Serveur d'exploration sur l'esturgeon

Attention, ce site est en cours de développement !
Attention, site généré par des moyens informatiques à partir de corpus bruts.
Les informations ne sont donc pas validées.

Peculiarities of the embryonic development of Polypodium hydriforme Ussov (Coelenterata), a parasite of acipenserid oocytes.

Identifieur interne : 000535 ( Ncbi/Merge ); précédent : 000534; suivant : 000536

Peculiarities of the embryonic development of Polypodium hydriforme Ussov (Coelenterata), a parasite of acipenserid oocytes.

Auteurs : E V Raikova

Source :

RBID : pubmed:2436971

English descriptors

Abstract

"Unicellular" stages (107 specimens) and multicellular stages (64 specimens) of embryogenesis of Polypodium, found in 14 sterlet (Acipenser ruthenus L.) females, have been studied with light microscopy, cytophotometry, and autoradiography following incubation with 3H-uridine. All stages of the embryonic development occur inside host oocytes. The "unicellular" stage includes a binucleate cell with unequally sized nuclei; separation inside it of a small cell around the smaller nucleus, i.e. transformation of the single cell into a complex of 2 cells, the larger one enveloping the smaller; formation of a cavity inside the nucleus of the large (outer) cell, and migration of the small cell into it, and "cell-in-a-cell" stage, the small (generative) cell being inside the cavity formed by the nucleus of the large (trophic) cell. The latter gives rise to a hypertrophied but still unicellular envelope around the embryo, the trophamnion. The multicellular stages start with segmentation of the generative cell into blastomeres. These form a morula lying inside the cavity of the trophamnion. Gastrulation occurs by morular delamination. The inversion of the germ layers, typical of parasitic Polypodium stages, apparently arises during gastrulation. Both the generative cell ("egg") and the blastomeres are haploid, at least until the morula stage. The eggs of Polypodium are the smallest ones among coelenterates; they lack yolk and develop without fertilization. Diploidy seems to be restored during segmentation. The trophamnion cell grows, its nucleus becomes highly polypoid, and its cytoplasm accumulates mucoprotein inclusions. Both the blastomere nuclei and the trophamnion nucleus have large nucleoli and actively synthesize RNA. The stages of embryogenesis of Polypodium closely correspond to stages of the host oogenesis. The embryonic development of Polypodium lasts several years and is the slowest among coelenterates. However, it has some features typical of the class Hydrozoa.

PubMed: 2436971

Links toward previous steps (curation, corpus...)


Links to Exploration step

pubmed:2436971

Le document en format XML

<record>
<TEI>
<teiHeader>
<fileDesc>
<titleStmt>
<title xml:lang="en">Peculiarities of the embryonic development of Polypodium hydriforme Ussov (Coelenterata), a parasite of acipenserid oocytes.</title>
<author>
<name sortKey="Raikova, E V" sort="Raikova, E V" uniqKey="Raikova E" first="E V" last="Raikova">E V Raikova</name>
</author>
</titleStmt>
<publicationStmt>
<idno type="wicri:source">PubMed</idno>
<date when="1987">1987</date>
<idno type="RBID">pubmed:2436971</idno>
<idno type="pmid">2436971</idno>
<idno type="wicri:Area/PubMed/Corpus">000758</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000758</idno>
<idno type="wicri:Area/PubMed/Curation">000758</idno>
<idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000758</idno>
<idno type="wicri:Area/PubMed/Checkpoint">000758</idno>
<idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000758</idno>
<idno type="wicri:Area/Ncbi/Merge">000535</idno>
</publicationStmt>
<sourceDesc>
<biblStruct>
<analytic>
<title xml:lang="en">Peculiarities of the embryonic development of Polypodium hydriforme Ussov (Coelenterata), a parasite of acipenserid oocytes.</title>
<author>
<name sortKey="Raikova, E V" sort="Raikova, E V" uniqKey="Raikova E" first="E V" last="Raikova">E V Raikova</name>
</author>
</analytic>
<series>
<title level="j">Gegenbaurs morphologisches Jahrbuch</title>
<idno type="ISSN">0016-5840</idno>
<imprint>
<date when="1987" type="published">1987</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc>
<textClass>
<keywords scheme="KwdEn" xml:lang="en">
<term>Animals</term>
<term>Cnidaria (embryology)</term>
<term>DNA (metabolism)</term>
<term>Fishes (parasitology)</term>
<term>Mitosis</term>
<term>Oocytes (parasitology)</term>
<term>RNA (metabolism)</term>
</keywords>
<keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en">
<term>DNA</term>
<term>RNA</term>
</keywords>
<keywords scheme="MESH" qualifier="embryology" xml:lang="en">
<term>Cnidaria</term>
</keywords>
<keywords scheme="MESH" qualifier="parasitology" xml:lang="en">
<term>Fishes</term>
<term>Oocytes</term>
</keywords>
<keywords scheme="MESH" xml:lang="en">
<term>Animals</term>
<term>Mitosis</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front>
<div type="abstract" xml:lang="en">"Unicellular" stages (107 specimens) and multicellular stages (64 specimens) of embryogenesis of Polypodium, found in 14 sterlet (Acipenser ruthenus L.) females, have been studied with light microscopy, cytophotometry, and autoradiography following incubation with 3H-uridine. All stages of the embryonic development occur inside host oocytes. The "unicellular" stage includes a binucleate cell with unequally sized nuclei; separation inside it of a small cell around the smaller nucleus, i.e. transformation of the single cell into a complex of 2 cells, the larger one enveloping the smaller; formation of a cavity inside the nucleus of the large (outer) cell, and migration of the small cell into it, and "cell-in-a-cell" stage, the small (generative) cell being inside the cavity formed by the nucleus of the large (trophic) cell. The latter gives rise to a hypertrophied but still unicellular envelope around the embryo, the trophamnion. The multicellular stages start with segmentation of the generative cell into blastomeres. These form a morula lying inside the cavity of the trophamnion. Gastrulation occurs by morular delamination. The inversion of the germ layers, typical of parasitic Polypodium stages, apparently arises during gastrulation. Both the generative cell ("egg") and the blastomeres are haploid, at least until the morula stage. The eggs of Polypodium are the smallest ones among coelenterates; they lack yolk and develop without fertilization. Diploidy seems to be restored during segmentation. The trophamnion cell grows, its nucleus becomes highly polypoid, and its cytoplasm accumulates mucoprotein inclusions. Both the blastomere nuclei and the trophamnion nucleus have large nucleoli and actively synthesize RNA. The stages of embryogenesis of Polypodium closely correspond to stages of the host oogenesis. The embryonic development of Polypodium lasts several years and is the slowest among coelenterates. However, it has some features typical of the class Hydrozoa.</div>
</front>
</TEI>
<pubmed>
<MedlineCitation Status="MEDLINE" Owner="NLM">
<PMID Version="1">2436971</PMID>
<DateCreated>
<Year>1987</Year>
<Month>06</Month>
<Day>17</Day>
</DateCreated>
<DateCompleted>
<Year>1987</Year>
<Month>06</Month>
<Day>17</Day>
</DateCompleted>
<DateRevised>
<Year>2003</Year>
<Month>11</Month>
<Day>14</Day>
</DateRevised>
<Article PubModel="Print">
<Journal>
<ISSN IssnType="Print">0016-5840</ISSN>
<JournalIssue CitedMedium="Print">
<Volume>133</Volume>
<Issue>1</Issue>
<PubDate>
<Year>1987</Year>
</PubDate>
</JournalIssue>
<Title>Gegenbaurs morphologisches Jahrbuch</Title>
<ISOAbbreviation>Gegenbaurs Morphol Jahrb</ISOAbbreviation>
</Journal>
<ArticleTitle>Peculiarities of the embryonic development of Polypodium hydriforme Ussov (Coelenterata), a parasite of acipenserid oocytes.</ArticleTitle>
<Pagination>
<MedlinePgn>99-121</MedlinePgn>
</Pagination>
<Abstract>
<AbstractText>"Unicellular" stages (107 specimens) and multicellular stages (64 specimens) of embryogenesis of Polypodium, found in 14 sterlet (Acipenser ruthenus L.) females, have been studied with light microscopy, cytophotometry, and autoradiography following incubation with 3H-uridine. All stages of the embryonic development occur inside host oocytes. The "unicellular" stage includes a binucleate cell with unequally sized nuclei; separation inside it of a small cell around the smaller nucleus, i.e. transformation of the single cell into a complex of 2 cells, the larger one enveloping the smaller; formation of a cavity inside the nucleus of the large (outer) cell, and migration of the small cell into it, and "cell-in-a-cell" stage, the small (generative) cell being inside the cavity formed by the nucleus of the large (trophic) cell. The latter gives rise to a hypertrophied but still unicellular envelope around the embryo, the trophamnion. The multicellular stages start with segmentation of the generative cell into blastomeres. These form a morula lying inside the cavity of the trophamnion. Gastrulation occurs by morular delamination. The inversion of the germ layers, typical of parasitic Polypodium stages, apparently arises during gastrulation. Both the generative cell ("egg") and the blastomeres are haploid, at least until the morula stage. The eggs of Polypodium are the smallest ones among coelenterates; they lack yolk and develop without fertilization. Diploidy seems to be restored during segmentation. The trophamnion cell grows, its nucleus becomes highly polypoid, and its cytoplasm accumulates mucoprotein inclusions. Both the blastomere nuclei and the trophamnion nucleus have large nucleoli and actively synthesize RNA. The stages of embryogenesis of Polypodium closely correspond to stages of the host oogenesis. The embryonic development of Polypodium lasts several years and is the slowest among coelenterates. However, it has some features typical of the class Hydrozoa.</AbstractText>
</Abstract>
<AuthorList CompleteYN="Y">
<Author ValidYN="Y">
<LastName>Raikova</LastName>
<ForeName>E V</ForeName>
<Initials>EV</Initials>
</Author>
</AuthorList>
<Language>eng</Language>
<PublicationTypeList>
<PublicationType UI="D016428">Journal Article</PublicationType>
</PublicationTypeList>
</Article>
<MedlineJournalInfo>
<Country>Germany</Country>
<MedlineTA>Gegenbaurs Morphol Jahrb</MedlineTA>
<NlmUniqueID>0370733</NlmUniqueID>
<ISSNLinking>0016-5840</ISSNLinking>
</MedlineJournalInfo>
<ChemicalList>
<Chemical>
<RegistryNumber>63231-63-0</RegistryNumber>
<NameOfSubstance UI="D012313">RNA</NameOfSubstance>
</Chemical>
<Chemical>
<RegistryNumber>9007-49-2</RegistryNumber>
<NameOfSubstance UI="D004247">DNA</NameOfSubstance>
</Chemical>
</ChemicalList>
<CitationSubset>IM</CitationSubset>
<MeshHeadingList>
<MeshHeading>
<DescriptorName UI="D000818" MajorTopicYN="N">Animals</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D003063" MajorTopicYN="N">Cnidaria</DescriptorName>
<QualifierName UI="Q000196" MajorTopicYN="Y">embryology</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D004247" MajorTopicYN="N">DNA</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D005399" MajorTopicYN="N">Fishes</DescriptorName>
<QualifierName UI="Q000469" MajorTopicYN="Y">parasitology</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D008938" MajorTopicYN="N">Mitosis</DescriptorName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D009865" MajorTopicYN="N">Oocytes</DescriptorName>
<QualifierName UI="Q000469" MajorTopicYN="Y">parasitology</QualifierName>
</MeshHeading>
<MeshHeading>
<DescriptorName UI="D012313" MajorTopicYN="N">RNA</DescriptorName>
<QualifierName UI="Q000378" MajorTopicYN="N">metabolism</QualifierName>
</MeshHeading>
</MeshHeadingList>
</MedlineCitation>
<PubmedData>
<History>
<PubMedPubDate PubStatus="pubmed">
<Year>1987</Year>
<Month>1</Month>
<Day>1</Day>
</PubMedPubDate>
<PubMedPubDate PubStatus="medline">
<Year>1987</Year>
<Month>1</Month>
<Day>1</Day>
<Hour>0</Hour>
<Minute>1</Minute>
</PubMedPubDate>
<PubMedPubDate PubStatus="entrez">
<Year>1987</Year>
<Month>1</Month>
<Day>1</Day>
<Hour>0</Hour>
<Minute>0</Minute>
</PubMedPubDate>
</History>
<PublicationStatus>ppublish</PublicationStatus>
<ArticleIdList>
<ArticleId IdType="pubmed">2436971</ArticleId>
</ArticleIdList>
</PubmedData>
</pubmed>
<affiliations>
<list></list>
<tree>
<noCountry>
<name sortKey="Raikova, E V" sort="Raikova, E V" uniqKey="Raikova E" first="E V" last="Raikova">E V Raikova</name>
</noCountry>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Eau/explor/EsturgeonV1/Data/Ncbi/Merge
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000535 | SxmlIndent | more

Ou

HfdSelect -h $EXPLOR_AREA/Data/Ncbi/Merge/biblio.hfd -nk 000535 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Eau
   |area=    EsturgeonV1
   |flux=    Ncbi
   |étape=   Merge
   |type=    RBID
   |clé=     pubmed:2436971
   |texte=   Peculiarities of the embryonic development of Polypodium hydriforme Ussov (Coelenterata), a parasite of acipenserid oocytes.
}}

Pour générer des pages wiki

HfdIndexSelect -h $EXPLOR_AREA/Data/Ncbi/Merge/RBID.i   -Sk "pubmed:2436971" \
       | HfdSelect -Kh $EXPLOR_AREA/Data/Ncbi/Merge/biblio.hfd   \
       | NlmPubMed2Wicri -a EsturgeonV1 

Wicri

This area was generated with Dilib version V0.6.27.
Data generation: Sat Mar 25 15:37:54 2017. Site generation: Tue Feb 13 14:18:49 2024