期10卷 57-61页

作者： SHENJun-hui WANGYan KazushigeSOGAWA MakotoHATTORI LIUGuang-jie ChineseNationalCenterforRiceImprovement ChinaNationalRiceResearchInstituteHangzhou310006China CollegeofAgriculture JiangxiAgriculturalUniversityNanchang330045China JapanInternationalResearchCenterforAgriculturalSciences Tsukuba305-8686Japan NationalInstituteofAgrobiologicalSciences Tsukuba305-8634Japan

ARC and ND colony were obtained by rearing the whitebacked planthopper (WBPH), sogatella furcifera (Horvath), exclusively on ARC10239 (ARC, carrying resistance gene Wbph2) and N'Diang Marie (ND, carrying resistance gene Wbph5) till 15 generations. Taichung Native 1 (TN1) and Rathu Heenati (RHT) served as susceptible and resistant check, respectively. The results of electronic recording revealed that duration of salivation and X-waveform of the two colonies on their corresponding hosts was short while the duration of phloem ingestion was long. The amount of honeydew excreted by ARC and ND colony did not differ on their corresponding host varieties from TN1 and was much higher than that of RHT. The number of eggs laid on their host varieties and TN1 were significantly higher than that on RHT. No distinct change was observed for these two colonies in term of percentage of developed eggs. The nymph survival rate of ND colony on its selection host was 45.0%, significantly different from that on TNI(71.4%) and RHT(21.0%), while that of ARC colony was 68.3%, not significantly different from that on TN1 (77.5%), but much higher than that on RHT(22.6%). The nymphal development duration of these two colonies on the corresponding hosts was not different from that on TN1, but significantly shorter than that on RHT. In brief, these two colonies had almost adapted to their corresponding host varieties based on feeding and oviposition, but the nymphal survival rate of ND colony was still low.

关键词： sogatella furcifera electronic monitoring, feeding oviposition virulence

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Mapping of a New Gene Wbph6(t) Resistant to the Whitebacked Planthopper, sogatella furcifera, in Rice

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Rice science 2004年第3期11卷 86-90页

作者： LIXi-ming ZHAIHu-qu WANJian-min MALiang-yong ZHUANGJie-yun LIUOuang-jie YANGChang-deng NanjingAgriculturalUniversity Nanjing210095China StateKeyLaboratoryofRiceBiology ChinaNationalRiceResearchInstituteHangzhou310006China

A rice population consisting of 90 TN1/Guiyigu F3 lines was employed to analyze the linkage between DNA markers and a new gene Wbph6(t) conferring resistance to whitebacked planthopper, sogatella furcifera By using the mapping approach of bulked extremes and recessive class, Wbph6(t) was mapped onto the short arm of chromosome 11 with a genetic distance of 21.2 cM to SSLP marker RM167.

关键词： gene mapping restriction fragment length polymorphism simple sequence length polymorphism sogatella furcifera resistance to pest insect rice

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Virulence of the Populations of the Whitebacked Planthopper, sogatella furcifera Reared on Different Resistant Rice Varieties

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Rice Science 2003年第Z1期 57-61页

作者： Makoto HATTORI National Institute of Agrobiological Sciences Tsukuba 305-8634 Japan

ARC and ND colony were obtained by rearing the whitebacked planthopper (WBPH), sogatella furcifera (Horvath), exclusively on ARC10239 (ARC, carrying resistance gene Wbph2) and N’Diang Marie (ND, carrying resistance gene Wbph5) till 15 generations. Taichung Native 1 (TN1) and Rathu Heenati (RHT) served as susceptible and resistant check, respectively. The results of electronic recording revealed that duration of salivation and X-waveform of the two colonies on their corresponding hosts was short while the duration of phloem ingestion was long. The amount of honeydew excreted by ARC and ND colony did not differ on their corresponding host varieties from TN1 and was much higher than that of RHT. The number of eggs laid on their host varieties and TN1 were significantly higher than that on RHT. No distinct change was observed for these two colonies in term of percentage of developed eggs. The nymph survival rate of ND colony on its selection host was 45.0%, significantly different from that on TNI(71.4%) and RHT(21.0%), while that of ARC colony was 68.3%, not significantly different from that on TN1 (77.5%), but much higher than that on RHT(22.6%). The nymphal development duration of these two colonies on the corresponding hosts was not different from that on TN1, but significantly shorter than that on RHT. In brief, these two colonies had almost adapted to their corresponding host varieties based on feeding and oviposition, but the nymphal survival rate of ND colony was still low.

关键词： sogatella furcifera electronic monitoring, feeding oviposition virulence

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