Vanessa Susan Pinheiro Figliuolo, Alex Matheus Viana Ferreira, Erika Milena Corrêa Guimarães, José Francisco de Sousa E Souza, Eliana Feldberg, Maria Claudia Gross
{"title":"犬齿科犬齿性状染色体末端的隐性多样性(动物物理学:性状)。","authors":"Vanessa Susan Pinheiro Figliuolo, Alex Matheus Viana Ferreira, Erika Milena Corrêa Guimarães, José Francisco de Sousa E Souza, Eliana Feldberg, Maria Claudia Gross","doi":"10.1089/zeb.2020.1973","DOIUrl":null,"url":null,"abstract":"<p><p>The chromosomes of the dogtooth characins, fish species of the family Cynodontidae, have only a relatively small amount of heterochromatin, including the terminal portion. Curiously, in the cynodontid <i>Cynodon gibbus</i>, the terminal portion is rich in repetitive DNAs, including transposable retroelements and microsatellite sequences. Given this, this study investigated the composition of the terminal portion of the chromosomes of two cynodontid species (<i>Rhaphiodon vulpinus</i> and <i>Hydrolycus armatus</i>), to compile a database for the evaluation of all three cynodontid genera, and in particular, verify the possible tendency for the accumulation of repetitive DNAs in the terminal portion of the chromosomes of <i>C. gibbus</i>, <i>H. armatus</i>, and <i>R. vulpinus.</i> The <i>Rex</i>1, <i>Rex</i>3, and <i>Rex</i>6 transposable retroelements and the (CA)<sub>15,</sub> (GA)<sub>15</sub>, (GATA)<sub>8</sub>, (GACA)<sub>8</sub>, (CAT)<sub>10</sub>, and (CAC)<sub>10</sub> microsatellite motifs are found primarily in the terminal portion of the chromosomes of the species analyzed in this study, except <i>R. vulpinus</i>, which has no evidence of the presence of <i>Rex1</i> or <i>Rex3</i> through the fluorescent <i>in situ</i> hybridization technique. The mapping of the repetitive sequences, principally the microsatellite motifs, indicates a marked tendency for the accumulation of these sequences in the terminal portions of the chromosomes, which may have played a fundamental role in the differentiation of the three species.</p>","PeriodicalId":1,"journal":{"name":"Accounts of Chemical Research","volume":null,"pages":null},"PeriodicalIF":16.4000,"publicationDate":"2021-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Cryptic Diversity in the Terminal Portion of the Chromosomes of the Dogtooth Characins, Family Cynodontidae (Ostariophysi: Characiformes).\",\"authors\":\"Vanessa Susan Pinheiro Figliuolo, Alex Matheus Viana Ferreira, Erika Milena Corrêa Guimarães, José Francisco de Sousa E Souza, Eliana Feldberg, Maria Claudia Gross\",\"doi\":\"10.1089/zeb.2020.1973\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>The chromosomes of the dogtooth characins, fish species of the family Cynodontidae, have only a relatively small amount of heterochromatin, including the terminal portion. Curiously, in the cynodontid <i>Cynodon gibbus</i>, the terminal portion is rich in repetitive DNAs, including transposable retroelements and microsatellite sequences. Given this, this study investigated the composition of the terminal portion of the chromosomes of two cynodontid species (<i>Rhaphiodon vulpinus</i> and <i>Hydrolycus armatus</i>), to compile a database for the evaluation of all three cynodontid genera, and in particular, verify the possible tendency for the accumulation of repetitive DNAs in the terminal portion of the chromosomes of <i>C. gibbus</i>, <i>H. armatus</i>, and <i>R. vulpinus.</i> The <i>Rex</i>1, <i>Rex</i>3, and <i>Rex</i>6 transposable retroelements and the (CA)<sub>15,</sub> (GA)<sub>15</sub>, (GATA)<sub>8</sub>, (GACA)<sub>8</sub>, (CAT)<sub>10</sub>, and (CAC)<sub>10</sub> microsatellite motifs are found primarily in the terminal portion of the chromosomes of the species analyzed in this study, except <i>R. vulpinus</i>, which has no evidence of the presence of <i>Rex1</i> or <i>Rex3</i> through the fluorescent <i>in situ</i> hybridization technique. The mapping of the repetitive sequences, principally the microsatellite motifs, indicates a marked tendency for the accumulation of these sequences in the terminal portions of the chromosomes, which may have played a fundamental role in the differentiation of the three species.</p>\",\"PeriodicalId\":1,\"journal\":{\"name\":\"Accounts of Chemical Research\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":16.4000,\"publicationDate\":\"2021-06-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Accounts of Chemical Research\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1089/zeb.2020.1973\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2021/4/12 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Accounts of Chemical Research","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1089/zeb.2020.1973","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2021/4/12 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Cryptic Diversity in the Terminal Portion of the Chromosomes of the Dogtooth Characins, Family Cynodontidae (Ostariophysi: Characiformes).
The chromosomes of the dogtooth characins, fish species of the family Cynodontidae, have only a relatively small amount of heterochromatin, including the terminal portion. Curiously, in the cynodontid Cynodon gibbus, the terminal portion is rich in repetitive DNAs, including transposable retroelements and microsatellite sequences. Given this, this study investigated the composition of the terminal portion of the chromosomes of two cynodontid species (Rhaphiodon vulpinus and Hydrolycus armatus), to compile a database for the evaluation of all three cynodontid genera, and in particular, verify the possible tendency for the accumulation of repetitive DNAs in the terminal portion of the chromosomes of C. gibbus, H. armatus, and R. vulpinus. The Rex1, Rex3, and Rex6 transposable retroelements and the (CA)15, (GA)15, (GATA)8, (GACA)8, (CAT)10, and (CAC)10 microsatellite motifs are found primarily in the terminal portion of the chromosomes of the species analyzed in this study, except R. vulpinus, which has no evidence of the presence of Rex1 or Rex3 through the fluorescent in situ hybridization technique. The mapping of the repetitive sequences, principally the microsatellite motifs, indicates a marked tendency for the accumulation of these sequences in the terminal portions of the chromosomes, which may have played a fundamental role in the differentiation of the three species.
期刊介绍:
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.