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n-octyl acrylate is a candidate sex pheromone component involved in courtship in parasitoid wasp Microplitis mediator

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Insect Science 2024年第4期31卷 1200-1210页

作者： Yu-Xiao Tao Shuang Shan Youssef Dewer Shan-Ning Wang Adel Khashaveh Rui-Jun Li Yong-Jun Zhang State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina College of plant Protection Agricultural University of HebeiBaodingHebei ProvinceChina Bioassay Research department Central Agricultural Pesticide LaboratorySabahia Plant Protection Research StationAgricultural Research CenterAlexandriaEgypt Beijing Key Laboratory of Environment Friendly Management on Fruit diseases and pests in North China Institute of Plant ProtectionBeijing Academy of Agriculture and Forestry SciencesBeijingChina

Sex pheromones are considered to play critical roles in partner communication of most parasitic ***,the identification of sex pheromone components remains limited to a few families of parasitoid *** this study,we functionally characterized a candidate sex pheromone component in Microplitis mediator(Hymenoptera:Braconidae),a solitary parasitoid of Noctuidae *** found that the body surface extract from female wasps could significantly stimulate courtship behavior of *** chromatography-electroantennographic detection(GC-EAD)analysis revealed that a candidate semiochemical from extract triggered significant electrophysiological response of antennae of *** performing gas chromatography-mass spectrometer(GC-MS)measurement,GC-EAD active compound was identified as n-octyl acrylate,a candidate sex pheromone component in female *** electroantennogram(EAG)tests,antennae of male wasps showed significantly higher electrophysiological responses to n-octyl acrylate than those of females.Y-tube olfactometer assays indicated that male wasps significantly chose n-octyl acrylate compared with the ***,male wasps showed a remarkable preference for n-octyl acrylate in a simulated field condition behavioral trial;simultaneously,n-octyl acrylate standard could also trigger significant courtship behavior in *** propose that n-octyl acrylate,as a candidate vital sex pheromone component,could be utilized to design behavioral regulators of *** to implement the protection and utilization of natural enemies.

关键词： behavioral assay courtship behavior GC-EAD analysis Microplitis mediator sex pheromone

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plant virology in the 21st century in China:Recent advances and future directions

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Journal of Integrative plant Biology 2024年第3期66卷 579-622页

作者： Jianguo Wu Yongliang Zhang Fangfang Li Xiaoming Zhang Jian Ye Taiyun Wei Zhenghe Li Xiaorong Tao Feng Cui Xianbing Wang Lili Zhang Fei Yan Shifang Li Yule Liu Dawei Li Xueping Zhou Yi Li State Key Laboratory for Ecological Pest control of Fujian and Taiwan Crops Vector-borne Virus Research CenterCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhou 350002China State Key Laboratory of plant Environmental Resilience and Ministry of Agriculture Key Laboratory of Soil Microbiology College of Biological SciencesChina Agricultural UniversityBeijing 100193China State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China State Key Laboratory of Integrated Management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijing 100101China CAS center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of plant Genomics Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China State Key Laboratory of Rice Biology Institute of BiotechnologyZhejiang UniversityHangzhou 310058China department of plant pathology The Key Laboratory of Plant ImmunityNanjing Agricultural UniversityNanjing 210095China State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products Institute of Plant VirologyNingbo UniversityNingbo 315211China MOE Key Laboratory of Bioinformatics Center for Plant BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China State Key Laboratory of Protein and plant Gene Research School of Life SciencesPeking UniversityBeijing 100871China

plant viruses are a group of intracellular pathogens that persistently threaten global food *** advances in plant virology have been achieved by Chinese scientists over the last 20 years,including basic research and technologies for preventing and controlling plant viral ***,we review these milestones and advances,including the identification of new crop-infecting viruses,dissection of pathogenic mechanisms of multiple viruses,examination of multilayered interactions among viruses,their host plants,and virus-transmitting arthropod vectors,and in-depth interrogation of plantencoded resistance and susceptibility ***,various plant virus-based vectors have also been successfully developed for gene function studies and target gene expression in *** also recommend future plant virology studies in China.

关键词： China emerging plant viruses plant virology plant resistance/susceptibility to viral infection plant-virus transmission vector interactions plant virus-based vectors viral pathogenesis

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Establishment of a system for screening and identification of novel bactericide targets in the plant pathogenic bacterium Xanthomonas oryzae pv. oryzae using Tn-seq and SPR

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Journal of Integrative Agriculture 2024年第5期23卷 1580-1592页

作者： Chaoyue Pang Ling Jin Haoyu Zang Damalk Saint-Claire SKoklannou Jiazhi Sun Jiawei Yang Yongxing Wang Liang Xu Chunyan Gu Yang Sun Xing Chen Yu Chen School of plant Protection Anhui Agricultural UniversityHefei 230036China Institute of plant Protection and Agro-Products Safety Anhui Academy of Agricultural SciencesHefei 230031China Anhui province Laboratory for Green Pesticide Development and Application School of Plant ProtectionAnhui Agricultural UniversityHefei230036China Hefei Research center State Key Laboratory for Biology of Plant Diseases and Insect PestsHefei 230036China Key Laboratory of Integrated Crop Pest Management of Anhui province School of Plant ProtectionAnhui Agricultural University Hefei230036China Shandong Vicome Greenland Chemical Co. Ltd.Jinan 250204China

Xanthomonas spp. cause severe bacterial diseases. However, effective strategies for prevention and management of these diseases are scarce. Thus, it is necessary to improve the efficiency of control of diseases caused by Xanthomonas. In this study, Xanthomonas oryzae pv. oryzae(Xoo), which causes rice bacterial leaf blight, has been studied as a representative. A transposon insertion library of Xoo, comprising approximately 200,000 individual insertion mutants, was generated. Transposon sequencing data indicated that the mariner C9 transposase mapped at 35.7–36.4% of all potential insertion sites, revealing 491 essential genes required for the growth of Xoo in rich media. The results show that, compared to the functions of essential genes of other bacteria, the functions of some essential genes of Xoo are unknown, 25 genes might be dangerous for the Xanthomonas group, and 3 are specific to Xanthomonas. High-priority candidates for developing broad-spectrum, Xanthomonas-specific, and environment-friendly bactericides were identified in this study. In addition, this study revealed the possible targets of dioctyldiethylenetriamine using surface plasmon resonance(SPR) in combination with high performance liquid chromatography–mass spectrometry(HPLC–MS). The study also provided references for the research of some certain bactericides with unknown anti-bacterial mode of action. In conclusion, this study urged a better understanding of Xanthomonas,provided meaningful data for the management of bacterial leaf blight, and disclosed selected targets of a novel bactericide.

关键词： rice bacterial leaf blight Xanthomonas essential genes Tn-seq dioctyldiethylenetriamine

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A glycine-rich nuclear effector VdCE51 of Verticillium dahliae suppresses plant immune responses by inhibiting the accumulation of GhTRXH2

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The Crop Journal 2024年第4期12卷 1137-1149页

作者： Chi Li Yingqi Huang Wenjing Shang Jieyin Chen Steven J.Klosterman Krishna V.Subbarao Jun Qin Xiaoping Hu State Key Laboratory of Crop Stress Resistance and High-Efficiency Production Key Laboratory of Plant Protection Resources and Pest Management of Ministry of EducationKey Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural AffairsCollege of Plant ProtectionNorthwest A&F UniversityYangling 712100ShaanxiChina State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Western Agricultural Research center Chinese Academy of Agricultural SciencesChangji 831100XinjiangChina Agricultural Research Service United States Department of AgricultureSalinasCA 93905USA department of plant pathology University of CaliforniaDavisc/o United States Agricultural Research StationSalinasCA 93905USA

Verticillium dahliae is an important soil-borne fungal pathogen that causes great yield losses in many cash *** of this fungus are known to regulate plant immunity but the mechanism much remains unclear.A glycine-rich nuclear effector,VdCE51,was able to suppress immune responses in tobacco against Botrytis cinerea and Sclerotinia *** effector was a required factor for full virulence of ***,and its nuclear localization was a requisite for suppressing plant *** thioredoxin GhTRXH2,identified as a positive regulator of plant immunity,was a host target of *** findings show a virulence regulating mechanism whereby the secreted nuclear effector VdCE51 interferes with the transcription of PR genes,and the SA signaling pathway by inhibiting the accumulation of GhTRXH2,thus suppressing plant immunity.

关键词： Verticillium dahliae plant immunity Effector Thioredoxin

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A novel semi-dominant allele of the transmembrane NAC transcription factor ZmNTL2 reduces the size of multiple maize organs

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The Crop Journal 2024年第3期12卷 676-687页

作者： Chuan Li Yun Bai Yuwei Hou Siyu Wang Yue Xin Tao Yu Jing Wang Xiaowei Liu Hongyang Yi Chao Xia Hai Lan Moju Cao State Key Laboratory of Crop Gene Exploration and Utilization in Southwest China Maize Research InstituteSichuan Agricultural UniversityChengdu 611130SichuanChina Jilin Engineering Research center for Crop Biotechnology Breeding College of Plant ScienceJilin UniversityChangchun 130012JilinChina

Maize plant architecture influences planting density and,in turn,grain *** of the plant architecture-related traits can be described as organ *** describe a miniature maize mutant,Tiny plant 4(Tip4),which exhibits reduced size of multiple organs and exhibits a semi-dominant monofactorial inheritance *** cloning confirmed that a 4-bp deletion in the NAC TF with transmembrane motif 1-Like(NTL)gene ZmNTL2,denoted as ZmNTL2^(Δ),confers the Tip4 ***-PCR showed that ZmNTL2 was expressed in all tested ***2 functions as a transcriptional activator and is located in both the nucleus and *** mutation does not affect the mRNA abundance of ZmNTL2 locus,but it does result in the loss of transmembrane domain and confines the ZmNTL2^(Δ)protein to the *** out ZmNTL2 has no effect on maize organ size development,indicating that the 4-bp deletion might be a gain-of-function mutation in organ size *** transcriptome sequencing with cytokinin and auxin content determination suggests that the decreased organ size may be possibly mediated by changes in hormone homeostasis.

关键词： Organ size c-ray mutagenesis Membrane-bound NAC TF Hormone homeostasis Maize

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Postulation of Leaf Rust Resistance Genes in Seven Chinese Spring Wheat Cultivars

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Journal of Integrative Agriculture 2013年第9期12卷 1580-1588页

作者： SHI Li-hong ZHANG Na HU Ya-ya WEI Xue-jun YANG Wen-xiang LIU Da-qun department of plant pathology College of Plant Protection/Biological Control Center for Plant Diseases and Plant Pests of HebeiAgricultural University of Hebei

To detect the leaf rust resistance genes in the 7 Chinese spring wheat clultivars Shenmian 99025, Shenmia 99042, Shenmian 85, Shenmian 91, Shenmian 96, Shenmian 1167 and Shenmian 962, Thatcher, Thatcher backgrounded near-isogenic lines and 15 pathotypes of P. triticina were used for gene postulate at the seedling stage, and 9 of the 15 pathotypes were used in the field tests. Molecular markers closely linked to, or co-segregated with resistance genes Lrl, Lr9, LrlO, Lrl9, Lr20, Lr21, Lr24, Lr26, Lr28, Lr29, Lr32, Lr34, Lr35, Lr37, Lr38, and Lr47 were screened to assist detection of the resistance genes. As results, 4 known resistance genes, including Lrl, Lr9, Lr26, and Lr34, and other unknown resistance genes were postulated singly or in combination in the tested cultivars. Shenmian 85, Shenmian 91, Shenmian 96, Shenmian 962, Shenmian 1167, and Shenmian 99042 are potentially useful for wheat production and breeding programs. The result suggested that combining gene postulation, molecular markers and pedigrees is effective and more accuracy method to know the resistance genes in cultivars.

关键词： gene postulation molecular marker Triticum aestivum Puccinia triticina resistance gene

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Identification and Molecular Tagging of Leaf Rust Resistance Gene (Lr24) in Wheat

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Agricultural Sciences in China 2011年第12期10卷 1898-1905页

作者： ZHANG Na YANG Wen-xiang LIU Da-qun department of plant pathology/biological control center of plant diseases and plant pests of hebei province Agricultural University ofHebei Baoding 071001 P.R.China

This research was aimed to develop AFLP markers co-segregated with gene Lr24 and validate the using for marker assisted selection （MAS）. An F2 population developed from the cross between the resistant line TcLr24 and the susceptible line Thatcher was tested for resistance to the Puccinia triticina races BGQQ and SHRT using for genetic analysis and molecular marker. A total of 224 AFLP primer combinations were used to test the resistant and susceptible parents, as well as the resistant bulk and the susceptible bulk. Four AFLP markers, P-AGA/M-CTT289 bp, P-AGC/M-CAC1ss bp, P-AGC/M- CAC162 bp, and P-ACG/M-CGC239 bp, were co-segregated with Lr24. The AFLP fragment from the primer combination P- ACG/M-CGC was cloned, sequenced and converted into a STS marker named as ASTS212. Thatcher backgrounded NILs and 115 varieties were examined by using this STS marker and the marker SCS13026oz developed by Gupta. 5R615, 5R616, IR13, and 1R17 were identified and validated to contain gene Lr24. The marker is dominant and may be useful in identification the resistance gene Lr24 in wheat and wheat breeding programs.

关键词： wheat leaf rust Lr24 gene AFLP STS MAS

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Puccinia triticina effector protein Pt_21 interacts with wheat thaumatin-like protein TaTLP1 to inhibit its antifungal activity and suppress wheat apoplast immunity

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作物学报:英文版 2023年第5期11卷 1431-1440页

作者： Fei Wang Songsong Shen Zhongchi Cui Shitao Yuan Ping Qu Hui Jia Linshuo Meng Xiaoyu Hao Daqun Liu Lisong Ma Haiyan Wang College of plant Protection Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei ProvinceBaoding 071001HebeiChina center of Agriculture Through Science and Education Hebei Agricultural UniversityBaoding 071001HebeiChina The State Key Laboratory of North China Crop Improvement and Regulation Hebei Agricultural UniversityBaoding 071001HebeiChina

Puccinia triticina(Pt), as the causal agent of wheat leaf rust, employs a plethora of effector proteins to modulate wheat immunity for successful colonization. Understanding the molecular mechanisms underlying Pt effector-mediated wheat susceptibility remains largely unexplored. In this study, an effector Pt_21 was identified to interact with the apoplast-localized wheat thaumatin-like protein TaTLP1 using a yeast two-hybrid assay and the Pt_21-TaTLP1 interaction was characterized. The interaction between Pt_21 and TaTLP1 was validated by in vivo co-immunoprecipitation assay. A TaTLP1 variant,TaTLP1C71A, that was identified by the site-directed mutagenesis failed to interact with Pt_21. Pt_21was able to suppress Bax-mediated cell death in leaves of Nicotiana benthamiana and inhibit TaTLP1-mediated antifungal activity. Furthermore, infiltration of recombinant protein Pt_21 into leaves of transgenic wheat line overexpressing TaTLP1 enhanced the disease development of leaf rust compared to that in wild-type leaves. These findings demonstrate that Pt_21 suppresses host defense response by directly targeting wheat TaTLP1 and inhibiting its antifungal activity, which broadens our understanding of the molecular mechanisms underlying Pt effector-mediated susceptibility in wheat.

关键词： Wheat Puccinia triticina Effector Thaumatin-like protein Anitifungal activity

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TaRAR1 is Required for Lr24-Mediated Wheat Leaf Rust Resistance

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Agricultural Sciences in China 2011年第11期10卷 1732-1738页

作者： ZHANG Li-rong YANG Wen-xiang LIU Da-qun College of plant Protection Biological Control Center of Plant Diseases and Pests of Hebei Province Agricultural University of HebeiBaoding 071001 P.R.China

Virus-induced gene silencing （VIGS） offers a rapid and high throughout technology platform for the analysis of gene function in plants. The barley stripe mosaic virus （BSMV） VIGS system was optimized in studies silencing phytoene desaturase expression in wheat, and demonstrated that infection with BSMV construct carrying a 412 bp fragment of TaRAR1 caused conversion of incompatible to compatible interactions to Lr24-mediated resistance in wheat TcLr24 and cultivar 5R615 harboring Lr24 whereas infection with a control construct had no effect on resistance or susceptibility. RT- PCR analysis showed that BSMV-induced gene silencing could be detected at mRNA levels. These studies indicated that TaRAR1 was a required component for Lr24-mediated race-specific resistance and the BSMV-VIGS was a powerful tool for dissecting the genetic pathways of disease resistance in hexaploid wheat.

关键词： disease resistance barley stripe mosaic virus (BSMV) virus-induced gene silencing (VIGS) Lr24 RAR1

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Co-evolved plant and blast fungus ascorbate oxidases orchestrate the redox state of host apoplast to modulate rice immunity

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Molecular plant 2022年第8期15卷 1347-1366页

作者： Jiexiong Hu Muxing Liu Ao Zhang Ying Dai Weizhong Chen Fang Chen Wenya Wang Danyu Shen Mary Jeanie Telebanco-Yanoria Bin Ren Haifeng Zhang Huanbin Zhou Bo Zhou Ping Wang Zhengguang Zhang department of plant pathology College of Plant ProtectionNanjing Agricultural Universityand Key Laboratory of Integrated Management of Crop Diseases and PestsMinistryof EducationNanjingChina The Key Laboratory of plant Immunity Nanjing Agricultural UniversityNanjingChina Genetics and Biotechnology Division International Rice Research InstituteLos BanosLaguna 4031Philippines State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China department of Microbiology Immunologyand ParasitologyLouisiana State University Health Sciences CenterNew OrleansLAUSA

Apoplastic ascorbate oxidases(AOs)play a critical role in reactive oxygen species(RoS)-mediated innate host immunity by regulating the apoplast redox *** date,little is known about how apoplastic effectors of the riceblast fungus Magnaportheoryzaemodulate the apoplast redox state of rice to subvert plant *** this study,we demonstrated that *** MoAo1 is an Ao that plays a role in virulence by modulating the apoplast redox status of rice *** showed that MoAo1 inhibits the activity of rice OsAO3and OsAO4,which also regulate the apoplast redox status and plant *** addition,we found that MoAo1,OsAO3,andOsAO4 allexhibit polymorphic variations whosevaried interactions orchestrate pathogen virulence and rice *** together,our results reveal a critical role for extracellular redox enzymes during rice blast infection and shed light on the importance of the apoplast redox state anditsregulation inplant-pathogeninteractions.

关键词： apoplast redox state RoS ascorbate oxidase polymorphism rice blast host immunity

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