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| 1 | Effects of nitrogen on the tolerance of brown planthopper,Nilaparvata Lugens, to adverse environmental factors显示文摘The effect of nitrogen content in rice plants on the tolerance of brown planthopper (BPH), Nilaparvata lugens Stal to high temperature, starvation and insecticide, was studied in the laboratory at International Rice Research Institute (IRRI), Philippines. Survival of nymphs and adults, fecundity and egg hatchability were significantly increased by the increase of nitrogen content in host plants at 38℃. Moreover, the survival of nymphs,fecundity and egg hatchability were significantly higher in BPH populations on rice plants with a high nitrogen regimen than those on rice plants with a low nitrogen regimen.Meanwhile, the tolerance of female adults to starvation and nymphs to growth regulator buprofezin on rice plants with a high nitrogen regimen were slightly increased. This indicates that the tolerances of BPH to adverse environmental stresses were positively increased by the application of nitrogenous fertilizer. The outbreak potential of BPH induced by the excessive application of fertilizer in rice fields was also discussed. | ZHONG-XIANLU KONG-LUENHEONG XIAO-PINGYU CUIHU | 2005 | Insect Science2005，12，2： | 16 |
| 2 | 烯啶虫胺对水稻褐飞虱田间控制效果显示文摘田间试验结果表明:烯啶虫胺对水稻褐飞虱具有较好的速效性、持效性,药后3 d,50%烯啶虫胺WSG 22.5~52.5 g/hm2对褐飞虱的防治效果为84.70%~90.81%;药后14 ~21 d,50%烯啶虫胺WSG 37.5~52.5 g/hm2对褐飞虱仍有89.84%~96.06%的防治效果.因此,从防治效果和防治成本的角度考虑,50%烯啶虫胺WSG防治水稻褐飞虱的适宜用量为37.5~52.5 g/hm2,防治适期在褐飞虱若虫高峰期,用水量不低于750 kg/hm2. | 束兆林 孙庭东 张芳 缪康 赵来成 | 2010 | 江西农业学报2010，22，9： | 13 |
| 3 | Impact of Nitrogen, Phosphorus and Potassium on Brown Planthopper and Tolerance of Its Host Rice Plants显示文摘The brown planthopper(BPH),Nilaparvata lugens(St?l),appeared as a devastating pest of rice in Asia. Experiments were conducted to study the effects of three nutrients,nitrogen(N),phosphorus(P) and potassium(K),on BPH and its host rice plants. Biochemical constituents of BPH and rice plants with varying nutrient levels at different growth stages,and changes in relative water content(RWC) of rice plants were determined in the laboratory. Feeding of BPH and the tolerance of rice plants to BPH with different nutrient levels were determined in the nethouse. Concentrations of N and P were found much higher in the BPH body than in its host rice plants,and this elemental mismatch is an inherent constraint on meeting nutritional requirements of BPH. Nitrogen was found as a more limiting element for BPH than other nutrients in rice plants. Application of N fertilizers to the rice plants increased the N concentrations both in rice plants and BPH while application of P and K fertilizers increased their concentrations in plant tissues only but not in BPH. Nitrogen application also increased the level of soluble proteins and decreased silicon content in rice plants,which resulted in increased feeding of BPH with sharp reduction of RWC in rice plants ultimately caused susceptible to the pest. P fertilization increased the concentration of P in rice plant tissues but not changed N,K,Si,free sugar and soluble protein contents,which indicated little importance of P to the feeding of BPH and tolerance of plant against BPH. K fertilization increased K content but reduced N,Si,free sugar and soluble protein contents in the plant tissues which resulted in the minimum reduction of RWC in rice plants after BPH feeding,thereby contributed to higher tolerance of rice plants to brown planthopper. | Md Mamunur RASHID Mahbuba JAHAN Khandakar Shariful ISLAM | 2016 | Rice science2016，23，3： | 12 |
| 4 | Recent advances in molecular biology research of a rice pest, the brown planthopper显示文摘The brown planthopper, Nilaparvata lugens St?l, has become a major threat in tropical Asian and China since the rice green revolution of the 1960 s. Currently, insecticide application remains the primary choice for controlling this rice insect pest, but heavy use of insecticides poses dangerous risks to beneficial natural enemies and pollinators, and stimulates N. lugens reproductivity, and has caused a resurgence of the pest in the major rice-planting regions throughout Asia. Achieving the long-lasting goal of sustainable management of N. lugens requires understanding of the molecular basis of outbreaks of the pest and the development of environment-friendly pest-control strategies. Here, we review the recent molecular advances in N. lugens research on the aspects of its endosymbionts, virus transmission, insecticide resistance, and interaction between N. lugens and rice plants. We also put forward further research directions that may shed some lights on management of the rice pest. | BAO Yan-yuan ZHANG Chuan-xi | 2019 | Journal of Integrative Agriculture2019，18，4： | 6 |
| 5 | Community structure, dispersal ability and functional profiling of microbiome existing in fat body and ovary of the brown planthopper, Nilaparvata lugens显示文摘The endosymbionts play vital roles in growth, development and reproduction in insects. Yeast-like endosymbionts (YLSs) have been well studied in Nilaparvata lugens (N. lugens), but little is known about the tissue-specific bacterial microbiomes, especially on the microbial intersection among internal tissues. Here, the correlation of microbial composition, structure, dispersal ability and functional profiling were illuminated in two tissues, the fat body and ovary in N. lugens. A total of 11 phyla and 105 genera were captured from all samples;Firmicutes and Proteobacteria were the most predominant and accounted for more than 99% in all samples. However, the relative abundance ofFirmicutes and Proteobacteria was significantly different in ovary and fat body through Fisher's Least Significant Difference test. Microbial diversity but not the richness index in the two tissues exhibited significant difference. Furthermore, the microbial community structure of the ovary and fat body were primarily determined by tissue quality. Firmicutes showed strong dispersal ability between ovary and fat body based on the quantitative null model assessing, indicating the frequent interaction of these microbiomes in the two tissues. In addition, the Kyoto Encyclopedia of Genes and Genomes pathways of microbial participation were delineated. The ten most abundant pathways counted for over 46% of the annotation and were shared between the two tissues, mainly containing Energy Metabolism and Amino Acid Metabolism/Biosynthesis. The results will provide insights into the correlation of microbial community structure between ovary and fat body of N. lugens. | Jian-Hua Zhang Na Yu Xi-Xia Xu Ze-Wen Liu | 2019 | Insect Science2019，26，4： | 5 |
| 6 | FAR gene enables the brown planthopper to walk and jump on water in paddy field显示文摘Many insects can live on water and survive being caught in the rain.Current research has shown that insect cuticular hydrocarbons(CHC)confer desiccation resistance to maintain water balance.In this study,we identified a fatty acyl-CoA reductase gene(NlFAR)of the rice brown planthopper,Nilaparvata lugens that is essential for the production of CHCs,and found that NlFAR is essential for N.lugens to walk and jump on water when moving from one rice plant to another in paddy fields.NlFAR was mainly expressed in the integument at the beginning of each molt.Cuticular surface analysis by scanning electron microscopy and characterization of CHC extracts indicated that N.lugens with knockdown of NlFAR using RNA inference(RNAi)had a neater epicuticle layer and a significant decrease in CHC contents.Knockdown of NlFAR did not influence the desiccation resistance of N.lugens,but the ds NlFAR-treated insects were easily adhered and moistened by water droplets or their own secreted honeydew and unable to walk or jump on water.These results suggested that NlFAR is a crucial enzyme for CHC biosynthesis and cuticle waterproofing,but not for water retention of N.lugens,which may provide a potential strategy for pest management. | Dan-Ting Li Xuan Chen Xin-Qiu Wang Chuan-Xi Zhang | 2019 | Science China(Life Sciences)2019，62，11： | 4 |
| 7 | Comparative analysis of the ecological fitness and transcriptome between two genotypes of the brown planthopper Nilaparvata lugens显示文摘Insect quantity is an important index for determining the degree of damage to plants.The brown planthopper(BPH),Nilaparvata lugens(Stal),is one of the most important rice pests in Asia.Here,we used two genotypes of BPH,a highfecundity genotype(HFG)and a low-fecundity genotype(LFG),to measure their ecological fitness and to explore possible causes for genotype differentiation by transcriptome sequencing.Our results showed that there were significant differences in body weight,egg hatching rate and honeydew secretion between the HFG and LFG,particularly,the number of eggs laid per female was more significant.Transcriptional analysis showed that a total of 1966 differentially expressed genes(DEGs)were mainly involved in energy metabolism,carbohydrate and lipid syn thesis,in sect horm one syn thesis and fecun dity-related pathways.Moreover,we found that the phosphorylation levels of AMPK,AKT and FoxO and the synthesis of ecdysone were different between the two genotypes of BPH.These findings may partially explain the differenee in the ecological fitness between HFG and LFG.This study is the first to compare the differences between two genotypes of BPH and to provide transcriptomic evidenee to further understand the fecundity of BPH. | LIU Kai CHEN Zhan SU Qin YUE Lei CHEN Wei-wen ZHANG Wen-qing | 2020 | Journal of Integrative Agriculture2020，19，6： | 2 |
| 8 | Wing patterning genes of Nilaparvata lugens identification by transcriptome analysis, and their differential expression profile in wing pads between brachypterous and macropterous morphs显示文摘The brown planthopper, Nilaparvata lugens is an economically important pest on rice plants. This species produces macropterous and brachypterous morphs in response to environmental cues, which makes it very difficult to control. The molecular basis of wing patterning in N. lugens is still unknown. It is necessary to identify wing patterning genes of N. lugens, and also to clarify the expression differences of wing patterning genes between macropterous and brachypterous morphs. High-throughput deep sequencing of transcriptome of N. lugens wing pad yielded 116 744 580 raw reads and 113 042 700 clean reads. All the reads were assembled into 55 963 unigenes with an average length of 804 bp. With the E-value cut-off of 1.0E–5,18 359 and 2 883 unigens had hits in NCBI-NR(NCBI non-redundant protein sequences) and NCBI-NT(NCBI nucleotide sequences) databases, respectively. A total of 16 502 unigenes were assigned to GO(gene ontology) classification, 9 709 ungenes were grouped into 26 COG(cluster of orthologous groups of proteins) classifications, and 6 724 unigenes were assigned to different KEGG(Kyoto encyclopedia of genes and genomes) pathways. In total, 56 unigenes which are homologous to wing patterning genes of Drosophila melanogaster or Tribolium castaneum were identified. Out of the 56 unigenes, 24 unigenes were selected, and their expression levels across the five nymphal stages between macropterous strain and brachypterous strain were examined by qR T-PCR. Two-way ANOVA analysis showed that development stage had significant effects on the expression level of all the 24 genes(P<0.05). The expression levels of 8 genes(Nlen, Nlhh, Nlsal, NlA bd-A, Nlwg, Nlvg, Nlexd and NlU bx) were significantly affected by wing morph. This is the first transcriptome analysis of wing pads of hemimetabolous insect, N. lugens. The identified wing patterning genes would be useful resource for future exploration of molecular basis of wing development. The 8 differentially expressed wing patterning genes between macropterous strain and brachypterous strain would contribute to explain molecular mechanism of wing-morph differentiation in N. lugens. | LI Kai-yin HU Ding-bang LIU Fang-zhou LONG Man LIU Si-yi ZHAO Jing HE Yue-ping HUA Hong-xia | 2015 | Journal of Integrative Agriculture2015，14，9： | 1 |
| 9 | 用ENSO事件的特征进行褐飞虱发生程度长期预测的研究显示文摘根据江西省泰和县1991~2007年褐飞虱发生程度的资料及1990~2007年ENSO事件的特征值资料,采用相关分析和逐步回归分析方法,建立了泰和县褐飞虱发生程度(Y)的长期预测模型:Y′=-0.20790X1+0.22877X2+4.05618,其中X1为上一年厄尔尼诺的强度,X2为当年3月南方涛动指数(Southern Oscillation Index,SOI)。该模型1991~2007年的历史拟合符合率为82.35%,2008~2009年的预报准确率为100%,并预测2010年泰和县褐飞虱发生程度为中等(3.11级)。 | 黄荣华 姚英娟 曾小军 曾宜杰 舒畅 | 2010 | 江西农业学报2010，22，8： | 0 |
| 10 | Brown planthopper E78 regulates moulting and ovarian development by interacting with E93显示文摘The brown planthopper(Nilaparvata lugens) is the main migratory pest in many rice growing areas in Asia. E78 is a member of the nuclear hormone receptor superfamily which plays an important role in egg development and maternal regulation of early embryogenesis. In this study, brown planthopper E78(NlE78) was cloned, and the predicted amino acid sequence showed that it contains two conserved domains: NR-LBD and DBD. qRT-PCR showed that the expression of NlE78 is high in the fifth instar nymphs and the ovaries of females. After downregulation of NlE78, the rate of moulting failure(33.2%) increased significantly, and ovarian development was delayed. However, when NlE78was downregulated together with NlE93, the emergence rate increased significantly(78.79%), and ovarian development was similar to that when NlE78 was downregulated but not delayed. A co-immunoprecipitation experiment showed that NlE78 interacts with NlE93, a crucial downstream transcription factor of the ecdysone signalling pathway. Cellular localization by immunofluorescence revealed that NlE78 and NlE93 are expressed in the nucleus. This study indicates that NlE78 regulates ovarian development and moulting, possibly through its interaction with NlE93. This study is of great significance for the development of new pesticides and control methods based on newly discovered targets. | ZHENG Shi-wen JIANG Xiao-juan MAO Yi-wen LI Yan GAO Han LIN Xin-da | 2023 | Journal of Integrative Agriculture2023，22，5： | 0 |
| 11 | karmoisin and cardinal ortholog genes participate in the ommochrome synthesis of Nilaparvata lugens (Hemiptera:Delphacidae)显示文摘Ommochrome is the major source for eye coloration of all insect species so far examined.Phenoxazinone synthetase (PHS)has always been regarded as the terminal step enzyme for ommochrome formation,which is encoded by cardinal or karmoisin genes. Our previous study indicated that the karmoisin ortholog gene (Nl-karmoisin)product in the brown planthopper (BPH)was a monocarboxylate transporter,while not a PHS. Here,based on full-length complementary DNA,the cardinal ortholog gene in BPH (Nl-cardinal)product was predicted to be a haem peroxidase rather than a PHS.We suggest for the first time that neither karmoisin nor cardinal encodes the PHS,but whether PHS participates in BPH eye pigmentation needs further research.Nymphal RNA interference (RNAi)experiments showed that knockdown Nl-cardinal transcript led the BPH ocelli and compound eye to color change from brown to red,while knockdown Nl-karmoisin only made the ocelli present the red phenotype.Notably,not only the Nl-cardinal transcript, dscd injection (Nl-cardinal targeting double-stranded DNA (dsRNA))also significantly reduced the Nl-karmoisin transcript by 33.7%,while dska (Nl-karmoisin targeting dsRNA) injection did not significantly change the Nl-cardinal transcript.Considering the above RNAi and quantitative real-time polymerase chain reaction results,we propose that Nl-cardinal plays a more important role in ommochrome synthesis than Nl-karmoisin,and it may be an upstream gene of Nl-karmoisin.The present study suggested that both karmoisin and cardinal ortholog genes play a role in ommochrome synthesis in a hemimetabolous insect. | Shu-Hua Liu Ju Luo Bao-Jun Yang Ai-Ying Wang Jian Tang | 2019 | Insect Science2019，26，1： | 0 |
| 12 | Occurrence Regularity of Major Damage Generations of Nilaparvata lugens(Stl) in Single Cropping Medium Rice Region in Sandu County of Guizhou Province显示文摘In order to clarify occurrence regularity of major damage generations of Nilaparvata lugens( Stl) in Sandu Shui Autonomous County( Sandu County for short),Guizhou Province,a karst single cropping medium rice region,the population dynamics of N. lugens were systematically studied using the methods of light trap and systematic field survey from 2009 to 2011. The results showed that the number of immigration generations caught by light trap and the actual population of N. lugens in fields were different among three years. The daily maximum trapping numbers of N. lugens amounted to 6 688 in 2009,which were 15. 3 and 2. 5 times of that in 2010 and 2011,respectively. The peak numbers in prediction nursery were 10 777,4 630 and 1 615 heads per hundred hills in 2009,2010 and 2011,respectively. The forth and fifth generations of N. lugens were the major damage generations in single cropping medium rice fields,and the initial immigration day was significantly related with primary-peak day. The occurrence degree of adults and nymphs of N. lugens varied with years and transplanting periods,and the peak days of N. lugens nymphs were from late July to early August in 2010 and 2011. The occurrence peaks of adults and nymphs in late transplanting paddy field were later than that in the early one. Meanwhile,the coexisted various growth periods of rice,due to time differences of transplanting,were conducive to inhabitation and reproduction of N. lugens. The population dynamics of spiders and Cyrtohinus lividipennis well synchronied with that of N. lugens,but predatory capacity of spiders and C. lividipennis was not enough to control N. lugens. | Liu Tianlei Jin Daochao Yang Hong Ai Zhengxian Zhou Zhaoxia | 2014 | Plant Diseases and Pests2014，5，2： | 0 |
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