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Journal of Forestry Research 2018年第2期29卷 453-464页

作者： Ruihe Gao Youqing Luo Zhuang Wang Hanjun Yu Juan Shi Beijing key laboratory for Forest pest control Beijing Forestry University

Masson pine stands infected by Pine wilt disease(PWD) in the Three Gorges Reservoir Region of central China were surveyed to quantify the immediate responses and subsequent trajectories of biomass,carbon(C),and nitrogen(N) in stand-level major ecosystem *** biomasses of above-and belowground tree components,as well as of the understory,forest floor,and mineral soil(0–40 cm),were determined within each stand.C and N storage were also estimated for each ecosystem *** biomass decreased steadily with the extent of PWD *** biomass ranged from1.97 to 4.16 Mg ha,and the observed value for forest floor biomass was 12.89–22.59 Mg *** highest mean C and N concentrations were found in the stem bark and needles of Masson pine,respectively,while the lowest were found in the semi-to fully decomposed layer of the forest floor and stem wood of Masson pine,*** C and N storage of aboveground trees,tree roots,and the aboveground ecosystem decreased with the extent ofPWD ***,the C and N contents of the understory,forest floor,and total mineral soil initially declined after PWD infection before recovering over the following several *** result concluded that the biomass,C,and N storage of different forest ecosystem compartments have experienced certain variations following the PWD *** is vital to understand the shifts in stand-level C and N allocation in PWD-damaged forest stands,as well as for predicting the responses of regional and global C and N cycling.

关键词： Carbon Insect outbreak Masson pine Nitrogen Pine sawyer beetle Pine wilt disease

Security and Privacy in Solar Insecticidal Lamps Internet of Things:Requirements and Challenges

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IEEE/CAA Journal of Automatica Sinica 2024年第1期11卷 58-73页

作者： Qingsong Zhao Lei Shu Kailiang Li Mohamed Amine Ferrag Ximeng Liu Yanbin Li the College of Artificial Intelligence Nanjing Agricultural UniversityNanjing 210031 the State key laboratory for Novel Software Technology Nanjing UniversityNanjing 210023 the State key laboratory of Cryptology Beijing 100878China IEEE the School of Engineering University of LincolnLincoln LN67TSUK the Artificial Intelligence and Digital Science Research Center Technology Innovation InstituteMasdar City 9639UAE the College of Computer and Data Science Fuzhou UniversityFuzhou 350108China

Solar insecticidal lamps(SIL) can effectively control pests and reduce the use of pesticides. Combining SIL and Internet of Things(IoT) has formed a new type of agricultural IoT,known as SIL-IoT, which can improve the effectiveness of migratory phototropic pest control. However, since the SIL is connected to the Internet, it is vulnerable to various security *** issues can lead to serious consequences, such as tampering with the parameters of SIL, illegally starting and stopping SIL,etc. In this paper, we describe the overall security requirements of SIL-IoT and present an extensive survey of security and privacy solutions for SIL-IoT. We investigate the background and logical architecture of SIL-IoT, discuss SIL-IoT security scenarios, and analyze potential attacks. Starting from the security requirements of SIL-IoT we divide them into six categories, namely privacy, authentication, confidentiality, access control, availability,and integrity. Next, we describe the SIL-IoT privacy and security solutions, as well as the blockchain-based solutions. Based on the current survey, we finally discuss the challenges and future research directions of SIL-IoT.

关键词： Challenges Internet of Things(IoT) privacy and security security requirements solar insecticidal lamps(SIL)

Invasion of fall armyworm led to the succession of maize pests in Southwest China

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Journal of Integrative Agriculture 2024年第4期23卷 1300-1314页

作者： Zezheng Fan Yifei Song Shengyuan Zhao Kongming Wu Agricultural Information Institute Chinese Academy of Agricultural SciencesBeijing 100081China Guangdong laboratory for Lingnan Modern Agriculture Guangzhou 510642China State key laboratory for Biology of Plant Diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China

The invasive fall armyworm Spodoptera frugiperda(***)invaded Asia in 2018,colonizing the tropical and southern subtropical regions as well as migrating with the monsoons into Northeast Asia during spring and *** has resulted in widespread infestations,with significant impacts on maize production in various Asian *** studies have shown that the invasion of this pest can alter the species relationships of maize pests,but the actual impact on maize pest management is still *** study investigated the changes in maize pest occurrence and pesticide use in the annual breeding areas of *** in Yunnan Province and the Guangxi Zhuang Autonomous Region of China during 2017-2021,based on surveys and interviews with small farmers in maize *** results showed that *** has emerged as the dominant species among maize pests after invasion and colonization,replacing traditional pests such as Ostrinia furnacalis,Spodoptera litura,Agrotis ypsilon,and Rhopalosiphum *** variety of pesticides used for maize pest control has changed from chlorpyrifos,lambda-cyhalothrin,and acetamiprid to emamectin benzoate-based pesticides with high effectiveness against ***,the frequency of maize pest chemical applications has increased from an average of 5.88 to 7.21 times per season,with the amounts of pesticides used in summer and autumn maize being significantly higher than in winter and spring maize,thereby increasing application costs by more than 35%.The results of this study clarified the impact of *** invasion on maize pest community succession and chemical pesticide use in tropical and south subtropical China,thereby providing a baseline for modifying the regional control strategies for maize pests after the invasion of this relatively new pest.

关键词： Spodoptera frugiperda annual breeding region sweet waxy corn economic evaluation

Effect of short neuropeptide F signaling on larval feeding in Mythimna separata

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Insect Science 2024年第2期31卷 417-434页

作者： Mei-Mei Li Qi Yang Li-Hui Chen Yan-Ying Li Jun-Xiang Wu Xiang-Li Xu State key laboratory of Crop Stress Biology in Arid Areas College of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi ProvinceChinaand School of Agricultural Sciences Jiangxi Agricultural UniversityNanchangChina

Mythimna separata is a notorious phytophagous pest which poses serious threats to cereal crops owing to the gluttony of the *** short neuropeptide F(sNPF)and its receptor sNPFR are involved in a diversity of physiological functions,especially in functions related to feeding in insects,it is a molecular target for pest ***,an sNPF and 2 sNPFRs were identified and cloned from *** analysis revealed that the sNPF and its receptors had a highly conserved RLRFamide C-terminus and 7 transmembrane domains,*** sNPF and its receptor genes were distributed across larval periods and tissues,but 2 receptors had distinct expression *** starvation-induced assay elucidated that sNPF and sNPFR expression levels were downregulated under food deprivation and recovered with subsequent *** interference knockdown of sNPF,sNPFR1,and sNPFR2 by injection of double-stranded RNA into larvae not only suppressed food consumption and increased body size and weight,but also led to decrease of glycogen and total lipid contents,and increase of trehalose compared with double-stranded green fluorescent protein ***,molecular docking was performed on the interaction mode between sNPFR protein and its ligand sNPF based on the 3-dimensional models constructed by AlphaFold;the results indicated that both receptors were presumably activated by the mature peptide *** results revealed that sNPF signaling played a considerably vital role in the feeding regulation of *** and represents a potential control target for this pest.

关键词： feeding regulation Mythimna separata pest control target RNA interference short neuropeptide F sNPF receptors

Molecular characterization of two novel esterase genes from carmine spider mite, Tetranychus cinnabarinus （Acarina： Tetranychidae）

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Insect Science 2010年第2期17卷 91-100页

作者： Wei Sun Chuan-Hua Xue Lin He Wen-Cai Lu Ming Li Xiao-Fang Cao Zhi-Mo Zhao key laboratory of Entomology and pest control Engineering College of Plant Protection Southwest University Chongqing China

Two novel esterase complementary DNAs were identified and cloned from the insecticide-susceptible strain of Tetranychus cinnabarinus （Boisduval）（Acarina： Tetrany- chidae）, which were designated as TCE1 and TCE2, respectively. The cDNA of TCE1 gene contained an open reading frame （ORF） of 1701 bp encoding 567 amino acids, and a predicted molecular weight of 62.75 kDa, the cDNA of TCE2 contained an ORF of 1680 bp encoding 560 amino acids, and a predicted molecular weight of 63.14 kDa. TCE1 and TCE2 were submitted to GenBank, accession number EU 130461 and EU 130462. The well-conserved sequence motif, GXSXG, used as a signature pattern in the esterase fam- ily are present in both TCE1 and TCE2 （GQSAG in TCE1, whereas GESAG in TCE2）, indicating that these two genes are predicted to be esterases. Comparison of the deduced amino acid sequence with the published mite esterase sequence coming from Boophilus microplus showed that TCE1 shares 33.98% identity and TCE2 shares 33.46% identity. TCE1 and TCE2 share 46.4% identity. Quantitative real-time polymerase chain reaction revealed that expression level of the TCE2 gene was relatively higher than that of the TCE1 in all instars examined except the protonymph, and the expression level of these two esterase genes in adults of T. cinnabarinus was significantly higher than that in any other instars, respectively. T. cinnabarinus is an important agricultural mite pest and esterases are important in the metabolisms of insects and mites; the genomic information obtained in this study will contribute to esterase molecular biological study on mite pest species.

关键词： esterase gene molecular cloning quantitative real-time PCR Tetranychus cinnabarinus

Tradeoff between triglyceride consumption and ovariole development in Plutella xylostella(L.) released in mixed-host environments

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Journal of Integrative Agriculture 2019年第4期18卷 865-872页

作者： HUANG Bin SHI Zhang-hong HOU You-ming State key laboratory of Ecological pest control for Fujian and Taiwan Crops/key laboratory of Insect Ecology in Fujian/College of Plant Protection Fujian Agriculture and Forestry University

After exposure to mixed environments with multiple hosts, the frequency of flight take-offs for Plutella xylostella(L.) is known to increase with a concomitant decrease in female fecundity. The objective of the present study was to elucidate the physiological mechanism underlying the increased flight activity and decreased fecundity of P. xylostella in mixed-host environments. We measured ovariole length, and triglyceride and vitellogenin(Vg) content in P. xylostella females after they were released into different host environments consisting of either a single host(Brassica campestris, Brassica oleracea or Brassica juncea) or a mixture of all three hosts. Our results indicated that ovariole length varied significantly between female adults from different host environments. Females from the B. campestris environment had the longest ovarioles, whereas those from the mixed environment had the shortest ones. A negative correlation was found between ovariole length and the flight take-off frequency of P. xylostella adults. Additionally, there were significant differences in the triglyceride content of P. xylostella females from different host environments. Our data revealed that more triglyceride was consumed by P. xylostella female adults from B. oleracea and the mixed environments than those from environments containing only B. campestris or B. juncea. In contrast, the relative Vg content in P. xylostella females from the mixed environment was lower than that in females from the B. campestris-, B. juncea-or B. oleracea-only environments. In conclusion, the mixed environment caused increased consumption of available energy resources(triglyceride) at the cost of retarding ovarian development and decreasing the amount of Vg produced.

关键词： diamondback moth triglyceride Lepidoptera ovariole length Plutellidae vitellogenin

Influence of Host Shift on Genetic Differentiation of the Oriental Fruit Fly,Bactrocera dorsalis

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Journal of Integrative Agriculture 2014年第12期13卷 2701-2708页

作者： WAN Xuan-wu LIU Ying-hong LUO Lin-ming FENG Chuan-hong WANG Sheng MA Li College of Plant Protection Southwest University/Chongqing Key Laboratory of Entomology and Pest Control Engineering Sichuan Plant Protection Station

Invasion of the oriental fruit lfy, Bactrocera dorsalis, into new niches containing different food sources （a process referred to as host shift）, may cause population genetic differentiation and sympatric speciation. To attempt to infer that experimentally, test populations were established by transferring a subset of the original populations, which had been grown on banana for many generations, onto navel orange, and then subculturing the navel orange population and banana population for at least 20 generations. Four pairs of SSR primers with high polymorphism on laboratory strains were used to detect population genetic differentiation. All six tested populations （the 5th, 10th and 15th generations of B. dorsalis fed on banana and navel orange, respectively） were found to have low genetic diversity. Furthermore, the genetic diversity of the navel orange populations was found to decline after being crossed for several generations. Populations initially were deviated from Hardy-Weinberg equilibrium, however, equilibrium was achieved with increasing numbers of generations in both of the host populations. Limited gene lfows were found among the six populations. The Nei’s standard genetic distances between the two host populations of the same generation were initially low, but increased with generation number. Genetic distances between banana and navel orange populations of the same generation were lower than genetic distances between different generations grown on the same host plant. Analysis of molecular distance （AMOVA） results based on generation groups and host groups demonstrated that genetic variation among generations was greater than that between the two host populations. The results indicated that population genetic differentiation occurred after the host shift, albeit at low level. Biogeography and taxonomy of the B. dorsalis complex revealed that speciation of B. dorsalis might be tightly associated with host shift or host specialization of B. dorsalis foll

关键词： Bactrocera dorsalis oriental fruit lfy host shift population genetic differentiation sympatric speciation

GARP: A family of glycine and alanine-rich proteins that helps spider mites feed on plants

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Insect Science 2023年第5期30卷 1337-1351页

作者： Qin-Zhe Sun Xiao-Lin Li Yu-Fei Shi Yan-Chun Zhang Wen-Jie Chai Ruo-Yu Chen Jinzhi Niu Jin-Jun Wang key laboratory of Entomology and pest control Engineering College of Plant ProtectionAcademy of Agricultural SciencesSouthwest UniversityChongqingChina

Spider mites(Tetranychidae)are destructive agricultural pests which have evolved strategies to overcome plant defenses,such as the ability to puncture the leaves of their hosts to *** expression of many genes with unknown functions is altered during feeding,but little is known about the role of these genes in plant–mite ***,we identified 3 novel gene families through analysis of genomic and transcriptomic data from 3 spider mite *** GARP family genes encode glycine and alanine-rich proteins;they are present in mites(Acariformes)but absent in ticks(Parasitiformes)in the subclass Acari,indicating that these genes have undergone a significant expansion in spider mites and thus play important adaptive *** analysis revealed that the expression of GARP genes is strongly correlated with feeding and the transfer to new *** used RNA interference to silence GARP1d in the two-spotted spider mite Tetranychus urticae,which inhibited feeding and egg laying and significantly increased mortality when the mites were transferred to soybean shoots;a similar effect was observed after TuVATPase was ***,no changes in mite mortality were observed after TuGARP1d-silenced mites were placed on an artificial diet,which was different from the effect of TuVATPase *** results indicate that GARP family members play important roles in mite–plant *** studies are needed to clarify the mechanisms underlying these interactions.

关键词： feeding mite-plant interaction RNA interference Tetranychus urticae Tetranychus evansi

Molting process revealed by the detailed expression profiles of RXR1/RXR2 and mining the associated genes in a spider mite, Panonychus citri

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Insect Science 2022年第2期29卷 430-442页

作者： Gang Li Xun-Yan Liu Guy Smagghe Jin-Zhi Niu Jin-Jun Wang key laboratory of Entomology and pest control Engineering College of Plant ProtectionInternational Joint Laboratory of China-Belgium on Sustainable Crop Pest ControlAcademy of Agricultural SciencesSouthwest UniversityChongqingChina Provincial key laboratory for Agricultural pest Management of Mountainous Regions Institute of EntomologyGuizhou UniversityGuiyangChina Department of Plants and Crops Faculty of Bioscience EngineeringGhent UniversityGhentBelgium

Spider mites have one ecdysone receptor(EcR)and multiple retinoid X receptors(RXRs).However,the function of these RXRs in spider mite development is ***,we screened the expression dynamics of two PcRXR isoforms at 4 h intervals in the deutonymphal stage of Panonychus *** results showed that PcEcR had an expression pattern similar to that of *** PcRXR1,its expression remained at a certain high level,when there was a decrease of both PcEcR and *** situ hybridization showed that PcRXR2 was detected in the central nervous mass,while the ecdysteroid biosynthesis gene PcSpo was mainly expressed at the edge of the central nervous ***-based silencing of PcRXR1 or PcRXR2 showed the same phenotype as in mites with that of silencing ***,RNA-seq was used to mine the genes associated with the expression dynamics of PcRXR1 or PcRXR2,which revealed that the heterodimer of EcR-RXR2 in spider mites might be linked with the cell autophagy and tissue remodeling during apolysis,and RXR1 might be linked with new epicuticle and exocuticle secretion during *** together,these results increase our understanding of the regulation mechanism of ecdysteroid signal pathway in spider mite development.

关键词： ecdysone receptor(EcR) in situ hybridization retinoid X receptors RNA interference RNA-seq

Expression and functional characterization of odorant-binding protein 2 in the predatory mite Neoseiulus barkeri

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Insect Science 2023年第5期30卷 1493-1506页

作者： Yixia Wu Yaying Li Wenqiang Chu Tiandi Niu Xiaotian Feng Rongjiang Ma Huai Liu key laboratory of Entomology and pest control Engineering College of Plant ProtectionSouthwest UniversityBeibei DistrictChongqing400715 China

Olfaction plays a crucial role for arthropods in foraging,mating,and *** odorant-binding protein(OBP)gene is considered one of the most important olfactory ***,little is known about its functions in predatory ***,we used Neoseiulus barkeri,an important commercialized natural pest control,to explore the chemosensory characteristics of *** this study,*** was attracted by methyl salicylate(MeSA)and showed higher crawling speeds under MeSA ***,we identified and cloned an OBP gene named Nbarobp2 and analyzed its expression profiles in the predatory ***2 was 663 bp,was highly expressed in larval and nymphal stages,and was significantly upregulated in *** under MeSA ***2 encoded 202 amino acid residues with a molecular weight of 23 kDa(after removing the signal peptide).Sequence comparisons revealed that the OBPs in Arachnida shared 6 conserved cysteine sites,but were distinguishable from the OBPs of Insecta on the phylogenetic *** interference,Western blotting,and binding affinity assays further proved that Nbarobp2 was involved in volatile perception in predatory *** study shed light on the functional characteristics of OBPs in predatory mites,providing a new insight for better biological control.

关键词： binding affinity crawling speed heterologous expression methyl salicylate olfactory behavior RNA interference