In vivo effects of γ-irradiation on the functional architecture of the lampbrush chromosomes in Pleurodeles (Amphibia, Urodela)
Identifieur interne : 001251 ( Istex/Corpus ); précédent : 001250; suivant : 001252In vivo effects of γ-irradiation on the functional architecture of the lampbrush chromosomes in Pleurodeles (Amphibia, Urodela)
Auteurs : M. T. LoonesSource :
- Chromosoma [ 0009-5915 ] ; 1979-08-01.
Abstract
Abstract: In vivo irradiation of ovaries of Pleurodeles poireti by γ-rays leads to structural rearrangement of lampbrush chromosomes in late vitellogenic oocytes (stages V and VI). The loops collapse into the chromomeres and the axes condense. Doses between 200 and 2,000 rads have been tested. We observed that such changes were dependent on the irradiation dose though the chronological order of the events was irrespective of the dose. The maximum effect was attained about 10 h after irradiation. The alterations are totally reversible. Over a period of 3 days, chromosomes gradually relax, regenerate loops and recover their normal appearance. In mid vitellogenic oocytes (stages III and IV) lampbrush chromosomes do not undergo radiation induced alterations. It seems that only full-grown oocytes are competent to respond to the ionizing-flow.
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DOI: 10.1007/BF00288697
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Loones</name><affiliation><mods:affiliation>Laboratoire de Génétique du Développement, Université Pierre et Marie Curie, Centre de Cytologie Expérimentale du C.N.R.S., 67, Rue Maurice Günsbourg, 94200, Ivry sur Seine, France</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:492B4A554FEC3C699AE2B2A609838B9E49E499E0</idno><date when="1979" year="1979">1979</date><idno type="doi">10.1007/BF00288697</idno><idno type="url">https://api.istex.fr/document/492B4A554FEC3C699AE2B2A609838B9E49E499E0/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">001251</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">001251</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a" type="main" xml:lang="en">In vivo effects of γ-irradiation on the functional architecture of the lampbrush chromosomes in Pleurodeles (Amphibia, Urodela)</title><author><name sortKey="Loones, M T" sort="Loones, M T" uniqKey="Loones M" first="M. T." last="Loones">M. T. Loones</name><affiliation><mods:affiliation>Laboratoire de Génétique du Développement, Université Pierre et Marie Curie, Centre de Cytologie Expérimentale du C.N.R.S., 67, Rue Maurice Günsbourg, 94200, Ivry sur Seine, France</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">Chromosoma</title><title level="j" type="abbrev">Chromosoma</title><idno type="ISSN">0009-5915</idno><idno type="eISSN">1432-0886</idno><imprint><publisher>Springer-Verlag</publisher><pubPlace>Berlin/Heidelberg</pubPlace><date type="published" when="1979-08-01">1979-08-01</date><biblScope unit="volume">73</biblScope><biblScope unit="issue">3</biblScope><biblScope unit="page" from="357">357</biblScope><biblScope unit="page" to="368">368</biblScope></imprint><idno type="ISSN">0009-5915</idno></series><idno type="istex">492B4A554FEC3C699AE2B2A609838B9E49E499E0</idno><idno type="DOI">10.1007/BF00288697</idno><idno type="ArticleID">BF00288697</idno><idno type="ArticleID">Art7</idno></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0009-5915</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: In vivo irradiation of ovaries of Pleurodeles poireti by γ-rays leads to structural rearrangement of lampbrush chromosomes in late vitellogenic oocytes (stages V and VI). The loops collapse into the chromomeres and the axes condense. Doses between 200 and 2,000 rads have been tested. We observed that such changes were dependent on the irradiation dose though the chronological order of the events was irrespective of the dose. The maximum effect was attained about 10 h after irradiation. The alterations are totally reversible. Over a period of 3 days, chromosomes gradually relax, regenerate loops and recover their normal appearance. In mid vitellogenic oocytes (stages III and IV) lampbrush chromosomes do not undergo radiation induced alterations. It seems that only full-grown oocytes are competent to respond to the ionizing-flow.</div></front></TEI><istex><corpusName>springer</corpusName><author><json:item><name>M. T. Loones</name><affiliations><json:string>Laboratoire de Génétique du Développement, Université Pierre et Marie Curie, Centre de Cytologie Expérimentale du C.N.R.S., 67, Rue Maurice Günsbourg, 94200, Ivry sur Seine, France</json:string></affiliations></json:item></author><articleId><json:string>BF00288697</json:string><json:string>Art7</json:string></articleId><language><json:string>eng</json:string></language><originalGenre><json:string>OriginalPaper</json:string></originalGenre><abstract>Abstract: In vivo irradiation of ovaries of Pleurodeles poireti by γ-rays leads to structural rearrangement of lampbrush chromosomes in late vitellogenic oocytes (stages V and VI). The loops collapse into the chromomeres and the axes condense. Doses between 200 and 2,000 rads have been tested. We observed that such changes were dependent on the irradiation dose though the chronological order of the events was irrespective of the dose. The maximum effect was attained about 10 h after irradiation. The alterations are totally reversible. Over a period of 3 days, chromosomes gradually relax, regenerate loops and recover their normal appearance. In mid vitellogenic oocytes (stages III and IV) lampbrush chromosomes do not undergo radiation induced alterations. 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ContainsESM="No"><ArticleID>BF00288697</ArticleID><ArticleDOI>10.1007/BF00288697</ArticleDOI><ArticleSequenceNumber>7</ArticleSequenceNumber><ArticleTitle Language="En">In vivo effects of γ-irradiation on the functional architecture of the lampbrush chromosomes in <Emphasis Type="Italic">Pleurodeles</Emphasis> (Amphibia, Urodela)</ArticleTitle><ArticleFirstPage>357</ArticleFirstPage><ArticleLastPage>368</ArticleLastPage><ArticleHistory><RegistrationDate><Year>2004</Year><Month>8</Month><Day>16</Day></RegistrationDate><Received><Year>1979</Year><Month>4</Month><Day>7</Day></Received><Accepted><Year>1979</Year><Month>5</Month><Day>1</Day></Accepted></ArticleHistory><ArticleCopyright><CopyrightHolderName>Springer-Verlag</CopyrightHolderName><CopyrightYear>1979</CopyrightYear></ArticleCopyright><ArticleGrants Type="Regular"><MetadataGrant Grant="OpenAccess"></MetadataGrant><AbstractGrant Grant="OpenAccess"></AbstractGrant><BodyPDFGrant Grant="Restricted"></BodyPDFGrant><BodyHTMLGrant Grant="Restricted"></BodyHTMLGrant><BibliographyGrant Grant="Restricted"></BibliographyGrant><ESMGrant Grant="Restricted"></ESMGrant></ArticleGrants><ArticleContext><JournalID>412</JournalID><VolumeIDStart>73</VolumeIDStart><VolumeIDEnd>73</VolumeIDEnd><IssueIDStart>3</IssueIDStart><IssueIDEnd>3</IssueIDEnd></ArticleContext></ArticleInfo><ArticleHeader><AuthorGroup><Author AffiliationIDS="Aff1"><AuthorName DisplayOrder="Western"><GivenName>M.</GivenName><GivenName>T.</GivenName><FamilyName>Loones</FamilyName></AuthorName></Author><Affiliation ID="Aff1"><OrgDivision>Laboratoire de Génétique du Développement</OrgDivision><OrgName>Université Pierre et Marie Curie, Centre de Cytologie Expérimentale du C.N.R.S.</OrgName><OrgAddress><Street>67, Rue Maurice Günsbourg</Street><Postcode>94200</Postcode><City>Ivry sur Seine</City><Country>France</Country></OrgAddress></Affiliation></AuthorGroup><Abstract ID="Abs1" Language="En"><Heading>Abstract</Heading><Para>In vivo irradiation of ovaries of <Emphasis Type="Italic">Pleurodeles poireti</Emphasis> by <Emphasis Type="Italic">γ</Emphasis>-rays leads to structural rearrangement of lampbrush chromosomes in late vitellogenic oocytes (stages V and VI). The loops collapse into the chromomeres and the axes condense. Doses between 200 and 2,000 rads have been tested. We observed that such changes were dependent on the irradiation dose though the chronological order of the events was irrespective of the dose. The maximum effect was attained about 10 h after irradiation. The alterations are totally reversible. Over a period of 3 days, chromosomes gradually relax, regenerate loops and recover their normal appearance. In mid vitellogenic oocytes (stages III and IV) lampbrush chromosomes do not undergo radiation induced alterations. It seems that only full-grown oocytes are competent to respond to the ionizing-flow.</Para></Abstract></ArticleHeader><NoBody></NoBody></Article></Issue></Volume></Journal></Publisher></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>In vivo effects of γ-irradiation on the functional architecture of the lampbrush chromosomes in Pleurodeles (Amphibia, Urodela)</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>In vivo effects of γ-irradiation on the functional architecture of the lampbrush chromosomes in Pleurodeles (Amphibia, Urodela)</title></titleInfo><name type="personal"><namePart type="given">M.</namePart><namePart type="given">T.</namePart><namePart type="family">Loones</namePart><affiliation>Laboratoire de Génétique du Développement, Université Pierre et Marie Curie, Centre de Cytologie Expérimentale du C.N.R.S., 67, Rue Maurice Günsbourg, 94200, Ivry sur Seine, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="OriginalPaper"></genre><originInfo><publisher>Springer-Verlag</publisher><place><placeTerm type="text">Berlin/Heidelberg</placeTerm></place><dateCreated encoding="w3cdtf">1979-04-07</dateCreated><dateIssued encoding="w3cdtf">1979-08-01</dateIssued><copyrightDate encoding="w3cdtf">1979</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><internetMediaType>text/html</internetMediaType></physicalDescription><abstract lang="en">Abstract: In vivo irradiation of ovaries of Pleurodeles poireti by γ-rays leads to structural rearrangement of lampbrush chromosomes in late vitellogenic oocytes (stages V and VI). The loops collapse into the chromomeres and the axes condense. Doses between 200 and 2,000 rads have been tested. We observed that such changes were dependent on the irradiation dose though the chronological order of the events was irrespective of the dose. The maximum effect was attained about 10 h after irradiation. The alterations are totally reversible. Over a period of 3 days, chromosomes gradually relax, regenerate loops and recover their normal appearance. In mid vitellogenic oocytes (stages III and IV) lampbrush chromosomes do not undergo radiation induced alterations. 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