Natural interspecies transfer of mitochondrial DNA in amphibians.

Spolsky, Christina; Uzzell, Thomas

doi:10.1073/pnas.81.18.5802

Cited by 158 publications

(81 citation statements)

References 26 publications

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“…Several studies have provided evidence for interspecific mtDNA transfer in the absence of nuclear gene introgression (Ferris et al, 1983;Powell, 1983;Spolsky and Uzzell, 1984). On the other hand, nuclear and mitochondrial genes were found to change concordantly within hybrid populations or in a transect across hybrid zones (Avise et al, 1984;Szymura et al, 1985;Harrison et al, 1987;Wallis and Arntzen, 1987;Rand and Harrison, 1989;Sumida and Ishihara, 1997).…”

Section: Discussionmentioning

confidence: 99%

Mitochondrial DNA differentiation in the Japanese brown frog Rana japonica as revealed by restriction endonuclease analysis.

Sumida

1997

Genes Genet. Syst.

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To elucidate mtDNA differentiation in the Japanese brown frog Rana japonica, and compare it with results from allozyme analysis and crossing experiments, RFLP analysis was conducted on 78 frogs from 16 populations in Honshu. Purified mtDNA was digested with eight six-base recognizing restriction enzymes and analyzed by 1% agarose-slab gel electrophoresis. Cleavage patterns of the mtDNA showed three distinct genome size classes: small (18.5 kb), middle (20.0 kb) and large (21.5 kb). Ten haplotypes (I~X) were observed among the 16 populations. The expected nucleotide divergences within populations ranged from 0 to 0.47% with a mean of 0.08%. The net nucleotide divergences among 16 populations ranged from 0 to 7.74% with a mean of 3.49%. The UPGMA dendrogram and NJ tree, which were constructed based on the net nucleotide divergences, showed that R. japonica diverged first into the eastern and western groups. The eastern group subsequently differentiated into a subgroup containing six populations and the Akita population, and the western group divided into several subgroups. These results, as well as the results of allozyme analysis and crossing experiments, suggest that the eastern and western groups have experienced secondary contact, and introgression has occurred in the Akita population.

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Section: Discussionmentioning

confidence: 99%

Mitochondrial DNA differentiation in the Japanese brown frog Rana japonica as revealed by restriction endonuclease analysis.

Sumida

1997

Genes Genet. Syst.

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“…This adds to the increasing number of examples of mitochondrial gene exchange betw^een species in other taxa (e.g. mammals [Ferris et al 1983, Carr et al 1986, Tegelstrom 1987, Lehman et al 1991, amphibians [Spolsky andUzzell 1984, Lamb andAvise 1986], and fish [Avise and Saunders 1984]). …”

Section: Discussionmentioning

confidence: 99%

Mitochondrial Analysis of Gene Flow between New Zealand Mallards (Anas platyrhynchos) and Grey Ducks (A. superciliosa)

Rhymer

Braun

1994

The Auk

138

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ABSTRACT.•One of the more well-known examples of hybridization in birds is the frequently documented occurrence between sexually dimorphic Mallards (Anas platyrhynchos) and several closely related nondimorphic species in the mallard complex. In New Zealand, the Grey Duck (Anas superciliosa superciliosa) is the indigenous, nondimorphic Mallardlike species, and extensive hybridization with introduced Mallards has been implicated in the population decline of Grey Ducks. Individuals from throughout the country were classified phenotypically as parentals or hybrids based on variation in plumage, bill color, and leg color. We confirmed species-specific mitochondrial DNA haplotypes by comparing restrictionenzyme fragment patterns in Grey Ducks and New Zealand Mallards to those of Pacific Black Ducks (A, superciliosa rogersi) from Australia and Mallards from North America, respectively. Our data indicate that hybridization has led not only to introgression of Grey Duck mtDNA into Mallard populations (the predicted direction of gene flow), but also to significant introgression of Mallard mtDNA into Grey Duck populations. Thus, the contention that hybridization between Mallards and nondimorphic species involves primarily Mallard males with females of the other species is not upheld for this example from New Zealand. The speciation process appears to be undergoing reversal.

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“…(4) The B donor has not retained its original mitochondria due to introgression of mitochondnial DNA from a different species (e.g., Ferris ci a!., 1983;Powell, 1983;Spolsky and Uzzell, 1984). (5) The present mitochondria of the B donor has lost all similarity to the mitochondria of B in the past through extensive intramitochondrial recombination processes and internal rearrangements (e.g., Falconet et a!., 1984).…”

Section: Methodsmentioning

confidence: 99%

Restriction endonuclease profiles of mitochondrial DNA and the origin of the B genome of bread wheat, Triticum aestivum

1989

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In an attempt to identify the donor of the B genome in the emmer (AABB) and dinkel (AABBDD) wheats (Triticum turgidum and T. aestivum, respectively), the restriction endonuclease profiles of two regions around the mitochondrial cytochrome oxidase subunit I gene were compared with those of five putative diploid ancestors belonging to the Sitopsis section of the Aegilops genus: Ac. longissima, Ac. speltoidcs, Ac. bicornis, Ac. sharoncnsis and Ac. scarsii. The mitochondria of the diploid donors of genome A (T. monococcum, section Monococca) and genome D (Ac. squarrosa, section Vertebrata) were also tested. The results indicate that none of these diploid species is likely to have either donated the B genome or to be closely related to the donor. The restriction fragment patterns of T. turgidum and T. acstivum were identical, supporting the hypothesis that T. turgidum is the immediate maternal relative of T. aestivum. The restriction endonuclease profiles of T. monococcum var. boeoticum and T. m. var. urartu were also identical supporting their conspecific systematic assignment. No real taxonomic distinction exists between Triticum and Acgilops. With the possible exception of Ac. longissima, the mitochondria of the Sitopsis section constitute a natural dade. Ac. speltoides shows high levels of mitochondrial polymorphism between accessions.

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Natural interspecies transfer of mitochondrial DNA in amphibians.

Cited by 158 publications

References 26 publications

Mitochondrial DNA differentiation in the Japanese brown frog Rana japonica as revealed by restriction endonuclease analysis.

Mitochondrial DNA differentiation in the Japanese brown frog Rana japonica as revealed by restriction endonuclease analysis.

Mitochondrial Analysis of Gene Flow between New Zealand Mallards (Anas platyrhynchos) and Grey Ducks (A. superciliosa)

Restriction endonuclease profiles of mitochondrial DNA and the origin of the B genome of bread wheat, Triticum aestivum

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