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Characterization of the chemical fungicides-responsive and bacterial pathogen-preventing Bacillus licheniformis in rice spikelet

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Food Quality and Safety 2023年第2期7卷 256-266页

作者： Chengfang Zhan Mengchen Wu Hongda Fang Xiaoyu Liu Jiuyue Pan Xiaoyan Fan Mengcen Wang haruna matsumoto State Key Laboratory of Rice Biology&Ministry of Agricultural and Rural Affairs Laboratory of Molecular Biology of Crop Pathogens and Insects Zhejiang UniversityHangzhouChina Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province Institute of Pesticide and Environmental ToxicologyCollege of Agriculture and BiotechnologyZhejiang UniversityHangzhouChina Zhejiang Laboratory for Systems&Precision Medicine Zhejiang University Medical CenterHangzhouChina School of Medicine Zhejiang UniversityHangzhouChina College of Plant Protection Hunan Agricultural UniversityHunanChina Plant Genetics TUM School of Life SciencesTechnical University of MunichFreisingGermany Global Education Program for AgriScience Frontiers Graduate School of AgricultureHokkaido UniversitySapporoJapan

Seed-borne bacterial pathogens cause severe yield loss and biotoxin contamination in rice,leading to increasing concern on the global food supply and environmental *** native microbes play an important role in defending against diseases,but their actions are often influ-enced by the chemical fungicides applied in the ***,Bacillus licheniformis mmj was isolated from rice spikelet,which uniquely showed not only fungicide-responsiveness but also broad-spectrum antimicrobial activity against major rice bacterial pathogens including Xanthomonas oryzae ***,Burkholderia plantari and Burkholderia *** understand the hallmark underlying the environmental adaptation and anti-microbial activity of *** mmj,the genome sequence was determined by SMRT and subjected to bioinformatics *** sequence analysis enabled the identification of a set of antimicrobial-resistance and antibacterial activity genes together with an array of harsh environment-adaptive ***,*** mmj metabolites were analyzed with gas chromatography coupled to triple quadrupole mass spectrometry,and the volatile components that were linked with the antimicrobial activity were preliminarily ***,the present findings reveal the genomic and metabolic landscapes underlying fungicide-responsive ***,which offers a new opportunity to design harsh environment-adaptive biopesticides to cope with prevalent bacterial phytopathogens.

关键词： Bacillus licheniformis fungicide adaptation antimicrobial activity genomics metabolites rice production

Reprogramming of phytopathogen transcriptome by a non-bactericidal pesticide residue alleviates its virulence in rice

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Fundamental Research 2022年第2期2卷 198-207页

作者： haruna matsumoto Yuan Qian Xiaoyan Fan Sunlu Chen Yanxia Nie Kun Qiao Dandan Xiang Xinzhong Zhang Meng Li Bo Guo Peilin Shen Qiangwei Wang Yunlong Yu Tomislav Cemava Mengcen Wang State Key Laboratory of Rice Biology&Ministry of Agricultural and Rural Affairs Laboratory of Molecular Biology of Crop Pathogens and Insects Institute of Pesticide and Environmental ToxicologyZhejiang UniversityHangzhou 310058China Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang Province College of Agriculture and BiotechnologyZhejiang UniversityHangzhou 310058China Institute of Environmental Biotechnology Graz University of TechnologyPetersgasse 128010 GrazAustria Global Education Program for AgriScience Frontiers Graduate School of AgricultureHokkaido UniversitySapporo 0608589Japan State Key Laboratory of Crop Genetics and Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China Ecology and Environmental Sciences Center South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China Key laboratory of South Subtropical Fruit Biology and Genetic Resource Uilization(MOA) Instiute of Fruit Tree ResearchGuangdong Acadermy of Agricultural SciencesGuangzhou 510640China Tea Research Instiute Chinese Academy of Agriculural SciencesHangzhou 310008China Shanghai Intermnational Studies University Shanghai 200083China Xiaoshan Agricultural Comprehensive Development Zone&Management Committee Hangzhou 311200China

Bacteria equipped with virulence systems based on highly bioactive small molecules can circumvent their host's defense *** employing this strategy are currently threatening global rice *** the present study,variations in the virulence of the highly destructive Barkholderiaplantarii were observed in different rice-producing *** environment-linked variation was not attributable to any known host-related or external ***-occurrence analyses indicated a connection between reduced virulence and 5-Amino-l,3,4-thiadiazole-2-thiol(ATT),a non-bactericidal organic ***,which accumulates in rice plants during metabolization of specific agrochemicals,was found to reduce virulence factor secretion by *** up to 88.8%and inhibit pathogen virulence by hijacking an upstream signaling *** assessment of the newly discovered virulence inhibitor resulted in mechanistic insights into positive effects of ATT accumulation in plant *** of virulence alleviation were deciphered by integrating high-throughput data,gene knockout mutants,and molecular interaction ***,a histidine protein kinase in a two-component system that regulates virulence factor secretion,is likely the molecular target antagonized by *** findings provide novel insights into virulence modulation in an important plant-pathogen system that relies on the host's metabolic activity and subsequent signaling interference.

关键词： Phytopathogen Virulence factor Transcriptome reprogramming Agrochemical Pesticide Rice

水稻病原菌Burkholderia plantarii群体感应和群体淬灭研究进展

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农药学学报 2016年第3期18卷 273-281页

作者： matsumoto haruna 王蒙岑桂文君郭逸蓉朱国念浙江大学农药与毒理研究所杭州310058 北海道大学农学院

植物伯克霍尔德菌Burkholderia plantarii是引起水稻秧苗细菌性立枯病的重要病原菌之一,其侵染性、繁殖力及适应性均很强,严重威胁中国水稻生产。文章围绕***的发生、危害及致病机理,着重论述了细菌群体感应系统(quorum sensing,QS)的... 详细信息

植物伯克霍尔德菌Burkholderia plantarii是引起水稻秧苗细菌性立枯病的重要病原菌之一,其侵染性、繁殖力及适应性均很强,严重威胁中国水稻生产。文章围绕***的发生、危害及致病机理,着重论述了细菌群体感应系统(quorum sensing,QS)的生理功能及其在***致病力调控方面的最新研究进展,并进一步从根际微生物互作角度,综述了种间信号分子对病原菌群体淬灭(quorum quenching)的作用机制,同时结合种间信号分子的独特性,展望了其在新型微生物杀菌剂研发中的重要性和应用潜力。

关键词：植物伯克霍尔德菌群体感应种间信号分子群体淬灭研究进展

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五氟磺草胺在稻田中的消解动态及残留特性

农药学学报 2017年第1期19卷 61-67页

作者：李文卓钱圆 matsumoto haruna 杨斌王蒙岑朱国念浙江大学农药与环境毒理研究所杭州310029

建立了超高效液相色谱-质谱联用检测五氟磺草胺在水稻植株、稻田土壤、田水和糙米中残留的分析方法,结合田间试验研究了五氟磺草胺在稻田环境中的消解及残留特性,并对稻米中五氟磺草胺残留的膳食暴露进行了初步评估。结果表明:在0.005~0... 详细信息

建立了超高效液相色谱-质谱联用检测五氟磺草胺在水稻植株、稻田土壤、田水和糙米中残留的分析方法,结合田间试验研究了五氟磺草胺在稻田环境中的消解及残留特性,并对稻米中五氟磺草胺残留的膳食暴露进行了初步评估。结果表明:在0.005~0.5 mg/L范围内,五氟磺草胺的质量浓度与对应的峰面积间呈良好线性关系,检出限(LOD)为0.001~0.002 mg/kg,定量限(LOQ)为0.003~0.005 mg/kg。在0.005~0.5 mg/kg添加水平下,五氟磺草胺在水稻植株、稻田土壤、田水和糙米中的平均回收率在89%~106%之间,相对标准偏差在2.8%~8.5%之间。浙江、福建和黑龙江2年3地的田间试验表明:0.025%五氟磺草胺颗粒剂在水稻植株、稻田土壤和田水中的消解半衰期分别为1.5~3.3,3.0~4.7和1.6-3.0 d,说明该药剂在稻田环境中消解速率较快。以五氟磺草胺有效成分含量37.5和56.3 g/hm^2分别施药1次,于水稻成熟期采样检测,发现其在糙米中的残留量低于0.005 mg/kg,表明其膳食摄入风险很低,该研究结果可为五氟磺草胺风险评估提供一定参考。

关键词：五氟磺草胺稻田残留消解超高效液相色谱-质谱联用膳食风险评估

气相色谱-串联质谱检测蔬菜中氟吡菌酰胺及其代谢物残留

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农药学学报 2016年第6期18卷 759-764页

作者：李文卓钱圆 matsumoto haruna 刘晓玉秦丽王蒙岑朱国念浙江大学农药与环境毒理研究所杭州310058 杭州市余杭区农产品质量安全检验检测站杭州311100

采用气相色谱-串联质谱（GC-MS/MS）技术建立了同时检测7种类型蔬菜中氟吡菌酰胺及其代谢物残留的分析方法。样品采用乙腈提取,无水硫酸镁和氯化钠盐析后,经分散固相萃取（PSA）净化,GC-MS/MS检测。结果表明：在0.01、0.1和1 mg/kg 3个... 详细信息

采用气相色谱-串联质谱（GC-MS/MS）技术建立了同时检测7种类型蔬菜中氟吡菌酰胺及其代谢物残留的分析方法。样品采用乙腈提取,无水硫酸镁和氯化钠盐析后,经分散固相萃取（PSA）净化,GC-MS/MS检测。结果表明：在0.01、0.1和1 mg/kg 3个添加水平下,氟吡菌酰胺及其代谢物2-（三氟甲基）苯甲酰胺（BZM）的平均回收率在80%-108%之间,相对标准偏差（RSD）在1.5%-8.4%之间。氟吡菌酰胺及其代谢物在7种蔬菜中的检出限（LOD）（S/N=3）分别为2.17-3.13μg/kg和1.22-2.04μg/kg,两者的定量限（LOQ）均为0.01 mg/kg。该方法操作简便、稳定和快速,可以满足大部分蔬菜中氟吡菌酰胺及其代谢物的定性与定量分析要求。

关键词：气相色谱-串联质谱蔬菜氟吡菌酰胺代谢物残留

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稻曲病菌离体培养体系的构建与优化

农药学学报 2018年第1期20卷 41-48页

作者：刘晓玉潘九月 matsumoto haruna 范小艳林婷钱圆朱国念王蒙岑浙江大学农药与环境毒理研究所杭州310058 湖南农业大学植物保护学院长沙410128

稻曲病是水稻穗期的一种重要病害,严重影响稻米的产量和品质。稻曲病菌Ustilaginoidea virens在离体培养条件下生长缓慢,严重制约了杀菌剂室内生测试验的观察和高效筛选。本研究以稻曲病菌培养基为研究对象,通过筛选、组合和优化固体培... 详细信息

稻曲病是水稻穗期的一种重要病害,严重影响稻米的产量和品质。稻曲病菌Ustilaginoidea virens在离体培养条件下生长缓慢,严重制约了杀菌剂室内生测试验的观察和高效筛选。本研究以稻曲病菌培养基为研究对象,通过筛选、组合和优化固体培养体系的氮源、碳源、凝固剂以及阳离子浓度,以期构建适合稻曲病菌生长的室内培养体系。结果发现：在5种常见的商品化培养基中,稻曲病菌的生长速率仅为0.7～2.3 mm/d;而在18种配制培养基中,有77%的培养基对稻曲病菌表现出不同程度的生长促进效应,其中蛋白胨蔗糖结冷胶（PSGG）培养基的促进效果最显著（P〈0.05）,生长速率达3.4 mm/d,且其对不同地理分布的稻曲病菌菌株均有生长促进效应。此外,在以结冷胶作为凝固剂的培养基中添加质量分数为0.02%的硫酸镁（Mg^（2＋））,可有效提高培养基的凝固程度,且对菌丝体的生长速率无影响。在适合稻曲病菌生长的PSGG培养基中,蛋白胨和蔗糖是合适的氮源和碳源组合,结冷胶是合适的凝固剂。此研究结果可提高室内培养稻曲病菌的生长速率,为进一步理解稻曲病菌在离体条件下的生长机制及提高室内杀菌剂生测试验的效率提供了重要参考。

关键词：稻曲病菌菌丝生长速率培养基构建蛋白胨蔗糖结冷胶镁离子