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Two sex pheromone receptors for sexual communication in the American cockroach

Science China(Life Sciences) 2024年第7期67卷 1455-1467页

作者： Na Li Renke Dong Huanchao Zeng Yan Zhang Run Huang Wei Liu Fengming Cao Jincong Yu Mingtao Liao Jingyou Chen Wenlei Zhang Zejian Huang Jiahui Wang Li Li Shen Zhu Danyan Huang Zining Li Xiaoshuai Zhang Dongwei Yuan Nan Chen Yongliang Fan Guirong Wang Coby Schal Yufeng Pan Sheng Li Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied Technology Institute of Insect Science and TechnologySchool of Life SciencesSouth China Normal UniversityGuangzhou 510631China Guangmeiyuan R&D center Guangdong Provincial Key Laboratory of Insect Developmental Biology and Applied TechnologySouth China Normal UniversityMeizhou 514589China Lingnan Guangdong Laboratory of Modern Agriculture Genome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518000China state Key Laboratory of Crop Stress Biology for Arid Areas and Key Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of AgricultureNorthwest A&F UniversityYangling 712100China Department of Entomology and Plant Pathology North Carolina State UniversityRaleigh 27695USA The Key Laboratory of Developmental Genes and Human Disease School of Life Science and TechnologySoutheast UniversityNanjing 210096China

Volatile sex pheromones are vital for sexual communication between males and *** of the American cockroach,Periplaneta americana,produce and emit two sex pheromone components,periplanone-A(PA)and periplanone-B(PB).Although PB is the major sex attractant and can attract males,how it interacts with PA in regulating sexual behaviors is still *** this study,we found that in male cockroaches,PA counteracted PB *** identified two odorant receptors(ORs),OR53 and OR100,as PB/PA and PA receptors,***53 and OR100 were predominantly expressed in the antennae of sexually mature males,and their expression levels were regulated by the sex differentiation pathway and nutrition-responsive *** localization of OR53 and OR100 in male antennae further revealed that two types of sensilla coordinate a complex two-pheromone-two-receptor pathway in regulating cockroach sexual *** findings indicate distinct functions of the two sex pheromone components,identify their receptors and possible regulatory mechanisms underlying the male-specific and age-dependent sexual behaviors,and can guide novel strategies for pest management.

关键词： sex pheromone odorant receptor sexual attraction sex differentiation cockroach

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Population genetic insights into the conservation of common walnut(Juglans regia)in Central Asia

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Plant Diversity 2024年第5期46卷 600-610页

作者： Linjiang Ye Robabeh Shahi Shavvon Hailing Qi Hongyu Wu Pengzhen Fan Mohammad Nasir Shalizi Safiullah Khurram Mamadzhanov Davletbek Yerlan Turuspekov Jie Liu CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Key Laboratory of Plant Resources and Biodiversity of Jiangxi Province Jingdezhen UniversityJingdezhen 333400JiangxiChina Germplasm Bank of Wild Species&Yunnan Key Laboratory of Crop Wild Relatives Omics Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina Department of Biology Faculty of ScienceYasouj UniversityYasouj 75918-74934Iran university of Chinese Academy of Sciences Beijing 100049China Department of Forestry and Environmental Resources North Carolina State UniversityRaleighNC 27695United States Department of Forestry and Natural Resources Faculty of AgricultureKabul UniversityKabul D-1006Afghanistan National Academy of Science of the Kyrgyz Republic Jalal-Abad Scientific CenterJalal-Abad 715600Kyrgyzstan Laboratory of Molecular Genetics Institute of Plant Biology and BiotechnologyAlmaty 050040Kazakhstan

The common walnut(Juglans regia)is one of the most economically important nut trees cultivated *** its importance,no comprehensive evaluation of walnut tree population genetics has been undertaken across the range where it originated,Central *** this study,we investigated the genetic diversity and population structure of 1082 individuals from 46 populations across Central *** found moderate genetic diversity of *** across Central Asia,with 46 populations clustered into three groups with a weak relationship between genetic and geographic *** findings reveal that the western Himalaya might be the core region of common walnut genetic diversity in Central Asia and that,except for two populations in Gongliu Wild Walnut Valley,humans might have introduced walnut populations to Xinjiang,*** observed distribution of the genetic landscape has probably been affected by historical climate fluctuation,breeding system,and prolonged anthropogenic *** propose the conservation of the core genetic diversity resources in the western Himalaya and pay special attention to populations from Gongliu in *** findings enhance our understanding of the genetic variation throughout the distribution range of *** in Central Asia,which will provide a key prerequisite for evidence-based conservation and management.

关键词： Central Asia Genetic diversity Germplasm management Gongliu wild walnut valley Juglans regia Western Himalaya

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A multi-scale cholera model linking between-host and within-host dynamics

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International Journal of Biomathematics 2018年第3期11卷 53-75页

作者： Chayu Yang Drew Posny Feng Bao Jin Wang Department of Mathematics university of Tennessee at Chattanooga Chattanooga TN 37403 USA nsf center for integrated pest management north carolina state university raleigh nc 27606 USA

We propose a multi-scale modeling framework to investigate the transmission dynamics of cholera. At the population level, we employ a SIR model for the between-host transmission of the disease. At the individual host level, we describe the evolution of the pathogen within the human body. The between-host and within-host dynamics are connected through an environmental equation that characterizes the growth of the pathogen and its interaction with the hosts outside the human body. We put a special emphasis on the within-host dynamics by making a distinction for each individual host. We conduct both mathematical analysis and numerical simulation for our model in order to explore various scenarios associated with cholera transmission and to better understand the complex, multi-scale disease dynamics.

关键词： Cholera equilibrium stability multi-scale modeling

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Field assessment of straw pellet combustion in improved heating stoves in rural northeast China

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Journal of Environmental Sciences 2023年第5期127卷 295-307页

作者： Yafei Liu Zhimin Li Emily Floess You Zhang Nicholas Lam Sylvester K.Mawusi Prabin Shrestha Xinghua Li Chunyu Xue Guangqing Liu Biomass Energy and Environmental Engineering Research center College of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029China state Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China Department of Civil Constructionand Environmental EngineeringNorth Carolina State UniversityRaleighNC 27695-7103USA Schatz Energy Research center Humboldt State UniversityArcataCA 95521USA School of Space and Environment Beihang UniversityBeijing 100191China

Straw pellets are widely promoted and expected to be a cleaner alternative fuel to unprocessed crop residues and rawcoal in rural ***,the effectiveness of these dissemination programs is not well *** this field study,emission characteristics of burning strawpellets,rawcoal,and unprocessed corn cobs in heating stoveswere investigated in a pilot village in northeast *** measurements covering the whole combustion cycle(ignition,flaming,and smoldering phases)shows the promotion of improved heating stoves and straw pellets could reduce pollutant emissions(e.g.,SO_(2) and CO),but increase NO_(X) and PM_(2.5) emissions compared to the initial stove-fuel use pattern in the studied *** is a significant variance in emission characteristics between different combustion *** normalized emission concentrations of the different stove-fuel combinations were higher than the limits in the Chinese national standard for heating stoves,indicating that the standard is not met for real-world *** consumption was lower than official *** surveys were conducted to identify the barriers to fuel and stove access associated with existing promotion strategies,management,and *** pilot program was of the typical“subsidy-and-policy-dependence”pattern and was unlikely to be implemented on a large *** innovation,operational optimization,and proper policies considering the local socioeconomic factors are needed to sustain the promotion of biomass straw pellets and stoves.

关键词： northeast China Straw pellet Improved heating stove Emission factors

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Beneficial horticultural responses from the application of solar thermotherapy to mature Huanglongbing-affected citrus trees

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Horticultural Plant Journal 2021年第5期7卷 411-422页

作者： Cheryl M.Armstrong Melissa S.Doud Weiqi Luo Smita Raithore Elizabeth A.Baldwin Wei Zhao Anne Plotto Jinhe Bai John A.Manthey Ed Stover Yongping Duan United states Department of Agriculture-Agriculture Research Service-Eastern Regional Research center WyndmoorPA 19038USA United states Department of Agriculture-Agriculture Research Service-United states Horticultural Research Laboratory Fort PierceFL 34945USA center for integrated pest management North Carolina State UniversityRaleighNC 27606USA Symrise AG TeterboroNJ 07608USA

The detrimental effects of Huanglongbing(HLB)on citrus are well known and so is the need for effective methods to combat this *** thermotherapy(ST),one of the management methods to help alleviate some of the negative effects of HLB,is the process of heating trees to therapeutic temperatures by encompassing the tree within a plastic structure(Visqueen)to harness the sun’s natural *** was applied to mature‘Valencia’citrus trees in three *** vigor,yield,and Candidatus Liberibacter asiaticus(Las)titer in leaves were monitored for two consecutive seasons post ST treatment,while fruit and juice quality were evaluated at the end of the second *** promoted an increase in canopy density in most groves tested and did not have a significant effect on fruit quantity,despite the prolonged exposure of the trees to increased ***,Las titer was reduced in both leaves and juice processed from affected trees post *** respect to fruit quality,the ratio of total soluble solids to titratable acidity was higher post ST compared to controls as was the sucrose content of the juice in most treated groves,whereas limonin was higher in juice from control *** components analysis of aroma volatiles showed significant differences between juice from treated versus control trees with volatiles imparting top-note and freshness to orange juice,such as acetaldehyde,hexanal,Z-3-hexenol and linalool,being higher in juice fromtreated *** panels confirmed that flavor differences existed,ultimately showing that ST resulted in improved juice flavor in well-managed *** the effects of ST on the trees appear temporary,such outcomes emphasize its utility when used as part of an integrated management strategy for HLB-affected citrus,imparting beneficial horticultural responses with minimal to positive effects on subsequent juice flavor.

关键词： HLB Candidatus Liberibacter asiaticus Thermotherapy Juice Flavor

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Adhesive free,conformable and washable carbon nanotube fabric electrodes for biosensing

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npj Flexible Electronics 2022年第1期6卷 940-948页

作者： Md.Milon Hossain Braden M.Li Busra Sennik Jesse S.Jur Philip D.Bradford Department of Textile Engineering Chemistry and ScienceNorth Carolina State UniversityRaleighNCUSA Department of Mechanical and Aerospace Engineering Cornell UniversityIthacaNYUSA Air Force Life Cycle management center Human Systems DivisionWright-Patterson AFBDaytonOHUSA Air Force Research Laboratory Materials and Manufacturing DirectorateWright-Patterson AFBDaytonOHUSA

Skin-mounted wearable electronics are attractive for continuous health monitoring and human-machine *** commonly used pre-gelled rigid and bulky electrodes cause discomfort and are unsuitable for continuous long-term monitoring ***,we design carbon nanotubes(CNTs)-based electrodes that can be fabricated using different textile manufacturing *** propose woven and braided electrode design using CNTs wrapped textile yarns which are highly conformable to skin and measure a high-fidelity electrocardiography(ECG)*** skin-electrode impedance analysis revealed size-dependent *** demonstrate outstanding wearability,we designed a seamless knit electrode that can be worn as a *** designed CNT-based dry electrodes demonstrated record high signal-to-noise ratios and were very stable against motion *** durability test of the electrodes exhibited robustness to laundering and practicality for reusable and sustainable applications.

关键词： electrode carbon durability

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Ultrasound-triggered noninvasive regulation of blood glucose levels using microgels integrated with insulin nanocapsules

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Nano Research 2017年第4期10卷 1393-1402页

作者： Jin Di Jicheng Yu Qun Wang Shanshan Yao Yanqi Ye Matthew Pless Yong Zhu Yun Jing Zhen Gu Joint Department of Biomedical Engineering University of North Carolina at Chapel Hill and North Carolina State University Raleigh NC27695 USA center for Nanotechnology in Drug Delivery and Division of Molecular Pharmaceutics UNC Eshelman School of Pharmacy University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA Department of Chemical and Biological Engineering Iowa State University Ames IA 50011 USA Department of Mechanical and Aerospace Engineering North Carolina State University Raleigh NC 27695 USA Department of Medicine University of North Carolina at Chapel Hill Chapel Hill NC 27599 USA

Diabetes is a serious public health problem affecting 422 million people worldwide. Traditional diabetes management often requires multiple daily insulin injections, associated with pain and inadequate glycemia control. Herein, we have developed an ultrasound-triggered insulin delivery system capable of pulsatile insulin release that can provide both long-term sustained and fast on-demand responses. In this system, insulin-loaded poly（lactic-co-glycolic acid）（PLGA） nanocapsules are encapsulated within chitosan microgels. The encapsulated insulin in nanocapsules can passively diffuse from the nanoparticle but remain restricted within the microgel. Upon ultrasound treatment, the stored insulin in microgels can be rapidly released to regulate blood glucose levels. In a chemically-induced type I diabetic mouse model, we demonstrated that this system, when activated by 30 s ultrasound administration, could effectively achieve glycemic control for up to one week in a noninvasive, localized, and pulsatile manner.

关键词： controlled drug delivery focused ultrasound diabetes nanocapsule microgel

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Evaluation of thermotherapy against Huanglongbing (citrus greening) in the greenhouse

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Journal of Integrative Agriculture 2016年第1期15卷 111-119页

作者： FAN Guo-cheng XIA Yu-lu LIN Xiong-jie HU Han-qing WANG Xian-da RUAN Chuan-qing LU Lian-ming LIU Bo Fruit Research Institute Fujian Academy of Agricultural Sciences Fuzhou 350013 P.R. China National Science Foundation center for integrated pest management North Carolina State University Raleigh NC 27606 USA Agricultural Bio-Resources Research Institute Fujian Academy of Agricultural Sciences Fuzhou 350003 P.R. China Zhejiang Citrus Research Institute Taizhou 318020 P.R. China

Huanglongbing （HLB, or citrus greening） is the most destructive disease of citrus, which is associated with Candidatus Liberibacter asiaticus （Las）. Few management options are available, aside from preventive measures such as removing infected plants, planting disease-free seedlings, and managing the insect vector. In this study, we assessed the efficacy of thermotherapy against HLB under controlled greenhouse conditions. A total of 60 two-year-old, graft-infected Citrus reticulata Blanco plants were used. The plants were randomly divided into three groups （45℃, 48℃, and untreated control）, with five plants/replicate （rep） and four reps/treatment. The treated plants were placed in phytotrons for a 4-h treatment session, repeated once per week for three consecutive weeks. Disease remission was observed eight weeks post-treatment. Real-time PCR assays revealed that Las titers in HLB-affected seedlings were significantly reduced in both 45 and 48℃ treatments four weeks after treatment, with the exception of eight plants. In contrast, Las titers in the untreated control plants increased significantly during the same period, with a maximum increase of 28-fold. Except for seven plants, Las titers in the new flushes of treated plants decreased more than 90% eight weeks after treatment. Las titers in mature leaves of treated plants decreased 56 and 60% in average at 45 and 48℃, respectively, eight weeks after treatment. The HLB symptoms and Las titer of seedings were markedly alleviated eight weeks after treatment in both 45 and 48℃ treatments. Our results laid a good foundation for the further development of citrus free-disease seedling cultivation and Huanglongbing control in the field. The whole plants were replaced for scion or branch in previous as the research object in this study, and the expression of Huanglongbing symptoms combined with real-time polymerase chain reaction （PCR） were used to evaluate the effect of heat treatment in the greenhouse.

关键词： Candidatus Liberibacter asiaticus Citrus reticulata thermotherapy bacterial titer

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基于线粒体COI序列对云南地区柚喀木虱单倍型的鉴定

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华南农业大学学报 2015年第4期36卷 81-86页

作者：王妍晶岑伊静江宏燕罗孝竹邓晓玲 XIA Yulu 华南农业大学农学院 center for integrated pest management North Carolina State University1730 Varsity Dr.Suite 110RaleighNC 27606USA

【目的】研究采自云南的柚喀木虱Cacopsylla citrisuga Yang&Li种群的遗传多样性.【方法】利用线粒体细胞色素C氧化酶亚基I基因(COI)条形码片段对采自云南瑞丽和石屏的柚喀木虱样本进行描述,并进行遗传距离和系统发育分析.【结果和结论... 详细信息

【目的】研究采自云南的柚喀木虱Cacopsylla citrisuga Yang&Li种群的遗传多样性.【方法】利用线粒体细胞色素C氧化酶亚基I基因(COI)条形码片段对采自云南瑞丽和石屏的柚喀木虱样本进行描述,并进行遗传距离和系统发育分析.【结果和结论】经鉴定共得到2种单倍型C1和C2,瑞丽种群的单倍型均为C1,而石屏的种群分化出了2种单倍型C1和C2.分析表明,柚喀木虱的最大序列分歧度特别低,仅为0.16%.此COI片段能很好地区分柚喀木虱与同属的其他几种木虱.

关键词：云南柚喀木虱 RAPD-PCR 线粒体COI 单倍型遗传多样性

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亚洲柑橘木虱和柚喀木虱过冷却点和体液结冰点测定

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环境昆虫学报 2015年第1期37卷 1-7页

作者：黄治轶徐昊昱杜源良杨玉枝乌天宇曾丽霞 Yu-Lu XIA 岑伊静华南农业大学昆虫生态研究室广州510642 center for integrated pest management North Carolina State University Raleigh NC 27606 USA

亚洲柑橘木虱Diaphorina citri Kuwayama和柚喀木虱Cacopsylla citrisuga Yang&Li均为柑桔上的重要害虫,前者为黄龙病的主要媒介昆虫,后者也已证实为黄龙病菌的携带者。本文对这两种木虱各龄若虫和成虫的过冷却点和体液结冰点进行了测定... 详细信息

亚洲柑橘木虱Diaphorina citri Kuwayama和柚喀木虱Cacopsylla citrisuga Yang&Li均为柑桔上的重要害虫,前者为黄龙病的主要媒介昆虫,后者也已证实为黄龙病菌的携带者。本文对这两种木虱各龄若虫和成虫的过冷却点和体液结冰点进行了测定,结果表明,柑橘木虱过冷却点和冰点均以1龄若虫最低,平均值分别为-26.32℃和-26.22℃;成虫的过冷却点和冰点最高,分别为-19.60℃和-18.71℃;其它虫态过冷却点和冰点由低到高依次为2龄若虫、4龄若虫、5龄若虫、3龄若虫。柚喀木虱过冷却点和冰点也均以1龄若虫最低,平均值分别为-25.30℃和-25.08℃;5龄若虫的过冷却点和冰点最高,平均分别为-19.50℃和-17.69℃;其它虫态过冷却点和冰点由低到高依次为2龄若虫、3龄若虫、4龄若虫、成虫。两种木虱的比较结果表明,各发育阶段的表现不一致,柚喀木虱的3龄若虫和成虫过冷却点显著低于柑桔木虱,而4龄、5龄若虫则显著高于柑桔木虱;3龄若虫体液结冰点也显著低于柑桔木虱,但1龄、4龄却显著高于柑桔木虱。柑桔木虱雌雄成虫的过冷却点和体液结冰点差异不显著。研究结果表明两种木虱的过冷却点、体液结冰点都较低,因而可能具有较强的耐寒能力。

关键词：亚洲柑橘木虱柚喀木虱过冷却点冰点黄龙病

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