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Phyton-International Journal of Experimental Botany 2023年第9期92卷 2473-2488页

作者： Tongman zhao Yujie Fan Yabing Cao xiaogai zhao Guoqiang Fan Institute of Paulownia Henan Agricultural UniversityZhengzhou450002China College of Forestry Henan Agricultural UniversityZhengzhou450002China

Somatic embryogenesis receptor-like kinases(SERKs)are receptor-like proteins that contain leucine-rich repeats and are involved in various signaling *** study identified SERK family members in the Paulownia fortunei genome and analyzed their characteristics and expression profiles using bioinformatics *** identified 12 SERK genes with relatively conserved gene structures and motifs that were distributed unevenly on eight Paulownia *** gene promoters contained various cis-acting elements that regulated the expression of the PfSERK genes in response to hormones and abiotic *** analysis indicated that 10 segmental duplication events had occurred during evolution of the PfSERK *** expression profile of PfSERKs in various tissues of Paulownia fortunei was detected by quantitative real-time PCR(qRT-PCR).Many PfSERK genes can respond to drought and salt *** with RNA-seq and protein interaction network,it is speculated that PfSERK3/11 may participate in the occurrence of Paulownia witches’broom(PaWB)by regulating the plant height of Paulownia.

关键词： Gene expression Paulownia fortunei Paulownia witches’broom SERK

可降解螯合剂对铅镉胁迫下刺槐离子富集、生长及土壤特性的影响

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河南林业科技 2024年第3期44卷 20-24页

作者：张少伟王琳刘淑萍刘昌胜赵晓改河南开放大学郑州450046 河南科技学院河南新乡453003

可降解螯合剂可增加植物对重金属的富集作用。试验以刺槐材料,在铅(Pb)600 mg·kg^(-1)和镉(Cd)20 mg·kg^(-1)复合污染土壤中,加入不同浓度0.5、2.5和5.0 mmol·kg^(-1)的氮基三乙酸(Nitrilotriacetic acid,NTA)和脂肪醇聚氧乙烯醚硫酸... 详细信息

可降解螯合剂可增加植物对重金属的富集作用。试验以刺槐材料,在铅(Pb)600 mg·kg^(-1)和镉(Cd)20 mg·kg^(-1)复合污染土壤中,加入不同浓度0.5、2.5和5.0 mmol·kg^(-1)的氮基三乙酸(Nitrilotriacetic acid,NTA)和脂肪醇聚氧乙烯醚硫酸钠(Sodium Alcohol Ether Sulphate,AES),测定其对离子富集、刺槐生长特性及土壤特性的影响。结果表明:NTA和AES均促进了刺槐根对铅镉离子的富集,低浓度NTA与高浓度AES促进了刺槐根干重的累积;高浓度AES显著提高了刺槐地上部对铅镉离子的富集(pNTA;NTA和AES螯合剂处理对刺槐幼苗生长影响不显著;螯合剂处理促进了土壤酸性磷酸酶活性;土壤pH值AES>NTA。高浓度5.0 mmol·kg^(-1)AES对刺槐生物量的积累、铅镉离子的富集和向地上部的转运均有良好促进作用,在刺槐强化修复重金属污染土壤中具有一定的参考价值。

关键词：刺槐螯合剂铅镉胁迫 AES NTA 离子富集土壤特性

Genomic insights into the fast growth of paulownias and the formation of Paulownia witches' broom

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Molecular Plant 2021年第10期14卷 1668-1682页

作者： Yabing Cao Guiling Sun Xiaoqiao Zhai Pingluo Xu Liming Ma Minjie Deng Zhenli zhao Haibo Yang Yanpeng Dong Zhonghai Shang Yujie Lv Lijun Yan Haifang Liu Xibing Cao Bingbing Li Zhe Wang xiaogai zhao Haiyan Yu Fan Wang Wen Ma Jinling Huang Guoqiang Fan Institute of Paulownia Henan Agricultural UniversityZhengzhouHenan 450002China College of Forestry Henan Agricultural UniversityZhengzhouHenan 450002China Key Laboratory of Plant Stress Biology State Key Laboratory of Crop Stress Adaptation and ImprovementState Key Laboratory of Cotton BiologySchool of Life SciencesHenan UniversityKaifengHenan 475004China Henan Academy of Forestry ZhengzhouHenan 450002China Biomarker Technologies Corporation Beijing 101399China Department of Biology East Carolina UniversityGreenvilleNC 27858USA

Paulownias are among the fastest growing trees in the world,but they often suffer tremendous loss of wood production due to infection by Paulownia witches'broom(PaWB)*** this study,we have sequenced and assembled a high-quality nuclear genome of Paulownia fortunei,a commonly cultivated paulownia *** assembled genome of *** is 511.6 Mb in size,with 93.2%of its sequences anchored to 20 pseudo-chromosomes,and it contains 31985 protein-coding *** analyses show that the family Paulowniaceae is sister to a clade composed of Phrymaceae and *** photosynthetic efficiency is achieved by integrating C3 photosynthesis and the crassulacean acid metabolism pathway,which may contribute to the extremely fast growth habit of paulownia *** transcriptome analyses reveal modules related to cambial growth and development,photosynthesis,and defense *** genome sequencing of PaWB phytoplasma,combined with functional analyses,indicates that the effector PaWB-SAP54 interacts directly with Paulownia PfSPLa,which in turn causes the degradation of PfSPLa by the ubiquitin-mediated pathway and leads to the formation of witches'*** together,these results provide significant insights into the biology of paulownias and the regulatory mechanism for the formation of PaWB.

关键词： Paulownia fortunei phytoplasma crassulacean acid metabolism Paulownia witches'broom PaWB photosynthesis

土壤Pb、Cd污染对5种植物生理指标和修复能力影响的研究

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河南师范大学学报（自然科学版） 2014年第6期42卷 86-90页

作者：赵晓改王浩高杉袁祖丽河南农业大学生命科学学院郑州450002

为了筛选出修复重金属铅(Pb)、镉(Cd)污染土壤的植物,用盆栽的方法选取白菜(Chinese Cabbage)、甘蓝(Brassica oleracea)、野菊花(Chrysanthemu mindicum)、鸡冠花(Celosia cristata L)和紫苏(Perilla frutescens)为试验材料,模拟重金属Pb、Cd污染,Pb处理浓度为0.600mg/kg,Cd处理浓度为0.60mg/kg,采用感应耦合等离子体等方法研究了Pb、Cd污染对5种植物鲜重和干重的影响,以及5种植物对Pb、Cd污染土壤的修复能力.结果表明:白菜、甘蓝和菊花在污染土壤中植物形态上呈现健康生状态,鸡冠花、紫苏处理后叶片变黄,出现轻微的萎焉状态.Pb 600mg/kg和Cd 60mg/kg均显著增加白菜、甘蓝、菊花鲜重和干重,但减少了紫苏和鸡冠花的鲜重和干重.5种植物对于Pb的吸收能力由强到弱依次为白菜、甘蓝、菊花、鸡冠花、紫苏.5种植物对Cd的吸收能力由强到弱依次为白菜、甘蓝、菊花、鸡冠花、紫苏.Pb的积累指数由大到小依次为白菜、菊花、鸡冠花、甘蓝、紫苏.Cd的积累指数由大到小依次为白菜、菊花、鸡冠花、紫苏、甘蓝.白菜在5种植物中积累指数最高,说明它对于Pb、Cd的吸收积累能力较强,对Pb、Cd污染土壤具有较强的修复能力.

关键词：植物铅镉修复能力积累指数

摩西球囊霉菌对Pb胁迫下烟草解毒效应的研究

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河南农业大学学报 2015年第2期49卷 153-157页

作者：赵晓改王浩高杉袁祖丽河南农业大学生命科学学院河南郑州450002

以烟草(Nicotiana tabacum L.)品种中烟100为材料,采用盆栽试验,研究Pb胁迫下接种与未接种摩西球囊霉菌(Glomus mosseae,GM)对烟草的形态变化、叶绿素含量、菌根侵染率、球囊霉素(GRSP)含量、Pb含量(包括土壤残留、根、烟叶和球囊霉素中... 详细信息

以烟草(Nicotiana tabacum L.)品种中烟100为材料,采用盆栽试验,研究Pb胁迫下接种与未接种摩西球囊霉菌(Glomus mosseae,GM)对烟草的形态变化、叶绿素含量、菌根侵染率、球囊霉素(GRSP)含量、Pb含量(包括土壤残留、根、烟叶和球囊霉素中)等的影响,以探讨Pb胁迫下GM对烟草的解毒效应。结果表明,接种GM后叶片变绿;叶绿素a(Cht a)和叶绿素b(Chl b)含量升高,Chl a/Chl b值显著升高;接种GM后菌根侵染率为32.72%和26.17%,显著地提高了GRSP含量;与同质量分数Pb胁迫未接种组相比,接种GM后根和土壤中残留Pb含量显著增加,而烟叶中Pb含量极显著减少,且下部叶>中部叶>上部叶。

关键词： Pb 摩西球囊霉菌烟草解毒能力

Recycling arsenic-containing bio-leaching residue after thermal treatment in cemented paste backfill:Structure modification,binder properties and environmental assessment

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International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2136-2147页

作者： Dengfeng zhao Shiyu Zhang Yingliang zhao Department of Mining Engineering Lyuliang UniversityLvliang 033000China School of Civil and Environmental Engineering University of Science and Technology BeijingBeijing 100083China School of Mining Engineering Taiyuan University of TechnologyTaiyuan 030024China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHong Kong 00852China

The substantial arsenic(As)content present in arsenic-containing bio-leaching residue(ABR)presents noteworthy environ-mental challenges attributable to its inherent instability and susceptibility to *** its elevated calcium sulfate content,ABR exhibits considerable promise for industrial *** study delved into the feasibility of utilizing ABR as a source of sulfates for producing super sulfated cement(SSC),offering an innovative binder for cemented paste backfill(CPB).Thermal treatment at varying temperatures of 150,350,600,and 800℃ was employed to modify ABR’s *** investigation encompassed the examination of phase transformations and alterations in the chemical composition of As within ***,the hydration characteristics of SSC utilizing ABR,with or without thermal treatment,were studied,encompassing reaction kinetics,setting time,strength development,and *** findings revealed that thermal treatment changed the calcium sulfate structure in ABR,consequently impacting the resultant sample ***,calcination at 600℃ demonstrated optimal modification effects on both early and long-term strength *** enhanced performance can be attributed to the augmented formation of reaction products and a densified ***,the thermal treatment elicited modifications in the chemical As fractions within ABR,with limited impact on the As immobilization capacity of the prepared binders.

关键词： cemented paste backfill bio-leaching residue arsenic immobilization binder hydration calcination

Automatic modeling algorithm of stochastic error for inertial sensors

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Control Theory and Technology 2024年第1期22卷 81-91页

作者： Luodi zhao Long zhao School of Automation Science and Electrical Engineering Beihang UniversityBeijing100191China Digital Navigation Center Beihang UniversityBeijing100191China Science and Technology on Aircraft Control Laboratory Beihang UniversityBeijing100191China

This paper proposes an automatic algorithm to determine the properties of stochastic processes and their parameters for inertial error. The proposed approach is based on a recently developed method called the generalized method of wavelet moments (GMWM), whose estimator was proven to be consistent and asymptotically normally distributed. This algorithm is suitable mainly (but not only) for the combination of several stochastic processes, where the model identification and parameter estimation are quite difficult for the traditional methods, such as the Allan variance and the power spectral density analysis. This algorithm further explores the complete stochastic error models and the candidate model ranking criterion to realize automatic model identification and determination. The best model is selected by making the trade-off between the model accuracy and the model complexity. The validation of this approach is verified by practical examples of model selection for MEMS-IMUs (micro-electro-mechanical system inertial measurement units) in varying dynamic conditions.

关键词： GMWM Stochastic process Inertial sensor Sensor calibration Error model Allan variance

Meeting the challenges of invasive alien species

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National Science Review 2024年第3期11卷 296-298页

作者： Weijie zhao NSR news

The Xinjiang Uygur Autonomous Region of China is famous for its tomato production. Abundant sunshine, large day–night temperature difference and the abundant irrigation by snowmelt from the Tianshan Mountains produce...

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Ling-Ling Chen: RNA has its own features;don't study it as a protein

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National Science Review 2024年第2期11卷 301-305页

作者： Weijie zhao NSR

Non-coding RNA(ncRNA) has been a very active research area over the past 30 years. From small nc RNA – the discovery of RNA interference won the lead researchers the Nobel Prize, to long ncRNA(lncRNA), which has attracted much attention in recent years, various nc RNAs participate in all kinds of biological processes and show a variety of biomedical application prospects.

关键词： RNA

Giant Flexoelectric Effect in Snapping Surfaces Enhanced by Graded Stiffness

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Acta Mechanica Solida Sinica 2024年第4期37卷 528-540页

作者： Chuo zhao Department of Aeronautics Imperial College LondonSouth Kensington CampusLondonSW72AZUK

Flexoelectricity is present in nonuniformly deformed dielectric materials and has size-dependent properties, making it useful for microelectromechanical systems. Flexoelectricity is small compared to piezoelectricity;therefore, producing a large-scale flexoelectric effect is of great interest. In this paper, we explore a way to enhance the flexoelectric effect by utilizing the snap-through instability and a stiffness gradient present along the length of a curved dielectric plate. To analyze the effect of stiffness profiles on the plate, we employ numerical parameter continuation. Our analysis reveals a nonlinear relationship between the effective electromechanical coupling coefficient and the gradient of Young’s modulus. Moreover, we demonstrate that the quadratic profile is more advantageous than the linear profile. For a dielectric plate with a quadratic profile and a modulus gradient of − 0.9, the effective coefficient can reach as high as 15.74 pC/N, which is over three times the conventional coupling coefficient of piezoelectric material. This paper contributes to our understanding of the amplification of flexoelectric effects by harnessing snapping surfaces and stiffness gradient design.

关键词： Functionally graded material Flexoelectricity Numerical continuation Snap-through instability