Combination of chloroplast and mitochondrial DNA polymorphisms to study cytoplasm genetic differentiation in the olive complex (Olea europaea L.).
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| Title: | Combination of chloroplast and mitochondrial DNA polymorphisms to study cytoplasm genetic differentiation in the olive complex (Olea europaea L.). |
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| Authors: | Besnard, G.1, Khadari, B.1, Baradat, P.1, Bervillé, A.1 berville@ensam.inra.fr |
| Source: | Theoretical & Applied Genetics. Jul2002, Vol. 105 Issue 1, p139-144. 6p. |
| Subjects: | Cultivars, Genetic polymorphisms, Mitochondrial DNA, Nucleic acids, Cytoplasm, Chloroplasts |
| Abstract: | Four hundred and four individuals belonging to the species Olea europaea were characterised using mitochondrial DNA (mtDNA) RFLPs. Twelve mitotypes were distinguished. The combination of mtDNA information with cpDNA polymorphism (characterised in a previous study) led us to recognise 20 cytoplasmic lineages of which seven were found in the Mediterranean area (oleasters, cultivars and O. e. subsp. maroccana). In the olive complex, strong cytoplasm genetic differentiation was revealed (Fst = 0.73). Very strong linkage disequilibrium between cpDNA and mtDNA polymorphisms was observed, particularly in the Mediterranean subspecies europaea. This high congruence between genetic structure based on cpDNA or mtDNA sustains a low level of recurrent mutation in both organelle DNAs and, thus, the polymorphisms used in this study were pertinent to reconstruct olive phylogeography. In the Mediterranean area, genetic drift due to population regression during Quaternary glaciations, and founder effects associated with the postglacial seed dissemination, have probably contributed to the existence of a high genetic linkage disequilibrium between cpDNA and mtDNA polymorphisms. Thus, four Mediterranean cytoplasmic lineages, clearly distinguished both by cpDNA and mtDNA polymorphisms, most likely reflect four distinct relic populations during Quaternary glaciations. Finally, O. e. subsp. maroccana from South Morocco, which also displayed specific cytoplasmic lineages, should be considered as another relic Mediterranean population. [ABSTRACT FROM AUTHOR] |
| Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 15723938 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Combination of chloroplast and mitochondrial DNA polymorphisms to study cytoplasm genetic differentiation in the olive complex (Olea europaea L.). – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Besnard%2C+G%2E%22">Besnard, G.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Khadari%2C+B%2E%22">Khadari, B.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Baradat%2C+P%2E%22">Baradat, P.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bervillé%2C+A%2E%22">Bervillé, A.</searchLink><relatesTo>1</relatesTo><i> berville@ensam.inra.fr</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Theoretical+%26+Applied+Genetics%22">Theoretical & Applied Genetics</searchLink>. Jul2002, Vol. 105 Issue 1, p139-144. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Cultivars%22">Cultivars</searchLink><br /><searchLink fieldCode="DE" term="%22Genetic+polymorphisms%22">Genetic polymorphisms</searchLink><br /><searchLink fieldCode="DE" term="%22Mitochondrial+DNA%22">Mitochondrial DNA</searchLink><br /><searchLink fieldCode="DE" term="%22Nucleic+acids%22">Nucleic acids</searchLink><br /><searchLink fieldCode="DE" term="%22Cytoplasm%22">Cytoplasm</searchLink><br /><searchLink fieldCode="DE" term="%22Chloroplasts%22">Chloroplasts</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Four hundred and four individuals belonging to the species Olea europaea were characterised using mitochondrial DNA (mtDNA) RFLPs. Twelve mitotypes were distinguished. The combination of mtDNA information with cpDNA polymorphism (characterised in a previous study) led us to recognise 20 cytoplasmic lineages of which seven were found in the Mediterranean area (oleasters, cultivars and O. e. subsp. maroccana). In the olive complex, strong cytoplasm genetic differentiation was revealed (Fst = 0.73). Very strong linkage disequilibrium between cpDNA and mtDNA polymorphisms was observed, particularly in the Mediterranean subspecies europaea. This high congruence between genetic structure based on cpDNA or mtDNA sustains a low level of recurrent mutation in both organelle DNAs and, thus, the polymorphisms used in this study were pertinent to reconstruct olive phylogeography. In the Mediterranean area, genetic drift due to population regression during Quaternary glaciations, and founder effects associated with the postglacial seed dissemination, have probably contributed to the existence of a high genetic linkage disequilibrium between cpDNA and mtDNA polymorphisms. Thus, four Mediterranean cytoplasmic lineages, clearly distinguished both by cpDNA and mtDNA polymorphisms, most likely reflect four distinct relic populations during Quaternary glaciations. Finally, O. e. subsp. maroccana from South Morocco, which also displayed specific cytoplasmic lineages, should be considered as another relic Mediterranean population. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Theoretical & Applied Genetics is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s00122-002-0868-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 139 Subjects: – SubjectFull: Cultivars Type: general – SubjectFull: Genetic polymorphisms Type: general – SubjectFull: Mitochondrial DNA Type: general – SubjectFull: Nucleic acids Type: general – SubjectFull: Cytoplasm Type: general – SubjectFull: Chloroplasts Type: general Titles: – TitleFull: Combination of chloroplast and mitochondrial DNA polymorphisms to study cytoplasm genetic differentiation in the olive complex (Olea europaea L.). Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Besnard, G. – PersonEntity: Name: NameFull: Khadari, B. – PersonEntity: Name: NameFull: Baradat, P. – PersonEntity: Name: NameFull: Bervillé, A. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 07 Text: Jul2002 Type: published Y: 2002 Identifiers: – Type: issn-print Value: 00405752 Numbering: – Type: volume Value: 105 – Type: issue Value: 1 Titles: – TitleFull: Theoretical & Applied Genetics Type: main |
| ResultId | 1 |
