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Two thin middle-crust low-velocity zones imaged in the Chuan-Dian region of southeastern Tibetan Plateau and their tectonic implications

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Science China Earth Sciences 2024年第5期67卷 1675-1686页

作者： Long LI Xin WANG guangbing HOU Yuan LING Yinshuang AI Key Laboratory of Earth and Planetary Physics Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China College of Earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China Innovation Academy for Earth Science Chinese Academy of SciencesBeijing 100029China

Intracrustal low-velocity zones(LVZs)indicate a mechanically weak crust and are widely observed in the southeast margin of the Tibetan ***,their spatial distributions and formation mechanisms remain *** investigate their distribution and detailed morphology of the LVZs in the southeastern Tibetan Plateau,here we used teleseismic events and continuous waveform data recorded by 40 broadband seismic stations newly deployed in the Sichuan-Yunnan region from December 2018 to October 2020.A total of 12,924 high-quality P-wave receiver functions and 5–40 s fundamental Rayleigh surface wave phase velocity dispersion curves from ambient noise cross-correlation functions were *** Swave velocity model at a depth interval of 0–100 km in the study area was inverted by using the trans-dimensional Markov chain Monte Carlo strategy to jointly invert the complementary data of the receiver function waveform and Rayleigh surface wave phase velocity *** results show that there are two separate LVZs(~3.5 km/s)surrounding the rigid Daliangshan subblock at crustal depths of approximately 30–40 km,providing new constraints on the geometry of the LVZs in our study *** two LVZs obtained in this study may represent the middle crustal flow channels,through which the material in the center of the Tibetan Plateau extrudes to its southeast *** by the rigid Sichuan Basin and the spindle-like Daliangshan subblock,the material continues to flow southward through the mechanically weak middle crustal channels surrounding the Daliangshan *** addition,the existence of thin LVZs in the middle crust plays an important role in understanding the decoupling between the upper and lower crust in the study *** also provides new constraint on the complex tectonic deformation process of the southeastern margin of the Tibetan Plateau caused by the collision and compression of the Indian and the Eurasian plates.

关键词： Southeastern Tibetan Plateau Joint inversion Intracrustal low-velocity zone Mid-crustal channel flow

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TDC gene in Aegilops varabilis NO.1 plays an important role in the resistance to cereal cyst nematode

TDC gene in Aegilops varabilis NO.1 plays an important role ...

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第八届全国小麦基因组学及分子育种大会

作者： Qiulan Huang Haili Zhang Lin Li Minghui Zheng Hai Long guangbing deng Maoqun Yu Chengdu Institute of Biology Chinese Academy of Sciences College of Life Science Sichuan University School of Basic Medicine Zunyi medical University

The cereal cyst nematode(CCN) is worldwide and caused the yield losses of wheat ranging from 10%to 40%.For the short of resistance resource in wheat,it’s in urgent need of exploring and breeding new resistance variety from sibling *** the Transcriptome sequence to the Aegilops varabilis NO.1 infected by cereal cyst nematode,the transcriptome data indicates Phenylalanine metabolism and Iso-quinoline alkaloid metabolism plays an important role in the defense responses to the early nematode infectioa The candidate TDC(tryptophan decarboxylase) gene is the key gene of these two metabolic *** VIGS technology to silence TDC1 gene of the Aegilops varabilis NO.1,second stage juveniles(CCN) were used to infect silenced ***-time PCR data indicated that the expression of this gene already reduce 60%,is significantly lower than control group;CCN infection is more than the control ***,expression vectors containing AeVTDC1 was constructed and used for transformation of tobacco(Nicotiana tabacum) by *** positive plants were selected by PCR with specific primers and southern *** order to test resistance to root-knot nematode,the transgenic and wild-type tobaccos were cultivated in soil with root-knot *** analysis was used to measure the level of tryptamine in roots of AeVTDC1 transgenic *** in 6 AeVTDC1 transgenic tobaccos have been obtained through PCR and southern blot *** containing AeVTDC1 showed more resistant to root knot nematodes than wild ***-MS analysis of tryptamine was operated in transgenic and wild-type tobaccos,and the results showed that the level of tryptamine in transgenic tobaccos was much higher than that of wild-type *** preliminary results indicated that TDC plays a positive role in resistance to cereal cyst nematode and root knot nematodes in Aegilops varabilis NO.1.

关键词： Aegilops varabilis AeVTDC1 cereal cyst nematodes root knot nematodes

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Research on Feature Matching Optimization Algorithm for Automotive Panoramic Surround View System

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Computer Systems Science & Engineering 2024年第5期48卷 1329-1348页

作者： guangbing Xiao Ruijie Gu Ning Sun Yong Zhang College of Automobile and Traffic Engineering Nanjing Forestry UniversityNanjing210037China

In response to the challenges posed by insufficient real-time performance and suboptimal matching accuracy of traditional feature matching algorithms within automotive panoramic surround view systems,this paper has proposed a high-performance dimension reduction parallel matching algorithm that integrates Principal Component Analysis(PCA)and Dual-Heap Filtering(DHF).The algorithm employs PCA to map the feature points into the lower-dimensional space and employs the square of Euclidean distance for feature matching,which significantly reduces computational *** ensure the accuracy of feature matching,the algorithm utilizes Dual-Heap Filtering to filter and refine matched point *** further enhance matching speed and make optimal use of computational resources,the algorithm introduces a multi-core parallel matching strategy,greatly elevating the efficiency of feature *** to Scale-Invariant Feature Transform(SIFT)and Speeded Up Robust Features(SURF),the proposed algorithm reduces matching time by 77%to 80%and concurrently enhances matching accuracy by 5%to 15%.Experimental results demonstrate that the proposed algorithmexhibits outstanding real-time matching performance and accuracy,effectivelymeeting the feature-matching requirements of automotive panoramic surround view systems.

关键词： Featurematching automotive panoramic surround view system principal component analysis euclidean distance dual-heap filtering

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Tryptophan decarboxylaseplays a positive role in the resistance to cereal cyst nematode in Aegilops varabilis No.1

Tryptophan decarboxylaseplays a positive role in the resista...

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中国植物病理学会2017年学术年会

作者： Huang Qiulan Li Lin Zheng Minghui Long Hai deng guangbing Zhang Haili Yu Maoqun Chengdu Instituteof Biology Chinese Academy of Sciences College of Life Science Sichuan University School of Basic Medicine Zunyi Medical University

Cereal cyst nematode（CCN） is a vital rootinfected pathogen in *** yield losses caused by CCN reached 10%to 40%.Aegilops varabilis NO.1 is relative of wheat and resistant to CCN and root-knot nematode（RKN）.RNA-seq analysis of the interaction between Aegilops varabilis NO.1 and second juvenile stage of CCN indicates alkaloid metabolism plays an important role in the defense responses to early *** decarboxylase（TDC） gene is the key gene of the metabolic *** of TDC1 and pretreatment with its activity inhibitor both increased the infection number of CCN J2 in the root of Aegilops varabilis ***,AeVTDC1 transgenic tobacco（Nicotiana tabacum） overexpression AeVTDC1 was obtained and their resistance to root-knot nematode was *** assay showed that the number of root-knot in transgenic plants was significant less than that in wild-type *** downstream second metabolites of alkaloid metabolism,tryptamine and serotonin,their contents in roots were also measured,and UPLC-MS analysis revealed that the tryptamine in AeVTDC1 transgenic tobacco was much more than that in wild-type plants,whereas the serotonin was less than that in wild-type *** preliminary results indicated that AeVTDC1 plays a positive role in resistance tocereal cyst nematode and root knot nematodes in Aegilops varabilis No.1.

关键词： AeVTDC1 Cereal cyst nematodes Root-knot nematode Aegilops varabilis NO 1

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Tryptophan decarboxylase plays a positive role in the resistance to cereal cyst nematode in Aegilops varabilis NO.1

Tryptophan decarboxylase plays a positive role in the resist...

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第八届全国小麦基因组学及分子育种大会

作者： Qiulan Huang Lin Li Minghui Zheng Hai Long guangbing deng Haili Zhang Maoqun Yu Chengdu Institute of Biology Chinese Academy of Sciences College of Life Science Sichuan University School of Basic Medicine Zunyi medical University

Cereal cyst nematode(CCN) is a vital root infected pathogen in *** yield losses caused by CCN reached 10%to 40%.Aegilops varabilis NO.1 is relative of wheat and resistant to CCN and root-knot nematode(RKN).RNA-seq analysis of the interaction between *** NO.1 and second juvenile stage of CCN indicates alkaloid metabolism plays an important role in the defense responses to early infection Tryptophan decarboxylase(TDC) gene is the key gene of the metabolic *** of TDC1 and pretreatment with its activity inhibitor both increased the infection number of CCN J2 in the root of *** ***,AeVTDC1 transgenic tobacco(Nicotiana tabacum) overexpression AeVTDC1 was obtained and their resistance to root-knot nematode was *** assay showed that the number of root-knot in transgenic plants was significantly less than that in wild-type *** downstream second metabolites of alkaloid metabolism,tryptamine and serotonin,their contents in roots were also measured,and UPLC-MS analysis revealed that the tryptamine in AeVTDC1 transgenic tobacco was much more than that in wild-type plants,whereas the serotonin was less than that in wild-type *** preliminary results indicated that AeVTDC1 plays a positive role in resistance to cereal cyst nematode and root knot nematodes in *** NO.1.

关键词： AeVTDC1 Cereal cyst nematodes Root-knot nematode Aegilops varabilis NO.1

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Organization and divergence of Amy1 loci encoding high isoelectric point a-amylase multigene family in bread wheat(Triticum aestivum L.) and barley(Hordeum vulgare L.)

Organization and divergence of Amy1 loci encoding high isoel...

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第八届全国小麦基因组学及分子育种大会

作者： Liangliang Ju guangbing deng Junjun Liang Haili Zhang Qiao Li Zhifen Pan Maoqun Yu Hai Long Chengdu Institute of Biology Chinese Academy of Sciences University of Chinese Academy of Sciences

High isoelectric point a-Amy1 ase genes(Amy1) play major roles during seed germination in cereal crops,and result in unacceptable high residual a-Amy1 ase activities in ripe wheat *** the present work,comprehensive analyses of Amy1 family of wheat and barley were *** using recently unlocked genomic resources and experimental validation,the exact copy numbers and chromosomal locations in wheat and barley were *** and synteny analyses revealed tandem gene duplication and chromosomal rearrangement leading to separation of Amy1 into two distinct loci,Amy 1θ and Amy1λ.The divergence of Amy1λ from Amy 16 occurred at approximately 31.2-42.9 million years *** Amy1λ amino acids,Argand Asn,were under adaptive selection pressures(P> 0.95).The predicted 3 D structural alteration caused by a single amino acid substitution(Asp233 Asn) in the SBS1 region,and significantly divergent expression patterns during seed germination and grain development revealed functional divergence between Amy1θ and Amy1λ *** study provides insights into evolution of Amy1 multiple gene family in *** discrimination of differentially effective copies will help to better understand the mechanism underlying the dynamic changes of a-Amy1 ase activity during germination or seed maturation,and provide guidance to manipulation of a-Amy1 ase activity during wheat and barley breeding for better yield and processing properties.

关键词： Amy1 tandem duplication chromosomal rearrangement positive selection expression divergence

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Boron promoted Fe^(3+)/peracetic acid process for sulfamethazine degradation:Efficiency,role of boron,and identification of the reactive species

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Journal of Environmental Sciences 2024年第1期135卷 72-85页

作者： Yanhong Zhang guangbing Liu Yuzhu Xue Lichun Fu Yawei Qian Minhui Hou Xiang Li Chen Ling Ying Zhang Yuwei Pan Jiangsu Provincial Key Laboratory of Environmental Engineering Jiangsu Provincial Academy of Environmental ScienceNanjing 210036China College of Biology and the Environment Nanjing Forestry UniversityNanjing 210037China School of Iron and Steel Soochow UniversitySuzhou 215000China School of the Environment Nanjing UniversityNanjing 210023China SUMEC Complete Equipment&Engineering Co. LTD.Nanjing 211500China Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China School of Environment Key Laboratory for Yellow River and Huai River Water Environmental and Pollution ControlMinistry of EducationHenan Key Laboratory for Environmental Pollution ControlHenan Normal UniversityXinxiang 453007China

In this work,boron(B)was used to promote Fe^(3+)/peracetic acid(Fe^(3+)/PAA)for the degradation of sulfamethazine(SMT).An SMT degradation efficiency of 9.1%was observed in the Fe^(3+)/PAA system over 60 min,which was significantly increased to 99.3%in the B/Fe^(3+)/PAA system over 10 *** B/Fe^(3+)/PAA process also exhibited superior resistance to natural substances,excellent adaptability to different harmful substances,and good removal of antibiotics in natural fresh water *** mechanism of action of boron for Fe^(3+)reduction was determined using scanning electron microscopy(SEM),X-ray photoelectron spectroscopy(XPS),Fourier transform infrared(FT-IR)spectroscopy,density functional theory(DFT)calculations,and electrochemical *** dominant role of^(·)OH was confirmed using quenching experiments,electron spin resonance(EPR)spectroscopy,and quantitative *** radicals(R-O^(·))and Fe(IV)also significantly contribute to the removal of *** calculations on the reaction between Fe^(2+)and the PAA were conducted to further determine the contribution from ^(·)OH,R-O^(·),and Fe(IV)from the perspective of thermodynamics and the reaction *** boron dosages,Fe^(3+)dosages,and initial pH values were also investigated in the B/Fe^(3+)/PAA system to study their effect of SMT removal and the production of the reactive ***(IV)production determined the k_(R-O·+Fe(IV))value suggesting that Fe(IV)may play a more important role than R-O^(·).A comparison of the results with other processes has also proved that the procedure described in this study(B/Fe^(3+)/PAA)is an effective method for the degradation of antibiotics.

关键词： Boron Peracetic acid Sulfamethazine DFT Reactive species

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小麦高分子量麦谷蛋白亚基组成及其对小麦烘烤品质的影响

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应用与环境生物学报 2006年第2期12卷 155-159页

作者：潘志芬邓光兵刘毅吴芳余懋群中国科学院成都生物研究所

采用SDS-PAGE方法分析了386份CIMMYT小麦材料的高分子量麦谷蛋白亚基(HMW-GS)组成,并测定了其微量SDS沉降值,同时评估了各亚基对小麦烘烤品质的贡献.电泳结果发现,供试材料所包含的亚基种类和组合非常丰富,共有14条不同亚基和25种不同... 详细信息

采用SDS-PAGE方法分析了386份CIMMYT小麦材料的高分子量麦谷蛋白亚基(HMW-GS)组成,并测定了其微量SDS沉降值,同时评估了各亚基对小麦烘烤品质的贡献.电泳结果发现,供试材料所包含的亚基种类和组合非常丰富,共有14条不同亚基和25种不同的亚基组合.A组染色体编码的HMW-GS有Null、Ax1和Ax2,其频率分别为79.50%、16.32%和4.15%;B组染色体编码的亚基按频率由高到低排序为Bx7、Bx7+By9、Bx7+By8、By22、Bx20、Bx14+By15、Bx6+By8,它们的频率分别为42.75%、21.24%、17.36%、13.47%、3.89%、1.04%、0.26%;D组染色体编码的亚基为Dx5+Dy10、Dx2+Dy12、Dx5+Dy12、Dx2+Dy10,其中Dx5+Dy10和Dx2+Dy12亚基为主要类型,频率分别为76.42%和22.00%,含有Dx5+Dy12或Dx2+Dy10亚基的材料非常少,含有Dx5+Dy12亚基的仅有4份,含有Dx2+Dy10亚基的仅有2份,但它们用于研究D染色体编码的等位亚基的遗传和对小麦烘烤品质的贡献将具有重要作用.亚基组合1(Null+5+10+7)出现的频率最高,为34.20%;其次是组合3(Null+5+10+7+9),其频率为11.40%;组合16～25仅分布在1～2份材料中.各亚基对沉降值的影响结果显示,各位点编码的等位基因变异对小麦烘烤品质影响显著.Glu-A1位点上的1亚基的作用显著大于2和Null亚基,2与Null亚基间的差异不显著.Glu-B1位点上的7+8和22亚基显著优于7+9,而7、20和7+9亚基间有差异,但差异不显著,同样,7+8和22亚基间有差异,但差异不显著.5+10和2+12亚基对品质贡献与前人研究一致,5+10亚基显著优于2+12亚基.自然界十分稀少的材料———拥有2+10和5+12亚基的材料的收集对评价Glu-D1位点单个亚基或亚基联合对小麦品质的影响具有十分重要的意义.

关键词：小麦高分子量麦谷蛋白亚基烘烤品质 SDS沉降值

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水稻花药特异表达启动子的克隆与活性检测

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应用与环境生物学报 2008年第3期14卷 328-331页

作者：张金辉龙海邓光兵潘志芬余懋群中国科学院成都生物研究所成都610041 中国科学院研究生院北京100049

植物雄性器官特异表达启动子的克隆是作物杂种优势利用分子育种的基础.根据水稻花药特异表达RA8基因序列设计引物,从水稻(Oryza sativaL.)品种日本晴中克隆得到水稻花药特异表达基因RA8启动子Tsp2,该启动子为RA8基因翻译起始位点上游82... 详细信息

植物雄性器官特异表达启动子的克隆是作物杂种优势利用分子育种的基础.根据水稻花药特异表达RA8基因序列设计引物,从水稻(Oryza sativaL.)品种日本晴中克隆得到水稻花药特异表达基因RA8启动子Tsp2,该启动子为RA8基因翻译起始位点上游828bp的片段,具有启动子特征序列TATA盒TATAAATA和真核生物启动子特征序列CAAT框,与RA8启动子的核苷酸序列同源性为97%.利用该启动子与报告基因GFP构建植物表达载体p1304-rap,采用基因枪法转化烟草花药,通过GFP的瞬时表达证明该启动子具有花药特异启动子活性.

关键词：花药特异基因启动子 PCR GFP报告基因瞬时表达

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水稻花药绒毡层特异表达启动子的分离与表达载体构建

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应用与环境生物学报 2005年第4期11卷 399-403页

作者：马沁沁张金辉陈荣军邓光兵余懋群中国科学院成都生物研究所

从籼稻川75A(OryzasativaL.)黄化苗叶片中直接提取基因组总DNA.根据文献报道的水稻花药绒毡层特异启动子Osg6B序列设计引物,采用TouchdownPCR技术获得水稻花药绒毡层特异表达的启动子Tsp1,将该片段克隆在载体pMD18-TVector上转化到大肠... 详细信息

从籼稻川75A(OryzasativaL.)黄化苗叶片中直接提取基因组总DNA.根据文献报道的水稻花药绒毡层特异启动子Osg6B序列设计引物,采用TouchdownPCR技术获得水稻花药绒毡层特异表达的启动子Tsp1,将该片段克隆在载体pMD18-TVector上转化到大肠杆菌JM109,并酶切和PCR验证.序列分析发现,该片段与Osg6B启动子同源性为96%,且具有真核生物启动子的多种特征序列,表明启动子Tsp1为来源于籼稻川75A中的水稻花药绒毡层特异表达的启动子.利用该启动子对本实验室保存的质粒pIB467和pIB009进行改造,构建了一个可产生新型雄性不育系的双元植物表达载体pJH401.

关键词：绒毡层启动子 Touchdown PCR 克隆载体构建

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