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Recognition of the inducible,secretory small protein OsSSP1 by the membrane receptor OsSSR1 and the co-receptor OsBAK1 confers rice resistance to the blast fungus

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Molecular Plant 2024年第5期17卷 807-823页

作者： Tianfeng Zhao Shijie Ma Ziying Kong Haimiao Zhang Yi Wang Junzhe Wang Jiazong Liu Wanzhen Feng Tong Liu Chunyan Liu Suochen Liang Shilin lu Xinyu Li Haipeng Zhao chongchong lu Muhammad Zunair Latif Ziyi Yin Yang Li Xinhua Ding State Key Laboratory of Crop Biology Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTaian 271018ShandongChina College of Breeding and Multiplication(Sanya Institute of Breeding and Multiplication) Hainan UniversitySanya 572024HainanChina

The plant apoplast,which serves as the frontline battleground for long-term host–pathogen interactions,harbors a wealth of disease resistance resources.However,the identification of the disease resistance proteins in the apoplast is relatively lacking.In this study,we identified and characterized the rice secretory protein OsSSP1(Oryza sativa secretory small protein 1).OsSSP1 can be secreted into the plant apoplast,and either in vitro treatment of recombinant OsSSP1 or overexpression of OsSSP1 in rice could trigger plant immune response.The expression of OsSSP1 is suppressed significantly during Magnaporthe oryzae infection in the susceptible rice variety Taibei 309,and OsSSP1-overexpressing lines all show strong resistance to M.oryzae.Combining the knockout and overexpression results,we found that OsSSP1 positively regulates plant immunity in response to fungal infection.Moreover,the recognition and immune response triggered by OsSSP1 depend on an uncharacterized transmembrane OsSSR1(secretory small protein receptor 1)and the key co-receptor OsBAK1,since most of the induced immune response and resistance are lost in the absence of OsSSR1 or OsBAK1.Intriguingly,the OsSSP1 protein is relatively stable and can still induce plant resistance after 1 week of storage in the open environment,and exogenous OsSSP1 treatment for a 2-week period did not affect rice yield.Collectively,our study reveals that OsSSP1 can be secreted into the apoplast and percepted by OsSSR1 and OsBAK1 during fungal infection,thereby triggering the immune response to enhance plant resistance to M.oryzae.These findings provide novel resources and potential strategies for crop breeding and disease control.

关键词： rice plant apoplast OsssP1 receptor plant resistance Magnaporthe oryzae

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SlMYB1 regulates the accumulation of lycopene, fruit shape, and resistance to Botrytis cinerea in tomato

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Horticulture Research 2023年第2期10卷 286-297页

作者： Ziyi Yin Jiazong Liu Haipeng Zhao Xiaomeng Chu Haoqi Liu Xiangyu Ding chongchong lu Xinyu Wang Xiangyu Zhao Yang Li Xinhua Ding State Key Laboratory of Crop Biology Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect PestsCollege of plant protectionShandong Agricultural UniversityTaian 271018ShandongChina State Key Laboratory of Crop Biology College of Academy of Life ScienceShandong Agricultural UniversityTaian 271018ShandongChina

Fruit lycopene,shape,and resistance are essential traits in vegetables whose final product is fruit,and they are also closely related to and strictly regulated by multiple transcription factors.Lycopene,which cannot be synthesized by the human body and can only be ingested from the outside,was important in maintaining human health.During fruit ripening and post-harvest,tomato plants face a variety of biotic or abiotic stresses,which might inf lict great damage to fruit quality due to its f lat shape and pointed tip during storage and transportation.Therefore,there is an urgent need for key molecular switches to simultaneously improve fruit lycopene and resistance to biotic stress during ripening.Here,we identified the MYB transcription factor SlMYB1 in tomato plants which could bind to the promoters of lycopene synthesis-related genes,SlLCY1,SlPSY2,and the pathogen-related gene SlPR5 directly,to regulate the fruit lycopene and resistance to Botrytis cinerea in tomato.In addition to regulating lycopene synthesis,SlMYB1 also regulates the content of soluble sugar,soluble protein and f lavonoid in tomato.What’s more,SlMYB1 could regulate the tomato fruit shape,making it smoother or f latter to prevent skin damage caused by vibration on fruits.RNA sequencing(RNA-seq)further showed that SlMYB1 fruit-specific expression lines had multiple differentially expressed genes compared with those from wild-type plants,suggesting that SlMYB1 might have multiple roles in fruit nutritional quality control and resistance to stresses,which is a rare occurrence in previous studies.In summary,our results revealed that SlMYB1 was an essential multi-functional transcription factor that could regulate the lycopene and resistance to Botrytis cinerea,and change the shape of fruit in tomato plants.

关键词： resistance shape MYB1

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The bacterial effector AvrRxo1 inhibits vitamin B6 biosynthesis to promote infection in rice

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Plant Communications 2022年第3期3卷 89-101页

作者： Haifeng Liu chongchong lu Yang Li Tao Wu Baogang Zhang Baoyou Liu Wenjie Feng Qian Xu Hansong Dong Shengyang He Zhaohui Chu Xinhua Ding State Key Laboratory of Crop Biology Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTai an271018 ShandongPR China College of Agronomy Shandong Agricultural UniversityTai an271018 ShandongPR China Department of Energy Plant Research Laboratory Michigan State UniversityEast LansingMI 48824USA Department of Biology Duke UniversityDurhamNC 27708USA Howard Hughes Medical Institute Duke UniversityDurhamNC 27708USA State Key Laboratory of Hybrid Rice College of Life SciencesWuhan UniversityWuhan430072 HubeiPR China

Xanthomonas oryzae pv.oryzicola(Xoc),which causes rice bacterial leaf streak,invades leaves mainly through stomata,which are often closed as a plant immune response against pathogen invasion.How Xoc overcomes stomatal immunity is unclear.Here,we show that the effector protein AvrRxo1,an ATPdependent protease,enhances Xoc virulence and inhibits stomatal immunity by targeting and degrading rice OsPDX1(pyridoxal phosphate synthase),thereby reducing vitamin B6(VB6)levels in rice.VB6 is required for the activity of aldehyde oxidase,which catalyzes the last step of abscisic acid(ABA)biosynthesis,and ABA positively regulates rice stomatal immunity against Xoc.Thus,we provide evidence supporting a model in which a major bacterial pathogen inhibits plant stomatal immunity by directly targeting VB6 biosynthesis and consequently inhibiting the biosynthesis of ABA in guard cells to open stomata.Moreover,AvrRxo1-mediated VB6 targeting also explains the poor nutritional quality,including low VB6 levels,of Xoc-infected rice grains.

关键词： rice bacterial leaf streak effector stomatal immunity pyridoxal phosphate synthase vitamin B6(VB6) abscisic acid(ABA)

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组织忘却前因和后果研究的元分析

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海南大学学报（人文社会科学版） 2024年第3期42卷 202-210页

作者：吕冲冲张宗泽王胜伟兰州大学管理学院甘肃兰州730013 国家互联网应急中心海南分中心海南海口570100

政策、技术和市场的持续变化使得企业置身于动荡的外部环境中,企业必须积极响应,以适应动态变化的外部环境,从而保持竞争优势,维持自身的生存和发展。组织忘却作为一种适应行为,备受学术界和业界关注,但其与各变量之间的关系在不同研究... 详细信息

政策、技术和市场的持续变化使得企业置身于动荡的外部环境中,企业必须积极响应,以适应动态变化的外部环境,从而保持竞争优势,维持自身的生存和发展。组织忘却作为一种适应行为,备受学术界和业界关注,但其与各变量之间的关系在不同研究中仍存在较大差异。为了明确组织忘却的前因及后果变量,本研究对国内外39篇实证研究中的31909个样本进行了元分析。结果表明,组织外部环境的动态性和组织内部的创业导向、组织即兴均能促进企业开展组织忘却;组织忘却行为有助于提升企业财务绩效、突破式创新和新产品开发等创新绩效,在推动企业开展组织学习、提升吸收能力和动态能力、助力战略转型、增强持续竞争能力等方面发挥着积极作用。

关键词：组织忘却元分析前因变量后果变量

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Multiple forms of vitamin B_(6) regulate salt tolerance by balancing ROS and abscisic acid levels in maize root

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Stress Biology 2022年第1期2卷 197-210页

作者： chongchong lu Yuan Tian Xuanxuan Hou Xin Hou Zichang Jia Min Li Mingxia Hao Yanke Jiang Qingbin Wang Qiong Pu Ziyi Yin Yang Li Baoyou Liu Xiaojing Kang Guangyi Zhang Xinhua Ding Yinggao Liu State Key Laboratory of Crop Biology Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect PestsCollege of Plant ProtectionShandong Agricultural UniversityTaian 271018ShandongChina Shandong Pengbo Biotechnology Co. LTDTaian 271018China Shandong Agriculture and Engineering University Jinan 250000ShandongChina Yantai Academy of Agricultural Sciences Yantai 265500ShandongChina Shandong Xinyuan Seed Industry Co. LTDTaian 271000China

Salt stress causes osmotic stress,ion toxicity and oxidative stress,inducing the accumulation of abscisic acid(ABA)and excessive reactive oxygen species(ROS)production,which further damage cell structure and inhibit the development of roots in plants.Previous study showed that vitamin B_(6)(VB_(6))plays a role in plant responses to salt stress,however,the regulatory relationship between ROS,VB_(6) and ABA under salt stress remains unclear yet in plants.In our study,we found that salt stress-induced ABA accumulation requires ROS production,in addition,salt stress also promoted VB_(6)(including pyridoxamine(PM),pyridoxal(PL),pyridoxine(PN),and pyridoxal 5′-phosphate(PLP))accumulation,which involved in ROS scavenging and ABA biosynthesis.Furthermore,VB_(6)-deficient maize mutant small kernel2(smk2)heterozygous is more susceptible to salt stress,and which failed to scavenge excessive ROS effectively or induce ABA accumulation in maize root under salt stress,interestingly,which can be restored by exogenous PN and PLP,respec-tively.According to these results,we proposed that PN and PLP play an essential role in balancing ROS and ABA levels under salt stress,respectively,it laid a foundation for VB_(6) to be better applied in crop salt resistance than ABA.

关键词： Vitamin B_(6) Abscisic acid Reactive oxygen species Salt stress smk2

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Photoreduction of CO_(2) in the presence of CH_(4) over g-C_(3)N_(4) modified with TiO_(2) nanoparticles at room temperature

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Green Energy & Environment 2021年第6期6卷 938-951页

作者： Ming Chen Jiachen Wu chongchong lu Xiao luo Yangqiang Huang Bo Jin Hongxia Gao Xiaowen Zhang Morris Argyle Zhiwu Liang Joint International Center for CO2 Capture and Storage(iCCS) Provincial Hunan Key Laboratory for Cost-effective Utilization of Fossil Fuel Aimed at Reducing Carbon-dioxide EmissionsDepartment of Chemical EngineeringCollege of Chemistry and Chemical EngineeringAdvanced Catalytic Engineering Research Center of the Ministry of EducationHunan UniversityChangsha410082China Department of Chemical and Petroleum Engineering University of WyomingLaramieWY82071USA Department of Chemical Engineering Brigham Young UniversityProvoUT84602USA

CO_(2)reduction under simulated sunlight over photocatalysts has become an attractive researcher area recently.In this work,carbon nitride compounds modified by TiO_(2)nanoparticles(TNPs)have been used for the photoreduction of CO_(2)in the presence of CH_(4)at room temperature.Briefly,a series of noble-metal-free TNP-graphitic-carbon nitride(g-C_(3)N_(4),also abbreviated CN)photocatalysts with different TNPs loadings and calcination temperatures have been synthesized by a wet-chemical method.The characterization results of XRD,FTIR,SEM,TEM,BET,XPS,CO_(2)Adsorption,UV-vis,and PL demonstrate that the BET surface area and CO_(2)adsorption capacity have been improved after the calcination.Besides,the g-C_(3)N_(4)has been successfully coupled with the TNPs and a heterojunction has formed at their interface.These characters contribute to increase the photocatalytic activity of TNPs-CN toward reducing CO_(2)in the presence of CH_(4),and its'performance is better than bare g-C_(3)N_(4),Titania(P_(25))-CN,MgO-CN,or Cu_(2)O-CN.Orthogonal experiments are then carried out to investigate the sensitivity factors and optimum conditions.The sensitivity results show that the reaction pressure makes little difference on the photocatalysis results,which verifies the photoinduced CO_(2)-CH_(4)reaction has a tiny change in gas volume.In addition,under the optimum conditions,the turnover frequency(TOF)of CO after 4 h reaction can reach 9.98μmol g-cat.^(-1)h^(-1),and traces of ethane and ethylene have been detected during the reactions.In addition,surface acetate and carbonaceous deposit are found on the(20)TNPs-CN/450 surface after continuous 24 h irradiation under the optimum conditions,which resulting in the inactivation of the catalyst.Finally,possible reaction mechanisms have been proposed based on the results.

关键词： Noble-metal-free Photoinduced CO_(2)-CH_(4) Sensitivity factors Surface acetate Inactivation

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柱前衍生-高效液相色谱法测定肥料中芸苔素内酯异构体

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分析试验室 2023年第3期42卷 368-371页

作者：王庆彬赵红玲史磊彭春娥孙健路冲冲孙秀丽张民山东蓬勃生物科技有限公司泰安271000 土肥高效利用国家工程中心山东农业大学资源与环境学院泰安271018 作物生物学国家重点实验室山东农业大学生命科学学院泰安271018

建立了以苯硼酸为衍生试剂,柱前衍生-高效液相色谱测定肥料中24-表芸苔素内酯(24-EBL)和28-高芸苔素内酯(28-HBR)的方法。样品采用甲醇作为提取溶剂,常温条件下用苯硼酸衍生30 min,乙腈/水(85/15, V/V)为流动相,在222 nm波长下进行分析... 详细信息

建立了以苯硼酸为衍生试剂,柱前衍生-高效液相色谱测定肥料中24-表芸苔素内酯(24-EBL)和28-高芸苔素内酯(28-HBR)的方法。样品采用甲醇作为提取溶剂,常温条件下用苯硼酸衍生30 min,乙腈/水(85/15, V/V)为流动相,在222 nm波长下进行分析。结果表明:在0~1250 mg/kg范围内线性关系良好,相关系数(r^(2))≥0.999。24-EBL和28-HBR的检出限分别为0.46和0.51 mg/kg。样品加标回收率为67.1%~128.5%,批间相对标准偏差为0.09%~2.4%。该方法满足2种芸苔素内酯异构体在肥料内定量分析的要求。

关键词： 24-表芸苔素内酯 28-高芸苔素内酯肥料植物生长调节剂

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FCM测站定权的LAGEOS-2卫星精密定轨影响分析

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大地测量与地球动力学 2024年第7期44卷 684-689页

作者：王军傲钟世明张杰周冲冲郭钊路润民中国科学院精密测量科学与技术创新研究院大地测量与地球动力学国家重点实验室武汉市430077 中国科学院大学地球与行星科学学院北京市100049 中国科学院精密测量科学与技术创新研究院武汉大地测量国家野外科学观测研究站武汉市430077

由于卫星激光测距(satellite laser ranging, SLR)台站的测距精度和稳定性存在差异,精密定轨中需要对不同性能的台站赋予不同权重。本文将模糊C均值(fuzzy C-means, FCM)聚类定权应用于LAGEOS-2精密定轨,并比较原始测站定权和FCM定权对... 详细信息

由于卫星激光测距(satellite laser ranging, SLR)台站的测距精度和稳定性存在差异,精密定轨中需要对不同性能的台站赋予不同权重。本文将模糊C均值(fuzzy C-means, FCM)聚类定权应用于LAGEOS-2精密定轨,并比较原始测站定权和FCM定权对轨道精度的影响。结果表明:1)相较于原始测站定权,FCM定权更能反映各SLR台站的性能,提高定轨精度和观测值数量;2)对于ILRS四个质量分析机构,原始测站定权下JCET发布的质量报告在定轨精度上略优于其他中心,采用FCM定权后,以4个机构发布的质量报告进行定轨的结果在同一水平,轨道精度为4.83~4.86 cm。

关键词：卫星激光测距模糊C均值聚类定权卫星精密定轨

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Paecilomyces variotii extracts（ZNC） enhance plant immunity and promote plant growth

Paecilomyces variotii extracts（ZNC） enhance plant immunity...

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中国植物病理学会2019年学术年会

作者： lu chongchong Liu Haifeng Jiang Depeng Wang lulu Jiang Yanke Tang Shuya Hou Xuwen Han Xinyi Liu Zhiguang Zhang Min Chu Zhaohui Ding Xinhua State Key Laboratory of Crop Biology Shandong Provincial Key Laboratory for Biology of Vegetable Diseases and Insect PestsShandong Agricultural University Shandong Pengbo Biotechnology Co. LTD National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources College of Recourses and EnvironmentShandong Agricultural University

The crude extract of the endophytePaecilomyces variotii known as ZhiNengCong（ZNC）has function of promoting plant growth and enhancing disease resistance and is widely used in China.Our study aims to evaluate the molecular mechanisms of plant growth promotion and disease protection.We generated transcriptome profiles from ZNC-treated seedlings using RNA sequencing.The function of salicylic acid（SA） in ZNC-mediated immunity was examined using SA biosynthesis and signaling pathway mutants.The concentrations of nitrogen（N） and phosphorus（P） in seedlings under ZNC treatment were measured.The effect of ZNC on the level of the hormone auxin in roots was tested using transgenic plants containing DR5:GFP.ZNC exhibited ultrahigh activity in promoting plant growth and enhancing disease resistance,even at concentrations as low as 1-10 ng/mL.ZNC induced ROS accumulation,callose deposition,and expression of PR genes.SA biosynthesis and signaling pathways were required for the ZNC-mediated defense response.Moreover,in improving plant growth,ZNC increased the level of auxin in root tips and regulated the absorption of N and P.According to these results,ZNC is a highly effective plant elicitor that promotes plant growth by inducing auxin accumulation at the root tip at low concentrations and enhances plant disease resistance by activating the SA signaling pathway at high concentrations.

关键词： Plant elicitors Plant growth promotion Plant endophyte Disease resistance Auxin Salicylic acid

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一种表征可吸收胶原蛋白材料孔结构的方法研究

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中国医疗设备 2024年第4期39卷 8-12页

作者：王常斌王秀秀陈洪建艾冲冲万敏卢文博山东省医疗器械和药品包装检验研究院山东济南250101 国家药品监督管理局生物材料器械安全性评价重点实验室山东济南250101 山东省医疗器械生物学评价重点实验室山东济南250101

目的研究一种表征可吸收胶原蛋白材料微观形貌的方法,并分析其孔隙率和孔径。方法利用场发射扫描电子显微镜(Scanning Electron Microscope,SEM),在不同的加速电压下对未喷金样品和喷金样品进行拍摄,使用Image J软件对所得的SEM图像的... 详细信息

目的研究一种表征可吸收胶原蛋白材料微观形貌的方法,并分析其孔隙率和孔径。方法利用场发射扫描电子显微镜(Scanning Electron Microscope,SEM),在不同的加速电压下对未喷金样品和喷金样品进行拍摄,使用Image J软件对所得的SEM图像的孔隙率和孔径进行分析,并对结果的有效性进行验证。结果样品未喷金时使用低倍加速电压可获得清晰的SEM图像;样品喷金后其耐受电压能力明显提高,即使在较高的加速电压下依然能获得清晰的SEM图像。使用Image J软件可对拍摄的SEM图像的孔径和孔隙率进行分析,其中,平均孔隙率为50.9%,平均孔径为11.9μm;孔隙率离散系数为8.6%,孔径离散系数6.7%。结论场发射SEM结合Image J软件是一种表征可吸收胶原蛋白材料孔结构的有效方法,可解决相关标准中方法缺失的问题。

关键词：场发射扫描电子显微镜可吸收胶原蛋白孔结构 Image J软件

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