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Evolutionary pattern of the regulatory network for flower development:Insights gained from a comparison of two Arabidopsis species

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Journal of Systematics and Evolution 2011年第6期49卷 528-538页

作者： 1,2 Yang LIU 1,2Chun-Ce GUO 1Gui-Xia XU 1Hong-Yan SHAN 1Hong-Zhi KONG 1(State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,chinese academy of sciences,beijing 100093,china) 2(graduate university of chinese academy of sciences,beijing 100049,china) (State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing 100093 China) (graduate university of chinese academy of sciences Beijing 100049 China)

Previous studies on Arabidopsis thaliana and other model plants have indicated that the development of a flower is controlled by a regulatory network composed of genes and the interactions among *** on the evolution of this network will therefore help understand the genetic basis that underlies flower *** this study,by reviewing the most recent published work,we added 31 genes into the previously proposed regulatory network for flower ***,the number of genes reached *** then compared the composition,structure,and evolutionary rate of these genes between *** and one of its allies,*** found that two genes(FLC and MAF2)show 1:2 and 2:2 relationships between the two species,suggesting that they have experienced independent,post-speciation *** the remaining 58 genes,35(60.3%)have diverged in exon-intron structure and,consequently,code for proteins with different sequence features and *** evolutionary analyses further revealed that,although most floral genes have evolved under strong purifying selection,some have evolved under relaxed or changed constraints,as evidenced by the elevation of nonsynonymous substitution rates and/or the presence of positively selected *** together,these results suggest that the regulatory network for flower development has evolved rather rapidly,with changes in the composition,structure,and functional constraint of genes,as well as the interactions among them,being the most important contributors.

关键词： Arabidopsis evolution flower development regulatory network.

Climatic envelope of evergreen sclerophyllous oaks and their present distribution in the eastern Himalaya and Hengduan Mountains

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Journal of Systematics and Evolution 2009年第3期47卷 183-190页

作者： 1,2Qing-Song YANG 1Wen-Yun CHEN 1,2Ke XIA 1Zhe-Kun ZHOU 1(Key Laboratory of Biodiversity and Biogeography, Kunming Institute of Botany, chinese academy of sciences, Kunming 650204, china) 2(graduate university of chinese academy of sciences, beijing 100049, china) (Key Laboratory of Biodiversity and Biogeography Kunming Institute of Botany Chinese Academy of Sciences Kunming 650204 China) (graduate university of chinese academy of sciences Beijing 100049 China)

Evergreen sclerophyllous oaks (the E.S. oaks, Quercus section Heterobalanus) are the dominant species of the local ecosystem in the eastern Himalaya and the Hengduan Mountains, southwest china. In this study, we document the climatic envelope of the seven E.S. oak species and examine the relationships between climate and their distribution. This was done using a principal components analysis (PCA) and multiple regression analysis (MRA) of nine climatic indices. The main climatic envelope of the E.S. oaks were: mean temperature of the warmest month (MTW)=12.0-19.5 ℃, warmth index (WI) = 33.2-88.9 ℃ month, annual biotemperature (BT)=-6.9--0.3 ℃, coldness index (CI)=-30.4- -10.1 ℃ month, mean temperature of the coldest month (MTC)=-3.7-3.0 ℃ and annual precipitation (AP)=701-897 mm at the lower limits; and MTW=8.3-16.1 ℃, WI=15.7-59.1 ℃ month, BT=3.6-8.9 ℃, CI=-55.4--19.3 ℃ month, MTC=8.3-16.1 ℃ and AP=610-811 mm at the upper limits. The climatic range of the E.S. oaks is wide and includes two climatic zones, the cool-temperature zone and the subpolar zone. The PCA and MRA results suggest that the thermal climate plays a major role and precipitation plays a secondary role in controlling the large-scale distribution of the E.S. oaks, except Quercus monimotricha. In thermal regimes, BT and/or MTW are most important for both lower and upper limits of the E.S. oaks. Furthermore, our results indicate that the upper distribution limits of the E.S. oaks are less determined by low temperatures and their duration (CI) than by other factors.

关键词： climatic indices distribution limits multiple regression analysis principal components analysis Quercus section Heterobalanus.

Reconstructing mean maximum temperature of growing season from the maximum density of the Schrenk Spruce in Yili,Xinjiang,china

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chinese Science Bulletin 2009年第13期54卷 2300-2308页

作者： CHEN Jin1,2,3,WANG LiLi1,4,5,ZHU HaiFeng1 & WU Pu1 1 Institute of Geographic sciences and Natural Resources Research,chinese academy of sciences,beijing 100101,china 2 graduate university of chinese academy of sciences,beijing 100049,china 3 Institute of Vertebrate Paleontology and Paleoanthropology,chinese academy of sciences,beijing 100044,china 4 Institute of Tibetan Plateau Research,chinese academy of sciences,beijing 100085,china 5 Institute of Desert and Meteorology,china Meteorological Administration,ürümqi 830002,china Institute of Geographic sciences and Natural Resources Research Chinese Academy of Sciences Beijing China graduate university of chinese academy of sciences Beijing China Institute of Vertebrate Paleontology and Paleoanthropology Chinese Academy of Sciences Beijing China Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing China Institute of Desert and Meteorology China Meteorological Administration Ürümqi China

To study the historical temperature variation in Yili of Xinjiang,the tree-ring chronologies of maximum density(MXD) and tree-ring width(TRW) were established with the Schrenk Spruce(Picea schrenkiana *** Mey) collected from six sites to analyze the characteristics and ability of response to climate *** results suggest that the MXD chronology of the Schrenk Spruce from different sampling sites responded to climate change well and were positively correlated with the mean maximum temperature and the mean temperature from April to August in the study *** mean maximum temperature anomaly from April to August,spanning the years from 1848 to 2000,was reconstructed by three MXD chronologies which were selected by stepwise *** reconstructed function was stable and explained 56.2% of the *** reconstructed results indicated a cold span of 153 years in spring and summer from the beginning of the 1950s to the beginning of the 1970s in the Yili *** strongly increasing tendency was detected in the mean maximum temperature anomaly from April to August during this reconstructed period.

关键词：平均最高气温伊犁谷地最大密度云杉胡杨生长季节新疆树木年轮宽度

Orbit determination and prediction accuracy analysis for a regional tracking network

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Science china(Physics,Mechanics & Astronomy) 2010年第6期53卷 1130-1138页

作者： ZHOU ShanShi 1,2,3 ,HU XiaoGong 1 & WU Bin 1 1 Shanghai Astronomical Observatory,chinese academy of sciences,Shanghai 200030,china 2 graduate university of chinese academy of sciences,beijing 100049,china 3 Research Center of GNSS,Wuhan 430079,china Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai China graduate university of chinese academy of sciences Beijing China Research Center of GNSS Wuhan China

china's COMPASS satellite navigation system relies on a regional tracking network to provide navigation services. Limited by its geographic border,the regional network is able to cover only 30% of the medium-earth-orbits(MEO). Accuracy of determined and predicted orbits is not able to satisfy system requirements if the tracking data processing strategy for global tracking network processing is used for the regional network. Two major error sources for orbital prediction are accuracy of initial orbital elements and dynamical modeling. To achieve better prediction accuracy,we propose a two-step orbit determination and prediction strategy. For step 1,only solar radiation pressure(SRP) parameters are estimated along with the orbital elements and other parameters; for step 2,all parameters are estimated but the SRP parameters are tightly constrained to their step 1 estimates. Experimenting with data from a regional GPS network,we conclude for orbital prediction using the proposed two-step strategy,the average user range error(URE) for 24-h prediction arcs is better than 0.6 m.

关键词： orbit determination and prediction regional tracking network URE

A revision of Elaeagnus L. (Elaeagnaceae) in china's mainland

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Journal of Systematics and Evolution 2010年第5期48卷 356-390页

作者： 1,2 Miao SUN 1Qi LIN 1(State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,chinese academy of sciences,beijing 100093,china) 2(graduate university of chinese academy of sciences,beijing 100049,china)

A revision of Elaeagnus *** china’s mainland is provided based on field observations and herbarium ***-two morphological characters are selected and coded,then the matrix is prepared following cluster *** characters and species delimitation are re-evaluated resulting in the recognition of 36 species,one subspecies and five varieties in china’s *** species names and three variety names are regarded as new *** information covers full synonyms,type information,description,taxonomic remarks,distribution range,occupied habitats,examined specimens,relevant illustrations,and references to selected published illustrations and reports.A key for whole species determination is *** lectotypification of Elaeagnus magna(Serv.)*** been designated.

关键词： cluster analysis Elaeagnaceae Elaeagnus relationships synonymy taxonomic revision.

Genomic organization and sequence analysis of the vomeronasal receptor V2R genes in mouse genome

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chinese Science Bulletin 2007年第3期52卷 336-342页

作者： YANG Hui1,2 & Zhang YaPing1,3 1 Laboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, chinese academy of sciences, Kunming 650223, china 2 graduate university of the chinese academy of sciences, beijing 100049, china 3 Laboratory for Conservation and Utilization of Bio-resources, Yunnan university, Kunming 650091, china Laboratory of Cellular and Molecular Evolution Kunming Institute of Zoology Chinese Academy of Sciences Kunming China graduate university of the chinese academy of sciences Beijing China Laboratory for Conservation and Utilization of Bio-resources Yunnan University Kunming China

Two multigene superfamilies, named V1R and V2R, encoding seven-transmembrane-domain G-protein coupled receptors (GPCRs) have been identified as pheromone receptors in mammals. Three V2R gene families have been described in mouse and rat. Here we screened the updated mouse genome se- quence database and finally retrieved 63 putative functional V2R genes including three newly identified genes which formed a new additional family. We described the genomic organization of these genes and also characterized the conservation of mouse V2R protein sequences. These genomic and se- quence information we described are useful as part of the evidence to speculate the functional domain of V2Rs and should give aid to the functionality study in the future.

关键词：大白鼠基因组犁鼻受体2 多基因超家族序列分析

An ID-based authenticated dynamic group key agreement with optimal round

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Science china(Information sciences) 2012年第11期55卷 2542-2554页

作者： TENG JiKai1,2,WU ChuanKun1 & TANG ChunMing3 1State Key Laboratory of Information Security,Institute of Software of chinese academy of sciences,beijing 100090,china 2graduate university of chinese academy of sciences,beijing 100049,china 3Faculty of Mathematic and Information Science,Guangzhou university,Guangzhou 510006,china State Key Laboratory of Information Security Institute of Software of Chinese Academy of Sciences Beijing China graduate university of chinese academy of sciences Beijing China Faculty of Mathematic and Information Science Guangzhou University Guangzhou China

Group key agreement protocols are crucial for achieving secure group *** are designed to provide a set of users with a shared secret key to achieve cryptographic goal over a public *** group membership changes,the session key should be refreshed efficiently and *** previous group key agreement protocols need at least two rounds to establish or refresh session *** this paper,a dynamic authenticated group key agreement(DAGKA) protocol based on identity-based cryptography is *** making use of the members' values stored in previous sessions,our Join and Leave algorithms reduce the computation and communication costs of *** the proposed protocol,Setup and Join algorithms need one *** session key can be refreshed without message exchange among remaining users in Leave algorithm,which makes the protocol more *** security is proved under decisional bilinear Diffie-Hellman(DBDH) assumption in random oracle model.

关键词： identity-based cryptography dynamic group key agreement provably secure admissible pairing

Characterization of GLUT4-containing vesicles in 3T3-L1 adipocytes by total internal reflection fluorescence microscopy

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Science china(Life sciences) 2009年第7期52卷 665-671页

作者： WANG Yan1,2,ZHANG JinZhong1,2,CHEN Yu1,2,JIANG Li1,2,JI Wei1,2 & XU Tao1 1 National Laboratory of Biomacromolecules,Institute of Biophysics,chinese academy of sciences,beijing 100101,china 2 graduate university of chinese academy of sciences,beijing 100049,china National Laboratory of Biomacromolecules Institute of Biophysics Chinese Academy of Sciences Beijing China graduate university of chinese academy of sciences Beijing China

Insulin-responsive GLUT4(glucose transporter 4) translocation plays a major role in regulating glucose uptake in adipose tissue and *** or not there is a specialized secretory GSV(GLUT4 storage vesicle) pool,and more importantly how GSVs are translocated to the PM(plasma membrane) under insulin stimulation is still under *** the present study,we systematically analyzed the dynamics of a large number of single GLUT4-containing vesicles in 3T3-L1 adipocytes by TIRFM(total internal reflection fluorescence microscopy).We found that GLUT4-containing vesicles can be classified into three groups according to their mobility,namely vertical,stable,and lateral GLUT4-containing *** these groups,vertical GLUT4-containing vesicles exclude transferrin receptors and move towards the PM specifically in response to insulin stimulation,while stable and lateral GLUT4-containing vesicles contain transferrin receptors and show no insulin *** data demonstrate that vertical GLUT4-containing vesicles correspond to specialized secretory GSVs,which approach the PM directly and bypass the constitutive recycling pathway.

关键词： GLUT4 IRAP-pHluorin GSV transferring TIRFM

Phylogeny and species delimitation of the C-genome diploid species in Oryza

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Journal of Systematics and Evolution 2011年第5期49卷 386-395页

作者： 1,2~Li-Li ZANG 1~Xin-Hui ZOU 1~Fu-Min ZHANG 3,4~Ziheng YANG 1,2~Song GE 1(State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,chinese academy of sciences,beijing 100093,china) 2(graduate university of the chinese academy of sciences,beijing 100049,china) 3(Department of Biology,university College London,London WC1E 6BT,United Kingdom) 4(Center for Computational and Evolutionary Biology,Institute of Zoology,chinese academy of sciences,beijing 100101,china) (State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing 100093 China) (graduate university of the chinese academy of sciences Beijing 100049 China) (Department of Biology University College London London WC1E 6BT United Kingdom) (Center for Computational and Evolutionary Biology Institute of Zoology Chinese Academy of Sciences Beijing 100101 China)

The diploid Oryza species with C-genome type possesses abundant genes useful for rice improvement and provides parental donors of many tetraploid species with the C-genome(BBCC,CCDD).Despite extensive studies,the phylogenetic relationship among the C-genome species and the taxonomic status of some taxa remain *** this study,we reconstructed the phylogeny of three diploid species with C-genome(Oryza officinalis,***,and ***) based on sequences of 68 nuclear single-copy *** obtained a fully resolved phylogenetic tree,clearly indicating the sister relationship of *** and ***,with *** being the more divergent *** phylogenies of the C-genome species found in previous studies might result from lineage sorting,introgression/hybridization and limited number of genetic markers *** further applied a recently developed Bayesian species delimitation method to investigate the species status of the Sri Lankan and African *** of two datasets(68 genes with a single sample,and 10 genes with multiple samples) support the distinct species status of the Sri Lankan and African *** addition,we evaluated the impact of the number of sampled individuals and loci on species *** simulation suggests that sampling multiple individuals is critically important for species delimitation,particularly for closely related species.

关键词： Bayesian species delimitation Oryza phylogeny taxonomy.