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

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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Decoding the fruit microbiome:A climate smart strategy to manage postharvest decays

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Horticultural plant Journal 2024年第5期10卷 1061-1072页

作者： Manori Kuruppu Kong Lih Ling Phebe Ding Khairulmazmi Ahmad Asgar Ali Yasmeen Siddiqui Laboratory of Sustainable agronomy and Crop Protection Institute of Plantation StudiesUniversiti Putra MalaysiaSerdang 43400Malaysia Department of plant Protection Faculty of AgricultureUniversiti Putra MalaysiaSerdang 43400Malaysia Centre of Excellence for post-harvest Biotechnology(CEFB) School of BiosciencesUniversity of Nottingham MalaysiaJalan Broga43500 SemenyihSelangorMalaysia Department of Biological sciences College of ScienceKing Faisal UniversityAl Ahsa31982Saudi Arabia

There is an urgent necessity to shift our diets toward those rich in fruits and vegetables and at reduce postharvest losses of *** 20%-50%of fruits and vegetables are lost due to poor postharvest handling and pathogen infections in developing countries while it was estimated as 5%-35%in developed countries. Fresh fruits have evolved with a plethora of microorganisms having important roles in maintaining fruit health. However, little information is available on the dynamics, structure, and functional capacities of underpinning fruit microbiomes. The present review discussed environmental conditions favoring fruit-harbored antagonists and their different modes of action for suppressing postharvest pathogens in fruits. It also provides information on omics technologies such as next-generation sequencing (NGS),metaproteomics, metatranscriptomic, and metabolomics studies to characterize fruit microbiomes. With the advent of NGS and meta-omics technologies, microbiome research could bring remarkable development and understanding in succeeding biological treatments. In addition, they may provide us with a fundamental understanding of microclimate requirements for fruit microbiome establishment and microbiome shifts during post-harvest storage, which would be advantageous in developing composite biocontrol treatments for post-harvest decay management.

关键词： Biological control Food loss Fruit microbiome Meta-omics Microclimate postharvest decay

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Exploring the genetic basis of pre-harvest sprouting in rice through a genome-wide association study-based haplotype analysis

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Journal of Integrative Agriculture 2024年第8期23卷 2525-2540页

作者： Myeong-Hyeon Min Aye Aye Khaing Sang-Ho Chu Bhagwat Nawade Yong-Jin Park Department of plant Resources College of Industrial SciencesKongju National UniversityYesan 32439Republic of Korea Department of agronomy Yezin Agricultural UniversityNay Pyi Taw 15013Myanmar

Pre-harvest sprouting(PHS)poses a significant global challenge to cereal production,impacting both yield and *** this study,we employed genome-wide association studies(GWAS)on diverse rice accessions to identify novel PHS-associated *** assessment of 127 cultivated accessions for panicle germination(PHS)and detached grain germination(germination rate of detached grains at the 14th day(D14))revealed considerable phenotypic variation among rice *** analysis identified 91 significant signals at–log10(P-value)>5,including 15SNPs for PHS and 76 SNPs for D14.A subsequent linkage disequilibrium(LD)block-based GWAS analysis detected 227 significant SNPs for both traits,consisting of 18 nonsynonymous substitutions located on the coding regions of nine *** haplotype analysis identified 32 haplotypes,with 10 specific to cultivated accessions,19 specific to the wild type,and three shared between them.A phenotypic assessment of major haplotypes revealed significant differences between resistant(Hap1 and Hap2)and susceptible haplotypes(Hap5,Hap27,and Hap28),distinguished by a G/A SNP within a novel gene,*** identified haplotypes offer promising prospects for haplotypebased breeding aimed at enhancing PHS resistance in rice.

关键词： rice PHS dormancy germination GWAS haplotype abiotic stress

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Improving dryland maize productivity and water efficiency with heterotrophic ammonia-oxidizing bacteria via nitrification and cytokinin activity

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The Crop Journal 2024年第3期12卷 880-887页

作者： Xiaoling Wang Jiawei Cao Runhong Sun Wei Liu Lin Qi Peng Song Shenjiao Yang College of agronomy Henan University of Science and TechnologyLuoyang 471003HenanChina Institute of plant Protection Research Henan Academy of Agricultural SciencesZhengzhou 450099HenanChina Farmland Irrigation Research Institute Chinese Academy of Agricultural SciencesXinxiang 453000HenanChina

A two-year field experiment conducted under dryland conditions in semi-humid and drought-prone regions of China aimed to assess the effect of ammonia-oxidizing bacterial on maize water use efficiency and yield.A heterotrophic ammonia-oxidizing bacteria(HAOB)strain S2_8_1 was *** treatments were applied:(1)no irrigation+HAOB strain(DI),(2)no irrigation+blank culture medium(DM),(3)no irrigation control(DCK),(4)irrigation+HAOB(WI),(5)irrigation+blank culture medium(WM),and(6)irrigation control(WCK).Results revealed that HAOB treatment increased maize growth,yield,and water use efficiency over controls,regardless of whether the year was wet or *** improvement was attributed to the accelerated nitrification in the rhizosphere soil due to HAOB inoculation,which subsequently led to increased levels of leaf ***,these findings suggest that HAOB inoculation holds promise as a strategy to boost water use efficiency and maize productivity in dryland agriculture.

关键词： Heterotrophic ammonia-oxidizing bacteria Rhizosphere soil nitrification Cytokinin Maize Dryland agriculture

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SsdchA is a novel secretory cellobiohydrolase driving pathogenicity in Sclerotinia sclerotiorum

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The Crop Journal 2024年第2期12卷 493-502页

作者： Yangui Chen Yijuan Ding Siqi Zhao Nan Yang Zhaohui Wu Ping Zhang Hongmei Liao Mengquan Dong Yang Yu Huafang Wan Wei Qian Integrative science Center of Germplasm Creation in Western China(Chongqing)science City College of Agronomy and BiotechnologySouthwest UniversityChongqing 400715China Academy of Agricultural sciences Southwest UniversityChongqing 400715China Engineering Research Center of South Upland Agriculture Ministry of EducationChongqing 400715China College of plant Protection Southwest UniversityChongqing 400715China

The necrotrophic fungus, Sclerotinia sclerotiorum, employs an array of cell wall-degrading enzymes(CWDEs), including cellulase, to dismantle host cell walls. However, the molecular mechanisms through which S. sclerotiorum degrades cellulose remain elusive. Here, we unveil a novel secretory cellobiohydrolase, SsdchA, characterized by a signal peptide and a Glyco_hydro_7(GH7) domain. SsdchA exhibits a robust expression of during early infection stages. Interestingly, colony morphology and growth rates remain unaffected across the wild-type, SsdchA deletion strains and SsdchA overexpression strains on potato dextrose agar(PDA) medium. Nevertheless, the pathogenicity and cellobiohydrolase activity decreased in the SsdchA deletion strains, but enhanced in the SsdchA overexpression strains. Moreover,the heterologous expression of SsdchA in Arabidopsis thaliana leads to reduced cellulose content and heightened susceptibility to S. sclerotiorum. Collectively, our data underscore the pivotal role of the novel cellobiohydrolase SsdchA in the pathogenicity of S. sclerotiorum.

关键词： Cellobiohydrolase Cellulose Pathogenicity Sclerotinia sclerotiorum Secretory protein SsdchA

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Proxitome profiling reveals a conserved SGT1- NSL1 signaling module that activates NLRmediated immunity

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Molecular plant 2024年第9期17卷 1369-1391页

作者： Dingliang Zhang Xinxin Yang Zhiyan Wen Zhen Li Xinyu Zhang Chenchen Zhong Jiajie She Qianshen Zhang He Zhang Wenli Li Xiaoyun Zhao Mingliang Xu Zhen Su Dawei Li Savithramma P.Dinesh-Kumar Yongliang Zhang State Key Laboratory of plant Environmental Resilience College of Biological SciencesChina Agricultural UniversityBejing 100193China Department of plant Biology and The Genome Center College of Biological SciencesUniversity of CaliforniaDavisDavisCA 95616USA State Key Laboratory of plant Environmental Resilience College of Agronomy and BiotechnologyChina Agricultural UniversityBejing 100193China

Suppressor of G2 allele of skp1(SGT1)is a highly conserved eukaryotic protein that plays a vital role in growth,development,and immunity in both animals and *** some SGT1 interactors have been identified,the molecular regulatory network of SGT1 remains ***1 serves as a co-chaperone to stabilize protein complexes such as the nucleotide-binding leucine-rich repeat(NLR)class of immune receptors,thereby positively regulating plant ***1 has also been found to be asso-ciated with the SKP1-Cullin-F-box(SCF)E3 ubiquitin ligase ***,whether SGT1 targets im-mune repressors to coordinate plant immune activation remains *** this study,we constructed a toolbox for TurbolD-and split-TurbolD-based proximity labeling(PL)assays in Nicotiana benthamiana and used the PL toolbox to explore the SGT1 interactome during pre-and post-immune *** comprehensive SGT1 interactome network we identified highlights a dynamic shift from proteins associ-ated with plant development to those linked with plant immune *** found that SGT1 interacts with Necrotic Spotted Lesion1(NSL1),which negatively regulates salicylic acid-mediated defenseby inter-fering with the nucleocytoplasmic trafficking of non-expressor of pathogenesis-related genes 1(NPR1)during N NLR-mediated response to tobacco mosaic ***1 promotes the SCF-dependent degrada-tion of NSL1 to facilitate immune activation,while salicylate-induced protein kinase-mediated phosphory-lation of SGT1further potentiates this *** NNLR,NSL1also functions in several other NLR-mediated ***,our study unveils the regulatory landscape of SGT1 and reveals a novel SGT1-NSL1 signaling module that orchestrates plant innate immunity.

关键词： suppressor of G2 allele of skp1 SGT1 proximity labeling N NLR immune receptor Necrotic Spotted Lesion 1 NSL1 salicylic acid ubiquitination

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Simulated rainfall in Brazil:An alternative for assesment of soil surface processes and an opportunity for technological development

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International Soil and Water Conservation Research 2024年第1期12卷 29-42页

作者： Camila Calazans da Silva Luz Wilk Sampaio de Almeida Adilson Pacheco de Souza Nivaldo Schultz Jamil Alexandre Ayach Anache Daniel Fonseca de Carvalho postgraduate program in agronomy-Soil sciences Federal Rural University of Rio de JaneiroSeropédicaRJBrazil agronomy Department Federal Institute of EducationScience and Technology of RondôniaAriquemesROBrazil Federal University of Mato Grosso SinopMTBrazil Federal Rural University of Rio de Janeiro SeropédicaRJBrazil Federal University of Mato Grosso do Sul Campo GrandeMSBrazil

Rainfall simulators(RS)have been used,above all,to evaluate hydrological processes related to soil water infiltration,surface runoff and soil *** allow repeatability of rain application with different precipitation intensities in field and/or laboratory conditions and should produce events with physical characteristics similar to natural *** this manuscript,we carried out a bibliometric and scientometric analysis of studies with simulated rainfall in Brazil to assess the temporal evolution of publications,the main topics addressed and the degree of technological development of the *** searched for the terms“rainfall simulator”OR“simulated rainfall”AND“Brazil”in the Scopus,Web of science,SciELO and Google Scholar *** found 143 articles published in the last 37 years(1985-2022).Our findings indicate that the main research areas covered in papers are soil erosion(57.34%),soil water infiltration(24.47%),nutrient losses(9.8%)and RS development and calibration/assessment(8.39%).In recent years,the number of published papers in international high-impact factor journals has *** of the papers(49.65%)refer to studies carried out by institutions located in the south and southeast regions of ***,there is a large gap of studies on simulated rainfall in other regions of Brazil,where important biomes such as the Cerrado,Amazon,Caatinga,and their transitions are *** study informs research priorities on soil erosion under simulated rainfall and provides a bibliographic database that can assist in more detailed future analyses.

关键词： Rainfall simulator Soil and water losses Soil water infiltration Bibliometrics Scientific review

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Legume green manure can intensify the function of chemical nitrogen fertilizer substitution via increasing nitrogen supply and uptake of wheat

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The Crop Journal 2024年第4期12卷 1222-1232页

作者： Jingui Wei Zhilong Fan Falong Hu Shoufa Mao Fang Yin Qiming Wang Qiang Chai Wen Yin State Key Laboratory of Arid Land Crop science Lanzhou 730070GansuChina College of agronomy Gansu Agricultural UniversityLanzhou 730070GansuChina

Achieving the green development of agriculture requires the reduction of chemical nitrogen(N)fertilizer *** studies have confirmed that returning green manure to the field is an effective measure to improve crop yields while substituting partial chemical N ***,it remains unclear how to further intensify the substituting function of green manure and elucidate its underlying agronomic *** a split-plot field experiment in spring wheat,different green manures returned to the field under reduced chemical N supply was established in an oasis area since 2018,in order to investigate the effect of green manure and reduced N on grain yield,N uptake,N use efficiency(NUE),N nutrition index,soil organic matter,and soil N of wheat in *** results showed that mixed sown common vetch and hairy vetch can substitute 40%of chemical N fertilizer without reducing grain yield or N ***,mixed sown common vetch and hairy vetch under reduced N by 20%showed the highest N agronomy efficiency and recovery efficiency,which were 92.0%and 46.0%higher than fallow after wheat harvest and conventional N application rate,*** increase in NUE of wheat was mainly attributed to mixed sown common vetch and hairy vetch,which increased N transportation quantity and transportation rate at pre-anthesis,enhanced N harvest index,optimized N nutrition index,and increased activities of nitrate reductase and glutamine synthetase of leaf,***,mixed sown common vetch and hairy vetch under reduced N by 20%improved soil organic matter and N ***,mixed sown common vetch and hairy vetch can substitute 40%of chemical N fertilizer while maintaining grain yield and N accumulation,and it combined with reduced chemical N by 20%or 40%improved NUE of wheat via enhancing N supply and uptake.

关键词： Legume green manure Reduced N input Wheat N uptake and supply Agronomic mechanism

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Molecular mechanisms underlying the negative effects of transient heatwaves on crop fertility

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plant Communications 2024年第9期5卷 101-115页

作者： Qian Yao Ping Li Xin Wang Shuhua Liao Pu Wang Shoubing Huang College of agronomy and Biotechnology China Agricultural UniversityBeijing 100193China

Transient heatwaves occurring more frequently as the climate warms,yet their impacts on crop yield are severely underestimated and even *** lasting only a few days or even hours during sensitive stages,such as microgametogenesis and flowering,can significantly reduce crop yield by disrupting plant *** advances in multi-omics and GWAS analysis have shed light on the specific organs(e.g.,pollen,lodicule,style),key metabolic pathways(sugar and reactive oxygen species metabolism,Ca2+homeostasis),and essential genes that are involved in crop responses to transient heatwaves during sensitive *** review therefore places particular emphasis on heat-sensitive stages,with pollen development,floret opening,pollination,and fertilization as the central narrative *** multifaceted effects of transient heatwaves and their molecular basis are systematically reviewed,with a focus on key structures such as the lodicule and tapetum.A number of heat-tolerance genes associated with these processes have been identified in major crops like maize and *** mechanisms and key heat-tolerance genes shared among different stages may facilitate the more precise improvement of heat-tolerant crops.

关键词： heat stress floret fertility pollen pollen tube growth seed set molecular mechanism

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α1-COP modulates plasmodesmata function through sphingolipid enzyme regulation

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Journal of Integrative plant Biology 2024年第8期66卷 1639-1657页

作者： Arya Bagus Boedi Iswanto Minh Huy Vu Jong Cheol Shon Ritesh Kumar Shuwei Wu Hobin Kang Da-Ran Kim Geon Hui Son Woe Yoen Kim Youn-Sig Kwak Kwang Hyeon Liu Sang Hee Kim Jae-Yean Kim Division of Applied Life science(BK21 FOUR program) Plant Molecular Biology and Biotechnology Research CenterGyeongsang National UniversityJinju 52828Korea College of Pharmacy and Research Institute of Pharmaceutical sciences Kyungpook National UniversityDaegu 702-701Korea Departement of plant Medicine Gyeongsang National UniversityJinju 52828Korea Division of Life science Gyeongsang National UniversityJinju 52828Korea

Callose,aβ-1,3-glucan plant cell wall polymer,regulates symplasmic channel size at plasmodesmata(PD)and plays a crucial role in a variety of plant ***,elucidating the molecular mechanism of PD callose homeostasis is *** screened and identified an Arabidopsis mutant plant with excessive callose deposition at PD and found that the mutated gene wasα1-COP,a member of the coat protein I(COPI)coatomer *** report that loss of function ofα1-COP elevates the callose accumulation at PD by affecting subcellular protein localization of callose degradation enzyme Pd *** process is linked to the functions of ERH1,an inositol phosphoryl ceramide synthase,and glucosylceramide synthase through physical interactions with theα1-COP ***,the loss of function ofα1-COP alters the subcellular localization of ERH1 and GCS proteins,resulting in a reduction of Glc Cers and Glc HCers molecules,which are key sphingolipid(SL)species for lipid raft *** findings suggest thatα1-COP protein,together with SL modifiers controlling lipid raft compositions,regulates the subcellular localization of GPI-anchored PDBG2 proteins,and hence the callose turnover at PD and symplasmic movement of *** findings provide the first key clue to link the COPI-mediated intracellular trafficking pathway to the callose-mediated intercellular signaling pathway through PD.

关键词： callose coatomer proteins membrane-bound vesicle plasmodesmata sphingolipid enzymes

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