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Updated: Mar 1, 2026
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Optimization and Comparative Analysis of Plant Organellar DNA Enrichment Methods Suitable for Next-generation Sequencing
Published on: July 28, 2017
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ARE CHLOROPLAST AND MITOCHONDRIAL DNA VARIATION SPECIES INDEPENDENT IN OAKS?
S Dumolin-Lapègue1, A Kremer1, R J Petit1
1Institut National de la Recherche Agronomique, Laboratoire de Génétique et Amélioration des Arbres Forestiers, B.P. 45, F-33611, Gazinet Cedex, France.
Summary
Recent cytoplasmic gene flow occurs frequently between white oak species in southern France. Species interactions and compatibility influence the extent of this gene flow, impacting oak genetic diversity.
Area of Science:
- Ecology
- Evolutionary Biology
- Genetics
Background:
- Extensive cytoplasmic genome introgression is known across oak species.
- Distinguishing ancient hybridization from ongoing introgression requires testing for local exchanges.
Purpose of the Study:
- To propose and apply a test for recent, local cytoplasmic gene flow in oak species.
- To investigate the role of species status in restricting cytoplasmic gene flow.
- To assess the influence of related species on intraspecific diversity.
Main Methods:
- Application of a novel test for local cytoplasmic exchanges.
- Analysis of 377 populations (1744 individuals) of four white oak species in southern France.
- Evaluation of species pair interactions and ecological factors.
Main Results:
- Frequent local cytoplasmic exchanges were detected between all oak species pairs studied.
- The extent of cytoplasmic gene flow varies significantly between species pairs.
- The presence of related species impacts intraspecific genetic diversity in some oak species.
Conclusions:
- Intraspecific and interspecific cytoplasmic gene flow in oaks are species-dependent.
- Both components of gene flow are influenced by species interactions and ecological factors.
- Cytoplasmic gene flow patterns reflect recent evolutionary processes in white oaks.
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