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Malvastrum yellow vein virus,a new Begomovirus species associated with satellite DNA molecule

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Chinese Science Bulletin 2003年第20期48卷 2205-2209页

作者： ZHOUXuepinq xieyan PENGYan ZHANGZhongkai InstituteofBiotechnology ZhejiangUniversityHangzhou310029China YunnanBiotechnologyResearchInstitute YunnanAcademyofAgriculturalSciencesKunming650223China

Virus isolate Y47 was obtained from Malvastrum coromandelianum showing yellow vein symptom in Honghe, Yunnan Province. The complete nucleotide sequence of DNA-A was determined, it contains 2731 nucleotides, having typical genomic organization of a begomovirus, encoding 6 ORFs with 2 ORFs [AV1(CP) and AV2] in virion- sense DNA and 4 ORFs (AC1—AC4) in complementary- sense DNA. Comparisons show that the total DNA-A of Y47 has the highest sequence identity (77%) with that of Okra yellow vein mosaic virus-[201] (AJ002451), while less than 76% identities are found when compared with other begomoviruses. The molecular data show that virus isolate Y47 is a distinct begomovirus species, for which the name Malvastrum yellow vein virus is proposed. Satellite DNA molecule (Y47b) was found to be associated with Y47 using the primers (beta01 and beta02) specific for DNAb. Y47b consists of 1348 nucleotides, with a functional ORF (C1) in complementary-sense DNA. Y47b has 62%—67% sequence identity with DNAb molecule associated with Cotton leaf curl Multan virus or Cotton leaf curl Rajasthan virus, while lower than 46% sequence identities are found when compared with other reported DNAb molecules. Relationship dendrograms show that DNAb molecules are co-evolved with their help begomoviruses.

关键词：植物病毒赛葵黄脉病毒卫星DNA 核苷酸序列测定寄主植物

Resonance-Enhanced Multiphoton Ionization Combined with Time-of-Flight MS for Study on Dehydro-aromatization of Methane over Mo/HZSM-5

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催化学报 2003年第4期24卷 241-242页

作者： WANGBingxing xieyan WANGLi baijILING HEGuozhong ChemistryDepartment LiaoningNormalUniversityDalian116029LiaoningChina StateKeyLaboratoryofMolecularReactionDynamics DalianInstituteofChemicalPhysicsTheChineseAcademyofSciencesDalian116023LiaoningChina

Time-resolved detection, which is not possible with conventional GC, MS, or GC-MS, is of particular importance in monitoring the products of catalytic reactions. Resonance-enhanced multipho-ton ionization (REMPI) can ionize target molecules with high selectivity and sensitivity, and has been widely applied to the study of structure and energy-transfer dynamics of atoms, molecules and free radi-cals[l'2]. Time-of-flight (TOP) MS not only has high sensitivity, but also has good mass resolution and fast time-response . Typically, a whole TOF mass spectrum can be completed in several ten microseconds. InTOFMS, a three-stage microchannel plate (MCP) detector is used to detect the ion signal. The gain is 108~109. Therefore, it is of interest to monitor a catalytic reaction by combining REMPI with TOFMS. The benefit of using REM-Pf-TOFMS is the high sensitivity and the shielding against possible interference. In this paper, we investigated in real-time the dehydro-aromatization of methane by resonance-enhanced 2-photon ionization (RE2PI) combined with TOFMS.

关键词： Mo/HZSM-5 多光子电离甲烷飞行时间质谱脱氢芳构化反应分子筛负载钼催化剂

Effects of melt percolation on the Re-Os systematics of continental mantle lithosphere: A case study of spinel peridotite xenoliths from Heilongjiang, NE China

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Science China Earth Sciences 2012年第6期55卷 949-965页

作者： YU SongYue SONG xieyan XU YiGang CHEN LieMeng LI Jie State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Seiences Guiyang 550002 China Key Laboratory of lsotope Geochronology and Geochemistry Guangzhou Institute ~Geochemistry Chinese Academy of Sciences Guangzhou 510640 China

Os isotope ratios of mantle peridotites have been considered to be largely immune to recent melt-rock interaction. However, Os isotope ratios and PGE (Platinum group elements) concentrations of the Yong'an xenoliths have been significantly modified by melt percolation, and are not suitable for determining the formation age of lithosphere mantle in Yong'an. In this study, the Yong'an spinel peridotite xenoliths are divided into two groups: N-Type and E-Type. The N-Type group including cpx (clinopyroxene)-poor lherzolite and harzburgite, shows a large variation of Cr#(sp) (13.2-48) and sulfur contents (from 171 ppm to below detection limit), whereas the E-Type peridotites are mainly refractory harzburgites and are characterized by high Cr#(sp) (35.3-42.2) and overall low sulfur contents (below 51 ppm). Both types show similar major and REE (rare earth element) patterns. Furthermore, the N-Type peridotites display a restricted range of iridium-group PGE (IPGE), Os/Ir and Ru/Ir ratios (Os/Ir = 0.64-1.12, Ru/Ir = 1.52-1.79) and variable palladium-group PGE (PPGE) contents (3.4-14.9 ppb), whereas the E-Type peridotites show a large variation of Os/Ir and Ru/Ir ratios (Os/Ir = 0.33-0.84, Ru/Ir = 0.94-1.6), and a restricted range of PPGE (4.3-6.9 ppb). 187Os/188Os ratios of E-Type peridotites are higher than those of N-Type peridotites at comparable fertility levels. These results suggest that N-Type peridotites may have been overprinted by metasomatism via small melt fractions, in which the percolation of the volatile-rich, small melt fractions only resulted in LILE (large ion lithophile element) enrichment of clinopyroxene, and their whole rock PGE contents and Re-Os isotope values were little changed. Moreover, E-Type peridotites may have been modified by melt-rock reaction involving relatively large melt fractions, which may result in the formation of secondary cpx and olivine and the removal of IPGE-bearing minerals such as Ru-Os-(Ir) alloys or laurite, followed by pre

关键词：大陆岩石圈地幔橄榄岩包体尖晶石熔体渗流 Re-Os同位素黑龙江系统学

Study of oxygen fugacity during magma evolution and ore genesis in the Hongge mafic–ultramafic intrusion, the Panxi region, SW China

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Acta Geochimica 2016年第1期35卷 25-42页

作者： Mingyang Liao Yan Tao xieyan Song Yubang Li Feng Xiong State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of SciencesGuiyang 550002 China University of Chinese Academy of Sciences Beijing 100049China

Economic concentrations of Fe–Ti oxides occurring as massive layers in the middle and upper parts of the Hongge intrusion are different from other layered intrusions(Panzhihua and Baima) in the Emeishan large igneous province, SW China. This paper reports on the new mineral compositions of magnetite and ilmenite for selected cumulate rocks and clinopyroxene and plagioclase for basalts. We use these data to estimate the oxidation state of parental magmas and during ore formation to constrain the factors leading to the abundant accumulation of Fe–Ti oxides involved with the Hongge layered intrusion. The results show that the oxygen fugacities of parental magma are in the range of FMQ-1.56 to FMQ+0.14, and the oxygen fugacities during the ore formation of the Fe–Ti oxides located in the lower olivine clinopyroxenite zone(LOZ) and the middle clinopyroxenite zone(MCZ) of the Hongge intrusion are in the range of FMQ-1.29 to FMQ-0.2 and FMQ-0.49 to FMQ+0.82, *** MELTS model demonstrates that, as the oxygen fugacity increases from the FMQ-1 to FMQ+1, the proportion of crystallization magnetite increases from 11 % to 16 % and the crystallization temperature of the Fe–Ti oxides advances from 1134 to 1164 °C. The moderate oxygen fugacities for the Hongge MCZ indicate that the oxygen fugacity was not the only factor affecting the crystallization of Fe–Ti oxides. We speculated that theinitial anhydrous magma that arrived at the Hongge shallow magma chamber became hydrous by attracting the H_2O of the strata. In combination with increasing oxygen fugacities from the LOZ(FMQ-1.29 to FMQ-0.2) to the MCZ(FMQ-0.49 to FMQ+0.82), these two factors probably account for the large-scale Fe–Ti oxide ore layers in the MCZ of the Hongge intrusion.

关键词：超镁铁质岩浆演化成矿过程中国西南氧逸度红格岩体攀西地区

Magmatic Ni-Cu-(PGE) deposits in magma plumbing systems:Features,formation and exploration

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Geoscience Frontiers 2011年第3期2卷 375-384页

作者： xieyan Song Yushan Wang Liemeng Chen State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guanshui Road 46 Guiyang 550002 China jinchuan Group Limited Jinchuan Road 98 Jinchang Gansu 737104 China

The three most crucial factors for the formation of large and super-large magmatic sulfide deposits are：（1） a large volume of mantle-derived mafic-ultramafic magmas that participated in the formation of the deposits; （2） fractional crystallization and crustal contamination, particularly the input of sulfur from crustal rocks, resulting in sulfide immiscibility and segregation; and （3） the timing of sulfide concentration in the intrusion. The super-large magmatic Ni-Cu sulfide deposits around the world have been found in small mafic-ultramafic intrusions, except for the Sudbury deposit. Studies in the past decade indicated that the intrusions hosting large and super-large magmatic sulfide deposits occur in magma conduits, such as those in China, including Jinchuan （Gansu）, Yangliuping （Sichuan）, Kalatongke （Xinjiang）, and Hongqiling （Jilin）. Magma conduits as open magma systems provide a perfect environment for extensive concentration of immiscible sulfide melts, which have been found to occur along deep regional faults. The origin of many mantle-derived magmas is closely associated with mantle plumes, intracontinental rifts, or post-collisional extension. Although it has been confirmed that sulfide immiscibility results from crustal contamination, grades of sulfide ores are also related to the nature of the parental magmas, the ratio between silicate magma and immiscible sulfide melt, the reaction between the sulfide melts and newly injected silicate magmas, and fractionation of the sulfide melt. The field relationships of the ore-bearing intrusion and the sulfide ore body are controlled by the geological features of the wall rocks. In this paper, we attempt to demonstrate the general characteristics, formation mechanism,tectonic settings, and indicators of magmatic sulfide deposits occurring in magmatic conduits which would provide guidelines for further exploration.

关键词： Magmatic Ni-Cu sulfidedeposit Magma conduit Sulfide immiscibility Tectonic extension China

Study on the evolution of ore-formation fluids for Au-Sb ore deposits and the mechanism of Au-Sb paragenesis and differentiation in the southwestern part of Guizhou Province, China

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Chinese Journal Of Geochemistry 2013年第1期32卷 56-68页

作者： WANG Zepeng XIA Yong SONG xieyan LIU Jianzhong YANG Chengfu YAN Baowen State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences Geological Party 105 Guizhou Provincial Bureau of Geology and Mineral Exploration and Development College of Resources and Environmental Engineering Guizhou University

Ore deposits (occurrences) of Au, As, Sb, Hg, etc. distributed in Southwest Guizhou constitute the important portion of the low-temperature metallogenic domain covering a large area in Southwest China, with the Carlin-type Au and Sb deposits being the most typical ones. In this paper the Au and Sb ore deposits are taken as the objects of study. Through the petrographic analysis, microthermomitric measurement and Raman spectrophic analysis of fluid inclusions in gangue minerals and research on the S and C isotopic compositions in the gold ore deposits we can reveal the sources of ore-forming materials and ore-forming fluids and the rules of ore fluid evolution. Ore deposits of Au, Sb, etc. are regionally classified as the products of ore fluid evolution, and their ore-forming materials and ore fluids were probably derived mainly from the deep interior of the Earth. Fluid inclusion studies have shown that the temperatures of Au mineralization are within the range of 170-361℃,the salinities are 0.35 wt%-8 wt% NaCl eq.; the temperatures of Sb mineralization are 129.4-214℃ and the salinities are 0.18 wt%- 3.23 wt% NaCl eq.; the ore-forming fluid temperatures and salinities tend to decrease progressively. In the early stage (Au metallogenic stage) the ore-forming fluids contained large amounts of volatile components such as CO2, CH4, N2 and H2S, belonging to the H2O-CO2-NaCl fluid system; in the late stage (Sb metallogenic stage) the ore-forming fluids belong to the Sb-bearing H2O-NaCl system. The primitive ore-forming fluids may have experienced at least two processes of immiscibility: (1) when early ore-bearing hydrothermal solutions passed through rock strata of larger porosity or fault broken zones, CO2, CH4, N2 would escape from them, followed by the release of pressure, resulting in pressure release and boiling of primitive homogenous fluids, thereafter giving rise to their phase separation, thus leading to Au unloading and mineralization; and (2) in the late stage

关键词：成矿流体演化中国西南地区金锑矿床分化共生贵州省西南部流体温度

Generation of Permian Ni-Cu Sulfide Deposits in the East Tianshan(NW China) by Syn-collisional Mantle Derived Magmatism

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Acta Geologica Sinica(English Edition) 2015年第A2期89卷 87-88页

作者： SONG xieyan CHEN Liemeng DENG Yufeng XIE Wei State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of Sciences

A series of Ni-Cu sulfide deposits hosted in Early Permian mafic-ultramafic complexes occur along the -500 km long linear Huangshan-Jingerquan belt in the East Tianshan at the southern margin of the Central Asian Orogenic Belt （Fig. 1）（Zhou et al., 2004; Song and Li,2009; Song et al., 2011 ; Qin et al., 2011 ; Deng et al., 2014）.

关键词： RESEARCH Nickel Copper Ultrabasic rocks Sulfides Mines & mineral resources CHINA

Platinum-group element(PGE)geochemistry of the Emeishan basalts in the Pan-Xi area,SW China

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Chinese Science Bulletin 2006年第7期51卷 845-854页

作者： ZHONG Hong ZHU Weiguang QI Liang ZHOU Meifu SONG xieyan ZHANG Yi Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Sciences Guiyang 550002 China Department of Earth Sciences University of Hong Kong Hong Kong China Geological Team 106 Bureau of Geology and Mineral Resources of Sichuan Province Chengdu 611130 China

在 Pan-Xi 区域的 Longzhoushan 和 Ertan 暗岩被部分融化的相对低的度产生(<7% ，在哪个期间当磅和 Pd 是不兼容的时，红外， Ru，和 Rh 是兼容的。大多数这些样品原始披风比那些有高 PGE 集中和大部分 higherPd/lr 和 Cu/Pd 比率。硫... 详细信息

在 Pan-Xi 区域的 Longzhoushan 和 Ertan 暗岩被部分融化的相对低的度产生(<7% ，在哪个期间当磅和 Pd 是不兼容的时，红外， Ru，和 Rh 是兼容的。大多数这些样品原始披风比那些有高 PGE 集中和大部分 higherPd/lr 和 Cu/Pd 比率。硫化物的小数量(~0.007%) 在部分融化期间留在披风来源，而岩浆的部分到达了硫化物浸透和分离 PGE 富有的硫化物(~0.020%-0.033 百分比) 在期间上升时期。锇，红外，和磅能形成在部分结晶化期间在铬铁矿或硫化物招待的金属性的合金处理的铂组，导致磅和 Pd 内容的去耦和红外内容的可观的变化。硫化物从玄武岩的岩浆分离了可以在岩浆水管附近在 themafic-ultramafic 侵入为 Cu-Ni-PGE 存款(矿化作用) 的形成提供重要材料来源。

关键词：铂族元素地球化学玄武岩硫化物攀西地区

Transcriptome Analysis Provides New Insights into Host Response to Hepatopancreatic Necrosis Disease in the Black Tiger Shrimp Penaeus monodon

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Journal of Ocean University of China 2021年第5期20卷 1183-1194页

作者： ZHAO Jichen CHEN xieyan HE Zihao CHEN Guoliang LIN Zhaojian LIU Yongkui SUN Chengbo WANG Wei College of Fisheries Guangdong Ocean UniversityZhanjiang 524088China Guangdong Haimao Investment Co. Ltd.Zhanjiang 524088China

The hepatopancreatic necrosis disease(HPND)is a common shrimp *** of the black tiger shrimp Penaeus monodon has suffered with the frequent outbreak of *** the molecular mechanisms of host response to HPND is of pivotal importance for improving its farming *** this study,the RNA-Seq platform was utilized to investigate transcriptomic changes of the hepatopancreas in pond-cultured *** with HPND symptoms.A total of 62071 genes with an average length of 953 bp were obtained,and a lot of simple sequence repeat(SSR)loci related to these genes were ***,5204 differentially expressed genes(DEGs)were detected between healthy shrimp and HPND shrimp,with 3399 genes upregulated and 1,805 genes *** genes had a wide range of biological functions,and several well-known immunerelated genes including integrin alpha 5,integrin beta 1,C type lectin and catalase were among the *** signaling pathways including the extracellular matrix(ECM)receptor interaction,phagosome and lysosome pathways were significantly upregulated in HPND-infected shrimps,indicating their involvement in the immune responses of shrimp against *** data obtained in this study offers new insights into the molecular mechanisms of shrimp host response to HPND disease,and provides a resource for molecular marker development and genetic breeding studies of ***.

关键词： Penaeus monodon shrimp HPND transcriptome hepatopancreas