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1Pattern of latest tectonic motion and its dynamics for active blocks in Sichuan-Yunnan region, China显示文摘Based on the concept of 'active blocks' and spatial distribution of historical earthquakes with surface ruptures as well as major and subordinate active faults. The Sichuan-Yunnan region can be divided into four first-order blocks. They are the Markam block (I), the Sichuan-Yunnan rhombic block (II), Baoshan-Pu'er block (III), and Mizhina-Ximeng block (IV). Cut by sub-ordinate NE-trending active faults, the Sichuan-Yunnan rhombic block (II) can be further divided into two sub-blocks: the northwestern Sichuan sub-block (II1) and the middle Yunnan sub-block (II2), while the Baoshan- Pu'er block (III) can be further divided into three sub-blocks: Baoshan sub-block (III1), Jinggu sub-block (III2), and Mengla sub-block (III3). A quantitative study of offset landforms is carried out and the basic types of active faults and their long-term slip rates along the major boundaries of active blocks of different orders in the Sichuan-Yunnan region are determined, through slip vector analysis, the motion states of the active blocks are clarified and the deformation coordination on the block margins is discussed. It is suggested that the tectonic motion of the blocks in this region is a complex or superimposition of three basic types of motions: southeastward sliding, rotating on vertical axis, and uplifting. The Markam block (I), the northwestern Sichuan sub-block (II1), and middle Yunnan sub-block (II2) have a southeastward horizontal sliding rate of 1-5 mm/a, clockwise rotating angular rate of 1.4-4(/Ma, and uplifting rate of about 1 mm/a. The Baoshan-Pu'er (III) and Mizhina-Ximeng (IV) blocks have also been extensively clockwise rotated. This pattern of motion is a strain response to the collision between the Indian and Eurasian plates and the localized deformation and differential slip on the block margins associated with the northward motion of the Indian Plate. Because a set of transverse thrusts between the blocks absorbs and transforms some components of eastward or southeastward sliding motion, the eastward escape or extrusion of the Tibetan Plateau is limited as 'imbricated thrusting transformation-limited extrusion model'.XU Xiwei (徐锡伟) WEN Xueze (闻学泽) ZHENG Rongzhang (郑荣章) MA Wentao (马文涛) SONG Fangming (宋方敏) YU Guihua (于贵华) 2003Science China Earth Sciences2003,46,z2:127
2FTO-dependent demethylation of N6-methyladenosine regulates mRNA splicing and is required for adipogenesis显示文摘Xu Zhao Ying Yang Bao-Fa Sun Yue Shi Xin Yang Wen Xiao Ya-Juan Hao Xiao-Li Ping Yu-Sheng Chen Wen-Jia Wang Kang-Xuan Jin Xing Wang Chun-Min Huang Yu Fu Xiao-Meng Ge Shu-Hui Song Hyun Seok Jeong Hiroyuki Yanagisawa Yamei Niu Gui-Fang Jia Wei Wu Wei-Min Tong Akimitsu Okamoto Chuan He Jannie M Rendtlew Danielsen Xiu-Jie Wang Yun-Gui Yang 2014Cell Research2014,24,12:109
3Anthropogenic emission inventories in China:a review显示文摘The development of reliable anthropogenic emission inventories is essential for both understanding the sources of air pollution and designing effective air-pollution-control measures in China. However, it is challenging to quantify emissions in China accurately, given the variety of contributing sources, the complexity of the technology mix and the lack of reliable measurements. Over the last two decades,tremendous efforts have been made to improve the accuracy of emission inventories, and significant improvements have been realized. More reliable statistics and survey-based data have been used to reduce the uncertainties in activity rates and technology distributions. Local emission factors and source profiles covering various sources have been measured and reported. Based on these local databases, improved emission inventory models have been developed for power plants, large industrial plants and the residential,transportation and agricultural sectors. In this paper, we review the progress that has been made in developing inventories of anthropogenic emissions in China. We first highlight the major updates that have been made to emission inventory models and the underlying data by source category. We then summarize the sector-based estimates of emissions of different species contained in current inventories. The progress that has been made in the development of model-ready emissions is also presented. Finally, we suggest future directions for further improving the accuracy of emission inventories in China.Meng Li Huan Liu Guannan Geng Chaopeng Hong Fei Liu Yu Song Dan Tong Bo Zheng Hongyang Cui Hanyang Man Qiang Zhang Kebin He 2017National Science Review2017,4,6:100
4Stable classi?cation with limited sample: transferring a 30-m resolution sample set collected in 2015 to mapping 10-m resolution global land cover in 2017显示文摘As the world strives to reduce the impact of population growth, urbanization, agricultural expansion, and climate change on food security, energy and water shortage, resource over-exploration, biodiversity loss, environmental pollution, and ultimately human health, timely and higher resolution land cover information is urgently needed to achieve the sustainable development goals of the United Nations.Peng Gong Han Liu Meinan Zhang Congcong Li Jie Wang Huabing Huang Nicholas Clinton Luyan Ji Wenyu Li Yuqi Bai Bin Chen Bing Xu Zhiliang Zhu Cui Yuan Hoi Ping Suen Jing Guo Nan Xu Weijia Li Yuanyuan Zhao Jun Yang Chaoqing Yu Xi Wang Haohuan Fu Le Yu Iryna Dronova Fengming Hui Xiao Cheng Xueli Shi Fengjin Xiao Qiufeng Liu Lianchun Song 2019Science Bulletin2019,64,6:166
5Primary antibiotic resistance of Helicobacter pylori strains isolated from patients with dyspeptic symptoms in Beijing: A prospective serial study显示文摘AIM:To determine the resistance patterns of Helicobacter pylori(H.pylori) strains isolated from patients in Beijing and monitor the change of antibiotic resistance over time.METHODS:In this prospective,serial and crosssectional study,H.pylori cultures were successfully obtained from 371 and 950 patients(never receiving eradication) during 2009-2010 and 2013-2014,respectively.Resistance to amoxicillin,clarithromycin,metronidazole,levofloxacin,tetracycline,and rifampicin was determined by Epsilometer test.RESULTS:The resistance rates of isolates obtained during 2009-2010 were 66.8%,39.9%,34.5%,15.4%,6.7%,and 4.9% to metronidazole,clarithromycin,levofloxacin,rifampicin,amoxicillin and tetracycline,respectively; and the corresponding rates for isolates during 2013-2014 were 63.4%,52.6%,54.8%,18.2%,4.4% and 7.3%,respectively.The resistance rates to clarithromycin and levofloxacin were significantly increased after four years.In 2009-2010,14.6% of H.pylori isolates were susceptible to all tested antibiotics,with mono(33.7%),double(28.3%),triple(16.7%),quadruple(6.2%),quintuple(0.3%) and sextuple resistance(0.3%) also being detected.In 2013-2014,9.4% were susceptible to all tested antibiotics,and mono(27.6%),double(28.4%),triple(24.9%),quadruple(7.3%),quintuple(2.3%) and sextuple resistance(0.1%) was also observed.More multiple resistant H.pylori isolates were found during 2013-2014.Gender(to levofloxacin and metronidazole),age(to levofloxacin) and endoscopic findings(to clarithromycin) were independent factors influencing antibiotic resistance.CONCLUSION:H.pylori resistance to commonly used antibiotics in Beijing is high with increased multiple antibiotic resistance.Yue-Xi Zhang Li-Ya Zhou Zhi-Qiang Song Jian-Zhong Zhang Li-Hua He Yu Ding 2015World Journal of Gastroenterology2015,21,9:138
6Missed diagnosis of early gastric cancer or high-grade intraepithelial neoplasia显示文摘AIM: To investigate the causes of missed diagnosis of early gastric cancer (EGC) or high-grade intraepithelial neoplasia (HGIN) in Chongqing, China. METHODS: The present study summarizes 103 cases of EGC/HGIN detected by esophagogastroduodenos-copy (EGD) and pathological analysis from January 2010 to December 2011. Dimethyl silicone oil was administrated orally 15 min before the EGD procedures. The stomach was cleaned by repeated washing with saline when the gastroscope entered the stomach cavity. Suspected EGC lesions were subject to conventional biopsy sampling and pathological examinations. The correlation between lesion locations, endoscopic morphology of cancerous sites, training level of the examiners, pathological biopsies, and missed diagnosis was analyzed. RESULTS: Twenty-three cases were missed among the 103 cases (22.23%) of EGC/HGIN. The rate of missed EGC in the gastroesophageal junction (8/19, 42.1%) was significantly higher than at other sites (15/84, 17.86%) (χ2 = 5.253, P = 0.022). In contrast, the rate of missed EGC in the lower stomach body (2/14, 14.29%) was lower than at other sites (21/89,23.6%), but there were no significant differences (χ2 = 0.289, P = 0.591). The rate of missed EGC in the gastric antrum (5/33, 15.15%) was lower than at other sites (18/70, 25.71%), but there were no significant differences (χ2 = 1.443, P = 0.230). Endoscopists from less prestigious hospitals were more prone to not diagnosing EGC than those from more prestigious hospitals (χ2 = 4.261, P = 0.039). When the number of biopsies was < 4, the rate of missed diagnosis was higher (20/23, 89.96%) than for when there were > 4 biopsies (3/23, 13.04%) (P < 0.001). In addition, there was no significant difference in the rate of missed diagnosis in patients with 1-3 biopsy specimens (χ2 = 0.141, P = 0.932). CONCLUSION: Endoscopists should have a clear understanding of the anatomical characteristics of the esophagus/stomach, and endoscopic identification of early lesions increases with the number of biopsies.Wei Ren Jin Yu Zhi-Mei Zhang Yuan-Kun Song Yi-Hui Li Lei Wang 2013World Journal of Gastroenterology2013,19,13:58
7Differentiation of bone marrow-derived mesenchymal stem cells from diabetic patients into insulin-producing cells in vitro显示文摘Bckground 干细胞,有能力区分进生产胰岛素的房间(欧洲电脑生产厂商) ,将为移植提供小岛房间的潜在地无限的来源并且减轻可获得性和 allogeneic 拒绝的主要限制。因此,干细胞的利用为糖尿病 mellitus (DM ) 正在成为最有希望的治疗。这里,我们学习了糖尿病的病人的骨头的区别能力导出髓的间充质的干细胞( MSC )并且测试了使用 MSC 的可行性因为房间 replacement.Methods 骨头导出髓的 MSC 从 10 个 DM 病人被获得( 5 打 1 DM , 5 打 2 DM )并且在一个三阶段的协议下面导致了到欧洲电脑生产厂商。MSC 的代表性的房间表面抗原表示侧面被流动 cytometric 分析分析。反向的抄写聚合酶链反应(RT-PCR ) 被执行检测与胰腺的房间开发和功能有关的多重基因。欧洲电脑生产厂商的身份被形态学, ditizone 染色和 immunocytochemistry 的分析说明。由这些房间的胰岛素的版本被 MSC 的 immunoradioassay.Results 流动 cytometric 分析在 3 显示出的经过证实这些房间表示了 CD29 (98.28%) 的高水平, CD44 (99.56%) 和 CD106 (98.34%) 。典型像小岛的房间簇在协议(18 天) 的结束被观察。染色的 Ditizone 和为胰岛素的 immunohistochemistry 两个都是积极的。在舞台 2 点的这些区分的房间(10 天) 表示了 nestin,胰腺的十二指肠的 homeobox-1 (PDX-1 ) , Neurogenin3, Pax4,胰岛素, glucagon,但是(18 天) 在舞台 3 点,我们观察了 PDX-1 的高表示,胰岛素, glucagon。胰岛素被这些房间以从 DM 病人的 .Conclusions 骨头导出髓的 MSC 能在 vitro 在某些条件下面区分进功能的欧洲电脑生产厂商的一种调整方式(P0.05 ) 响应葡萄糖刺激的不同集中分泌。用糖尿病的病人的自己的骨头,导出髓的 MSC 将作为为房间代替的自体同源的欧洲电脑生产厂商的来源是可行的。SUN Yu CHEN Li HOU Xin-guo HOU Wei-kai DONG Jian-jun SUN Lei TANG Kuan-xiao WANG Bin SONG Jun LI Hui WANG Ke-xin 2007Chinese Medical Journal2007,,9:57
8The Reference Genome of Tea Plant and Resequencing of 81 Diverse Accessions Provide Insights into Its Genome Evolution and Adaptation显示文摘Tea plant is an important economic crop,which is used to produce the world's oldest and most widely consumed tea beverages.Here,we present a high-quality reference genome assembly of the tea plant(Camellia sinensis var.sinensis)consisting of 15 pseudo-chromosomes.LTR retrotransposons(LTR-RTs)account for 70.38%of the genome,and we present evidence that LTR-RTS play critical roles in genome size expansion and the transcriptional diversification of tea plant genes through preferential insertion in promoter regions and introns.Genes,particularly those coding for terpene biosynthesis pro-teins,associated with tea aroma and stress resistance were significantly amplified through recent tandem duplications and exist as gene clusters in tea plant genome.Phylogenetic analysis of the sequences of 81 tea plant accessions with diverse origins revealed three well-differentiated tea plant populations,support-ing the proposition for the southwest origin of the Chinese cultivated tea plant and its later spread to western Asia through introduction.Domestication and modern breeding left significant signatures on hundreds of genes in the tea plant genome,particularly those associated with tea quality and stress resis-tance.The genomic sequences of the reported reference and resequenced tea plant accessions provide valuable resources for future functional genomics study and molecular breeding of improved cul-tivars of tea plants.Enhua Xia Wei Tong Yan Hou Yanlin An Linbo Chen Qiong Wu Yunlong Liu Jie Yu Fangdong Li Ruopei Li Penghui Li Huijuan Zhao Ruoheng Ge Jin Huang Ali Inayat Mallano Yanrui Zhang Shengrui Liu Weiwei Deng Chuankui Song Zhaoliang Zhang Jian Zhao Shu Wei Zhengzhu Zhang Tao Xia Chaoling Wei Xiaochun Wan 2020Molecular Plant2020,13,7:51
9An Interdisciplinary Nutrition Support Team Improves Clinical and Hospitalized Outcomes of Esophageal Cancer Patients with Concurrent Chemoradiotherapy显示文摘Ming-Hua Cong Shu-Luan Li Guo-Wei Cheng Jin-Ying Liu Chen-Xin Song Ying-Bing Deng Wei-Hu Shang Di Yang Xue-Hui Liu Wei-Wei Liu Shi-Yan Lu Lei Yu 2015Chinese Medical Journal2015,,22:41
10IPA1 functions as a downstream transcription factor repressed by D53 in strigolactone signaling in rice显示文摘Strigolactones (SL ) ,一组类胡萝卜素导出 terpenoid 内酯,是压制射击由禁止腋的芽的长出分叉的 root-to-shoot 植物激素。矮子 53 (D53 ) ,表明小径的 SL 的关键抑压者,被推测调整 SL 反应的下游的 transcriptional 网络。然而, D53 指向的下游的抄写因素还都没被报导。这里,我们报导那理想的植物体系结构 1 (IPA1 ) ,在米饭的植物体系结构的一个关键管理者,在调整 tiller 数字和导致 SL 的基因表示作为 D53 的一个直接下游的部件工作。我们证明 D53 在 vivo 并且在 vitro 与 IPA1 交往并且压制 IPA1 的 transcriptional 激活活动。我们进一步证明 IPA1 能直接绑在 D53 倡导者并且在导致 SL 的 D53 表示的反馈规定起一个关键作用。这些调查结果表明 IPA1 是可能的与 D53 行动到的长推测的抄写因素之一调停在米饭的调整 SL 的 tiller 发展。Xiaoguang Song Zefu Lu Hong Yu Gaoneng Shao Jinsong Xiong Xiangbing Meng Yanhui Jing Guifu Liu Guosheng Xiong Jingbo Duan Xue-Feng Yao Chun-Ming Liu Hongqing Li Yonghong Wang Jiayang Li 2017Cell Research2017,27,9:48
11Construction of a Genome-Wide Mutant Library in Rice Using CRISPR/Cas9显示文摘Meng, Xiangbing Yu, Hong Zhang, Yi Zhuang, Fengfeng Song, Xiaoguang Gao, Songsong Gao, Caixia Li, Jiayang 2017Molecular Plant2017,10,9:46
12Trends in Lipids Level and Dyslipidemia among Chinese Adults, 2002-2015显示文摘Objective To investigate the trends of lipid profiles and dyslipidemia among Chinese adults from 2002 to 2015.Methods Data were collected from three nationally representative cross-sectional surveys.Fasting venous blood samples were collected and serum lipids were tested by biochemical analysis and enzymatic determination.Lipid levels and the prevalence of dyslipidemia among adults were analyzed with complex sampling weighting adjustment for age and gender.Results The weighted means of TC, TG, and LDL-c significantly increased linearly from 3.93, 1.12, and 2.12 mmol/L in 2002 to 4.59, 1.41, and 2.78 mmol/L in 2010 and then to 4.63, 1.47, and 2.87 mmol/L in 2015, respectively;by contrast, HDL-c levels decreased significantly from 1.30 mmol/L to 1.26 mmol/L over the same period.Similar trends in mean non-HDL-c and lipid-related ratios were observed.The weighted dyslipidemia prevalence linearly increased;in particular, hypercholesterolemia increased from 1.6% to 5.6% and then to 5.8%, hypertriglyceridemia increased from 5.7% to 13.6% and then to 15.0%, low HDL-c increased from 18.8% to 35.5% and then to 24.9%, and high LDL-c increased from 1.3% to 5.6% and then to 7.2%(P for trend <0.001).Conclusion Dyslipidemia increased among Chinese adults from 2002 to 2015.Development of a comprehensive strategy to decrease lipid levels in this population is urgently required.SONG Peng Kun MAN Qing Qing LI Hong PANG Shao Jie JIA Shan Shan LI Yu Qian HE Li ZHAO Wen Hua ZHANG Jian 2019Biomedical and Environmental Sciences2019,32,8:45
13Fibroblast growth factor-4 and hepatocyte growth factor induce differentiation of human umbilical cord blood-derived mesenchymal stem cells into hepatocytes显示文摘AIM: To investigate the differentiation of human umbilical cord blood (HUCB)-derived mesenchymal stem cells (MSCs) into hepatocytes by induction of fibroblast growth factor-4 (FGF-4) and hepatocyte growth factor (HGF), and to find a new source of cell types for therapies of hepatic diseases.METHODS: vSCs were isolated by combining gradient density centrifugation with plastic adherence. When HUCB-derived MSCs reached 70% confluence, they were cultured in Iscove modified Dulbecco medium (IMDM) supplemented with 10 mL/L FBS, 20 ng/mL HGF and 10 ng/mL FGF-4. The medium was changed every 4 d and stored for albumin, alpha-fetoprotein (AFP) and urea assay. Expression of CK-18 was detected by immunocytochemistry. Glycogen storage in hepatocytes was determined by PAS staining.RESULTS: By combining gradient density centrifugation with plastic adherence, we could isolate MSCs from 25.6% of human umbilical cord blood. When MSCs were cultured with FGF-4 and HGF, approximately 63.6% of cells became small, round and epithelioid on d 28 by morphology. Compared with the control, the level of AFP increased significantly from d 12 to 18.20±1.16 μg/L (t = 2.884, P<0.05) in MSCs cultured with FGF-4 and HGF, and was higher (54.28±3.11 μg/L) on d 28 (t = 13.493, P<0.01). Albumin increased significantly on d 16 (t = 6.68, P<0.01) to 1.02±0.15 μg/mL, and to 3.63±0.30 μg/mL on d 28 (t = 11.748, P<0.01). Urea(4.72±1.03 μmol/L) was detected on d 20 (t = 4.272,P<0.01), and continued to increase to 10.28±1.06 μmol/L on d 28 (t = 9.276, P<0.01). Cells expressed CK-18 on d 16. Glycogen storage was observed on d 24. CONCLUSION: HUCB-derived MSCs can differentiate into hepatocytes by induction of FGF-4 and HGF. HUCBderived MSCs are a new source of cell types for cell transplantation therapy of hepatic diseases.Xin-Qin Kang Wei-Jin Zang Li-Jun Bao Dong-Ling Li Tu-Sheng Song Xiao-Li Xu Xiao-Jiang Yu 2005World Journal of Gastroenterology2005,11,47:38
14A 4-bp Insertion at ZmPLA 1 Encoding a Putative Phospholipase A Generates Haploid Induction in Maize显示文摘Chenxu Liu Xiang Li Dexuan Meng Yu Zhong Chen Chen Xin Dong Xiaowei Xu Baojian Chen Wei Li Liang Li Xiaolong Tian Haiming Zhao Weibin Song Haishan Luo Qinghua Zhang Jinsheng Lai Weiwei Jin Jianbing Yan Shaojiang Chen 2017Molecular Plant2017,10,3:39
15Strategies of minimally invasive treatment for intrahepatic and extrahepatic bile duct stones显示文摘Zongming Zhang Zhuo Liu Limin Liu Mengmeng Song Chong Zhang Hongwei Yu Baijiang Wan Mingwen Zhu Zixu Liu Hai Deng Haiming Yuan Haiyan Yang Wenping Wei Yue Zhao 2017Frontiers of Medicine2017,11,4:37
16A study of interaction between surface water and groundwater using environmental isotope in Huaisha River basin显示文摘The surface water and groundwater are important components of water cycle, and the interaction between surface water and groundwater is the important part in water cycle research. As the effective tracers in water cycle research, environmental isotope and hydrochemistry can reveal the interrelationships between surface water and groundwater effectively. The study area is the Huaisha River basin, which is located in Huairou district, Beijing. The field surveying and sampling for spring, river and well water were finished in 2002 and 2003. The hydrogen and oxygen isotopes and water quality were measured at the laboratory. The spatial characteristics in isotope and evolution of water quality along river lines at the different area were analyzed. The altitude effect of oxygen isotope in springs was revealed, and then using this equation, theory foundation for deducing recharge source of spring was estimated. By applying the mass balance method, the annual mean groundwater recharge rate at the catchment was estimated. Based on the groundwater recharge analysis, combining the hydrogeological condition analysis, and comparing the rainfall-runoff coefficients from the 1960s to 1990s in the Huaisha River basin and those in the Chaobai River basin, part of the runoff in the Huaisha River basin is recharged outside of this basin, in other words, this basin is an un-enclosed basin. On the basis of synthetically analyses, combining the compositions of hydrogen and oxygen isotopes and hydrochemistry, geomorphology, geology, and watershed systems characteristics, the relative contributions between surface water and groundwater flow at the different areas at the catchments were evaluated, and the interaction between surface water and groundwater was re- vealed lastly.SONG Xianfang1, LIU Xiangchao1, 2, XIA Jun1, YU Jingjie1 & TANG Changyuan1, 3 1. Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographical Sciences and Natural Re- sources Research, Chinese Academy of Sciences, Beijing 100101, China 2. College of River and Ocean, Chongqing Jiaotong University, Chongqing 400074, China 3. Chiba University, Chiba 263-8522, Japan 2006Science China Earth Sciences2006,49,12:34
17Assessment of candidate plant DNA barcodes using the Rutaceae family显示文摘DNA barcoding is a rapidly developing frontier technology that is gaining worldwide attention.Here,seven regions (psbA-trnH,matK,ycf5,rpoC1,rbcL,ITS2,and ITS) with potential for use as DNA barcodes were tested for their ability to identify 300 samples of 192 species from 72 genera of the family Rutaceae.To evaluate each barcode’s utility for species authentication,PCR amplification efficiency,genetic divergence,and barcoding gaps were assessed.We found that the ITS2 region exhibited the highest inter-specific divergence,and that this was significantly higher than the intra-specific variation in the 'DNA barcoding gap' assessment and Wilcoxon two-sample tests.The ITS2 locus had the highest identification efficiency among all tested regions.In a previous study,we found that ITS2 was able to discriminate a wide range of plant taxa,and here we confirmed that ITS2 was also able to discriminate a number of closely related species.Therefore,we propose that ITS2 is a promising candidate barcode for plant species identification.LUO Kun1,2,CHEN ShiLin1,CHEN KeLi2,SONG JingYuan1,YAO Hui1,MA XinYe1,ZHU YingJie3,PANG XiaoHui1,YU Hua1,LI XiWen1,4 & LIU Zhen2 1Institute of Medicinal Plant Development,Peking Union Medical College,Chinese Academy of Medical Sciences,Beijing 100193,China 2College of Pharmacy,Hubei University of Chinese Medicine,Wuhan 430061,China 3School of Bioscience and Engineering,Southwest Jiaotong University,Chengdu 610031,China 4Department of Chemistry,Tsinghua University,Beijing 100084,China 2010Science China(Life Sciences)2010,53,6:32
18Comparative study of the net exchange of CO_(2) in 3 types of vegetation ecosystems on the Qinghai-Tibetan Plateau显示文摘Using the eddy covariance method,from 1 July2003 to 30 June 2004, we conducted the observation andanalysis of ecosystem CO2 flux in 3 types of alpine meadowvegetation (Kobresia humilis, Potentilla fruticosa shrub andKobresia tibetica swamp meadows) on the Qinghai-TibetanPlateau. The results show that the Kobresia humilis meadow,the shrub meadow and the swamp meadow’s highest CO2uptake rates are 16.78, 10.42 and 16.57 μmol·m?2·s?1respectively, while their highest CO2 release rates are 8.22,7.73 and 18.67 μmol·m?2·s?1 respectively. The Kobresiahumilis meadow and shrub meadow’s annual atmosphericuptakes are 282 g CO2/m2 and 53 g CO2/m2, respectively,while swamp meadow’s annual atmospheric release is 478 gCO2/m2. This proves that the Kobresia humilis meadow andthe shrub meadow on the Qinghai-Tibetan Plateau haverelatively low potential for CO2 uptake and release comparedto C4 grasslands, a number of lowland grasslands, andforests. Moreover, swamp meadow has relatively high releasepotential. This, in turn, reveals clear differences in carbonsource/sink between different types of vegetation in theQinghai-Tibetan Plateau alpine meadow ecosystem. Thesedifferences are mainly brought by differences in thevegetations’ photosynthetic capacity and soil respiration.ZHAO Liang LI Yingnian ZHAO Xinquan XU Shixiao TANG Yanhong YU Guirui GU Song DU Mingyuan WANG Qinxue 2005Chinese Science Bulletin2005,50,16:34
19Shortened Basal Internodes Encodes a Gibberellin 2-Oxidase and Contributes to Lodging Resistance in Rice显示文摘改进住宿抵抗的繁殖半矮子变化被证明了在自从绿 revolution.?However 的来临,增加谷物产量极其成功,在亚洲繁殖半矮子米饭变化的多数主要依赖于 SD1 的变异的等位基因的基因介绍,它编码赤霉素( GA ) 20-oxidase , OsGA20ox2 ,为催化 GA 生合成。这里,我们报导新米饭住宿抵抗基因,弄短的基础 Internodes (SBI ) ,它编码赤霉素 ? 2-oxidase 并且明确地控制灰煤杆的延伸通过撤销的基础 internodes GA 活动。SBI 主要在灰煤杆被表示基础 internodes。基因分析显示 SBI 是影响米饭高度和住宿抵抗的半主导的基因。SBI 突变而产生之遗传的变体显示不同活动并且与米饭变化的高度被联系。与 SBI 等位基因的更高的活动繁殖与改进住宿抵抗和增加的产量产生新米饭变化。SBI 的发现为生产半矮子米饭显型提供一个理想的基因资源并且为与提高的住宿抵抗和高产量引起米饭变化提供有效策略。Chang Liu Jinshan Gui Chenjian Fu Hasi Yu Dongliang Song Junhui Shen Peng Qin Xuanming Liu Bin Han Yuanzhu Yang Laigeng Li 2018Molecular Plant2018,11,2:33
20High-density Linkage Map of Cultivated Allotetraploid Cotton Based on SSR, TRAP, SRAP and AFLP Markers显示文摘一张高密度的连锁图为从在 Gossypium hirsutum L 之间的 cultivatedallotetraploid 种类的一个种间的十字导出的一张 F_2 人口被构造。并且 G.barbadense L。从种间的十字的 186 个 F_2 个人的一个总数“ CRI36 x 哈尔 7124' 是在包括一个新奇标记系统的 1 252 多态的 loci 的 genotyped,目标区域扩大多型性(陷井) 。地图由 1 097 个标记组成,包括 697 简单顺序重复(SSR ) , 171 个陷井, 129 顺序相关的放大多型性, 98 放大 fragmentlengthpolymorphisms,和二个词法标记,并且跨越了 4 有 4.1cM 的平均遗传距离的 536.7 厘米每标记。用在染色体之中的 45 复制 SSR loci, 13 同源染色体中的 11 个在四倍体棉花被识别。这张地图将为量的特点 loci 并且在棉花的分子的繁殖印射的高分辨率提供一个必要资源。Jiwen Yu Shuxun Yu Cairui Lu Wu Wang Shuli Fan Meizhen Song Zhongxu Lin Xianlong Zhang Jinfa Zhang 2007Journal of Integrative Plant Biology2007,49,5:29
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