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Characterization of core maize volatiles induced by Spodoptera frugiperda that alter the mating-mediated approach–avoidance behaviors of Mythimna separata

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Journal of Integrative Agriculture 2025年第2期24卷 655-667页

作者： Denghai Yang Hengzhe Fan Ruyi Hu Yong Huang Chengwang Sheng Haiqun Cao Bin Yang Xingchuan Jiang Anhui Province Key Laboratory of Crop Integrated Pest Management/Key Laboratory of Biology and Sustainable Management of plant diseases and pests of Anhui Higher Education institutes College of Plant ProtectionAnhui Agricultural University State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural Sciences

The fall armyworm(Spodoptera frugiperda) is an invasive species and a destructive pest of maize, which significantly impacts native species and communities via complex mechanisms like competition for resources. However, the interaction between S. frugiperda and local pests remains unclear. In this study, we determined that Oriental armyworm(Mythimna separata) females with different mating status displayed different approach–avoidance behaviors towards maize which was infested by S. frugiperda larvae. The virgin M. separata females were repelled, while the mated females were attracted by the S. frugiperda-infested maize. To further understand the olfactory mechanism of this phenomenon, seven volatiles induced by S. frugiperda in maize were characterized by gas chromatography and mass spectrometry(GC-MS), including trans-2-hexenal, linalool, trans-β-farnesene, cis-3-hexenyl acetate, β-caryophyllene, trans-α-bergamotene, and isopentyl acetate. Additionally, electrophysiological and behavioral assays of the seven compounds were performed using both virgin and mated females of M. separata. We determined that virgin and mated females displayed different responses to the herbivore-induced plant volatile(HIPV).Trans-β-farnesene was the core compound for repelling virgin females, and trans-2-hexenal was the key attractant for oviposition in mated female M. separata individuals. These findings help our comprehension of the relationships between maize pests and offer new possibilities for controlling them by olfactory-based strategies.

关键词： chemical ecology mating behavior attractants repellents HIPVs plant volatiles

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Lysobacter enzymogenes:A fully armed biocontrol warrior

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Journal of Integrative Agriculture 2025年第1期24卷 23-35页

作者： Long Lin Xiaolong Shao Yicheng Yang Aprodisia Kavutu Murero Limin Wang Gaoge Xu Yangyang Zhao Sen Han Zhenhe Su Kangwen Xu Mingming Yang Jinxing Liao Kaihuai Li Fengquan Liu Guoliang Qian Key Laboratory of Integrated Management of Crop diseases and pests/College of plant Protection Nanjing Agricultural UniversityNanjing210095China institute of plant Protection Jiangsu Academy of Agricultural SciencesNanjing 210014China Integrated Pest Management Innovation Center of Hebei Province Plant Protection InstituteHebei Academy of Agriculture and ForestrySciencesBaoding 071000China Marine Agriculture research Center Tobacco Research InstituteChinese Academy of Agricultural SciencesQingdao 266101China Collegeof plant Protection Northwest A&FUniversityYangling 712100China Hunan Provincial Key Laboratory for Biology and Control of plant diseases and plant pests College of Plant ProtectionHunan AgriculturalUniversityChangsha 410128China Department of plant Pathology College of AgricultureGuizhou UniversityGuiyang 550025China

Lysobacter enzymogenes is less-studied, but emerging as a powerful biocontrol bacterium producing multiple antimicrobial weapons including lytic enzymes, toxins, secondary metabolites and protein secretion *** loss of surface-attached flagellum, production of heat-stable antifungal factor(HSAF, also named as Ningrongmycin) as a novel antifungal antibiotic, and the use of the type Ⅳ secretion system(T4SS) rather than the common type Ⅵ secretion system(T6SS) to kill competitor bacteria make this species unique. These distinct features set L. enzymogenes apart from well-studied plant beneficial biocontrol agents, such as Bacillus and Pseudomonas. This review describes what takes L. enzymogenes to be a unique biocontrol warrior by focusing to illustrate how the lack of flagellum governs morphological and functional co-adaptability, what adapted signaling transduction pathways are adopted to coordinate the biosynthesis of HSAF, and how to ecologically adapt plant rhizosphere by cell-to-cell interacting with microbiome members via the bacterial-killing T4SS.

关键词： Lysobacter enzymogenes antimicrobial metabolites loss of flagell typeⅣsecretion system

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Crop disease resistance:Genes,mechanisms,and breeding

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The Crop Journal 2025年第1期13卷 3-4页

作者： Yuese Ning Zhiyong Liu State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Key Laboratory of Seed Innovation Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

Crop disease is best combated with host resistance,this approach rests on an understanding of pathogen-host interaction mechanisms and the availability of resistance genes and breeding *** special issue collects 12 ar... 详细信息

关键词： breeding materials. Crop

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Genome-wide identification and characterization of putative effectors in Heterodera schachtii that suppress plant immune response

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Journal of Integrative Agriculture 2025年第1期24卷 196-208页

作者： Ke Yao Menghan Zhang Jianjun Xu Deliang Peng Wenkun Huang Ling'an Kong Shiming Liu Guangkuo Li Huan Peng State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis Institute of Plant ProtectionXinjiang Academy of Agricultural Sciences/Scientific Observing and Experimental Station of KorlaMinistry of Agriculture and Rural AffairsUrumqi 830013China Zhongyuan research Center Chinese Academy of Agricultural SciencesXinxiang 453000China

The sugar beet cyst nematode(Heterodera schachtii) is one of the most destructive pathogens in sugar beet production, which causes serious economic losses every year. Few molecular details of effectors of H. schachtii parasitism are known. We analyzed the genome and transcriptome data of H. schachtii and identified multiple potential predicted proteins. After filtering out predicted proteins with high homology to other plant-parasitic nematodes, we performed functional validation of the remaining effector proteins. 37 putative effectors of H. schachtii were screened based on the Nicotiana benthamiana system for identifying the effectors that inhibit plant immune response, eventually determines 13 candidate effectors could inhibit cell death caused by Bax. Among the 13 effectors, nine have the ability to inhibit GPA2/RBP1-induced cell death. All 13 effectortriggered immunity(ETI) suppressor genes were analyzed by qRT-PCR and confirmed to result in a significant downregulation of one or more defense genes during infection compared to empty vector. For in situ hybridization,13 effectors were specifically expressed and located in esophageal gland cells. These data and functional analysis set the stage for further studies on the interaction of H. schachtii with host and H. schachtii parasitic control.

关键词： sugar beet cyst nematode Heterodera schachti effector-triggered immunity hypersensitive response effector

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Mechanism study of the molluscicide candidate PBQ on Pomacea canaliculata using a viscosity-sensitive fluorescent probe

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Chinese Chemical Letters 2025年第1期36卷 447-452页

作者： Lanyun Zhang Weisi Wang Yu-Qiang Zhao Rui Huang Yuxun Lu Ying Chen Liping Duan Ying Zhou Yunnan Characteristic plant Extraction Laboratory College of Chemical Science and TechnologyYunnan UniversityKunming 650091China National institute of Parasitic diseases Chinese Center for Disease Control and PreventionChinese Center for Tropical Diseases ResearchWHO Centre for Tropical DiseasesNational Key Laboratory of Inteligent Tracking and Forecasting for Infectious DiseasesKey Laboratory on Parasite and Vector Biology MinistryofHealthShanghai200025China

PBQ[1-(4-chlorophenyl)-3-(pyridin-3-yl)urea],an enormous potent molluscicide,showed excellent Pomacea canaliculata(***)control activity and low toxicity for other aquatic organisms,but its snail-killing mechanisms are still not fully *** employed an optical method to elucidate PBQ action via a novel fluorescent viscosity probe,*** the viscosity in the test solutions increased,compared with that in pure ethanol,a 54-fold fluorescence intensity enhancement of NCV was observed in 310 cP of 90%***,NCV successfully exhibited a selective fluorescence response towards monensin-induced cellular viscosity changes in HepG2 *** liver,stomach,and foot plantar of the tested snails were frozen and sectioned for fluorescent imaging experiments after the treatment with different PBQ concentrations over various times.A significant fluorescent increase in the snail's liver was observed upon exposure to 0.75 mg/L PBQ for 72 h,which highlighted an increase in *** and eosin(HE)staining further supported PBQ-induced liver damage with a viscosity increase in *** study provides a new rapid optical visualization method to study the killing mechanisms of PBQ and may help discover new chemicals that control snail populations.

关键词： Fluorescence sensor Viscosity Pomacea canaliculata Molluscicide mechanisms Bio-imaging

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Twinstar is a chitin synthase interacting protein with an essential role in insect cuticle biosynthesis

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Journal of Integrative Agriculture 2025年第1期24卷 209-219页

作者： Xu Zou Jiqiang Chen Yanwei Duan Weixing Zhu Qing Yang State Key Laboratory for Biology of plant diseases and Insect pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China Shenzhen Branch Guangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China

Chitin is an abundant natural biopolymer that plays a crucial role in insect growth and development as a fundamental structural component of the *** membrane-integralβ-glycosyltransferase,chitin synthase,has been identified as the central component in chitin ***,the precise roles of other proteins in facilitating chitin synthase in chitin biosynthesis remain *** this study,we employed split-ubiquitin membrane yeast two-hybrid(MYTH)and pull-down assays to demonstrate the physical interaction between Twinstar(Tsr),a small molecular protein in the actin-depolymerizing factor ADF/Cofilin protein family,and chitin synthase Krotzkopf verkehrt(Kkv)in Drosophila melanogaster in *** RNA interference(RNAi)-mediated global knockdown of Tsr in *** resulted in larval ***,targeted suppression of Tsr in the tracheal and epidermal tissues also led to larval mortality,while knocking down Tsr in the wing tissues led to wrinkled ***,silencing Tsr not only reduced the chitin content in the first longitudinal vein of the wings but also led to the absence of the chitin lamellar *** validate the functional conservation of Tsr in other insect orders,the two agricultural pests Ostrinia furnacalis and Tribolium castaneum,representing lepidoptera and coleoptera insects,respectively,were *** experiments targeting the Drosophila Tsr orthologues OfTsr in *** and TcTsr in *** produced abnormal larvae during molting or pupation in *** and lethality in *** findings not only improve ourknowledge of the chitin biosynthesis machinery in insect cuticles but also provide new potential targets for the control of major agricultural pests.

关键词： chitin chitin synthase Twinstar insect cuticle pest control

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Genome-wide identification of yellow gene family in Hermetia illucens and functional analysis of yellow-y by CRISPR/Cas9

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Insect Science 2025年第1期32卷 115-126页

作者： Yongcheng Dong Xiaomiao Xu Lansa Qian Zongqing Kou Awawing A.Andongma Lijun Zhou Yongping Huang Yaohui Wang Key Laboratory of Biology and Sustainable Management of plant diseases and pests of Anhui Higher Education Insttutes College of Plant ProtectionAnhui Agricultural UniversityHefeiChina Chinese Academy of Sciences(CAS)Key Laboratory of Insect Developmental and Evolutionary Biology CAS Center for Excellence in Molecular Plant SciencesCASShanghaiChina Insect and Parasite Ecology Group Lancaster Environment CentreLancaster UniversityLancasterUK School of Environmental Science and Engineering Shanghai Jiao Tong UniversityShanghaiChina

The yellow gene family plays a crucial role in insect *** has potential for use as a visible marker gene in genetic manipulation and transgenic engineering in several model and non-model ***,yellow genes have rarely been identified in Stratiomyidae species and the functions of yellow genes are relatively *** the present study,we first manually annotated and curated 10 yellow genes in the black soldier fly(BSF),Hermetia illucens(Stratiomyidae).Then,the conserved amino acids in the major royal jelly proteins(MRJPs)domain,structural architecture and phylogenetic relationship of yellow genes in BSF were *** found that the BSF yellow-y,yellow-c and yellow-f genes are expressed at all developmental stages,especially in the prepupal *** the clustered regularly interspaced short palindromic repeats(CRISPR)/CRISPR-associated protein 9(Cas9)system,we successfully disrupted yellow-y,yellow-c and yellow-f in the ***,the mutation of yellow-y clearly resulted in a pale-yellow body color in prepupae,pupae and adults,instead of the typical black body color of the wild ***,the mutation of yellow-c or yellow-f genes did not result in any change in color of the insects,when compared with the wild *** study indicates that the BSF yellow-y gene plays a role in body pigmentation,providing an optimal marker gene for the genetic manipulation of BSF.

关键词： CRISPR-Cas9 Hermetia illucens pigmentation yellow family yellow-y

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RPSR1,a major quantitative trait locus for Pythium stalk rot resistance in maize

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The Crop Journal 2025年第1期13卷 51-61页

作者： Shengfeng He Junbin Chen Chuang Liu Dandan Liu Lei Wang Canxing Duan Wangsheng Zhu State Key Laboratory of Maize Bio-breeding/College of plant Protection/Ministry of Agriculture and Rural Affairs Key Laboratory of Surveillance and Management for plant Quarantine pests China Agricultural UniversityBeijing 100193China institute of plant Sciences University of BernAltenbergrain 213013 BernSwitzerland institute of Crop Sciences Chinese Academy of Agricultural SciencesBeijing 100081China

Pythium stalk rot(PSR)is a destructive disease of maize,severely affecting yield and grain *** identification of quantitative trait loci(QTL)or genes for resistance to PSR forms the basis of diseaseresistant hybrids *** this study,a major QTL,Resistance to Pythium stalk rot 1(RPSR1),was identified from a set of recombinant inbred lines derived from MS71 and *** a recombinant progeny testing strategy,RPSR1 was fine-mapped in a 472 kb *** candidate gene expression,gene knock-down and knock-out studies,a leucine-rich repeat receptor-like kinase gene,PEP RECEPTOR 2(ZmPEPR2),was assigned as a PSR resistance *** results provide insights into the genetic architecture of resistance to PSR in maize,which should facilitate breeding maize for resistance to stalk rot.

关键词： Maize Pythium stalk rot Quantitative trait loci(QTL) LRR-RLK ZmPEPR2

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Unveiling phosphofructokinase as the key target: an innovative strategy combining pull-down assays with optical imaging for snail-killing mechanism exploration

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Science China Chemistry 2025年

作者： Yuxun Lu Weisi Wang Le Yu Yuqiang Zhao Ying Chen Yunhai Guo Bingrong Luo Yuhua Liu Shizhu Li Liping Duan Ying Zhou Yunnan Characteristic plant Extraction Laboratory College of Chemical Science and Technology Yunnan University College of Biological and Chemical Engineering Guangxi University of Science and Technology National institute of Parasitic diseases Chinese Center for Disease Control and Prevention (Chinese Center for Tropical Diseases Research)NHC Key Laboratory of Parasite and Vector Biology WHO Collaborating Centre for Tropical Diseases National Center for International Research on Tropical Diseases School of Chemistry and Environment Yunnan Minzu University Dali institute of Schistosomiasis Control

The Pomacea canaliculata, also known as apple snail, is an invasive species in China, posing a serious threat to agricultural production and public health. To prevent its rampant infestation, we developed a highly efficient snail-killing lead compound, 1-(4-chlorophenyl)-3-(pyridin-3-yl)urea (PBQ). However, the killing mechanism of PBQ remains unclear. To elucidate this, two novel compounds, B-PBQ and J-PBQ, were developed through structural modification of PBQ and were used, through both protein pull-down assay and confocal laser scanning microscopy imaging, to identify and confirm that phosphofructokinase(PFK) in the apple snail is the primary target protein of PBQ. Further studies revealed that PBQ successfully inhibits the activity,content, and expression of PFK in apple snail, disrupting the glycolysis pathway and leading to abnormal energy *** disruptions impair the snail’s tolerance to low oxygen, resulting in its efficient eradication. These findings offer a promising direction for developing next-generation PFK-targeted snail-killing pesticides. Furthermore, the strategy of combining pull-down assays with optical imaging used in this work provides a novel approach for the exploration of mechanisms of other pesticide candidates.

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Puccinia triticina effector Pt-1234 modulates wheat immunity by targeting transcription factor TaNAC069 via its C subdomain

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The Crop Journal 2025年第1期13卷 69-78页

作者： Huaimin Geng Yanjun Zhang Zhen Qin Shen Wang Changshan Liu Zhongchi Cui Daqun Liu Haiyan Wang College of plant Protection Hebei Agricultural University/Technological Innovation Center for Biological Control of Crop Diseases and Insect Pests of Hebei ProvinceBaoding 071000HebeiChina Department of Resource and Environmental Engineering Xingtai Polytechnic CollegeXingtai 054000HebeiChina institute of Cereal and Oil Crops Hebei Academy of Agricultural and Forestry Sciences/Hebei Laboratory of Crop Genetic and BreedingShijiazhuang 050035HebeiChina

The NAC(NAM,ATAF1/2,and CUC2)is a defense-associated transcription factor(TF)family that positively regulates defense responses to pathogen ***069 positively regulates resistance in wheat to Puccinia triticina(Pt).However,the molecular mechanism of its interaction with a Pt effector is not *** found that Pt effector Pt-1234 interacts with TaNAC069 to subvert host immunity during Pt *** real-time PCR analysis showed that expression of Pt-1234 was significantly upregulated during the early stage of Pt ***-mediated cell death assays in wheat showed that the Pt-1234 protein was unable to induce cell death in wheat near-isogenic lines carrying different leaf rust resistance genes,whereas it suppressed BAX-induced cell death in leaves of Nicotiana *** of Pt-1234 by host-induced gene silencing(HIGS)significantly reduced the virulence of Pt in the susceptible wheat variety *** C subdomain of TaNAC069 was responsible for its interaction with Pt-1234,and the E subdomain was required for TaNAC069-mediated defense responses to Pt in *** findings indicate that Pt utilizes Pt-1234 to interact with wheat transcription factor TaNAC069 through its C subdomain,thereby modulating wheat immunity.

关键词： Effectors NAC transcription factor Host-induced gene silencing Puccinia triticina Triticum aestivum

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