Abnormal meiosis in an intersectional allotriploid of Populus L. and segregation of ploidy levels in 2x × 3x progeny.
Identifieur interne : 001544 ( Main/Exploration ); précédent : 001543; suivant : 001545Abnormal meiosis in an intersectional allotriploid of Populus L. and segregation of ploidy levels in 2x × 3x progeny.
Auteurs : Jun Wang [République populaire de Chine] ; Beibei Huo [République populaire de Chine] ; Wanting Liu [République populaire de Chine] ; Daili Li [République populaire de Chine] ; Ling Liao [République populaire de Chine]Source :
- PloS one [ 1932-6203 ] ; 2017.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Chromosomes de plante, Méiose, Pollen, Populus, Ségrégation des chromosomes.
- méthodes : Sélection.
- Aneuploïdie, Diploïdie, Ploïdies, Triploïdie, Tétraploïdie.
English descriptors
- KwdEn :
- MESH :
- genetics : Chromosome Segregation, Chromosomes, Plant, Meiosis, Pollen, Populus.
- methods : Breeding.
- Aneuploidy, Diploidy, Ploidies, Tetraploidy, Triploidy.
Abstract
Triploid plants are usually highly aborted owing to unbalanced meiotic chromosome segregation, but limited viable gametes can participate in the transition to different ploidy levels. In this study, numerous meiotic abnormalities were found with high frequency in an intersectional allotriploid poplar (Populus alba × P. berolinensis 'Yinzhong'), including univalents, precocious chromosome migration, lagging chromosomes, chromosome bridges, micronuclei, and precocious cytokinesis, indicating high genetic imbalance in this allotriploid. Some micronuclei trigger mini-spindle formation in metaphase II and participate in cytokinesis to form polyads with microcytes. Unbalanced chromosome segregation and chromosome elimination resulted in the formation of microspores with aneuploid chromosome sets. Fusion of sister nuclei occurs in microsporocytes with precocious cytokinesis, which could form second meiotic division restitution (SDR)-type gametes. However, SDR-type gametes likely contain incomplete chromosome sets due to unbalanced segregation of homologous chromosomes during the first meiotic division in triploids. Misorientation of spindles during the second meiotic division, such as fused and tripolar spindles with low frequency, could result in the formation of first meiotic division restitution (FDR)-type unreduced gametes, which most likely contain three complete chromosome sets. Although 'Yinzhong' yields 88.7% stainable pollen grains with wide diameter variation from 23.9 to 61.3 μm, the pollen viability is poor (2.78% ± 0.38). A cross of 'Yinzhong' pollen with a diploid female clone produced progeny with extensive segregation of ploidy levels, including 29 diploids, 18 triploids, 4 tetraploids, and 48 aneuploids, suggesting the formation of viable aneuploidy and unreduced pollen in 'Yinzhong'. Individuals with different chromosome compositions are potential to analyze chromosomal function and to integrate the chromosomal dosage variation into breeding programs of Populus.
DOI: 10.1371/journal.pone.0181767
PubMed: 28732039
PubMed Central: PMC5521839
Affiliations:
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xml:lang="fr">République populaire de Chine</country><wicri:regionArea>Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, MOE, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation><affiliation wicri:level="3"><nlm:affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Biological Sciences and Technology, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author><author><name sortKey="Liao, Ling" sort="Liao, Ling" uniqKey="Liao L" first="Ling" last="Liao">Ling Liao</name><affiliation wicri:level="3"><nlm:affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</nlm:affiliation><country xml:lang="fr">République populaire de Chine</country><wicri:regionArea>College of Biological Sciences and Technology, Beijing Forestry University, Beijing</wicri:regionArea><placeName><settlement type="city">Pékin</settlement></placeName></affiliation></author></analytic><series><title level="j">PloS one</title><idno type="eISSN">1932-6203</idno><imprint><date when="2017" type="published">2017</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aneuploidy (MeSH)</term><term>Breeding (methods)</term><term>Chromosome Segregation (genetics)</term><term>Chromosomes, Plant (genetics)</term><term>Diploidy (MeSH)</term><term>Meiosis (genetics)</term><term>Ploidies (MeSH)</term><term>Pollen (genetics)</term><term>Populus (genetics)</term><term>Tetraploidy (MeSH)</term><term>Triploidy (MeSH)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Aneuploïdie (MeSH)</term><term>Chromosomes de plante (génétique)</term><term>Diploïdie (MeSH)</term><term>Méiose (génétique)</term><term>Ploïdies (MeSH)</term><term>Pollen (génétique)</term><term>Populus (génétique)</term><term>Ségrégation des chromosomes (génétique)</term><term>Sélection (méthodes)</term><term>Triploïdie (MeSH)</term><term>Tétraploïdie (MeSH)</term></keywords><keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Chromosome Segregation</term><term>Chromosomes, Plant</term><term>Meiosis</term><term>Pollen</term><term>Populus</term></keywords><keywords scheme="MESH" qualifier="génétique" xml:lang="fr"><term>Chromosomes de plante</term><term>Méiose</term><term>Pollen</term><term>Populus</term><term>Ségrégation des chromosomes</term></keywords><keywords scheme="MESH" qualifier="methods" xml:lang="en"><term>Breeding</term></keywords><keywords scheme="MESH" qualifier="méthodes" xml:lang="fr"><term>Sélection</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Aneuploidy</term><term>Diploidy</term><term>Ploidies</term><term>Tetraploidy</term><term>Triploidy</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Aneuploïdie</term><term>Diploïdie</term><term>Ploïdies</term><term>Triploïdie</term><term>Tétraploïdie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Triploid plants are usually highly aborted owing to unbalanced meiotic chromosome segregation, but limited viable gametes can participate in the transition to different ploidy levels. In this study, numerous meiotic abnormalities were found with high frequency in an intersectional allotriploid poplar (Populus alba × P. berolinensis 'Yinzhong'), including univalents, precocious chromosome migration, lagging chromosomes, chromosome bridges, micronuclei, and precocious cytokinesis, indicating high genetic imbalance in this allotriploid. Some micronuclei trigger mini-spindle formation in metaphase II and participate in cytokinesis to form polyads with microcytes. Unbalanced chromosome segregation and chromosome elimination resulted in the formation of microspores with aneuploid chromosome sets. Fusion of sister nuclei occurs in microsporocytes with precocious cytokinesis, which could form second meiotic division restitution (SDR)-type gametes. However, SDR-type gametes likely contain incomplete chromosome sets due to unbalanced segregation of homologous chromosomes during the first meiotic division in triploids. Misorientation of spindles during the second meiotic division, such as fused and tripolar spindles with low frequency, could result in the formation of first meiotic division restitution (FDR)-type unreduced gametes, which most likely contain three complete chromosome sets. Although 'Yinzhong' yields 88.7% stainable pollen grains with wide diameter variation from 23.9 to 61.3 μm, the pollen viability is poor (2.78% ± 0.38). A cross of 'Yinzhong' pollen with a diploid female clone produced progeny with extensive segregation of ploidy levels, including 29 diploids, 18 triploids, 4 tetraploids, and 48 aneuploids, suggesting the formation of viable aneuploidy and unreduced pollen in 'Yinzhong'. Individuals with different chromosome compositions are potential to analyze chromosomal function and to integrate the chromosomal dosage variation into breeding programs of Populus.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">28732039</PMID><DateCompleted><Year>2017</Year><Month>09</Month><Day>25</Day></DateCompleted><DateRevised><Year>2018</Year><Month>11</Month><Day>13</Day></DateRevised><Article PubModel="Electronic-eCollection"><Journal><ISSN IssnType="Electronic">1932-6203</ISSN><JournalIssue CitedMedium="Internet"><Volume>12</Volume><Issue>7</Issue><PubDate><Year>2017</Year></PubDate></JournalIssue><Title>PloS one</Title><ISOAbbreviation>PLoS One</ISOAbbreviation></Journal><ArticleTitle>Abnormal meiosis in an intersectional allotriploid of Populus L. and segregation of ploidy levels in 2x × 3x progeny.</ArticleTitle><Pagination><MedlinePgn>e0181767</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1371/journal.pone.0181767</ELocationID><Abstract><AbstractText>Triploid plants are usually highly aborted owing to unbalanced meiotic chromosome segregation, but limited viable gametes can participate in the transition to different ploidy levels. In this study, numerous meiotic abnormalities were found with high frequency in an intersectional allotriploid poplar (Populus alba × P. berolinensis 'Yinzhong'), including univalents, precocious chromosome migration, lagging chromosomes, chromosome bridges, micronuclei, and precocious cytokinesis, indicating high genetic imbalance in this allotriploid. Some micronuclei trigger mini-spindle formation in metaphase II and participate in cytokinesis to form polyads with microcytes. Unbalanced chromosome segregation and chromosome elimination resulted in the formation of microspores with aneuploid chromosome sets. Fusion of sister nuclei occurs in microsporocytes with precocious cytokinesis, which could form second meiotic division restitution (SDR)-type gametes. However, SDR-type gametes likely contain incomplete chromosome sets due to unbalanced segregation of homologous chromosomes during the first meiotic division in triploids. Misorientation of spindles during the second meiotic division, such as fused and tripolar spindles with low frequency, could result in the formation of first meiotic division restitution (FDR)-type unreduced gametes, which most likely contain three complete chromosome sets. Although 'Yinzhong' yields 88.7% stainable pollen grains with wide diameter variation from 23.9 to 61.3 μm, the pollen viability is poor (2.78% ± 0.38). A cross of 'Yinzhong' pollen with a diploid female clone produced progeny with extensive segregation of ploidy levels, including 29 diploids, 18 triploids, 4 tetraploids, and 48 aneuploids, suggesting the formation of viable aneuploidy and unreduced pollen in 'Yinzhong'. Individuals with different chromosome compositions are potential to analyze chromosomal function and to integrate the chromosomal dosage variation into breeding programs of Populus.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Wang</LastName><ForeName>Jun</ForeName><Initials>J</Initials><Identifier Source="ORCID">http://orcid.org/0000-0003-0679-1125</Identifier><AffiliationInfo><Affiliation>Beijing Advanced Innovation Centre for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>National Engineering Laboratory in Tree Breeding, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, MOE, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Huo</LastName><ForeName>Beibei</ForeName><Initials>B</Initials><AffiliationInfo><Affiliation>Beijing Advanced Innovation Centre for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>National Engineering Laboratory in Tree Breeding, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Liu</LastName><ForeName>Wanting</ForeName><Initials>W</Initials><AffiliationInfo><Affiliation>Beijing Advanced Innovation Centre for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>National Engineering Laboratory in Tree Breeding, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Li</LastName><ForeName>Daili</ForeName><Initials>D</Initials><AffiliationInfo><Affiliation>Key Laboratory of Genetics and Breeding in Forest Trees and Ornamental Plants, MOE, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo><AffiliationInfo><Affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Liao</LastName><ForeName>Ling</ForeName><Initials>L</Initials><AffiliationInfo><Affiliation>College of Biological Sciences and Technology, Beijing Forestry University, Beijing, People's Republic of China.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2017</Year><Month>07</Month><Day>21</Day></ArticleDate></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>PLoS One</MedlineTA><NlmUniqueID>101285081</NlmUniqueID><ISSNLinking>1932-6203</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000782" MajorTopicYN="N">Aneuploidy</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001947" MajorTopicYN="N">Breeding</DescriptorName><QualifierName UI="Q000379" MajorTopicYN="N">methods</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D020090" MajorTopicYN="N">Chromosome Segregation</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032461" MajorTopicYN="N">Chromosomes, Plant</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D004171" MajorTopicYN="N">Diploidy</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008540" MajorTopicYN="N">Meiosis</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D011003" MajorTopicYN="N">Ploidies</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011058" MajorTopicYN="N">Pollen</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D032107" MajorTopicYN="N">Populus</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="Y">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D057891" MajorTopicYN="N">Tetraploidy</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D057885" MajorTopicYN="N">Triploidy</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2017</Year><Month>04</Month><Day>13</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2017</Year><Month>07</Month><Day>06</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2017</Year><Month>7</Month><Day>22</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate 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Chine</li></country><settlement><li>Pékin</li></settlement></list><tree><country name="République populaire de Chine"><noRegion><name sortKey="Wang, Jun" sort="Wang, Jun" uniqKey="Wang J" first="Jun" last="Wang">Jun Wang</name></noRegion><name sortKey="Huo, Beibei" sort="Huo, Beibei" uniqKey="Huo B" first="Beibei" last="Huo">Beibei Huo</name><name sortKey="Huo, Beibei" sort="Huo, Beibei" uniqKey="Huo B" first="Beibei" last="Huo">Beibei Huo</name><name sortKey="Huo, Beibei" sort="Huo, Beibei" uniqKey="Huo B" first="Beibei" last="Huo">Beibei Huo</name><name sortKey="Li, Daili" sort="Li, Daili" uniqKey="Li D" first="Daili" last="Li">Daili Li</name><name sortKey="Li, Daili" sort="Li, Daili" uniqKey="Li D" first="Daili" last="Li">Daili Li</name><name sortKey="Liao, Ling" sort="Liao, Ling" uniqKey="Liao L" first="Ling" last="Liao">Ling Liao</name><name sortKey="Liu, Wanting" sort="Liu, Wanting" uniqKey="Liu W" first="Wanting" last="Liu">Wanting Liu</name><name sortKey="Liu, Wanting" sort="Liu, Wanting" uniqKey="Liu W" first="Wanting" last="Liu">Wanting Liu</name><name sortKey="Liu, Wanting" sort="Liu, Wanting" uniqKey="Liu W" first="Wanting" last="Liu">Wanting Liu</name><name sortKey="Wang, Jun" sort="Wang, Jun" uniqKey="Wang J" first="Jun" last="Wang">Jun Wang</name><name sortKey="Wang, Jun" sort="Wang, Jun" uniqKey="Wang J" first="Jun" last="Wang">Jun Wang</name><name sortKey="Wang, Jun" sort="Wang, Jun" uniqKey="Wang J" first="Jun" last="Wang">Jun Wang</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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