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Antagonistic Potential of Bacterial Species against Fungal Plant Pathogens(FPP)and Their Role in Plant Growth Promotion(PGP):A Review

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Phyton-International Journal of Experimental Botany 2022年第9期91卷 1859-1877页

作者： Amjad Ali Yasir Iftikhar Mustansar Mubeen Haider Ali muhammad ahmad zeshan Zohaib Asad muhammad Zafar-ul-Hye Malik Abdul Rehman Mazhar Abbas muhammad Rafique muhammad Usman Ghani Department of Plant Protection Sivas University of Science and TechnologySivas58140Turkey Department of Plant Pathology College of AgricultureUniversity of SargodhaSargodha40100Pakistan College of Bioscience University of BirminghamBirminghamB152TTUK Department of Plant Pathology PMAS University of Arid AgricultureRawalpindi43490Pakistan Department of Soil Science Faculty of Agricultural Sciences and TechnologyBahauddin Zakariya UniversityMultan60800Pakistan Citrus Research Institute Sargodha40100Pakistan Department of Agriculture and Agribusiness Management University of Karachi75270KarachiPakistan Pest warning&Quality Control of Pesticides SahiwalPunjab40210Pakistan Institute of Soil and Environmental Sciences University of AgricultureFaisalabad38000Pakistan

Since the 19th century to date,the fungal pathogens have been involved in causing devastating diseases in *** types of fungal pathogens have been observed in important agricultural crops that lead to significant pre and postharvest *** application of synthetic fungicide against the fungal plant pathogens(FPP)is a traditional management practice but at the same time these fungicides kill other beneficial microbes,insects,animal,and humans and are harmful to *** antagonistic microorganism such as bacteria are being used as an alternate strategy to control the *** antagonistic species are cost-effective and eco-friendly in *** biocontrol bacteria have a broad mechanism against fungal pathogens present in the phyllosphere and rhizosphere of the *** antagonistic bacteria have different strategies against the FPP,by producing siderophore,biofilm,volatile organic compounds(VOCs),through parasitism,antibiosis,competition for limited resources and induce systemic resistance(ISR)in the host plant by activating the immune *** commercial bio-products synthesized by the major bacterial species Pseudomonas syringae,Burkholderia cepacia,Streptomyces griseoviridis,Pseudomonas fluorescens and Bacillus subtilis are used to control Fusarium,Pythium,Rhizoctonia,Penicillium,Alternaria,and *** commercial bio-formulations of bacteria act as both antifungal and plant growth *** Plant growth-promoting rhizobacteria(PGPR)played a significant role in improving plant health by nitrogen-fixing,phosphorus solubilization,phytohormones production,minimizing soil metal contamination,and by ACC deaminase antifungal *** articles are available on the specific antifungal activity of bacteria in plant ***,this review article has summarized the information on biocontrol activity of bacteria against the FPP and the role of PGPR in plant growth *** review also provided a complete picture

关键词： Fungi plant pathogens synthetic fungicide antagonism bio-products PGPR

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A Novel Fractional Dengue Transmission Model in the Presence of Wolbachia Using Stochastic Based Artificial Neural Network

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Computer Modeling in Engineering & Sciences 2024年第5期139卷 1217-1238页

作者： zeshan Faiz Iftikhar Ahmed Dumitru Baleanu Shumaila Javeed Department of Mathematics COMSATS University IslamabadIslamabad45550Pakistan Department of Mathematics Cankaya UniversityAnkara06790Turkey Institute of Space Sciences Magurele-Bucharest077125Romania Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung40402Taiwan Department of Computer Science and Mathematics Lebanese American UniversityBeirut135053Lebanon Department of Mathematics Mathematics Research CenterNear East UniversityNicosia/Mersin99138Turkey

The purpose of this research work is to investigate the numerical solutions of the fractional dengue transmission model(FDTM)in the presence of Wolbachia using the stochastic-based Levenberg-Marquardt neural network(LM-NN)*** fractional dengue transmission model(FDTM)consists of 12 *** human population is divided into four compartments;susceptible humans(S_(h)),exposed humans(E_(h)),infectious humans(I_(h)),and recovered humans(R_(h)).Wolbachia-infected and Wolbachia-uninfected mosquito population is also divided into four compartments:aquatic(eggs,larvae,pupae),susceptible,exposed,and *** investigated three different cases of vertical transmission probability(η),namely when Wolbachia-free mosquitoes persist only(η=0.6),when both types of mosquitoes persist(η=0.8),and when Wolbachia-carrying mosquitoes persist only(η=1).The objective of this study is to investigate the effectiveness of Wolbachia in reducing dengue and presenting the numerical results by using the stochastic structure LM-NN approach with 10 hidden layers of neurons for three different cases of the fractional order derivatives(α=0.4,0.6,0.8).LM-NN approach includes a training,validation,and testing procedure to minimize the mean square error(MSE)values using the reference dataset(obtained by solving the model using the Adams-Bashforth-Moulton method(ABM).The distribution of data is 80% data for training,10% for validation,and,10% for testing purpose)results.A comprehensive investigation is accessible to observe the competence,precision,capacity,and efficiency of the suggested LM-NN approach by executing the MSE,state transitions findings,and regression *** effectiveness of the LM-NN approach for solving the FDTM is demonstrated by the overlap of the findings with trustworthy measures,which achieves a precision of up to 10^(-4).

关键词： Wolbachia dengue neural network vertical transmission mean square error Levenberg-Marquardt

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水稻花粉小肽锌指蛋白基因OsFLZ13功能研究

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作物学报 2024年第3期50卷 543-555页

作者：张丽洁周海宇 muhammad zeshan MUNSIF Ali Shad 杨明冲李波韩世健张翠翠胡利华王令强广西大学亚热带农业生物资源保护与利用国家重点实验室广西南宁530004 广西大学农学院广西南宁530004 广西大学生命科学技术学院广西南宁530004

FCS样锌指蛋白(FLZ)与植物的生长发育和逆境胁迫反应相关。水稻的FLZ基因家族分析和功能研究较少。本研究利用TBtools对水稻基因组Blast,鉴定到29个OsFLZ家族基因成员,并分析了相关基因位置、基因结构、motif和启动子顺式作用元件等特... 详细信息

FCS样锌指蛋白(FLZ)与植物的生长发育和逆境胁迫反应相关。水稻的FLZ基因家族分析和功能研究较少。本研究利用TBtools对水稻基因组Blast,鉴定到29个OsFLZ家族基因成员,并分析了相关基因位置、基因结构、motif和启动子顺式作用元件等特征。随后,通过水稻CREP数据库研究了FLZ家族成员的全生育期组织表达模式,并发现其中的OsFLZ13基因在开花前的花药中特异高水平表达。随后β-D-葡萄糖苷酸酶(GUS)染色显示,OsFLZ13在花药发育的第8阶段开始表达,并在开花前的第14阶段表达量最高。用CRISPR/Cas9基因编辑获得的突变体植株结实率显著下降。相比野生型中花11的94%结实率,Osflz13-1和Osflz13-2的结实率分别只有44%和36%。本研究表明OsFLZ13参与花药发育以及花粉育性的调控,为进一步研究该基因及其家族基因的功能提供参考,同时对水稻雄性不育利用具有潜在的价值。

关键词：水稻花粉结实率 FLZ基因家族

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Crank-Nicolson Quasi-Compact Scheme for the Nonlinear Two-Sided Spatial Fractional Advection-Diffusion Equations

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Journal of Applied Mathematics and Physics 2024年第4期12卷 1089-1100页

作者： Dechao Gao zeshan Qiu Lizan Wang Jianxin Li Department of Basic Education Xinjiang University of Political Science and Law Tumushuke China

The higher-order numerical scheme of nonlinear advection-diffusion equations is studied in this article, where the space fractional derivatives are evaluated by using weighted and shifted Grünwald difference operators and combining the compact technique, in the time direction is discretized by the Crank-Nicolson method. Through the energy method, the stability and convergence of the numerical scheme in the sense of L2-norm are proved, and the convergence order is . Some examples are given to show that our numerical scheme is effective.

关键词： Crank-Nicolson Quasi-Compact Scheme Fractional Advection-Diffusion Equations Nonlinear Stability and Convergence

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改进一致性哈希优化存储邮政数据算法的研究

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现代电子技术 2024年第6期47卷 43-48页

作者：李泽山国家林业和草原局信息中心北京100714

随着电子商务不断发展,邮政快递行业数据日益增多,传统方式对于邮政数据存储的理论与方法都已无法满足需求。基于此情况,使用一致性哈希算法来解决存储系统的横向弹性扩展,结合一致性哈希的虚拟节点与加权轮询算法优化Hadoop平台下分布... 详细信息

随着电子商务不断发展,邮政快递行业数据日益增多,传统方式对于邮政数据存储的理论与方法都已无法满足需求。基于此情况,使用一致性哈希算法来解决存储系统的横向弹性扩展,结合一致性哈希的虚拟节点与加权轮询算法优化Hadoop平台下分布式文件系统(HDFS)存储策略,实现集群在同构与异构条件下的数据均衡效果。同时介绍集群节点数据转移思想,设计负载因子与系统自检周期,实现了集群动态权重的负载转移,并进行实验验证。实验结果表明,文章提出的改进算法与HDFS、普通一致性哈希相比,在不同条件下集群负载差值均有不同程度的提升,证明了该策略可以有效降低集群节点间负载差值。

关键词：数据存储一致性哈希算法加权轮询算法分布式文件系统负载均衡异构集群分配策略

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Yields,growth and water use under chemical topping in relations to row configuration and plant density in drip-irrigated cotton

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Journal of Cotton Research 2024年第2期7卷 123-136页

作者： Wang Xuejiao Hu Yanping Ji Chunrong Chen Yongfan Sun Shuai Zhang zeshan Zhang Yutong Wang Sen Yang Mingfeng Ji Fen Guo Yanyun Li Jie Zhang Lizhen Xinjiang Agriculture Network Information Center Xinjiang Agrometeorological ObservatoryUrumqi 830002China College of Resources and Environmental Sciences Xinjiang Agricultural UniversityUrumqi 830091China College of Resources and Environmental Sciences China Agricultural UniversityBeijing 100193China China Meteorological Administration Institute of Desert MeteorologyUrumqi 830002China Wulanwusu Agrometeorological Station Shihezi 832199China Xinjiang Academy of Agricultural Sciences China National Cotton R&D CenterUrumqi 830091China

Background Water deficit is an important problem in agricultural production in arid *** the advent of wholly mechanized technology for cotton planting in Xinjiang,it is important to determine which planting mode could achieve high yield,fiber quality and water use efficiency(WUE).This study aimed to explore if chemical topping affected cotton yield,quality and water use in relation to row configuration and plant *** Experiments were carried out in Xinjiang China,in 2020 and 2021 with two topping method,manual topping and chemical topping,two plant densities,low and high,and two row configurations,i.e.,76 cm equal rows and 10+66 cm narrow-wide rows,which were commonly applied in matching harvest *** topping increased seed cotton yield,but did not affect cotton fiber quality comparing to traditional manual *** equal row spacing,the WUE in higher density was 62.4%higher than in the lower ***,under narrow-wide row spacing,the WUE in lower density was 53.3%higher than in higher one(farmers’practice).For machine-harvest cotton in Xinjiang,the optimal row configuration and plant density for chemical topping was narrow-wide rows with 15 plants m-2 or equal rows with 18 plants *** The plant density recommended in narrow-wide rows was less than farmers’practice and the density in equal rows was moderate with local *** results provide new knowledge on optimizing agronomic managements of machine-harvested cotton for both high yield and water efficient.

关键词： Yield components Fiber quality Transpiration Water use efficiency Heat ratio method(HRM)

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镍夹层厚度对铝/铜超声焊接头力学性能影响

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应用声学 2024年

作者：邓建雄赵伦唐正强 zeshan ABBAS 许龙严卓晟贵州大学机械工程学院深圳职业技术大学超声技术研究所中国计量大学理学院广州市新栋力超声电子设备有限公司

为探究镍夹层厚度对铝/铜接头力学性能的影响规律，采用超声波焊接技术制备了含镍夹层铝/铜异种金属搭接接头。通过红外热成像仪、光学显微镜、拉伸剪切试验和扫描电子显微镜(SEM)对接头焊接过程热影响、界面连接状态、力学性能及失效... 详细信息

为探究镍夹层厚度对铝/铜接头力学性能的影响规律，采用超声波焊接技术制备了含镍夹层铝/铜异种金属搭接接头。通过红外热成像仪、光学显微镜、拉伸剪切试验和扫描电子显微镜(SEM)对接头焊接过程热影响、界面连接状态、力学性能及失效形式进行分析。结果表明：0.05 mm厚镍夹层在超声焊接高温作用下发生软化减薄，充当了板材间润滑剂，减小了板材间的摩擦阻力，焊接温度较其他厚度夹层高，温度对其他夹层厚度变化不敏感。随着镍夹层厚度的增加，接头峰值载荷先增大后减小，接头力学性能与夹层厚度存在显著的相关性；0.10 mm厚镍夹层破坏后其塑性流动能力较差导致接头界面呈波浪状结合，具有铝-镍、铜-镍和铝-铜三种界面结合方式，较其他接头抗拉强度与抗冲击性能更优。SEM分析表明，铜侧失效形式表现为韧性断裂，铝侧为韧脆混合断裂。因此，镍夹层厚度对铝/铜超声焊接接头的力学性能和失效模式有着决定性影响，选择合适的夹层厚度对于提高接头的性能至关重要。

关键词：超声焊接铝/铜异种金属焊接镍中间层

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Electric-field induced fluctuations in laser generated plasma plume

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Plasma Science and Technology 2021年第4期23卷 83-89页

作者： Rizwan AHMED Abdul JABBAR zeshan Adeel UMAR muhammad Aslam BAIG National Centre for Physics Quaid-i-Azam University Campus45320 IslamabadPakistan

The effect of an external electric field on laser-generated plasma has been *** is observed that the laser-generated plasma can be used for the ignition of a spark in the presence of a low voltage external electric *** eight-fold emission intensity enhancement in Cu I spectral lines are measured as compared to the signal intensity in the absence of an external electric *** plasma parameters remain the same initially,up to a few microseconds after the generation of plasma,and this feature makes it more interesting for the quantitative analysis of any sample using laser induced breakdown spectroscopy(LIBS).In the presence of an external electric field,fluctuations(contraction and expansion)in the laser-generated plasma are observed which increase the plasma decay time and consequently result in enhanced signal intensity.

关键词： LIBS laser produced plasma effect of external electric plasma parameters

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地理标志对国内葡萄酒消费动机的唤醒与激励机制的研究

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中国酿造 2024年第2期43卷 269-275页

作者：冯泽山杨和财西北农林科技大学经济管理学院陕西杨凌712100 西北农林科技大学葡萄酒学院陕西杨凌712100

研究和把握消费者消费动机,是从根源上解决当前国内葡萄酒产品消费动力不足问题的关键方法。该研究利用动机唤醒理论与双因素理论,搭建地理标志与葡萄酒消费动机之间的桥梁,研究地理标志对葡萄酒消费者消费动机的唤醒与激励机制。结果表... 详细信息

研究和把握消费者消费动机,是从根源上解决当前国内葡萄酒产品消费动力不足问题的关键方法。该研究利用动机唤醒理论与双因素理论,搭建地理标志与葡萄酒消费动机之间的桥梁,研究地理标志对葡萄酒消费者消费动机的唤醒与激励机制。结果表明,地理标志从自然因素与人文因素两个维度的差异影响葡萄酒消费;地理标志通过影响葡萄酒的“有效刺激物”,从视觉、嗅觉、味觉、精神等方面刺激消费者的唤醒状态,引导消费者产生消费动机;在双因素理论视角下,地理标志通过影响葡萄酒的保健因素与激励因素,减小制约消费者的约束力或增大消费者的内在驱动力来激励消费者的可持续消费行为。基于研究结论,提出了促进国内葡萄酒消费发展的建议。

关键词：地理标志消费动机双因素理论动机唤醒激励机制

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基于自适应鲸鱼算法的桥梁传感器优化布置方法

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噪声与振动控制 2024年第1期44卷 59-63,91页

作者：马成武高博李泽山兰州交通大学机电工程学院兰州730070

为解决桥梁健康监测系统中传感器优化布置问题,提出一种基于自适应鲸鱼优化算法的传感器布置方法。通过Fisher信息阵二范数变化率和模态有效参与质量提取模态,有效避免模态冗余。引入Kent映射生成初始测点,以模态置信准则为适应度函数... 详细信息

为解决桥梁健康监测系统中传感器优化布置问题,提出一种基于自适应鲸鱼优化算法的传感器布置方法。通过Fisher信息阵二范数变化率和模态有效参与质量提取模态,有效避免模态冗余。引入Kent映射生成初始测点,以模态置信准则为适应度函数。针对鲸鱼算法中参数既控制算法的全局和局部搜索又控制算法的搜索步长,且其开发能力不足等问题,将鲸鱼算法中的参数A分解为决策因子A1和衰减因子A2。通过决策因子A1控制鲸鱼算法的全局和局部搜索,增强算法跳出局部最优的能力;通过衰减因子A2动态调整算法的搜索步长,提升鲸鱼算法搜索效率和精度。通过哈齐大桥进行实例验证,结果表明,改进后鲸鱼算法的模态置信矩阵精度相比粒子群算法提升82.29%。

关键词：振动与波模态分析鲸鱼优化算法传感器优化布置模态置信准则整数编码

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