Read by QxMD icon Read

Qinghai-TIbet Plateau

Junqin Li, Jing Yang, Shan Lu, Dong Jin, Xin-He Lai, Gui Zhang, Zhi Tian, Ji Pu, Xiaomin Wu, Ying Huang, Suping Wang, Jianguo Xu
Strains 449T and 622 are both aerobic, Gram-stain-positive, short, rod-shaped bacilli that were recently isolated from the faeces of Tibetan antelopes on the Qinghai-Tibet Plateau in China. Their 16S rRNA gene sequences were most similar to those of Mycetocola zhadangensis ZD1-4T (97.9-98.0 %) and Mycetocola miduiensis CGMCC 1.11101T (97.3-97.4 %). Phylogenetic analysis of the 16S rRNA gene sequences further suggested that strains 449T and 622 represent a new lineage within the genus Mycetocola. The G+C content of strain 449T is 64...
February 14, 2019: International Journal of Systematic and Evolutionary Microbiology
Mian Zhang, Man-Man Fu, Cheng-Wei Qiu, Fangbin Cao, Zhong-Hua Chen, Guoping Zhang, Feibo Wu
Tibetan wild barley has been identified to show large genetic variation and stress tolerance. A genome-wide association (GWA) analysis was performed to detect quantitative trait loci (QTLs) for drought tolerance using 777 Diversity Array Technology (DArT) markers and morphological and physiological traits of 166 Tibetan wild barley accessions in both hydroponic and pot experiments. Large genotypic variation for these traits was found; and population structure and kinship analysis identified three subpopulations among these barley genotypes...
February 12, 2019: International Journal of Molecular Sciences
Lijun Dai, Lingqing Wang, Tao Liang, Yongyong Zhang, Jing Li, Jun Xiao, Linlin Dong, Haidong Zhang
Due to increasing anthropogenic disturbance, various pollutants have been frequently detected in QingHai-Tibet Plateau, where the environment is extremely fragile and sensitive to human activities. In this study, 51 sampling sites with different land covers were selected in a sub-basin in the Huangshui watershed in eastern QingHai-Tibet Plateau. A total of 102 soil samples were collected at surface (0-20 cm) and subsurface (20-40 cm) depths for studying on heavy metal pollution in this region. The relationships between land cover types and spatial distribution of five heavy metals Cr, Cu, Cd, Pb, and Zn were systematically analyzed combing field survey, remote-sensing database, and geostatistical methods...
February 25, 2019: Science of the Total Environment
Junqin Li, Shan Lu, Dong Jin, Jing Yang, Xin-He Lai, Gui Zhang, Zhi Tian, Wentao Zhu, Ji Pu, Xiaomin Wu, Ying Huang, Suping Wang, Jianguo Xu
Two novel aerobic, Gram-staining-positive and non-spore-forming bacterial strains, 194T and S1194, were isolated from faeces of Tibetan antelopes sampled at the Qinghai-Tibet Plateau of China. The strains were able to grow in medium up to 10 % NaCl, similar to the NaCl-resistant property of the genus Salinibacterium members. The 16S rRNA gene sequences of the strains showed the highest similarity to Salinibacterium xinjiangense(98.1-98.2 %), and phylogenetic analysis based on 16S rRNA gene sequences indicated that strains 194T and S1194 represent a new lineage...
February 12, 2019: International Journal of Systematic and Evolutionary Microbiology
Wen-Dan Wu, Wen-Hui Liu, Ming Sun, Ji-Qiong Zhou, Wei Liu, Cheng-Lin Zhang, Xing-Quan Zhang, Yan Peng, Lin-Kai Huang, Xiao Ma
Background: Understanding genetic diversity of wild plant germplasm and the relationships between ecogeographic and genetic characteristics may provide insights for better utilizing and conserving genetic resources. Elymus tangutorum (Nevski) Hand.-Mazz, a cool-season hexaploid perennial, is an important pasture bunchgrass species used for forages and grassland restoration in Qinghai-Tibet Plateau and northwest China. In this study, 27 E. tangutorum accessions from diverse origins of western China were evaluated using AFLP markers in an effort to delve into the genetic relationships among them...
2019: Hereditas
Ying Xin, Yan Wang, Huihui Wang, Xiaolong Tang, Yucheng Bai, Songsong Lu, Ying Xin
Nitric oxide (NO), produced by nitric oxide synthases (NOS) from L-arginine, plays important roles in a wide range of physiological processes. However, little is known about ectothermic species. To investigate the response of NO/NOS system in adaptation to different altitudes in Phrynocephalus genus, the red tail toad-headed lizard Phrynocephalus erythrurus that live at 4500-5300 m on the Qinghai-Tibet Plateau and another low altitude living lizard Phrynocephalus przewalskii were selected in the present study...
January 25, 2019: Comparative Biochemistry and Physiology. Part B, Biochemistry & Molecular Biology
Xiaofan Zhu, Tonghua Wu, Lin Zhao, Chengsong Yang, Huiwen Zhang, Changwei Xie, Ren Li, Weihua Wang, Guojie Hu, Jie Ni, Yizhen Du, Shuhua Yang, Yuxin Zhang, Junming Hao, Cheng Yang, Yongping Qiao, Jianzong Shi
Stable isotopic tracing has proven to be a useful tool for assessing surface water source dynamics and hydrological connectivity in permafrost regions. This study has investigated the contribution of precipitation to water within the active layer at three long-term observation sites, including Fenghuoshan (FHS), Hoh Xil (KKXL) and Wudaoliang (WDL), by using isotopic tracer technique and two-component mixing model. The results showed that precipitation was the predominant source for water within the active layer, permafrost and ground ice near permafrost table at the three sites...
January 14, 2019: Science of the Total Environment
Renqiang Li
Climate change-induced species range shift may pose severe challenges to species conservation. The Qinghai-Tibet Plateau is the highest and biggest plateau, and also one of the most sensitive areas to global warming in the world, which provides important shelters for a unique assemblage of species. Here, ecological niche-based model was employed to project the potential distributions of 59 key rare and endangered species under three climate change scenarios (RCP2.6, RCP4.5 and RCP8.5) in Qinghai Province. I assessed the potential impacts of climate change on these key species (habitats, species richness and turnover) and effectiveness of nature reserves (NRs) in protecting these species...
January 2019: Ecology and Evolution
Hai-Zhen Wang, Xin Zhong, Li Gu, Shao-Song Li, Gu-Ren Zhang, Xin Liu
As a pest on the Qinghai-Tibet Plateau, Gynaephora qinghaiensis causes severe damage to grassland vegetation and its pupae are also natural hosts of Thektogaster sp. To successfully parasitize, endoparasitoids generally introduce or secrete multiple parasitic factors into the host body during the spawning stage to suppress the host immune response. To study the parasitic effects of Thektogaster sp. on G. qinghaiensis, a transcriptome analysis of immune-related genes in parasitized and nonparasitized G. qinghaiensis pupae was performed...
January 17, 2019: Archives of Insect Biochemistry and Physiology
Yongtao Tang, Chenhong Li, Kunyuan Wanghe, Chenguang Feng, Chao Tong, Fei Tian, Kai Zhao
Highly specialized grade (HSG; genera Gymnocypris, Oxygymnocypris, Schizopygopsis, Platypharodon and Chuanchia) of the Schizothoracinae (Cypriniformes: Cyprinidae) are endemic to the Qinghai-Tibet Plateau (QTP). Previously, two distinct ecomorphs were recognized according to trophic traits. One was a limnetic omnivore with normal lower jaw morphology, terminal mouth, and moderate or dense gill rakers, mostly inhabiting in open water of lakes, including Gymnocypris and Oxygymnocypris. Another was a benthic feeder with inferior mouth, sparse gill rakers and sharp horny sheath on the lower jaw for scraping of attached prey off hard substrates, including Schizopygopsis, Platypharodon and Chuanchia...
January 11, 2019: Molecular Phylogenetics and Evolution
Yan Li, Lian-Xian Guo, Qian-Zhi Zhou, Di Chen, Jin-Zhong Liu, Xiao-Ming Xu, Jiang-Hai Wang
Humic substances in soil are considered to be an alternative food to the tender plant roots for Thitarodes larvae in the habitats of Ophiocordyceps sinensis in the Qinghai-Tibetan Plateau. However, there is no report involving the evaluation of their potential as a food source from the composition and structure of habitat soils. In this work, the composition and structure of humic substances in habitat soils from the Sejila Mountain, Tibet were characterized by diverse techniques for evaluating the nutritional value and possibility of humus as the food source for Thitarodes larvae...
January 10, 2019: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Pu Liu, Yue Zou, Shu Li, Steven L Stephenson, Qi Wang, Yu Li
Dictyostelid cellular slime molds (dictyostelids) are key components of soil microbes. The Qinghai-Tibet Plateau is characterized by unique and important forest types because of the considerable range in elevation which exists. During the period of 2012, 2013 and 2016, 12 species of dictyostelids were yielded from samples collected in this region, including two new species and three new records for China. Six other species were new records for this region. Ontogeny, morphology, ultrastructure and systematic molecular analyses (SSU & ITS) of D...
January 9, 2019: Scientific Reports
Weidong Wang, Lijin Jiao, Yanduo Tao, Yun Shao, Qilan Wang, Ruitao Yu, Lijuan Mei, Jun Dang
Lancea tibetica is an important traditional Tibetan medicinal plant that grows on the Qinghai-Tibet Plateau with great development potential in pharmaceutical industry. In this study, a combinative method using HPLC-DPPH and two-dimensional liquid chromatography has been developed to identify and separate antioxidants from Lancea tibetica. Under the target-guidance of HPLC-DPPH experiment, three antioxidant fractions from Lancea tibetica were recognized. Then, separation of the three fractions using two-dimensional semi-preparation liquid chromatography led to seven phenylpropanoids: (+)-pinoresinol-β-D-glucoside (1), isoacteoside (2), acteoside (3), tibeticoside (4),epipinoresinol (5), anthelminthicol (6) and phillygenol (7)...
December 28, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Yang Shen, Yanling Wang, Chun Chang, Suning Li, Weihao Li, Bingying Ni
Chronic exposure to high altitude may lead to hyperuricemia. We investigated the prevalence of hyperuricemia and its risk factors among employees in high-altitude areas. A cross-sectional survey with cluster sampling was performed at 23 worksites on the Qinghai-Tibet Plateau. Subjects were evaluated by using questionnaires, anthropometric and laboratory measurements, and abdominal ultrasound. A multilevel logistic regression model and restricted cubic spline were used to explore the associated factors of hyperuricemia...
January 3, 2019: Clinical Rheumatology
Abdul-Rauf Malimanga Alhassan, Weiwei Ma, Guang Li, Zhirong Jiang, Jiangqi Wu, Guopeng Chen
The study was conducted during the growing seasons of 2013, 2014, and 2015 in the wet meadows on the eastern Qinghai-Tibet plateau (QTP) in the Gansu Gahai Wetland Nature Reserve to determine the dynamics of soil organic carbon (SOC) as affected by vegetation degradation along a moisture gradient and to assess its relationship with other soil properties and biomass yield. Hence, we measured SOC at depths of 0-10, 10-20, and 20-40 cm under the influence of four categories of vegetation degradation (healthy vegetation [HV], slightly degraded [SD], moderately degraded [MD], and heavily degraded [HD])...
December 2018: Ecology and Evolution
Xiongdong Zhou, Mengzhen Xu, Zhaoyin Wang, Bofu Yu, Xuejun Shao
The biodiversity value of river-oxbow lake systems in high plateau peatland has been little recognized, and there are many gaps in our understanding of their ecology. In this study, we investigated the river-oxbow lake system of the Bai River basin, the main tributary of the Yellow River Source in the Zoige wetland from 2015 to 2016, in attempt to show how the environmental variations, especially hydrological connectivity and macrophyte biomass in the river-oxbow lake system influenced macroinvertebrates. Habitat patches were investigated in 11 river cross-sections and 18 oxbow lakes in the Bai River basin...
December 22, 2018: Science of the Total Environment
Wei Wei Ma, Yue Si Wang, Guang Li, Jiang Qi Wu, Yong Zhong Luo, Guo Peng Chen
Qinghai-Tibet Plateau wetland, an important component of terrestrial ecosystem, plays an essential role in global carbon cycling. To understand the variation of organic carbon storage in vegetation-soil system during vegetation degradation in the Gahai wetland we examined aboveground litter, root biomass and soil organic carbon content in different degradation stages (CK: no degradation, SD: light degradation, MD: moderate degradation, HD: heavy degradation). The results showed that except for HD, carbon storage of aboveground biomass was 99...
December 2018: Ying Yong Sheng Tai Xue Bao, the Journal of Applied Ecology
Yu Ning, Gao-Jie Wu, Hua Ma, Ju-Lan Guo, Man-Yin Zhang, Wei Li, Yi-Fei Wang, Suo-Lang Duoerji
Tussocks are unique vegetation structures in wetlands. Many tussock species mainly reproduce by clonal growth, resulting in genetically identical offspring distributed in various spatial patterns. These fine-scale patterns could influence mating patterns and thus the long-term evolution of wetland plants. Here, we contribute the first genetic and clonal structures of two key species in alpine wetlands on the Qinghai-Tibet Plateau, Kobresia tibetica and Blysmus sinocompressus, using > 5000 SNPs identified by 2b-RAD sequencing...
2018: PloS One
Jun Wu, Jian Lu, Cui Zhang, Zhenhua Zhang, Xiuyun Min
This study investigated the adsorptive removal of target fluoroquinolones and tetracyclines by biochar made by yak dung collected from the Qinghai-Tibet Plateau. Yak dung biochar pyrolyzed at 700 °C possessed surface area of 198.745 m2  g-1 and multiple functional groups. Effects of different factors including biochar dosage, pH, temperature, and initial concentration on adsorption of antibiotics were discussed. The biochar dosage of 1 g L-1 was preferable for adsorptive removal of antibiotics. Adsorption of target antibiotics did not show pH-dependent features...
December 14, 2018: Bulletin of Environmental Contamination and Toxicology
Da-Cheng Hao, Pei-Gen Xiao, Chang Liu
Around 70-80% of drugs used in traditional Tibetan medicine (TTM) come from Qinghai Tibet Plateau, the majority of which are plants. The biological and medicinal culture diversity on Qinghai Tibet Plateau are amazing and constitute a less tapped resource for innovative drug research and development. Meanwhile, the problem of the exhausting Tibetan medicine resources is worrying. Here, the latest awareness, as well as the gaps of the traditional Tibetan medicinal plant issues in drug development and clinical usage of TTM compounds, was systematically reviewed and highlighted...
November 30, 2018: Future Medicinal Chemistry
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"