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Plant Communications 2024年第9期5卷 116-135页

作者： Yunhua Chi Hongxiang Zhang Siyu Chen Yu Cheng Xiaofeng Zhang Dongsheng Jia Qian Chen Hongyan Chen Taiyun Wei Vector-borne Virus Research Center Fujian Province Key Laboratory of Plant VirologyInstitute of Plant VirologyFujian Agriculture and Forestry UniversityFuzhouFujian 350002China

Plant jasmonoyl-L-isoleucine(JA-Ile)is a major defense signal against insect feeding,but whether or how insect salivary effectors suppress JA-Ile synthesis and thus facilitate viral transmission in the plant phloem remains *** carboxylesterases(CarEs)are the third major family of detoxification ***,we identify a new leafhopper CarE,CarE10,that is specifically expressed in salivary glands and is secreted into the rice phloem as a saliva *** CarE10 directly binds to rice jasmonate resistant 1(JAR1)and promotes its degradation by the proteasome ***,the direct association of CarE10 with JAR1 clearly impairs JAR1 enzyme activity for conversion of JA to JA-Ile in an in vitro JAIle synthesis system.A devastating rice reovirus activates and promotes the co-secretion of virions and CarE10 via virus-induced vesicles into the saliva-storing salivary cavities of the leafhopper vector and ultimately into the rice phloem to establish initial ***,a virus-mediated increase in CarE10 secretion or overexpression of CarE10 in transgenic rice plants causes reduced levels of JAR1 and thus suppresses JA-Ile synthesis,promoting host attractiveness to insect vectors and facilitating initial viral *** findings provide insight into how the insect salivary protein CarE10 suppresses host JA-Ile synthesis to promote initial virus transmission in the rice phloem.

关键词： leafhopper salivary protein CarE10 JAR1 degradation JA-Ile synthesis rice phloem initial viral transmission

The reproductive strategy and the vibrational duet of the leafhopper Empoasca vitis

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Insect Science 2018年第5期25卷 869-882页

作者： Rachele Nieri Valerio Mazzoni Fondazione Edmund Mach Research and Innovation Center San Michele all'Adige Trentino Italy Department of Biology University of Florence Sesto Fiorentino Florence Italy

The recent description of a new vibrational mating disruption method to control the leafhopper Scaphoideus titanus Ball opened questions about its possible application to other leafhopper pests. Since the prerequisite for the method＇s successful application is a deep knowledge of the species mating behavior and the exact role of associated signals, we conducted behavioral assays on the green leafhopper Empoasca vitis Gothe, a pest of grapevine and other crops in Europe and Asia. Laser vibrometer recordings of single and paired individuals （male and female） during a 24-h period enabled us to detect and describe 2 male and 1 female signal. The pair formation starts when the female replies to a male call and a duet is established, then it continues through 2 different behavioral stages： Location and Courtship. The proper courtship begins only when the male locates the female. The latter is characterized by a significant change in temporal parameters that regards both the signals and the duet structure. Although the male calling activity and the female replying rate were the same during the 24 h, a lower number of matings was recorded during the night. We discuss the possible role of vision and of the species ecology as factors of reproductive success and mating strategy. Our conclusion is that the mechanical mating disruption technique seems feasible for future application to this species.

关键词： daily activity leafhopper mating behavior pest vibrational communication

An introductory review on the common brown leafhopper(Orosius orientalis):A new soybean pest

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Oil Crop Science 2024年第3期9卷 198-203页

作者： Tianhao Pei Xin Cui Shusen Shi Yu Gao College of Plant Protection Jilin Agricultural UniversityChangchun130118PR China Key Laboratory of Soybean Disease and Pest Control Ministry of Agriculture and Rural AffairsChangchun130118PR China

Soybean pests are one of the major factors limiting yield *** the expansion of area and changes in cropping patterns,a number of new pests have been identified in the main soybean production areas of *** common brown leafhopper,Orosius orientalis,is a new pest associated with soybean stay-green virus that has been discovered on cultivated soybean crop in the Yellow-Huai-hai region of China in recent *** polyphagous insect has a wide feeding range and infests a variety of important grain and cash *** paper presents the basic information,geographical distribution,hosts,damage characteristics,plant virus transmission,occurrence patterns,and prevention and control measures *** review also provides insights into integrated prevention and control of the genus Orosius as an insect vector.

关键词： Soybean leafhopper Plant virus Insect vector Orosius orientalis

Comparative Toxicity of Selected Insecticides to Phytoplasma Transmitted leafhopper Cicadulina bipunctata （Melichar）

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Journal of Agricultural Science and Technology(A) 2014年第6期4卷 514-520页

作者： Mahmoud Massoud Abo-E1-Saad Khalid Abdullah Alhudaib Abdulaziz Mohamed A1 Ajlan Date Palm Research Center of Excellence King Faisal University Alahsa 31982 Saudi Arabia College of Agriculture and Food Science King Faisal University Alahsa 31982 Saudi Arabia

leafhopper Cicadulina bipunctata is represented the main insect as a pathogen for phytoplasma disease occurring by insect-transmitted plant viruses in date palm orchards. Therefore, it is important to investigate the potential effect of some insecticides against such insect. The adults of leafhopper C. bipunctata were collected from date palm orchards in Alhasa, Eastern province, Saudi Arabia. Three insecticides from different classes--beta-cyfluthrin （pyrethroids）, imidacloprid （neonicotinoids） and abamectin （natural compounds）--have been evaluated in vivo against adults C. bipunctata. This stage was exposed to residual film of various concentrations of each insecticide on transparent plastic cups using a Potter precision laboratory spray tower. Bioassay test showed that both beta-cyfluthrin and imidacloprid caused 100% mortality by 500 ppm at 24 h after treatment, whereas abamectin gave the same mortality by 50 ppm at the same time. Toxicity values revealed that abameetin was the most potent insecticide compared with beta-cyfluthrin and imidacloprid, where the lethal concentrations LC50 and LC95 were 24.58 ppm and 116.73 ppm at 3 h after treatment, respectively. Therefore, abamectin can be a possible candidate to be applied on date palm or ground grass by the Ministry of Agriculture after successful field experiments.

关键词： Abamectin imidacloprid beta-cyfluthrin leafhopper insecticides phytoplasma bioassay.

Characterization of Resistance to the Green Rice leafhopper (<i>Nephotettix cincticeps</i>Uhler) in a Core Collection of Landraces in Rice (<i>Oryza sativa</i>L.)

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American Journal of Plant Sciences 2017年第2期8卷 236-256页

作者： Tan Van Mai Atsushi Yoshimura Hideshi Yasui Plant Breeding Laboratory Faculty of Agriculture Graduate School Kyushu University Fukuoka Japan Crop Research and Development Institute Vietnam National University of Agriculture Hanoi Vietnam

The green rice leafhopper (GRH;Nephotettix cincticeps Uhler) is one of the most devastating insect pests of cultivated rice (Oryza sativa L.) in temperate regions in Asia. Using the rice germplasms with biotic stress resistance is the most effective and environmentally-friendly way to control the insect pests in the paddy. Sixty accessions from a core set of worldwide collection of rice were characterized for resistance to the GRH by antibiosis test both at the seedling and at the booting stages. The positive correlations of average nymph mortality (ANM) were observed between at the seedling stage and at the booting stage on 3 days after infestation (DAI) (r = 0.684**), 5DAI (r = 0.680**), and 7DAI (r = 0.652**), respectively. This result will give us the opportunity to screen resistance to the GRH with the cost-efficient way using rice seedlings in a growth chamber. To classify the 60 accessions evaluated, the ANM of the GRH of each accession was compared to the respective ANM of resistant and susceptible controls with the least significant difference (LSD) value. Based on the statistical difference or similarity of the ANMs to the resistant and the susceptible controls, we proposed the four groups of resistance to the GRH, (I) high level of resistance, (II) considerable level of resistance, (III) moderate level of resistance, and (IV) susceptibility. At the seedling stage, a total of 26 accessions were highly resistant in addition to other 6 for considerable level of resistance and other 10 for moderate level of resistance. At the booting stage, on the other hand, a total of 18 accessions were highly resistant in addition to other 3 for considerable level of resistance and other 5 for moderate level of resistance. A total of 42 accessions with high to moderate level of resistance were distributed across 16 countries in Asia in addition to each one for Madagascar and USA. The classification of landraces based on the present protocol for screening resistance to the

关键词： Rice Core Collection Green Rice leafhopper Correlation Germplasm

Proteomic analysis of "Oriental Beauty" oolong tea leaves with different degrees of leafhopper infestation

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Proteomic analysis of "Oriental Beauty" oolong tea leaves wi...

Centers of endemism and diversity patterns for typhlocybine leafhoppers （Hemiptera： Cicadellidae： Typhlocybinae） in China

2018年中国质谱学术大会（CMSC2018）

作者： Han-Ju Chien Pei-Chien Sung Chia-Chang Wu Man-Miao Yang Chien-Chen Lai Institute of Molecular Biology Chung Hsing University

Oriental Beauty, a variety of oolong tea native to Taiwan, is highly prized by connoisseurs for its unique fruity aroma and sweet taste. Oriental Beauty owes its unique quality to the tea green leafhopper(Jacobiasca formosana), an insect of the Cicadelleidae family that feeds on the tea leaves.1 Leaves of Oriental Beauty vary in appearance, aroma and taste depending on the degree of leafhopper infestation. However, no studies have looked at differences in the proteome in leaves of Oriental Beauty with different degrees of tea green leafhopper infestation. In this study, we used a gel-based proteomic approach to investigate the differential expression of proteins in tea leaves with different degrees of leafhopper infestation. A total of 65 protein spots with at least two-fold differences in expression among leaves with low, medium and high degrees of infestation were excised from the gels and 157 proteins were identified by nano-liquid chromatography-electrospray/tandem mass spectrometry(nanoLC-ESIMS/MS). In gene ontology analysis, it showed that the majority of those proteins participated in biosynthesis, carbohydrate metabolism, transport, response to stress, and amino acid metabolism. Our results indicate that the unique aroma and taste of Oriental Beauty Tea might be influenced by the protein expression profiles besides other factors as a defense response to tea green leafhopper saliva. Those proteins may produce or alter metabolites which are actually the molecules responsible for the aroma.

关键词： Proteomics Oriental Beauty leafhopper 2-DE Oolong tea

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Insect Science 2014年第4期21卷 523-536页

作者： Shuai Yuan Min Huang Xiu-Shuang Wang Li-Qiang Ji Ya-Lin Zhang Key Laboratory of Animal Ecology and Conservation Biology Institute of Zoology Beijing University of Chinese Academy of Sciences Beijing Key Laboratory of Plant Protection Resources and Pest Management of Ministry of Education Entomological Museum Northwest A&F University Yangling Shaanxi China

This study identifies ＇centers of endemism＇ for typhlocybine leafhoppers in China, revealing diversity patterns and congruence of patterns between total species rich- ness and endemism. Distribution patterns of 774 Typhlocybinae （607 described and 167 undescribed species） were mapped on a 1.5° × 1.5° latitude/longitude grid. Total species richness, endemic species richness and weighted endemism richness were calculated for each grid cell. Grid cells within the top 5% highest values of weighted endemism richness were considered as ＇centers of endemism＇. Diversity patterns by latitude and altitude were obtained through calculating the gradient richness. A congruence of diversity patterns between total species richness and endemism was confirmed using correlation analysis. To investigate the bioclimatic factors （19 variables） contributing to the congruence be- tween total species richness and endemism, we compared the factor＇s difference between non-endemic and endemic species using the Kruskal-Wallis test. Eleven centers of en- demism, roughly delineated by mountain ranges, were identified in central and southern China, including the south Yunnan, Hengduan Mountains, Qinling Mountains, Hainan Is- land, Taiwan Island and six mountain areas located in western Sichuan, northwest Fujian, southeast Guizhou, southeast Hunan, central and western Guangdong, and north Zhejiang. Total species richness and endemic species richness decreased with increased latitude and had a consistent unimodal response to altitude. The proportions of endemism decreased with increased latitude and increased with rising altitude. Diversity patterns between total species richness and endemism were highly consistent, and ＇Precipitation of Coldest Pe- riod＇ and ＇Temperature of Coldest Period＇ may contribute to the congruence of pattern. Migration ability may play a role in the relationship of endemism and species richness; climate, environment factors and important geologic isolation events can also

关键词： biogeography centers of endemism diversity pattern leafhopper Quater-nary Typhlocybinae

Synthetic brochosomes:Design,synthesis,and applications

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Nano Research 2024年第2期17卷 734-742页

作者： Lin Wang Jinsol Choi Tak-Sing Wong Department of Mechanical Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA Materials Research Institute The Pennsylvania State UniversityUniversity ParkPA 16802USA Department of Biomedical Engineering The Pennsylvania State UniversityUniversity ParkPA 16802USA

Brochosomes,which are nanoscopic buckyball-shaped granules produced by leafhoppers,are one of the most intricate structures discovered in *** functions of brochosomes have been proposed but only a few have been experimentally validated due to the challenge of fabricating their synthetic *** in micro-and nanofabrication have recently led to the emergence of synthetic brochosomes,opening up new possibilities for innovative *** review explores the early discovery of natural brochosomes and their geometrical features,followed by the recent progress in fabricating synthetic brochosomes and their *** on future applications and challenges in the scalable manufacturing of synthetic brochosomes are discussed.

关键词： synthetic brochosomes leafhopper antireflection superhydrophobicity surface-enhanced Raman scattering photocatalyst energy harvesting

Rice yellow stunt virus activates polyamine biosynthesis to promote viral propagation in insect vectors by disrupting ornithine decarboxylase antienzyme function

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Science China(Life Sciences) 2021年第9期64卷 1522-1532页

作者： Xiao-Feng Zhang Tianbao Zeng Yunjie Xie Yuemin Zheng Huanqin Wang Hanbin Lin Zongwen Wang Taiyun Wei State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Institute of Plant VirologyFujian Agriculture and Forestry UniversityFuzhou 350002China

Intracellular polyamines(putrescine,spermidine,and spermine)have emerged as important molecules for viral infection;however,how viruses activate polyamines biosynthesis to promote viral infection remains *** decarboxylase 1(ODC1)and its antienzyme 1(OAZ1)are major regulators of polyamine biosynthesis in animal ***,we report that rice yellow stunt virus(RYSV),a plant rhabdovirus,could activate putrescine biosynthesis in leafhoppers to promote viral propagation by inhibiting OAZ1 *** observed that the reduction of putrescine biosynthesis by treatment with difluormethylornithine(DFMO),a specific nontoxic inhibitor of ODC1,or with in vitro synthesized dsRNAs targeting ODC1 mRNA could inhibit viral *** contrast,the supplement of putrescine or the increase of putrescine biosynthesis by treatment with ds RNAs targeting OAZ1 mRNA could facilitate viral *** further determined that both RYSV matrix protein M and ODC1 directly bind to the ODC-binding domain at the C-terminus of ***,viral propagation in leafhoppers would decrease the ability of OAZ1 to target and mediate the degradation of ODC1,which finally activates putrescine production to benefit viral *** work reveals that polyamine-metabolizing enzymes are directly exploited by a vector-borne virus to increase polyamine production,thereby facilitating viral infection in insect vectors.

关键词： rice yellow stunt virus leafhopper polyamines viral infection plant virus