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Reproductive Strategy and Cycle of the Toad-headed Agama Phrynocephalus grumgrzimailoi(Agamidae) in Xinjiang,China

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Asian Herpetological Research 2012年第3期3卷 198-204页

作者： Yang liU Yucheng SONG wenrong li Lei SHI College of Animal Science Xinjiang Agricultural University Chengdu Institute of Biology Chinese Academy of Sciences Institute of Wildlife Conservation Central South University of Forestry Technology College of life and Environmental Sciences Shanghai Normal University

The reproductive strategy and cycle of Phrynocephalus grumgrzimailoi were studied at a locality close to Urumqi City, Xinjiang, China. The hatchlings of P. grumgrzimailoi need at least two years to reach sexual maturity, with the smallest mature male and female measured 48.02 mm and 47.01 mm snout-vent length(SVL), respectively. Adult females produce a single clutch per breeding season, with the clutch size ranging from 1 to 5. The clutch size and mass are significantly correlated with female SVL. There is no correlation of mean egg size with clutch size and relative fecundity in P. grumgrzimailoi, suggesting that the trade-off is absent between mean egg size and number. Females increase reproductive output mainly through increasing egg numbers. The copulation period lasts from April to June. Females begin vitellogenesis in April and lay eggs from May to July. Our results suggest that toad-headed lizards tend to select different reproductive strategies to adapt themselves to their arid or semi-arid habitats.

关键词： clutch size relative fecundity reproductive output sexual maturity trade-off

Adenine Phosphoribosyl Transferase 1 is a Key Enzyme Catalyzing Cytokinin Conversion from Nucleobases to Nucleotides in Arabidopsis

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Molecular Plant 2013年第5期6卷 1661-1672页

作者： Xinyan Zhang Yutao Chen Xin lin Xinyu Hong Ying Zhu Wenyang li wenrong He Fengying An Hongwei Guo State Key Laboratory of Protein and Plant Gene Research College of Life Sciences Peking-Tsinghua Center for Life Sciences Peking University Life Sciences Building 5 Yi He Yuan Road Haidian Beijing 100871 China

In plants, the cytokinin metabolic processes, including cytokinin biosynthesis, interconversion, inactivation, and degradation, play critical roles in the regulation of cytokinin homeostasis and plant development. Purine meta- bolic enzymes have been implied to catalyze the cytokinin interconversion in previous works. In this study, we report that Adenine Phosphoribosyl Transferase 1 （APT1） is the causal gene of the high-dose cytokinin-resistant mutants. APT1 catalyzes the cytokinin conversion from free bases to nucleotides, and is functionally predominant among the five members of the Arabidopsis Adenine Phosphoribosyl Transferase family. Loss of APT1 activity in plants leads to excess accumulation of cytokinin bases, thus evoking myriad cytokinin-regulated responses, such as delayed leaf senescence, anthocyanin accumulation, and downstream gene expression. Thus, our study defines APT1 as a key metabolic enzyme participating in the cytokinin inactivation by phosphoribosylation.

关键词： APT1 phosphoribosylation cytokinin plant hormone Arabidopsis thaliana.

A Hu sheep genome with the first ovine Y chromosome reveal introgression history after sheep domestication

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Science China(life Sciences) 2021年第7期64卷 1116-1130页

作者： Ran li Peng Yang Ming li Wenwen Fang Xiangpeng Yue Hojjat Asadollahpour Nanaei Shangquan Gan Duo Du Yudong Cai Xuelei Dai Qimeng Yang Chunna Cao Weidong Deng Sangang He wenrong li Runlin Ma Mingjun liu Yu Jiang Key Laboratory ofAnimal Genetics Breeding and Reproduction of Shaanxi ProvinceCollege of Animal Science and TechnologyNorthwest A&F UniversityYangling 712100China State Key Laboratory of Grassland Agro-ecosystems Key Laboratory of Grassland Livestock Industry InnovationMinistry of Agriculture and Rural AffairsEngineering Research Center of Grassland IndustryMinistry of EducationCollege of Pastoral Agriculture Science and TechnologyLanzhou UniversityLanzhou 730020China State Key Laboratory of Sheep Genetic Improvement and Healthy Production Xinjiang Academy of Agricultural and Reclamation SciencesShihezi 832000China Faculty of Animal Science and Technology Yunan Agricultural UniversityKunming 650201China Key Laboratory of Genetics Breeding and Reproduction of Grass feeding livestock Ministry of AgricultureAnimal Biotechnology Research InstituteXinjiang Academy of Animal ScienceUrumqi 830026China State Key Laboratory of Molecular Developmental Biology Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China

The Y chromosome plays key roles in male fertility and reflects the evolutionary history of paternal ***,we present a de novo genome assembly of the Hu sheep with the first draft assembly of ovine Y chromosome(o MSY),using nanopore sequencing and Hi-C *** o MSY that we generated spans 10.6 Mb from which 775 Y-SNPs were identified by applying a large panel of whole genome sequences from worldwide sheep and wild Iranian *** major paternal lineages(HY1a,HY1b and HY2)were defined across domestic sheep,of which HY2 was newly ***,HY2 forms a monophyletic clade with the Iranian mouflons and is highly divergent from both HY1a and *** analysis of Y chromosomes,mitochondrial and nuclear genomes confirmed that HY2 and the maternal counterpart of lineage C represented a distinct wild mouflon population in Iran that diverge from the direct ancestor of domestic sheep,the wild mouflons in Southeastern *** results suggest that wild Iranian mouflons had introgressed into domestic sheep and thereby introduced this Iranian mouflon specific lineage carrying HY2 to both East Asian and Africa sheep populations.

关键词： Y chromosome sheep paternal lineage introgression de novo assembly

An atlas of CNV maps in cattle, goat and sheep

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Science China(life Sciences) 2021年第10期64卷 1747-1764页

作者： Yongzhen Huang Yunjia li Xihong Wang Jiantao Yu Yudong Cai Zhuqing Zheng Ran li Shunjin Zhang Ningbo Chen Hojjat Asadollahpour Nanaei Quratulain Hanif Qiuming Chen Weiwei Fu Chao li Xiukai Cao Guangxian Zhou Shudong liu Sangang He wenrong li Yulin Chen Hong Chen Chuzhao Lei Mingjun liu Yu Jiang College of Animal Science and Technology Northwest A&F UniversityYangling 712100China College of Information Engineering Northwest A&F UniversityYangling 712100China Key Laboratory of Genetics Breeding and Reproduction of Grass feeding livestock Ministry of AgricultureBiotechnology Research InstituteXinjiang Academy of Animal SciencesUrumqi 830026China National Institute for Biotechnology and Genetic Engineering(NIBGE) Faisalabad 577PunjabPakistan Pakistan Institute of Engineering&Applied Sciences(PIEAS) Nilore 45650IslamabadPakistan

Copy number variation(CNV)is the most prevalent type of genetic structural variation that has been recognized as an important source of phenotypic variation in humans,animals and ***,the mechanisms underlying the evolution of CNVs and their function in natural or artificial selection remain ***,we generated CNV region(CNVR)datasets which were diverged or shared among cattle,goat,and sheep,including 886 individuals from 171 diverse *** 9 environmental factors for genome-wide association study(GWAS),we identified a series of candidate CNVRs,including genes relating to immunity,tick resistance,multi-drug resistance,and muscle *** number of CNVRs shared between species is significantly higher than expected(P<0.00001),and these CNVRs may be more persist than the single nucleotide polymorphisms(SNPs)shared between *** also identified genomic regions under long-term balancing selection and uncovered the potential diversity of the selected CNVRs close to the important functional *** study provides the evidence that balancing selection might be more common in mammals than previously considered,and might play an important role in the daily activities of these ruminant species.

关键词： copy number variation species-shared balancing selection ruminant livestock

A mutation in the type Ⅱ hair keratin KRT86 gene in a Han family with monilethrix

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The Journal of Biomedical Research 2011年第1期25卷 49-55页

作者： Jin Wu, Yongli lin, wenrong Xu, Zhongming li, Weixin Fan Department of Dermatology, the First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu 210029, China Department of Dermatology the First Affiliated Hospital of Nanjing Medical University Nanjing Jiangsu 210029 China.

Monilethrix, a congenital disease of hair, is usually associated with mutations in keratin genes, like KRT81, KRT83 and KRT86. We conducted this study to investigate the mutation of type Ⅱ human basic hair keratin hHb/ KRT gene in a Han family with monilethrix and obtain information for potential pathogenic mechanism study of monilethrix. Peripheral blood samples were drawn for genomic DNA detection. Exon 1 and exon 7 of the KRT81, KRT83 and KRT86 genes were amplified by PCR. All PCR products were sequenced directly using an ABI 310 DNA sequencer. These sequences were aligned with the standard sequences in GenBank using the BLAST software. PCR products were digested with restriction endonuclease and restriction fragment length polymorphism (RFLP) analysis was performed. In this study, we identified one novel mutation, which is a heterozygous transitional mutation of G→A at position 1,289 in exon 7 of the KRT86 gene [R430Q (KRT86)]. RFLP assays for the novel mutation excluded the possibility of polymorphism. The R430Q mutation of the KRT86 gene may be pathogenic for monilethrix. Meanwhile, we did not find any novel mutation or recurrent mutation in exons 1 and 7 of KRT81 and KRT83 and exon 1 of KRT86. There is a potential pathogenic gene in the subjects and our results expand the spectrum of mutations in the hHb6 gene.

关键词： hair diseases keratin monilethrix hHB6 mutation

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金融危机背景下我国海洋经济发展对策探讨

改革与战略 2010年第7期26卷 134-136页

作者：李文荣孙世芳唐山师范学院资源管理系河北唐山063000 河北省社会科学院河北石家庄050051

当前,国际金融危机严重冲击着世界经济的发展,对我国经济的影响也越来越明显。海洋经济由于涉及行业多、范围广,自身具有高投入、高技术、高风险的特点,而且海洋产业多为对外依存度较高的外向型产业,使得我国海洋经济发展面临着更为严... 详细信息

当前,国际金融危机严重冲击着世界经济的发展,对我国经济的影响也越来越明显。海洋经济由于涉及行业多、范围广,自身具有高投入、高技术、高风险的特点,而且海洋产业多为对外依存度较高的外向型产业,使得我国海洋经济发展面临着更为严峻的挑战。为此,文章主要从完善基础设施、拓宽融资渠道、优化资源配置、优化产业结构、调整产业布局、加快海陆互动、加强海洋管理、保护海洋环境等方面提出了在国际金融危机背景下我国海洋经济发展的对策建议。

关键词：金融危机海洋经济发展对策

性别、季节和体型大小对吐鲁番沙虎巢域的影响

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生态学报 2013年第2期33卷 395-401页

作者：李文蓉宋玉成时磊新疆农业大学动物科学学院乌鲁木齐830052 上海师范大学生命与环境科学学院上海200234 中南林业科技大学野生动植物保护研究所长沙410004

2008年6月份至2009年5月份对吐鲁番沙虎的巢域进行调查:2008年6月份至2008年8月份为繁殖季节(RS),2008年9月份至2009年5月份(冬眠期除外)为非繁殖季节(NRS)。利用截趾标志重捕法研究吐鲁番沙虎的巢域,共标记283只吐鲁番沙虎,累计繁殖季... 详细信息

2008年6月份至2009年5月份对吐鲁番沙虎的巢域进行调查:2008年6月份至2008年8月份为繁殖季节(RS),2008年9月份至2009年5月份(冬眠期除外)为非繁殖季节(NRS)。利用截趾标志重捕法研究吐鲁番沙虎的巢域,共标记283只吐鲁番沙虎,累计繁殖季节24只,非繁殖季节43只重捕超过3次(其中13只个体在繁殖季节和非繁殖季节均够3次以上捕捉次数,为重复个体),可以用于计算个体巢域面积数据。利用软件MapGis计算最小凸多边形法(MCP)巢域面积,并分析性别、体型大小、季节等因素对巢域的影响。结果表明:吐鲁番沙虎非繁殖季节雄性、雌性与幼体各组间的巢域面积差异均显著,繁殖季节巢域面积差异不显著;雌雄个体不同季节或全年合并比较巢域面积差异性均不显著;非繁殖季节面积与吻肛长(SVL)显著相关、全年成体组的巢域面积与吻肛长显著相关;成体巢域面积季节差异显著(U=41,P=0.046),幼体则没有季节差异(U=159,P=0.537)。因而,吐鲁番沙虎的巢域大小受性别因素影响不大,体型大小对巢域面积有显著影响,由于繁殖、食物资源等的季节变化是影响吐鲁番沙虎巢域最重要的因素。

关键词：吐鲁番沙虎巢域性别季节体型大小

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试论棉花物流组织的创新与发展

改革与战略 2009年第3期25卷 141-142,164页

作者：李文荣李文侠唐山师范学院资源管理系河北唐山063000 北京中棉机械成套设备有限公司北京100089

棉花物流组织是以棉花物流运作和管理为核心的实体性组织,是关系棉花物流效率的重要因素。文章阐述了棉花物流组织的内涵、类型、特征与作用,总结了我国棉花物流组织中存在的主要问题,并从创新物流组织形态、完善物流组织结构、拓展物... 详细信息

棉花物流组织是以棉花物流运作和管理为核心的实体性组织,是关系棉花物流效率的重要因素。文章阐述了棉花物流组织的内涵、类型、特征与作用,总结了我国棉花物流组织中存在的主要问题,并从创新物流组织形态、完善物流组织结构、拓展物流组织功能、进行组织制度创新、优化整合空间布局、完善相关政策法规等方面提出了棉花物流组织创新发展的对策建议。

关键词：棉花物流组织问题创新对策

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我国棉花物流业的发展现状与对策

农机化研究 2009年第6期31卷 217-220页

作者：李文侠李文荣北京中棉机械成套设备有限公司北京100089 唐山师范学院资源管理系河北唐山063000

棉花产业是关系我国国计民生的重要产业之一,但落后的棉花物流现状制约着我国棉花和棉纺织品在国际市场的竞争力。因此,发展高效率的棉花现代物流是当务之急。首先,分析了我国棉花物流业发展现状,总结了存在的问题;然后,以美国为例,介... 详细信息

棉花产业是关系我国国计民生的重要产业之一,但落后的棉花物流现状制约着我国棉花和棉纺织品在国际市场的竞争力。因此,发展高效率的棉花现代物流是当务之急。首先,分析了我国棉花物流业发展现状,总结了存在的问题;然后,以美国为例,介绍了国外先进国家棉花物流业发展现状;在此基础上,提出了运用供应链理论加强管理,进行物流组织创新,培育棉花物流主体,发展现代物流中心和物流园区,加快信息化建设,推动棉花物流标准化,畅通物流"绿色通道"等对策建议。

关键词：棉花物流业现状问题对策