检索结果-南通市图书馆

The genomic and epigenetic footprint of local adaptation to variable climates in kiwifruit

Horticulture Research 2023年第4期10卷 147-160页

作者： Xu Zhang Rui Guo Ruinan Shen Jacob BLandis Quan Jiang Fang Liu hengchang wang Xiaohong Yao CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical Gardenthe Chinese Academy of SciencesWuhan 430074HubeiChina College of Life Sciences University of Chinese Academy of SciencesBeijing 100049China School of Integrative Plant Science Section of Plant Biology and the L.H.Bailey HortoriumCornell UniversityIthacaNY 14853 USA BTI Computational Biology Center Boyce Thompson InstituteIthacaNY 14853USA

A full understanding of adaptive genetic variation at the genomic level will help address questions of how organisms adapt to diverse *** eriantha is a shade-tolerant species,widely distributed in the southern tropical region of China,occurring in spatially heterogeneous *** the present study we combined population genomic,epigenomic,and environmental association analyses to infer population genetic structure and positive selection across a climatic gradient,and to assess genomic offset to climatic change for *** population structure is strongly shaped by geography and influenced by restricted gene f low resulting from isolation by distance due to habitat *** total,we identified 102 outlier loci and annotated 455 candidate genes associated with the genomic basis of climate adaptation,which were enriched in functional categories related to development processes and stress response;both temperature and precipitation are important factors driving adaptive *** addition to single-nucleotide polymorphisms(SNPs),a total of 27 single-methylation variants(SMVs)had significant correlation with at least one of four climatic variables and 16 SMVswere located in or adjacent to genes,several of whichwere predicted to be involved in plant response to abiotic or biotic *** forest analysis indicated that the central/east populations were predicted to be at higher risk of future population maladaptation under climate *** results demonstrate that local climate factors impose strong selection pressures and lead to local *** information adds to our understanding of adaptive mechanisms to variable climates revealed by both population genome and epigenome analysis.

关键词： local adaptation shaped

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Plastome sequencing of Myripnois dioica and comparison within Asteraceae

引用

Plant Diversity 2019年第5期41卷 315-322页

作者： Nan Lin Xu Zhang Tao Deng Jianwen Zhang Aiping Meng hengchang wang Hang Sun Yanxia Sun CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhanHubei430074China University of Chinese Academy of Sciences Beijing100049China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan650201China

Myripnois is a monotypic shrub genus in the daisy family constricted to northern *** wild populations of Myripnois dioica are relatively rare,this plant may potentially be cultured as a fine *** the present study,we sequenced the complete plastome of ***,generating the first plastome sequences of the subfamily *** plastome of *** has a typical quadripartite circular structure.A large^20-kb and a small^3-kb inversion were detected in the large single copy(LSC)region and shared by other Asteraceae *** phylogenomic analyses based on 78 Asteraceae species and three outgroups revealed four groups,corresponding to four Asteraceae subfamilies:Asteroideae,Cichorioideae,Pertyoideae and *** these four subfamilies,Pertyoideae is sister to Asteroideae+Cichorioideae;Carduoideae is the most basal *** addition,we characterized 13 simple sequence repeats(SSRs)that may be useful in future studies on population genetics.

关键词： Myripnois Asteraceae Plastomes Large inversion Phylogenomic analyses

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genome assembly of the snow lotus species Saussurea involucrata provides insights into acacetin and rutin biosynthesis and tolerance to an alpine environment

引用

Horticulture Research 2023年第10期10卷 8-11页

作者： Yanxia Sun Aidi Zhang Jacob BLandis Wei Shi Xiujun Zhang Hang Sun hengchang wang CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenChinese Academy of SciencesWuhan 430074HubeiChina Center of Conservation Biology Core Botanical GardensChinese Academy of SciencesWuhan 430074HubeiChina Center of Economic Botany Core Botanical GardensChinese Academy of SciencesWuhan 430074HubeiChina BTI Computational Biology Center Boyce Thompson InstituteIthacaNY 14853USA School of Integrative Plant Science Section of Plant Biology and the L.H.Bailey HortoriumCornell UniversityIthacaNY 14853USA Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumchi 830011XinjiangChina Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201YunnanChina

Dear Editor,Understanding the evolution and survival mechanisms of endangered wild medicinal herbs is crucial for their cultivation,utilization,and *** snow lotus species Saussurea involucrata(Kar.&Kir.)***.(2n=32)(*** well-known Tianshan snow lotus)which belongs to the eudicot family Asteraceae,is a famous traditional Chinese medicinal herb having anti-inflammatory.

关键词： Tianshan belongs involucrata

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pleistocene glaciation advances the cryptic speciation of Stellera chamaejasme *** a major biodiversity hotspot

引用

Journal of Integrative Plant Biology 2024年第6期66卷 1192-1205页

作者： Santosh Kumar Rana Hum Kala Rana Jacob BLandis Tianhui Kuang Juntong Chen hengchang wang Tao Deng Charles C.Davis Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China Arkansas Biosciences Institute Arkansas State UniversityJonesboroArkansas 72401USA School of Integrative Plant Science Section of Plant Biology and the L.H.Bailey HortoriumCornell UniversityIthacaNew York 14853USA BTI Computational Biology Center Boyce Thompson InstituteIthacaNew York 14853USA CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Chinese Academy of SciencesWuhan Botanical GardenWuhan 430074China Department of Organismic and Evolutionary Biology HerbariaHarvard UniversityCambridgeMassachusetts 02138USA

The mountains of Southwest China comprise a significant large mountain range and biodiversity hotspot imperiled by global climate *** high species diversity in this mountain system has long been attributed to a complex set of factors,and recent large-scale macroevolutionary investigations have placed a broad timeline on plant diversification that stretches from 10 million years ago(Mya)to the *** our increasing understanding of the temporal mode of speciation,finer-scale populationlevel investigations are lacking to better refine these temporal trends and illuminate the abiotic and biotic influences of cryptic *** is largely due to the dearth of organismal sampling among closely related species and populations,spanning the incredible size and topological heterogeneity of this *** study dives into these evolutionary dynamics of speciation using genomic and ecomorphological data of Stellera chamaejasme *** identified four previously unrecognized cryptic species having indistinct morphological traits and large metapopulation of evolving lineages,suggesting a more recent diversification(~2.67-0.90 Mya),largely influenced by Pleistocene glaciation and biotic *** factors likely influenced allopatric speciation and advocated cyclical warming–cooling episodes along elevational gradients during the *** study refines the evolutionary timeline to be much younger than previously implicated and raises the concern that projected future warming may influence the alpine species diversity,necessitating increased conservation efforts.

关键词： cryptic speciation glacial-interglacial Hengduan Mountains north-south migration Stellera chamaejasme

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Genomic convergence underlying high-altitude adaptation in alpine plants

引用

Journal of Integrative Plant Biology 2023年第7期65卷 1620-1635页

作者： Xu Zhang Tianhui Kuang Wenlin Dong Zhihao Qian Huajie Zhang Jacob BLandis Tao Feng Lijuan Li Yanxia Sun Jinling Huang Tao Deng hengchang wang Hang Sun CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture The Chinese Academy of SciencesWuhan Botanical GardenWuhan 430074China Center of Conservation Biology Core Botanical GardensThe Chinese Academy of SciencesWuhan 430074China Yunnan International Joint Laboratory for Biodiversity of Central Asia Key Laboratory for Plant Diversity and Biogeography of East AsiaKunming Institute of BotanyThe Chinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China School of Integrative Plant Science Section of Plant Biology and the L.H.Bailey HortoriumCornell UniversityIthacaNew York 14850USA BTI Computational Biology Center Boyce Thompson InstituteIthacaNew York 14853USA State Key Laboratory of Crop Stress Adaptation and Improvement School of Life SciencesHenan UniversityKaifeng 475004China Department of Biology East Carolina UniversityGreenvilleNorth Carolina 27858USA

Evolutionary convergence is one of the most striking examples of adaptation driven by natural ***, genomic evidence for convergent adaptation to extreme environments remains ***, we assembled reference genomes of two alpine plants, Saussurea obvallata(Asteraceae)and Rheum alexandrae(Polygonaceae), with 37,938 and 61,463 annotated protein-coding genes. By integrating an additional five alpine genomes,we elucidated genomic convergence underlying high-altitude adaptation in alpine plants. Our results detected convergent contractions of diseaseresistance genes in alpine genomes, which might be an energy-saving strategy for surviving in hostile environments with only a few pathogens *** identified signatures of positive selection on a set of genes involved in reproduction and respiration(e.g., MMD1, NBS1, and HPR), and revealed signatures of molecular convergence on genes involved in self-incompatibility, cell wall modification,DNA repair and stress resistance, which may underlie adaptation to extreme cold, high ultraviolet radiation and hypoxia environments. Incorporating transcriptomic data, we further demonstrated that genes associated with cuticular wax and flavonoid biosynthetic pathways exhibit higher expression levels in leafy bracts, shedding light on the genetic mechanisms of the adaptive “greenhouse” morphology. Our integrative data provide novel insights into convergent evolution at a high-taxonomic level,aiding in a deep understanding of genetic adaptation to complex environments.

关键词： adaptation alpine plants evolutionary rates genomic convergence “greenhouse”morphology high altitude

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Phylogenetic patterns suggest frequent multiple origins of secondary metabolites across the seed-plant ‘tree of life’

引用

National Science Review 2021年第4期8卷 66-77页

作者： Yongzeng Zhang Tao Deng Lu Sun Jacob B.Landis Michael J.Moore hengchang wang Yuehua wang Xiaojiang Hao Jijun Chen Shenghong Li Maonian Xu Pema-Tenzin Puno Peter H.Raven Hang Sun CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences University of the Chinese Academy of Sciences Department of Botany and Plant Sciences University of California Riverside School of Integrative Plant Science Section of Plant Biology and the L.H.Bailey HortoriumCornell University Department of Biology Oberlin College CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Chinese Academy of Sciences School of Life Science Yunnan University State Key Laboratory of Phytochemistry and Plant Resources in West China Kunming Institute of BotanyChinese Academy of Sciences Pharmaceutical Sciences University of Iceland Missouri Botanical Garden

To evaluate the phylogenetic patterns of the distribution and evolution of plant secondary metabolites(PSMs), we selected 8 classes of PSMs and mapped them onto an updated phylogenetic tree including 437 families of seed plants. A significant phylogenetic signal was detected in 17 of the 18 tested seed-plant clades for at least 1 of the 8 PSM classes using the D statistic. The phylogenetic signal, nevertheless, indicated weak clustering of PSMs compared to a random distribution across all seed plants. The observed signal suggests strong diversifying selection during seed-plant evolution and/or relatively weak evolutionary constraints on the evolution of PSMs. In the survey of the current phylogenetic distributions of PSMs, we found that multiple origins of PSM biosynthesis due to external selective forces for diverse genetic pathways may have played important roles. In contrast, a single origin of PSMs seems rather uncommon. The distribution patterns for PSMs observed in this study may also be useful in the search for natural compounds for medicinal purposes.

关键词： secondary metabolites phylogenetic tree phylogenetic signal co-diversification evolution bioprospecting seed plants

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

聚羧酸系超塑化剂合成及其对水泥基材料性能的影响(英文)

引用

硅酸盐学报 2008年第7期36卷 884-889页

作者：李顺文梓芸王恒昌华南理工大学材料科学与工程学院特种功能材料教育部重点实验室广州510640

采用酯化工艺合成了一种含聚氧化乙烯基的聚乙二醇单甲醚单甲基丙烯酸酯,以该单体和甲基丙烯酸、2-丙烯酰胺-2-甲基丙磺酸、丙烯酸乙酯、丙烯酰胺等单体合成了聚羧酸系超塑化剂。用红外光谱和凝胶渗透色谱表征了其分子结构及分子量分布... 详细信息

采用酯化工艺合成了一种含聚氧化乙烯基的聚乙二醇单甲醚单甲基丙烯酸酯,以该单体和甲基丙烯酸、2-丙烯酰胺-2-甲基丙磺酸、丙烯酸乙酯、丙烯酰胺等单体合成了聚羧酸系超塑化剂。用红外光谱和凝胶渗透色谱表征了其分子结构及分子量分布,研究了聚羧酸系超塑化剂对水泥基材料的分散性、分散保持能力及抗压强度的影响,用zeta电位法讨论了其分散和分散稳定作用机理。结果表明:所合成的聚羧酸系超塑化剂有利于水泥强度的稳定发展,具有良好的分散保持能力,其分散性及分散保持能力与聚合单体的摩尔比、官能团种类和聚氧化乙烯侧链的长度有关。聚羧酸系超塑化剂的掺量(质量分数)为0.3%时,90min内水泥净浆流动度保持率高达98.1%。

关键词：聚羧酸系超塑化剂合成参数分子量及其分布分散性分散保持能力

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

一节数学公开课引发的热议

引用

科教导刊 2011年第16期 112-112,133页

作者：王恒昌苏州市平江中学校江苏苏州215003

将新课程理念真正植根于教师头脑,落实到课堂中,还需要教师不断的实践与探索。本文通过一个教学案例,从实践的角度提出了一些教学思考。

关键词：数学公开课热议

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

碱渣用作砂浆保水剂的试验研究

引用

材料导报 2017年第20期31卷 114-118页

作者：杨医博普永强严卫军郭文瑛王恒昌华南理工大学土木与交通学院广州510640 华南理工大学亚热带建筑科学国家重点实验室广州510640

碱渣是氨碱法制纯碱排出的废渣,其堆存和排放造成严重的环境问题。通过对原状碱渣采取工艺处理得到较低氯离子含量的水洗碱渣和除氯碱渣,研究了原状碱渣、水洗碱渣、除氯碱渣应用于砂浆时对其性能的影响及除氯碱渣用作砂浆保水剂的可行... 详细信息

碱渣是氨碱法制纯碱排出的废渣,其堆存和排放造成严重的环境问题。通过对原状碱渣采取工艺处理得到较低氯离子含量的水洗碱渣和除氯碱渣,研究了原状碱渣、水洗碱渣、除氯碱渣应用于砂浆时对其性能的影响及除氯碱渣用作砂浆保水剂的可行性。结果表明,各类碱渣取代15%粉煤灰均有利于提高砂浆的保水性,但原状碱渣及水洗一次碱渣掺入砂浆后氯离子溶出含量偏高,可能造成耐久性问题;而除氯碱渣不会有耐久性问题,可以作为砂浆保水剂。除氯碱渣用作砂浆保水剂使用时,砂浆具有良好的保水性能、力学性能和较低的干缩值。其较佳的应用方式为:碱渣取代胶凝材料中的部分粉煤灰,在不改变水胶比的前提下,加入减水剂来调节砂浆稠度,无需复合有机保水剂。

关键词：碱渣氯离子砂浆保水剂

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

渗透数学文化彰显数学魅力

引用

当代教研论丛 2020年第6期7卷 68-69页

作者：王恒昌苏州市平江中学校江苏苏州215128

数学文化是人类文化的重要组成部分,教师应从专业发展的角度,认真开展数学文化内涵的研究,并通过教学实践营造出充满着数学文化气息的课堂新生态,使数学文化最终成为留给学生的宝贵财富和重要印记,提升学生的数学素养。

关键词：数学教学数学文化数学素养

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：