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The Ca^(2+)/CaN/ACC and cAMP/PKA/HK signal pathways are required for PBAN-mediated sex pheromone biosynthesis in Conogethes punctiferalis

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Journal of Integrative Agriculture 2024年第8期23卷 2735-2751页

作者： Yao Zhang Zelong She Ruolan He Shuangyan Yao Xiang Li Xiaoguang Liu Xinming Yin Jizhen Wei Mengfang Du Shiheng An State key {1. of Wheat and Maize Crop Science/Henan International {1. for Green Pest control/College of Plant protection Henan Agricultural UniversityZhengzhou 450046China

Conogethes punctiferalis is a crop and fruit pest that has caused serious economic losses to agricultural *** pest relies heavily on its sex pheromone to ensure sexual encounters and subsequent mating ***,the molecular mechanism underlying sex pheromone biosynthesis in this species remains *** present study investigated the detailed mechanism underlying PBAN-regulated sex pheromone biosynthesis in *** by transcriptome sequencing of the *** pheromone glands(PGs)and subsequent functional identification of the target *** results showed that female mating started from the first scotophase,and peaked at the second to fifth scotophases in accordance with the release of sex *** regulated sex pheromone biosynthesis by employing Ca^(2+)and cAMP as secondary messengers,as demonstrated by RNA interference(RNAi),pharmacological inhibitors,and behavioral *** investigation revealed that calcineurin(CaN)and acetyl-CoA carboxylase(ACC)were activated by PBAN/Ca^(2+)signaling,and the RNAimediated knockdown of CaN and ACC transcripts significantly reduced sex pheromone production,ultimately leading to a significantly reduced ability of females to attract ***,hexokinase(HK)was found to regulate sex pheromone biosynthesis in response to the PBAN/cAMP/PKA signaling pathway,as demonstrated by RNAi,enzyme activity,and pharmacological inhibitor ***,Far2 and Desaturase1.were found to participate in PBAN-regulated sex pheromone ***,our findings revealed that PBAN regulates sex pheromone biosynthesis through the PBANR/Ca^(2+)/CaN/ACC and PBANR/cAMP/PKA/HK pathways in ***,which enriches our comprehension of the details of sex pheromone biosynthesis in moths.

关键词： Conogethes punctiferalis sex pheromone cAMP/PKA calcineurin acetyl-CoA carboxylase hexokinase

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Rice stripe mosaic virus hijacks rice heading‐related gene to promote the overwintering of its insect vector

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Journal of Integrative Plant Biology 2024年第9期66卷 2000-2016页

作者： Siping Chen Xinyi Zhong Zhiyi Wang Biao Chen Xiuqin Huang Sipei Xu Xin Yang Guohui Zhou Tong Zhang Guangdong Province key {1. of Microbial Signals and Disease control College of Plant ProtectionSouth China Agricultural UniversityGuangzhou 510642China State key {1. of Green Pesticide South China Agricultural UniversityGuangzhou 510642China

Rice stripe mosaic virus(RSMV)is an emerging pathogen which significantly reduces rice yields in the southern region of *** is transmitted by the leafhopper Recilia dorsalis,which overwinters in rice *** field investigations revealed that RSMV infection causes delayed rice heading,resulting in a large number of green diseased plants remaining in winter rice *** creates a favorable environment for leafhoppers and viruses to overwinter,potentially contributing to the rapid spread and epidemic of the ***,we explored the mechanism by which RSMV manipulates the developmental processes of the rice plant.A rice heading‐related E3 ubiquitin ligase,Heading date Associated Factor 1.HAF1.,was found to be hijacked by the RSMV‐encoded *** impairment of HAF1.function affects the ubiquitination and degradation of downstream proteins,HEADING DATE 1.and EARLY FLOWERING3,leading to a delay in rice *** results provide new insights into the development regulation‐based molecular interactions between virus and plant,and highlights the importance of understanding virus‐vector‐plant tripartite interactions for effective disease management strategies.

关键词： HAF1 heading leafhoppers overwintering RSMV

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The biosynthesis of alarm pheromone in the wheat aphid Rhopalosiphum padi is regulated by hormones via fatty acid metabolism

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Journal of Integrative Agriculture 2024年第7期23卷 2346-2361页

作者： Chengxian Sun Yaoguo Qin Julian Chen Zhengxi Li Department of Entomology/Ministry of Agriculture key {1. for Monitoring and Environment-friendly control of Crop Pests College of Plant ProtectionChina Agricultural UniversityBeijing 100193China State key {1. for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193China

Aphids are major insect pests in agriculture and forestry *** attacks by natural enemies,many aphids release an alarm pheromone to protect their *** most aphids,the main component of the aphid alarm pheromone(AAP)is the sesquiterpene hydrocarbon(E)-β-farnesene(EβF).However,the mechanisms behind its biosynthesis and regulation remain poorly *** this study,we used the bird cherry–oat aphid Rhopalosiphum padi,which is an important wheat aphid,to investigate the regulatory mechanisms of EβF *** results showed that EβF biosynthesis occurs during the mature embryo period and the molting period of the 1.t-and 2nd-instar *** provide the prerequisite material for EβF production and *** on transcriptome sequencing,RNAi analysis,hormone treatments,and quantitative measurements,we found that the biosynthesis of EβF utilizes acetyl coenzyme A produced from fatty acid degradation,which can be suppressed by juvenile hormone but it is promoted by 20-hydroxyecdysone through the modulation of fatty acid *** is the first systemic study on the modulation of EβF production in *** results of our study provide insights into the molecular regulatory mechanisms of AAP biosynthesis,as well as valuable information for designing potential aphid control strategies.

关键词： (E)-β-farnesene critical period for biosynthesis fatty acid metabolism juvenile hormone 20-hydroxyecdysone

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Characterization of Domeless receptors and the role of Bd Domeless3 in anti-symbiont-like virus defense in Bactrocera dorsalis

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Journal of Integrative Agriculture 2024年第4期23卷 1274-1284页

作者： Wei Zhang Shaoyang Li Rong Li Jinzhi Niu Jinjun Wang key {1. of Entomology and Pest control Engineering College of Plant ProtectionSouthwest UniversityChongqing 400715China key {1. of Agricultural Biosafety and Green Production of Upper Yangtze River Ministry of Education/International Joint Laboratory of China-Belgium on Sustainable Crop Pest ControlAcademy of Agricultural SciencesSouthwest UniversityChongqing 400715China

The Janus kinase/signal transducers and activators of transcription(JAK/STAT)signaling pathway play a pivotal role in innate *** invertebrates,Domeless receptors serve as the key upstream regulators of this *** our study on Bactrocera dorsalis,we identified three cytokine receptors:BdDomeless1.BdDomeless2,and *** receptor encompasses five fibronectin-type-III-like(FN III)extracellular domains and a transmembrane ***,these receptors exhibit the increased responsiveness to diverse pathogenic ***,only BdDomeless3 is upregulated during symbiont-like viral ***,silencing BdDomeless3 enhanced the infectivity of Bactrocera dorsalis cripavirus(BdCV)and *** picorna-like virus(BdPLV),underscoring BdDomeless3’s crucial role in antiviral defense of *** the suppression of Domeless3 expression,six antimicrobial peptide genes displayed decreased expression,potentially correlating with the rise in viral *** our knowledge,this is the first study identifying cytokine receptors associated with the JAK/STAT pathway in tephritid flies,shedding light on the immune mechanisms of ***.

关键词： Bactrocera dorsalis JAK/STAT pathway Domeless receptors antiviral immunity symbiont-like virus

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Peracetic acid catalytic activation using Co3O4 nanocluster decorated graphitic carbon nitride for cefapirin degradation in water

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Science China Technological Sciences 2024年第10期67卷 3103-3115页

作者： YIN ShiMei GAO YiXuan CHEN Long LI Fan LIU XiaoNa QI Fei LIU Wen Beijing key Lab for Source {1. Technology of Water Pollution College of Environmental Science and EngineeringBeijing Forestry University key {1. of Water and Sediment Sciences (Ministry of Education) College of Environmental Sciences and EngineeringPeking University School of Environmental Science and Engineering Taiyuan University of Technology State Environmental protection {1. laboratory of All Material Fluxes in River Ecosystems Peking University Beijing national {1. for Molecular Sciences Peking University

This study innovated cobalt-based catalytic nanocomposites（CCNs） for the heterogeneous activation of peracetic acid（PAA）,a green and efficient advanced oxidation process for removing antibiotics from *** Co3O4catalysts exhibit limited activity due to stable electronic *** overcome this,CCNs were synthesized using a one-step condensation method,incorporating a size control strategy that anchors Co3O4nanoclusters within 4-5 nm onto six-fold cavity of g-C3N4,simultaneously modifying the coordination environment of *** alteration significantly enhances the adsorption energy of PAA and catalytic activity compared to commercial *** improved performance of CCN2,in particular,is attributed to a shift in the cobalt d band center towards the Fermi level,facilitating electron delocalization and transfer,enhancing Co-O bonding,and accelerating PAA ***2's superior activity,with a cefapirin（CFP） degradation kinetic rate constant(k1.0.760 min-1.～1. times that of PAA direct oxidation(k1.0.070 min-1. and～5 times that of commercial Co3O4/PAA system(k1.0.1.4 min-1.,is due to its ability to generate dominant reactive species for antibiotic degradation,including alkoxy radicals(CH3C（=O）OO·),high valence metal(CoⅣ（=O）2+),and singlet oxygen（1.2）,with the latter two being crucial for the degradation *** degradation of CFP involved three mechanisms,including direct oxidation by PAA,decarboxylation,and open-ring reactions at nitrogen *** research provides insights into developing high-activity catalysts for efficient PAA activation and antibiotic removal,leveraging the strategy of shifting the transition metal d band center.

关键词： peracetic acid Co3O4 nanocluster high valence metal singlet oxygen cefapirin

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The MYB transcription factor OsMYBxoc1.regulates resistance to Xoc by directly repressing transcription of the iron transport gene OsNRAMP5 in rice

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Plant Communications 2024年第6期5卷 230-245页

作者： Haimiao Zhang Baolong Sun Wei Wu Yang Li Ziyi Yin Chongchong Lu Haipeng Zhao Lingguang Kong Xinhua Ding State key {1. of Crop Biology Shandong Provincial Key Laboratory of Agricultural MicrobiologyCollege of Plant ProtectionShandong Agricultural UniversityTai’an 271018China

Bacterial leaf streak caused by Xanthomonas oryzae ***(Xoc)is a continuous threat to rice cultivation,leading to substantial yield losses with socioeconomic *** ions are essential mineral nutrients for plant growth,but little information is available on how they influence mechanisms of rice immunity against ***,we investigated the role of the myeloblastosis-related(MYB)transcriptional repressor OsMYBxoc1.in modulation of rice resistance through control of iron ion *** of OsMYBxoc1.significantly increased rice resistance,whereas OsMYBxoc1.RNA-interference lines and knockout mutants showed the opposite *** of OsMYBxoc1.expression dampened the immune response induced by pathogen-associated molecular *** demonstrated that OsMYBxoc1.binds specifically to the OsNRAMP5 promoter and represses transcription of ***5,a negative regulator of rice resistance to bacterial leaf streak,possesses metal ion transport activity,and inhibition of OsMYBxoc1.expression increased the iron ion content in *** of the iondependent H2O2 scavenging enzyme catalase was increased in plants with suppressed expression of OsMYBxoc1.or overexpression of *** found that iron ions promoted Xoc infection and interfered with the production of reactive oxygen species induced by *** type Ⅲ effector XopAK directly inhibited OsMYBxoc1.transcription,indicating that the pathogen may promote its own proliferation by relieving restriction of iron ion transport in *** addition,iron complemented the pathogenicity defects of the RS1.5_DXopAK mutant strain,further confirming that iron utilization by Xoc may be dependent upon *** conclusion,our study reveals a novel mechanism by which OsMYBxoc1.modulates rice resistance by regulating iron accumulation and demonstrates that Xoc can accumulate iron ions by secreting the effector XopAK to promote its own infection.

关键词： pathogen effector plant immunity bacterial leaf streak metal ion

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Genome-wide analysis of Panonychus citrimicro RNAs witha focus on potential insecticidal activity of 4 micro RNAs toeggs and nymphs

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Insect Science 2024年第2期31卷 354-370页

作者： Chuan-Zhen Li Yu-Hang Liu Deng Pan Meng-Hao Xia Qiang Zhang Yu-Chuang Li Guo-Rui Yuan Jin-Jun Wang Wei Dou key {1. of Entomology and Pest control Engineering College of Plant ProtectionAcademy of Agricultural SciencesSouthwestUniversityChongqingChina key {1. of Agricultural Biosafety and Green Production of Upper Yangtze River(Ministry of Education) Academy of Agricultural SciencesSouthwest UniversityChongqingChina

Panonychus citriMcGregor(Acari:Tetranychidae),a destructive citrus pest,causes considerable annual economic losses due to its short lifespan and rapid ***(miRNA)-induced RNA interference is a promising approachfor pest control because of endogenous regulation of pest growth and *** for miRNAs with potential insecticidal activity ***,genome-wide analysis ofmiRNAs at different developmental stages was conducted,resulting in the identificationof 1.6 miRNAs,including 73 known and 63 novel miRNAs.A total of 1. isomiRNAsand 1. duplicated miRNAs were ***-1.and miR-252-5p were identified asreference miRNAs *** *** on differential expressionanalysis,treatments with miR-let-7a and miR-31. mimics and the miR-let-7a antagomirsignificantly reduced the egg hatch rate and resulted in abnormal egg ***-expression or downregulation of miR-34-5p and miR-305-5p through feeding significantlydecreased the adult eclosion rate and caused molting *** 4 miRNAs,miR-let-7a,miR-31.,miR-34-5p,and miR-305-5p,had important regulatory functions and insectici-dal properties in egg hatching and adult *** general,these data advance our un-derstanding of miRNAs in mite biology,which can assist future studies on insect-specificmiRNA-based green pest control technology.

关键词： growth and development microRNAs Panonychus citri referencemiRNAs regulation small RNA libraries

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Degradation behaviors of Nabumetone and its metabolite during UV/monochloramine process:Experimental and theoretical study

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Journal of Environmental Sciences 2024年第8期142卷 103-114页

作者： Xiang Tu Yunsong Bai Qing Fu Sheng Chang Kunfeng Zhang Yang Pan Ruiyang Xiao Yifu Fu Qi Zhang State key {1. of Environmental Criteria and Risk Assessment State Environmental Protection Key Laboratory of Drinking Water Source ProtectionResearch Centre of Lake EnvironmentNational Engineering Laboratory for Lake Pollution Control and Ecological RestorationChinese Research Academy of Environmental SciencesBeijing 100012China School of Environmental Science and Engineering Suzhou University of Science and TechnologySuzhou 215009China Institute of Environmental Engineering School of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China School of Forestry Northeast Forestry UniversityHarbin 150040China

This study investigated degradation behaviors of a nonsteroidal anti-inflammatory drug Nabumetone(NMT)and its major metabolite 6-methoxy-2-naphthylacetic acid(MNA)in the coupling process of ultraviolet and monochloramine(UV/NH2Cl).The second-order rate constants of the contaminants reacting with reactive radicals(HO·,Cl·,Cl_(2)·-,and CO_(3)·^(-))were determined by laser flash photolysis ***·and Cl·contributed predominantly with 52.3%and 21.7%for NMT degradation and 60.8%and 22.3%for MNA *** presence of chlorides retarded the degradation of NMT,while promoted the destruction of MNA,which was ascribed to the photosensitization effects of MNA under UV *** functional theory(DFT)calculations revealed that radical adduct formation(RAF)was dominant pathway for both HO·and Cl·reacting with the contaminants,and hydrogen atom transfer(HAT)preferred to occur on side chains of NMT and *** reacted with NO_(2)·through single electron transfer(SET)with the second-order rate constant calculated to be 5.35×1.^(7)(mol/L)^(-1.sec^(-1.,and the contribution of NO_(2)·was predicted to be 1..0%of the total rate constant of NMT in pure water,which indicated that NO_(2)·played a nonnegligible role in the degradation of *** acute toxicity and developmental toxicity of NMT were enhanced after UV/NH_(2)Cl treatment,while those of MNA were *** transformation products of both NMT and MNA exhibited higher mutagenicity than their parent *** study provides a deep understanding of the mechanism of radical degradation of NMT and MNA in the treatment of UV/NH2Cl.

关键词： UV/NH_(2)Cl Reactive species Degradation kinetics Reaction mechanism Degradation products

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Host-Induced Gene Silencing of Effector AGLIP1.Enhanced Resistance of Rice to Rhizoctonia solani AG1.IA

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Rice science 2024年第4期31卷 463-474,I0031-I0034页

作者： ZHAO Mei LIU Xiaoxue WAN Jun ZHOU Erxun SHU Canwei Pesticide State key {1. of Green Pesticide Guangdong Province Key Laboratory of Microbial Signals and Disease ControlCollege of Plant ProtectionSouth China Agricultural UniversityGuangzhou 510642China College of Life Science and Engineering Henan University of Urban ConstructionPingdingshan 467036China

Rice sheath blight, caused by Rhizoctonia solani AG1.IA, is a major disease in rice-growing areas worldwide. Effectors of phytopathogenic fungi play important roles during the infection process of fungal pathogens onto their host plants. However, the molecular mechanisms by which R. solani effectors regulate rice immunity are not well understood. Through prediction, 78 candidate effector molecules were identified. Using the tobacco rattle virus-host induced gene silencing(TRV-HIGS) system, 45 RNAi constructs of effector genes were infiltrated into Nicotiana benthamiana leaves. The results revealed that eight of these constructs resulted in a significant reduction in necrosis caused by infection with the AG1.IA strain GD-1.8. Additionally, stable rice transformants carrying the double-stranded RNA construct for one of the effector genes, AGLIP1. were generated to further verify the function of this gene. The suppression of the AGLIP1.gene increased the resistance of both N. benthamiana and rice against GD-1.8, and also affected the growth rate of GD-1.8, indicating that AGLIP1.is a key pathogenic factor. Small RNA sequencing showed that the HIGS vectors were processed into si RNAs within the plants and then translocated to the fungi, leading to the silencing of the target genes. As a result, AGLIP1.might be an excellent candidate for HIGS, thereby enhancing crop resistance against the pathogen and contributing to the {1. of R. solani infection.

关键词： Rhizoctonia solani host-induced gene silencing lipase tobacco rattle virus

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Effects of fermented sweet potato residue on nutrient digestibility, meat quality, and intestinal microbes in broilers

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Animal Nutrition 2024年第2期17卷 75-86页

作者： Ting Yao Chenyu Wang Lifen Liang Xuan Xiang Hui Zhou Wentao Zhou Ruoxin Hou Tianli Wang Liuqin He Shiyu Bin Yulong Yin Tiejun Li Hunan Provincial key {1. of Animal Nutritional Physiology and Metabolic Process CAS Key Laboratory of Agro-Ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of Sciences University of Chinese Academy of Sciences Hunan Provincial key {1. of Animal Intestinal Function and Regulation Laboratory of Animal Nutrition and Human HealthCollege of Life SciencesHunan Normal University key {1. of Ecology of Rare and Endangered Species and Environmental protection Ministry of EducationCollege of Life ScienceGuangxi Normal University

This study aimed to investigate the effects of different proportions of dietary fermented sweet potato residue(FSPR) supplementation as a substitute for corn on the nutrient digestibility, meat quality, and intestinal microbes of yellow-feathered broilers. Experiment 1.force-feeding) evaluated the nutrient composition and digestibility of mixtures with different proportions of sweet potato residue(70%, 80%,90%, and 1.0%) before and after fermentation. In Experiment 2(metabolic growth), a total of 420 oneday-old yellow-feathered broilers were randomly allocated to 4 groups and fed corn-soybean mealbased diets with 0, 5%, 8%, and 1.% FSPR as a substitute for corn. The force-feeding and metabolic growth experiments were performed for 9 and 70 d, respectively. The treatment of 70% sweet potato residue(after fermentation) had the highest levels of crude protein, ether extract, and crude fiber and improved the digestibility of crude protein and amino acids(P 1.% FSPR increased the serum immunoglobulin M and immunoglobulin G levels in broilers(P 1.% FSPR increased the Shannon index and Ruminococcaceae＿UCG-01., Ruminococcaceae＿UCG-01. and Romboutsia abundances and decreased Sutterella and Megamonas abundances(P 1.(P 1.%FSPR as a substitute for corn can improve the slaughter performance, meat quality

关键词： Fermented sweet potato residue Meat quality Intestinal microbiota Broiler

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