检索结果-南通市图书馆

A Microarray Based Genomic Hybridization Method for Identification of new genes in Plants：Case Analyses of Arabidopsis and Oryza

引用

Journal of Integrative Plant Biology 2007年第6期49卷 915-926页

作者： Chuanzhu Fan Maria D. Vibranovski Ying Chen Manyuan Long Department of Ecology and Evolution The University of Chicago Chicago IL 60637 USA

To systematically estimate the gene duplication events In closely related species, we have to use comparative genomlc approaches, either through genomlc sequence comparison or comparative genomlc hybridization （CGH）. Given the scarcity of complete genomlc sequences of plant species, in the present study we adopted an array based CGH to Investigate gene duplications In the genus Arabldopsls. Fragment genomlc DNA from four species, namely Arabidopsls thallana, A. lyrata subsp, lyrata, A. lyrata subsp, petraea, and A. halleri, was hybridized to Affymetrlx （Santa Clara, CA, USA） tiling arrays that are designed from the genomlc sequences of A. thallana. Pairwlse comparisons of signal intensity were made to infer the potential duplicated candidates along each phylogenetic branch. Ninety-four potential candidates of gene duplication along the genus were Identified. Among them, the majority （69 of 94） were A. thallana lineage specific. This result indicates that the array based CGH approach may be used to Identify candidates of duplication In other plant genera containing closely related species, such as Oryza, particularly for the AA genome species. We compared the degree of gene duplication through retrotransposon between O. satlva and A. thallana and found a strikingly higher number of chimera retroposed genes In rice. The higher rate of gene duplication through retroposltlon and other mechanisms may Indicate that the grass species Is able to adapt to more diverse environments.

关键词： Arabidopsis comparative genomic hybridization microarray new genes Oryza retroposition.

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

new genes and Evolution of Behaviors in Drosophila

New Genes and Evolution of Behaviors in Drosophila

引用

“基因、进化与生理功能多样性”海内外学术研讨会暨中国生理学会第七届比较生理学学术会议

作者：龙漫远 Department of Ecology and Evolution The University of ChicagoChicagoUSA

How genetic systems that control behaviors evolve remain an important but little explored *** identified young genes that originated within 2-4 million years in a few Drosophila sibling species that participated in the behavior *** the genomic background evolved little in the history of these new genes,it is possible to create ancestral genotypes experimentally using knockout or knockdown *** the silenced expression of these young genes,the behavior phenotypes of the mutants are proxy to the ancient behaviors that could exist in the ancestral species before the new genes originated. A comparison between the ancient behaviors and the behaviors of wild type in the extant species would allow recapitulation of the evolutionary process of the behavior phenotypes. We will take several case analyses of new behavior genes to interpret this approach to the understanding of behavior evolution. We will show that this evolutionary process of behaviors were the one under positive Darwinian selection that will help the organisms better adapted to the *** will also show the consequences of the evolution of the genetic control by the participation of new behavior genes is to contribute the behavior diversity within-and between-species.

关键词： new genes Behavior evolution Foraging behaviors Courtship behaviors

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Ruminant-specific genes identified using high-quality genome data and their roles in rumen evolution

引用

Science Bulletin 2022年第8期67卷 825-835,M0004页

作者： Chunyan Chen Yuan Yin Haorong Li Botong Zhou Jiong Zhou Xiaofang Zhou Zhipeng Li Guichun Liu Xiangyu Pan Ru Zhang Zeshan Lin Lei Chen Qiang Qiu Yong E.Zhang Wen Wang School of Ecology and Environment Northwestern Polytechnical UniversityXi’an 710072China College of Animal Science and Technology Jilin Agricultural UniversityChangchun 130118China State Key Laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of SciencesKunming 650223China Department of Gastroenterology Guangdong Provincial People’s HospitalGuangdong Academy of Medical SciencesGuangzhou 510080China Guangdong Cardiovascular Institute Guangzhou 510080China Key Laboratory of Zoological Systematics and Evolution Institute of ZoologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Center for Excellence in Animal Evolution and Genetics Chinese Academy of SciencesKunming 650223China

Ruminants comprise a highly successful group of mammals with striking morphological innovations,including the presence of a *** studies have shown that species-specific or lineage-specific genes(referred to as new genes)play important roles in phenotypic *** this study,we identified 1064 ruminant-specific genes based on the newly assembled high-quality genomes of representative members of two ruminant families and other publically available high-quality *** genes shared similar evolutionary and expression patterns with new genes found in other mammals,such as primates and *** new genes were derived from gene duplication and tended to be expressed in the testes or immune-related tissues,but were depleted in the adult *** also found that most genes expressed in the rumen were genes predating sheep–sperm whale split(referred to as old genes),but some new genes were also involved in the evolution of the rumen,and contributed more during rumen development than in the adult ***,expression levels of members of the ruminant-specific PRD-SPRRII gene family,which are subject to positive selection,varied throughout rumen development and may thus play important roles in the development of the keratin-rich surface of the ***,this study generated two novel ruminant genomes and also provided novel insights into the evolution of new mammalian organs.

关键词： Ruminant High-quality ruminant genome new genes Rumen new organ evolution

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

The nearly complete assembly of the Cercis chinensis genome and Fabaceae phylogenomic studies provide insights into new gene evolution

引用

Plant Communications 2023年第1期4卷 28-41页

作者： Jinglong Li Jingting Shen Rui Wang Yamao Chen Taikui Zhang Haifeng Wang Chunce Guo Ji Qi State Key Laboratory of Genetic Engineering Institute of Plant BiologySchool of Life SciencesFudan UniversityShanghai 200433China College of Agriculture Guangxi UniversityNanning 530004China Jiangxi Provincial Key Laboratory for Bamboo Germplasm Resources and Utilization Forestry CollegeJiangxi Agricultural UniversityNanchang 330045China

Fabaceae is a large family of angiosperms with high biodiversity that contains a variety of economically important crops and model plants for the study of biological nitrogen *** events have been extensively studied in some Fabaceae plants,but the occurrence of new genes is still concealed,owing to a lack of genomic information on certain species of the basal clade of *** chinensis(Cercidoideae)is one such species;it diverged earliest from Fabaceae and is essential for phylogenomic studies and new gene predictions in *** facilitate genomic studies on Fabaceae,we performed genome sequencing of *** and obtained a 352.84 Mb genome,which was further assembled into seven pseudochromosomes with 30612 predicted protein-coding *** with other legume genomes,that of *** exhibits no lineage-specific polyploidization *** phylogenomic analyses of 22 legumes and 11 other angiosperms revealed that many gene families are lineage specific before and after the diversification of *** them,dozens of genes are candidates for new genes that have evolved from intergenic regions and are thus regarded as de novo-originated *** differ significantly from established genes in coding sequence length,exon number,guanine–cytosine content,and expression patterns among *** analysis revealed that many new genes are related to asparagine *** study represents an important advance in understanding the evolutionary pattern of new genes in legumes and provides a valuable resource for plant phylogenomic studies.

关键词： Cercis chinensis complete genome new genes Fabaceae phylogenomics

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

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

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

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：