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Occurrence and molecular characterization of Potato spindle tuber viroid(PSTVd) isolates from potato plants in North China

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Journal of Integrative Agriculture 2016年第2期15卷 349-363页

作者： QIU Cai-ling ZHANG Zhi-xiang LI Shi-fang BAI Yan-ju LIU Shang-wu FAN Guo-quan GAO Yan-ling ZHANG Wei ZHANG Shu Lü Wen-he Lü Dian-qiu Northeast Agricultural University Harbin 150030 P.R. China Virus-free Seedling Research Institute Heilongjiang Academy of Agricultural Sciences Harbin 150086 PR China State Key Laboratory of Biology of plant diseases and Insect pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 P.R. China

China is the largest potato producing country worldwide,with this crop representing the fourth largest staple food crop in ***,the steady presence of Potato spindle tuber viroid（PSTVd） over the past five decades has a significant economic impact on potato *** determine why PSTVd control measures have been ineffective in China,more than 1 000 seed potatoes collected between 2009 and 2014 were subjected to PSTVd detection at the Supervision and Testing center for Virus-free Seed Potatoes Quality,Ministry of Agriculture,China.A high PSTVd infection rate（6.5%） was detected among these commercial seed *** breeding lines of potato collected from 2012 to 2015 were also tested for PSTVd infection,revealing a high rate of PSTVd contamination in these potato propagation ***,comparison of the full-length sequences of 71 different Chinese PSTVd isolates revealed a total of 74 predominant PSTVd variants,which represented 42 different sequence variants of *** sequence analysis revealed 30 novel PSTVd sequence variants specific to *** phylogenetic analysis uncovered a close relationship between the Chinese PSTVd sequence variants and those isolated from *** is worth noting that three intermediate strains and six mild strains were identified among these *** results have important implications for explaining the ineffective control of PSTVd in China and thus could serve as a basic reference for designing more effective measures to eliminate PSTVd from China in the future.

关键词： certification germplasm phylogenetic analysis quarantine seed potato viroid

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Unlocking the bacterial contact-dependent antibacterial activity to engineer a biocontrol alliance of two species from natural incompatibility to artificial compatibility

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Stress Biology 2021年第1期1卷 230-242页

作者： Qianhua Wu Bozhen Wang Xi Shen Danyu Shen Bingxin Wang Qinggang Guo Tao Li Xiaolong Shao Guoliang Qian College of plant Protection Laboratory of Plant ImmunityKey Laboratory of Integrated Management of Crop Diseases and PestsNanjing Agricultural UniversityNo.1 WeigangNanjingJiangsu 210095People’s Republic of China Institute of plant Protection Hebei Academy of Agricultural and Forestry SciencesIntegrated Pest Management Center of Hebei ProvinceKey Laboratory of IPM on Crops in Northern Region of North ChinaMinistry of Agriculture and Rural Affairs of ChinaBaoding 071000People’s Republic of China Shanghai Veterinary Research Institute Chinese Academy of Agricultural SciencesShanghai 200241People’s Republic of China

plant growth-promoting rhizobacteria(PGPR)contain various biocontrol bacteria with broad-spectrum antimicrobial activity,and their single species has been extensively applied to control crop *** development of complex biocontrol community by mixing two or more PGPR members together is a promising strategy to enlarge the efficacy and scope of ***,an effective method to assess the natural compatibility of PGPR members has not yet been established to ***,we developed such a tool by using the bacterial contactdependent antibacterial activity(CDAA)as a *** showed that the CDAA events are common in two-species interactions in the four selected representative PGPRs,represented by the incompatible interaction of Lysobacter enzymogenes strain OH11(OH11)and Lysobacter antibioticus strain OH13(OH13).We further showed that the CDAA between OH11 and OH13 is jointly controlled by a contact-dependent killing device,called the type IV secretion system(T4SS).By deleting the respective T4SS synthesis genes,the T4SS in both strains was co-inactivated and this step unlocked their natural CDAA,resulting in an engineered,compatible mutant alliance that co-displayed antibacterial and antifungal ***,this study reveals that releasing bacterial CDAA is effective to rationally engineer the biocontrol community.

关键词： PGPR Biocontrol Contact-dependent antibacterial activity T4SS Engineering

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Range expansion of the invasive cotton mealybug, Phenacoccus solenopsis Tinsley: An increasing threat to agricultural and horticultural crops in China

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Journal of Integrative Agriculture 2020年第3期19卷 881-885页

作者： WANG Yu-sheng DAI Tian-mei TIAN Hu WAN Fang-hao ZHANG Gui-fen State Key Laboratory for Biology of plant diseases and Insect pests/Key Laboratory of Integrated Pest Management of Crop Ministry of Agriculture and Rural Affairs/Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China Hunan Provincial Key Laboratory for control of Forest diseases and pests College of ForestryCentral South University of Forestry and TechnologyChangsha 410004P.R.China Caofeidian Customs House Tangshan 063210P.R.China center for Management of Invasive Alien Species Ministry of Agriculture and Rural AffairsBeijing 100193P.R.China

The globally invasive cotton mealybug Phenacoccus solenopsis Tinsley,has recently invaded several Chinese regions,and continues to expand its *** mealybug is a polyphagous insect pest,with at least 200 host plants from 63 families,including cotton,food crops,fruits,ornamental plants,tobacco,and ***,we describe the first finding of *** in Shandong province,and investigate the abundances of its natural enemies(predator Coccinella septempunctata *** parasitoid Aenasius bambawalei Hayat).All three species were detected from ornamental and weed species in Linyi,Shandong,in September 2018,and were positively identified using DNA *** analysis revealed significant identity(99.38-100%) between sequences of *** obtained in this study and those published in the *** invasive pest represents a major potential threat to agri-horticulture in Shandong,which is a key province of China for production and export of many vegetables,flowers,fruits,and other *** mealybug species has a wide range of potential distribution in Shandong and is easily dispersed with agricultural and horticultural transport *** monitoring and management strategies are required to limit the spread of this pest species.

关键词： Aenasius bambawalei Coccinella septempunctata field investigation invasive insect pest molecular identification Phenacoccus solenopsis rapid spreading

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Relevance of Advanced plant Disease Detection Techniques in Disease and Pest Management for Ensuring Food Security and Their Implication: A Review

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American Journal of plant Sciences 2023年第11期14卷 1260-1295页

作者： Matthew Abu John Ibukunoluwa Bankole Oluwatayo Ajayi-Moses Tofunmi Ijila Timilehin Jeje Patil Lalit department of plant pathology North Dakota State University Fargo ND USA department of Genomics Phenomics and Bioinformatics North Dakota State University Fargo ND USA USDA-ARS Cereal Crops Research Unit Edward T. Schafer Agricultural Research Center Fargo ND USA department of Agriculture Agribusiness and Environmental Sciences Texas A&M University Kingsville TX USA department of Botany and plant pathology Purdue University West Lafayette IN USA department of plant pathology Indian Agricultural Research Institute New Delhi India

plant diseases and pests present significant challenges to global food security, leading to substantial losses in agricultural productivity and threatening environmental sustainability. As the world’s population grows, ensuring food availability becomes increasingly urgent. This review explores the significance of advanced plant disease detection techniques in disease and pest management for enhancing food security. Traditional plant disease detection methods often rely on visual inspection and are time-consuming and subjective. This leads to delayed interventions and ineffective control measures. However, recent advancements in remote sensing, imaging technologies, and molecular diagnostics offer powerful tools for early and precise disease detection. Big data analytics and machine learning play pivotal roles in analyzing vast and complex datasets, thus accurately identifying plant diseases and predicting disease occurrence and severity. We explore how prompt interventions employing advanced techniques enable more efficient disease control and concurrently minimize the environmental impact of conventional disease and pest management practices. Furthermore, we analyze and make future recommendations to improve the precision and sensitivity of current advanced detection techniques. We propose incorporating eco-evolutionary theories into research to enhance the understanding of pathogen spread in future climates and mitigate the risk of disease outbreaks. We highlight the need for a science-policy interface that works closely with scientists, policymakers, and relevant intergovernmental organizations to ensure coordination and collaboration among them, ultimately developing effective disease monitoring and management strategies needed for securing sustainable food production and environmental well-being.

关键词： Disease Management Detection Techniques Advanced Detection Sustainability Science-Policy Food Security

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Optimization of the sex pheromone-based method for trapping field populations of Phthorimaea operculella(Zeller)in South China

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Journal of Integrative Agriculture 2021年第10期20卷 2727-2733页

作者： YAN Jun-jie MEI Xiang-dong FENG Jia-wen LIN Zhi-xu Stuart REITZ MENG Rui-xia GAO Yu-lin College of Agronomy Inner Mongolia Agricultural UniversityHohhot 010019P.R.China State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China Agricultural Technology Popularization center of Malong District Qujing CityYunnan ProvinceMalong 655100P.R.China department of Crop and Soil Science Oregon State UniversityOR 97914USA National center of Excellence for Tuber and Root Crop Research Chinese Academy of Agricultural SciencesBeijing 100081P.R.China

Despite the identification of the potato tuber moth Phthorimaea operculella(Zeller)sex pheromone,no effective application based on this pheromone has yet been developed and *** study investigated the effect of pheromone lures,trap densities,heights of trap deployment,and pheromone doses in Yunnan,China,for the purpose of increasing the control efficiency of *** and improving the application of pheromone technology in the *** results showed that lures made of corn oil and red PVC pipes attracted the highest number of moths(11.73±1.90 per trap per day).Sex pheromone loading of 100μg was optimal for trapping moths,but higher doses of pheromone inhibited *** density of traps did not affect capture rates;therefore,the optimum trap density was 30–40 traps ha^(–1).The optimum height of trap deployment was not above the height of the plant *** study provides technical details necessary for the monitoring and control of potato tuber moth using sex pheromones.

关键词： Phthorimaea operculella(Zeller) sex pheromone applied technology trapping

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Field Efficacy Trials of 1%Bifenthrin·thiamethoxam GR against Sweet Potato Weevil

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plant diseases and pests 2023年第2期14卷 14-15,26页

作者： Xiaopeng LIU Zhenhua ZHAO Junding HUANG Jiangmen plant Protection Co. Ltd.Jiangmen 529000China Jiangmen plant Protection Technology Co. Ltd.Jiangmen 529000China Agricultural Pest Precaution and Management center of Guangdong province Guangzhou 510500China

[Objectives]The paper was to verify the field efficacy of 1%bifenthrin·thiamethoxam GR replacing organophosphorus GR against sweet potato weevil and its impact on the yield and quality of sweet potato.[Methods]A total of 4 field trials were conducted in Guangdong province,including 1%bifenthrin·thiamethoxam GR applied at the doses of 3,4 and 5 kg/667 m^(2),and 3%phoxim GR applied at the dose of 4 kg/667 m^(2).[Results]1%Bifenthrin·thiamethoxam GR applied at the dose of 5 kg/667 m^(2)had excellent control effects on sweet potato weevil,with an average control effect of 77.60%,which was significantly higher than that of 3%phoxim GR applied at the dose of 4 kg/667 m^(2)(48.52%).And the average yield increase rate of sweet potato treated with 1%bifenthrin·thiamethoxam GR reached 24.79%,significantly higher than 12.37%in the control group.[Conclusions]1%Bifenthrin·thiamethoxam GR should be evenly distributed on the ridge surface near sweet potato within 5-7 d after planting,and the recommended dosage is 5 kg/667 m^(2),which will have good control effect on sweet potato weevil and increase the yield of sweet potato.

关键词： Bifenthrin·thiamethoxam Phoxim Sweet potato weevil control effect

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Predicting global numbers of teleomorphic ascomycetes

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Fungal Diversity 2022年第3期114卷 237-278页

作者： Indunil C.Senanayake Dhandevi Pem Achala R.Rathnayaka Subodini N.Wijesinghe Saowaluck Tibpromma Dhanushka N.Wanasinghe Rungtiwa Phookamsak Nuwan D.Kularathnage Deecksha Gomdola Dulanjalee Harishchandra Lakmali S.Dissanayake Mei-mei Xiang Anusha H.Ekanayaka Eric H.C.McKenzie Kevin D.Hyde Hao-xing Zhang Ning Xie Guangdong Provincial Key Laboratory for plant Epigenetics College of Life Science and OceanographyShenzhen UniversityNanhai AvenueNanshanShenzhen 3688GuangdongChina Innovative Institute for plant Health Zhongkai University of Agriculture and EngineeringHaizhu DistrictGuangzhou 510225China center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand School of Science Mae Fah Luang UniversityChiang Rai 57100Thailand Honghe center for Mountain Futures Kunming Institute of BotanyChinese Academy of SciencesHonghe County 654400YunnanChina Centre for Mountain Futures(CMF) Kunming Institute of BotanyKunming 650201YunnanChina CIFOR-ICRAF China Program World Agroforestry(ICRAF)Kunming 650201YunnanChina Beijing Key Laboratory of Environment Friendly Management On Fruit diseases and pests in North China Institute of Plant and Environment ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China Engineering Research center of the Utilization for Characteristic Bio-Pharmaceutical Resources in Southwest Ministry of EducationGuizhou UniversityGuiyang 550025GuizhouChina Manaaki Whenua-Landcare Research Auckland Mail CentrePrivate Bag 92170Auckland 1142New Zealand

Sexual reproduction is the basic way to form high genetic diversity and it is beneficial in evolution and speciation of *** global diversity of teleomorphic species in Ascomycota has not been *** paper estimates the species number for sexual ascomycetes based on five different estimation approaches,*** numbers of described fungi,by fungus:substrate ratio,by ecological distribution,by meta-DNA barcoding or culture-independent studies and by previous estimates of species in *** assumptions were made with the currently most accepted,“2.2–3.8 million”species estimate and results of previous studies concluding that 90%of the described ascomycetes reproduce *** Catalogue of Life,Species Fungorum and published research were used for data *** average value of teleomorphic species in Ascomycota from all methods is 1.86 million,ranging from 1.37 to 2.56 ***,only around 83,000 teleomorphic species have been described in Ascomycota and deposited in data *** ratio between described teleomorphic ascomycetes to predicted teleomorphic ascomycetes is 1:***,where are the undiscovered teleomorphic ascomycetes?The undescribed species are no doubt to be found in biodiversity hot spots,poorly-studied areas and species *** poorly studied niches include extremophiles,lichenicolous fungi,human pathogens,marine fungi,and fungicolous *** species are present in unexamined collections in specimen repositories or incompletely described earlier *** issues,such as the use of separate names for teleomorph and anamorphs,synonyms,conspecific names,illegitimate and invalid names also affect the number of described *** introgression results in new species,while species numbers are reduced by extinctions.

关键词： Ascomycota Estimates Habitat diversity Molecular techniques Species concepts

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A novel ambigrammatic mycovirus,PsV5,works hand in glove with wheat stripe rust fungus to facilitate infection

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plant Communications 2023年第3期4卷 112-125页

作者： Yanhui Zhang Xiaofei Liang Mengxin Zhao Tuo Qi Hualong Guo Jing Zhao Jie Zhao Gangming Zhan Zhensheng Kang Li Zheng State Key Laboratory of Crop Stress Biology for Arid Areas and College of plant Protection Northwest A&F UniversityYanglingShaanxi 712100China Sanya Nanfan Research Institute of Hainan University Hainan Yazhou Bay Seed LaboratorySanya 572025China Key Laboratory of Green Prevention and control of Tropical plant diseases and pests Ministry of Education and School of Plant ProtectionHainan UniversityHaikouHainan 570228China State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China State Key Laboratory of Hybrid RiceKey Laboratory of Major Crop Diseases&Collaborative Innovation Center for Hybrid Rice in Yangtze River BasinRice Research InstituteSichuan Agricultural University at WenjiangChengduSichuan 611130China

Here we describe a novel narnavirus,Puccinia striiformis virus 5(PsV5),from the devastating wheat stripe rust fungus *** ***(Pst).The genome of PsV5 contains two predicted open reading frames(ORFs)that largely overlap on reverse strands:an RNA-dependent RNA polymerase(RdRp)and a reverseframe ORF(rORF)with unknown *** translations of both ORFs were demonstrated by immune *** wheat lines overexpressing PsV5(RdRp-rORF),RdRp ORF,or rORF were more susceptible to Pst infection,whereas PsV5-RNA interference(RNAi)lines were more *** of PsV5(RdRp-rORF),RdRp ORF,or rORF in Fusarium graminearum also boosted fungal *** thus report a novel ambigrammatic mycovirus that promotes the virulence of its fungal *** results are a significant addition to our understanding of virosphere diversity and offer insights for sustainable wheat rust disease control.

关键词： Puccinia striiformis f.sp.tritici mycovirus ambigrammatic virulence-enhancing

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Rapid detection of potato late blight using a loop-mediated isothermal amplification assay

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Journal of Integrative Agriculture 2020年第5期19卷 1274-1282页

作者： KONG Liang WANG Hui-bin WANG Shuai-shuai XU Ping-ping ZHANG Ruo-fang DONG Suo-meng ZHENG Xiao-bo department of plant pathology Nanjing Agricultural UniversityNanjing 210095P.R.China Nanjing Exit and Entry Inspection and Quarantine Bureau Nanjing 210001P.R.China Potato Research center Inner Mongolia UniversityHohhot 010021P.R.China The Key Laboratory of Integrated Management of Crop diseases and pests Ministry of EducationNanjing 210095P.R.China

Potato late blight caused by Phytophthora infestans is one of the most destructive plant diseases that threaten global food security. Early and effective diagnosis of P. infestans is required before disease management decisions are made. Here, we developed a quick protocol to detect P. infestans based on a loop-mediated isothermal amplification(LAMP) assay. The P. infestans specific multiple copy DNA sequences(PiSMC), a transposon-like element, provides an ideal target for molecular detection of this pathogen. We designed highly specific and sensitive primers allowing effective LAMP detection of the pathogen at 64℃ in 70 min. In the validation assay, all 15 P. infestans isolates collected from China, Europe and South America could be positively detected, but results of the other 9 Phytophthora species infecting different plants, fungal and bacterial plant pathogens tested were negative. The detection limit of this assay is 1 pg P. infestans DNA. Moreover, the LAMP-PiSMC assay is able to detect P. infestans from infected leaves, tubers and soil. Taken together, this study reports the development of a specific and sensitive LAMP-PiSMC assay for early diagnosis of potato late blight.

关键词： Phytophthora infestans potato late disease LAMP assay diagnostic detection

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Arthropods and biofuel production systems in North America

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Insect Science 2010年第3期17卷 220-236页

作者： Douglas A. Landis Benjamin P. Werling department of Entomology and Great Lakes Bioenergy Research Center 204 Center for Integrated Plant Systems Michigan State University East Lansing Michigan USA

Biomass harvest may eventually be conducted on over 100 000 000 ha of US crop and forest lands to meet federally-mandated targets for renewable biofuels. Such largescale land use changes could profoundly impact working landscapes and the arthropod communities that inhabit them. We review the literature on dedicated biofuel crops and biomass harvest from forests to look for commonalities in arthropod community responses. With expanded biofuel production, existing arthropod pests of biofuel crops will likely become more important and new pests will emerge. Beneficial arthropods will also be influenced by biofuel crop habitats, potentially altering the distribution of pollination and pest control services to the surrounding landscape. Production of biofuel crops including initial crop selection, genetic improvement, agronomic practices, and harvest regimes will also influence arthropod communities. In turn, arthropods will impact the productivity and species composition of biomass production systems. Some of these processes have the potential to cause landscape-level changes in arthropod community dynamics and insect- vectored plant diseases. Finally, changes in arthropod populations and their spatiotemporal distribution in the landscape will have impacts on consumers of insects at higher trophic levels, potentially influencing their population and community dynamics and producing feedbacks to arthropod communities. Given that dedicated biofuel crops and intensified biomass harvest from forests are still relatively uncommon in North America, as they increase, we anticipate ＇predictably unpredictable＇ shifts in arthropod communities and the ecosystem services and functions they support. We suggest that research on arthropod dynamics within biofuel crops, their spillover into adjacent habitats, and implications for the sustainability of working landscapes are critical topics for both basic and applied investigations.

关键词： biodiversity land use change pest management

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