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The DNA damage repair complex MoMMS21-MoSMC5 is required for infection-related development and pathogenicity of Magnaporthe oryzae

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Journal of Integrative Agriculture 2024年第6期23卷 1956-1966页

作者： Yue Jiang Rong Wang Lili Du Xueyu Wang Xi Zhang Pengfei Qi Qianfei Wu Baoyi Peng Zonghua Wang Mo Wang Ya Li State Key Laboratory of Ecological Pest Control for Fujian and Taiwan Crops Fujian Agriculture and Forestry UniversityFuzhou 350002China State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan Yunnan Agricultural UniversityKunming 650201China Fujian Universities Key Laboratory for plant-microbe interaction Fujian Agriculture and Forestry UniversityFuzhou 350002China Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops Minjiang UniversityFuzhou 350108China Fujian Key Laboratory for Monitoring and Integrated Management of Crop Pests Fuzhou 350003China

The conserved DNA damage repair complex,MMS21-SMC5/6(Methyl methane sulfonate 21-Structural maintenance of chromosomes 5/6),has been extensively studied in yeast,animals,and ***,its role in phytopathogenic fungi,particularly in the highly destructive rice blast fungus Magnaporthe oryzae,remains *** this study,we functionally characterized the homologues of this complex,MoMMS21 and MoSMC5,in *** first demonstrated the importance of DNA damage repair in *** by showing that the DNA damage inducer phleomycin inhibited vegetative growth,infection-related development and pathogenicity in this ***,we discovered that MoMMS21 and MoSMC5 interacted in the nuclei,suggesting that they also function as a complex in *** deletion experiments revealed that both MoMMS21 and MoSMC5 are required for infection-related development and pathogenicity in ***,while only MoMMS21 deletion affected growth and sensitivity to phleomycin,indicating its specific involvement in DNA damage ***,our results provide insights into the roles of MoMMS21 and MoSMC5 in ***,highlighting their functions beyond DNA damage repair.

关键词： Magnaporthe oryzae MMS21 SMC5 DNA damage repair pathogenicity

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The processed C-terminus of AvrRps4 effector suppresses plant immunity via targeting multiple WRKYs

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Journal of Integrative plant Biology 2024年第8期66卷 1769-1787页

作者： Quang-Minh Nguyen Arya Bagus Boedi Iswanto Hobin Kang Jiyun Moon Kieu Anh Thi Phan Geon Hui Son Mi Chung Suh Eui-Hwan Chung Walter Gassmann Sang Hee Kim division of Applied Life Science(BK21 Four Program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 52828Korea Department of Life Science Sogang UniversitySeoul 04107Korea Department of plant Biotechnology Korea UniversitySeoul 02841Korea division of plant Science and Technology Christopher S.Bond Life Sciences Center and Interdisciplinary Plant GroupUniversity of MissouriColumbiaMissouri 65211USA division of Life Science and Research Institute of Molecular Alchemy Gyeongsang National UniversityJinju 52828Korea

Pathogens generate and secrete effector proteins to the host plant cells during pathogenesis to promote virulence and *** the plant carries resistance(R)proteins that recognize pathogen effectors,effector-triggered immunity(ETI)is activated,resulting in a robust immune response and hypersensitive response(HR).The bipartite effector AvrRps4 from Pseudomonas syringae *** has been well studied in terms of avirulence *** planta,AvrRps4 is processed into two *** Cterminal fragment of AvrRps4(AvrRps4^(C))induces HR in turnip and is recognized by the paired resistance proteins AtRRS1/AtRPS4 in ***,we show that AvrRps4^(C)targets a group of Arabidopsis WRKY,including WRKY46,WRKY53,WRKY54,and WRKY70,to induce its virulence ***,AvrRps4^(C)suppresses the general binding and transcriptional activities of immune-positive regulator WRKY54 and WRKY54-mediated ***4^(C)interferes with WRKY54's binding activity to target gene SARD1 in vitro,suggesting WRKY54 is sequestered from the SARD1 promoter by AvrRps4^(C).Through the interaction of Avr Rps4^(C)with four WRKYs,AvrRps4 enhances the formation of homo-/heterotypic complexes of four WRKYs and sequesters them in the cytoplasm,thus inhibiting their function in plant ***,our results provide a detailed virulence mechanism of AvrRps4 through its C-terminus.

关键词： AvrRps4 bacterial effector effector-triggered immunity immune response suppression transcription factor WRKY

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Competitive interactions between invasive fall armyworm and Asian corn borer at intraspecific and interspecific level on the same feeding guild

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Insect Science 2024年第4期31卷 1313-1325页

作者： Jingfei Guo Jianqin Shi Hailiang Han Ivan Rwomushana Abid Ali Yeeyee Myint Zhenying Wang State Key Laboratory for Biology of plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina Zhejiang Dongyang Maize Research Institute DongyangZhejiangChina CAB International(CABI) NairobiKenya Department of Entomology University of AgricultureFaisalabadPunjabPakistan plant Protection division Department of AgricultureMinistry of AgricultureLivestock and IrrigationYangonMyanmar

Interspecific competition is an important factor in the population dynamics and geographical distribution of insect *** armyworm(FAW),Spodoptera frugiperda,an invasive species,and the Asian corn borer(ACB),Ostrinia furnacalis,a native pest species are major pests on maize in China,posing a threat to maize yield and grain quality.A series of laboratory,greenhouse,and field experiments were conducted to elucidate the competitive interactions between FAW and *** the laboratory experiments,FAW exhibited aggressive behaviors more frequently when compared with ACB,while the latter species exhibited defense behaviors more *** intraspecific competition was recorded in the FAW conspecific rather than in ACB,particularly in the 6th larval *** had a higher interspecific competitive advantage through intraguild predation over ACB,resulting in partial or complete displacement ACB when initially the ratio of the 2 species was 1:*** interspecific competition also had significantly influenced on the population parameters,defensive enzymes,and nutrient of these 2 *** interaction proved that the response of superoxide,catalase,and soluble protein in FAW were significantly increased,whereas the total sugar content in both species was substantially *** rate,and the plant damage that co-infested by both species varied significantly among the sequential combinations under greenhouse and field *** consistently exhibited stronger intraspecific aggression than ACB under laboratory and field conditions when co-existing on the same feeding *** findings contribute to efforts toward the improvement of integrated pest management programs for FAW,in decision making for invasive and native pests’management strategies to reduce the high risks of FAW and ACB outbreaks.

关键词： Asian corn borer defensive enzyme fall armyworm interspecific competition intraspecific competition survival rate

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Modularly assembled multiplex prime editors for simultaneous editing of agronomically important genes in rice

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plant Communications 2024年第2期5卷 67-78页

作者： Ajay Gupta Bo Liu Saad Raza Qi-Jun Chen Bing Yang division of plant Science and Technology Bond Life Sciences CenterUniversity of MissouriColumbiaMO 65211USA State Key Laboratory of plant Physiology and Biochemistry College of Biological SciencesChina Agricultural UniversityBeijing 100193China Center for Crop Functional Genomics and Molecular Breeding China Agricultural UniversityBeijing 100193China Donald Danforth plant Science Center St.LouisMO 63132USA

Prime editing(PE)technology enables precise alterations in the genetic code of a genome of *** offers great potential for identifying major agronomically important genes in plants and editing them into superior variants,ideally targeting multiple loci simultaneously to realize the collective effects of the ***,we report the development of a modular assembly-based multiplex PE system in rice and demon-strate its efficacy in editing up to four genes in a single transformation *** duplex PE(DPE)system achieved a co-editing efficiency of 46.1%in the T0 generation,converting TFIIAg5 to xa5 and xa23 to *** resulting double-mutant lines exhibited robust broad-spectrum resistance against multiple Xanthomonas oryzae pathovar oryzae(Xoo)strains in the T1 *** addition,we success-fully edited OsEPSPS1 to an herbicide-tolerant variant and OsSWEET11a to a Xoo-resistant allele,achieving a co-editing rate of 57.14%.Furthermore,with the quadruple PE(QPE)system,we edited four genes—two for herbicide tolerance(OsEPSPS1 and OsALS1)and two for Xoo resistance(TFIIAg5 and OsSWEET11a)—using one construct,with a co-editing efficiency of 43.5%for all four genes in the T0 *** performed multiplex PE usingfive more constructs,including two for triplex PE(TPE)and three for QPE,each targeting a different set of *** editing rates were dependent on the activity of pegRNA and/or *** instance,optimization of ngRNA increased the PE rates for one of the targets(OsSPL13)from 0%to 30%but did not improve editing at another target(OsGS2).Overall,our modular assembly-based system yielded high PE rates and streamlined the cloning of PE reagents,making it feasible for more labs to utilize PE for their editing *** have significant implications for advancing gene editing techniques in plants and may pave the way for future agricultural applications.

关键词： prime editing rice bacterial blight herbicide tolerance multiplex genome editing

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Ripening and rot:How ripening processes influence disease susceptibility in fleshy fruits

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Journal of Integrative plant Biology 2024年第9期66卷 1831-1863页

作者： Shan Li Yu Zhao Pan Wu Donald Grierson Lei Gao State Key Laboratory of plant Diversity and Specialty Crops Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074China University of Chinese Academy of Sciences Beijing 100049China plant and Crop Sciences division School of BiosciencesUniversity of NottinghamSutton Bonington CampusLoughboroughLE125RDUK Hubei Hongshan Laboratory Wuhan 430070China

Fleshy fruits become more susceptible to pathogen infection when they ripen;for example,changes in cell wall properties related to softening make it easier for pathogens to infect *** need for high-quality fruit has driven extensive research on improving pathogen resistance in important fruit crops such as tomato(Solanum lycopersicum).In this review,we summarize current progress in understanding how changes in fruit properties during ripening affect infection by *** changes affect physical barriers that limit pathogen entry,such as the fruit epidermis and its cuticle,along with other defenses that limit pathogen growth,such as preformed and induced defense *** plant immune system also protects ripening fruit by recognizing pathogens and initiating defense responses involving reactive oxygen species production,mitogen-activated protein kinase signaling cascades,and jasmonic acid,salicylic acid,ethylene,and abscisic acid *** phytohormones regulate an intricate web of transcription factors(TFs)that activate resistance mechanisms,including the expression of pathogenesis-related *** tomato,ripening regulators,such as RIPENING INHIBITOR and NON_RIPENING,not only regulate ripening but also influence fruit defenses against ***,members of the ETHYLENE RESPONSE FACTOR(ERF)family play pivotal and distinct roles in ripening and defense,with different members being regulated by different *** also discuss the interaction of ripening-related and defense-related TFs with the Mediator transcription *** the ripening processes in climacteric and non-climacteric fruits share many similarities,these processes have broad applications across fruiting *** research on the individual contributions of ERFs and other TFs will inform efforts to diminish disease susceptibility in ripe fruit,satisfy the growing demand for high-quality fruit and decrease food waste and related economic losses.

关键词： fleshy fruit pathogen phytohormones ripening transcription factors

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The arms race between Magnaporthe oryzae and rice: Diversity and interaction of Avr and R genes

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Journal of Integrative Agriculture 2017年第12期16卷 2746-2760页

作者： WANG Bao-hua Daniel J.Ebbole WANG Zong-hua College of plant Protection/Fujian University Key Laboratory for plant-microbe interaction Fujian Agriculture and Forestry University Department of plant Pathology and Microbiology Texas A&M UniversityCollege Station Ocean Institute Minjiang University

Rice blast disease, caused by Magnaporthe oryzae, threatens global food security. The rice blast pathosystem is a longstanding model system for understanding plant-microbe interactions. In order to elucidate the coevolution of the host and pathogen, and provide the appropriate methods for preventing or controlling rice blast disease, researchers have focused on the evolution of virulence factors and resistance genes. Thus far, more than 30 rice blast resistance（R） genes and 12 avirulence（Avr） genes have been cloned. This review summarizes the cloned rice blast R genes, cloned Avr genes of M. oryzae and the interaction between them. This discussion also considers some of the major unanswered questions concerning this pathosystem and the opportunities for future investigations.

关键词： rice Maganporthe oryzae resistance gene avirulence gene co-evolution genetic diversity

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SIZ1-mediated SUMOylation of CPSF100 promotes plant thermomorphogenesis by controlling alternative polyadenylation

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Molecular plant 2024年第9期17卷 1392-1406页

作者： Zhibo Yu Jun Wang Cheng Zhang Qiuna Zhan Leqian Shi Bing Song Danlu Han Jieming Jiang Junwen Huang Xiaolin Ou Zhonghui Zhang Jianbin Lai Qingshun Quinn Li Chengwei Yang Guangdong Provincial Key Laboratory of Biotechnology for plant Development School of Life ScienceSouth China Normal UniversityGuangzhou 510631China Key Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems Cllege of the Environment and EcologyXiamen UniversityXiamenFujan 361102China Biomedical Science division College of Dental MedicineWestern University of Health SciencesPomonaCA 91766USA

Under warm temperatures,plants adjust their morphologies for environmental adaption via precise gene expression ***,the function and regulation of alternative polyadenylation(APA),an important fine-tuning of gene expression,remains unknown in plant *** this study,we found that SUMOylation,a critical post-translational modification,is induced by a long-term treat-ment at warm temperatures via a SUMO ligase SIZ1 in *** of SIZ1 altered the global usage of polyadenylation signals and affected the APA dynamic of thermomorphogenesis-related ***100,a key subunit of the CPSF complex for polyadenylation regulation,is SUMOylated by ***,we demonstrated that SUMOylation is essential for the function of CPSF1oo in genome-wide polyadenylation site choice during *** analyses revealed that the SUMO conjugation on CPSF100 attenuates its interaction with two isoforms of its partner CPSF30,increasing the nuclear accumulation of CPsF1oo for polyadenylation *** summary,our study uncovers a regulatory mechanism of APA via SiZ1-mediated SUMOylation in plant thermomorpho-genesis.

关键词： alternative polyadenylation CPSF100 SiZ1 SUMOylation thermomorphogenesis

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Natural Variation in Tomato Reveals Differences in the Recognition of AvrPto and AvrPtoB Effectors from Pseudomonas syringae

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Molecular plant 2016年第5期9卷 639-649页

作者： Christine M. Kraus Kathy R. Munkvold Gregory B. Martin Boyce Thompson Institute for plant Research Ithaca NY 14853 USA plant Pathology and plant-microbe Biology Section School of Integrative Plant Science Cornell University Ithaca NY 14853 USA Beckman Coulter Indianapolis IN 46268 USA

The Pto protein kinase from Solanum pimpinellifolium interacts with Pseudomonas syringae effectors AvrPto or AvrPtoB to activate effector-triggered immunity. The previously solved crystal structures of the AvrPto-Pto and AvrPtoB-Pto complexes revealed that Pro binds each effector through both a shared and a unique interface. Hera we use natural variation in wild species of tomato to further investigate Pto recognition of these two effectors. One species, Solanum chmielewskU, was found to have many accessions that recognize only AvrPtoB. The Pto ortholog from one of these accessions was responsible for recognition of AvrPtoB and it differed from Solanum pimpinellifolium Pto by only 14 amino acids, including two in the AvrPto-specific interface, glutamate-49/glycine-51. Converting these two residues to those in Pro （histidine-49/valine-51） did not restore recognition of AvrPto. Subsequent experiments revealed that a single substitution of a histidine-to-aspartate at position 193 in Pto, which is not near the AvrPto- specific interface, was sufficient for conferring recognRion of AvrPto in plant cells. The reciprocal substi- tution of aspartate-to-histidine-193 in Pto abolished AvrPto recognition, confirming the importance of this residue. Our results reveal new aspects about effector recognition by Pto and demonstrate the value of using natural variation to understand the interaction between resistance proteins and pathogen effectors.

关键词： Effector-triggered immunity natural variation plant immunity Pseudomonas syringae Pto tomato

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Peroxisome Dynamics Determines Host-derived ROS Accumulation and Infectious Growth of the Rice Blast Fungus

Peroxisome Dynamics Determines Host-derived ROS Accumulation...

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中国植物病理学会2024年学术年会

作者：张俊 LI Huimin GU Wangliu ZHANG Kexin LIU Xinyu LIU Muxing YANG Leiyun LI Gang ZHANG Zhengguang 张海峰 Department of plant Pathology College of Plant ProtectionNanjing Agricultural Universityand Key Laboratory of Integrated Management of Crop Diseases and PestsMinistry of Education The Key Laboratory of plant Immunity Nanjing Agricultural University

During the early stages of host-pathogen interaction,the production of reactive oxygen species(ROS) in host cells is a critical strategy to halt the spread of *** have to minimize the deleterious effects of host-generated ROS for successful ***,the underlying mechanism remains largely ***,we report that a peroxisomal 3-ketoacyl-CoA thiolase of rice blast fungus ***,MoKat2,functions in host ROS homeostasis likely through regulating fungal peroxisome morphology during *** peroxisome elongates in response to ROS stress and this is attributed to the function of peroxisome localized ***2 forms homodimer in vivo while the homodimer is dissociated into monomer in response to host-derived *** MoKat2 monomer binds to peroxisome membranes through its amphipathic helices to control peroxisome elongation,resulting in host ROS depletion and subsequent *** invasion in rice *** findings shed light on the interplay between pathogenic peroxisome dynamics and host ROS accumulation,expanding the crucial role of organelle-mediated infection in plant-microbe interactions.

关键词： M. oryzae-rice interaction peroxisome dynamics host-derived ROS MoKat2 infectious growth

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Impact of Elevated CO<sub>2</sub>on Wheat Growth and Yield under Free Air CO<sub>2</sub>Enrichment

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American Journal of Climate Change 2017年第4期6卷 573-596页

作者： Vivek Pandey Marisha Sharma Farah Deeba Vivek K. Maurya Sunil K. Gupta Satyendra P. Singh Aradhana Mishra Chandra Shekhar Nautiyal plant Ecology & Environmental Sciences CSIR-National Botanical Research Institute Lucknow India division of plant microbe interaction CSIR-National Botanical Research Institute Lucknow India

Impact of elevated CO2 (free air CO2 enrichment) was studied on wheat (Triticum aestivum L. var Kundan) growth, yield and proteome. Elevated CO2 significantly impacted both underground (+24%) and aboveground (+15%) biomass. Grain weight/plant and harvest index were increased by 35% and 11.4%, respectively under high CO2. On the other hand, seed protein content was decreased by 19% under CO2 enrichment while seed starch and soluble sugar contents were increased by 8% and 23%, respectively. Wheat leaf proteomics revealed that 50 proteins were showing differential expression. Twenty proteins were more abundant while 30 were less abundant. Thirty two proteins were identified by MALDI TOF TOF. More abundant proteins were related to defense, photosynthesis, energy metabolism etc. While less abundant proteins were related to glycolysis and gluconeogenesis. Wheat grain proteomics revealed that out of 49 differentially abundant proteins, 24 were more in abundance and 25 were less in abundance in wheat grains under eCO2 condition. Thirty three proteins were identified and functionally characterized. They were found to be involved mainly in carbon metabolism, storage, defence and proteolysis. Gluten proteins are the major component of wheat storage proteins. Our results showed that both high and low molecular weight glutenins were more in eCO2 wheat seeds while there was no change in gliadin evels. This might alter wheat dough strength. Concentration of grain Cr and As was increased at eCO2 while that of Fe, Cu, Zn and Se were found to be decreased. Dynamics of carbon utilization and metabolic abilities of soil microbes under eCO2 were significantly altered. Our study showed that altered wheat seed composition is cause for concern vis-à-vis nutrition and health and for industries which may have implications for agriculturally dominated country like India.

关键词： Carbon Dioxide FACE Wheat Proteomics Grain Yield Soil microbes

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