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The molecular basis of genetic diversity among cytoplasms of Triticum and Aegilops : 7. Restriction endonuclease analysis of mitochondrial DNAs from polyploid wheats and their ancestral species.
Theor Appl Genet. 1990 Sep; 80(3):366-73.TA

Abstract

Many related species and strains of common wheat were compared by matching differences among their mitochondrial genomes with their "parent" nuclear genomes. We examined three species of Aegilops, section Sitopsis (Ae. bicornis, Ae. sharonensis, and Ae. speltoides), emmer wheat (Triticum dicoccoides, T. dicoccum, and T. durum), common wheat (T. spelta, T. aestivum, and T. compaction), and timopheevi wheat (T. araraticum, T. timopheevi, and T. zhukovskyi). A single source of the cytoplasm was used in all the species, except Ae. speltoides (two sources), T. araraticum (two), and T. aestivum (three). Following restriction endonuclease analyses, the mitochondrial genomes were found to comprise seven types, and a dendrogram showing their genetic relatedness was constructed, based upon the percentage of common restriction fragments. MtDNAs from T. dicoccum, T. durum, T. aestivum, and T. compactum yielded identical restriction fragment patterns; these differed from T. dicoccoides and T. spelta mtDNAs in only 2.3% of their fragments. The fragment patterns of T. timopheevi and T. zhukovskyi were identical, and these differed from T. araraticum mtDNA by only one fragment. In both the emmer-dinkel and timopheevi groups, mitochondrial genome differentiation is evident, suggesting a diphyletic origin of each group. MtDNAs from four accessions of the Sitopsis species of Aegilops differ greatly from one another, but those of Ae. bicornis, Ae. sharonensis, and Ae. searsii, belonging to the same subsection Emarginata, are relatively similar. MtDNAs of timopheevi species are identical, or nearly so, to those of Ae. speltoides accession (09), suggesting that the latter was the cytoplasm donor to the former, polyploid group. The origin of this polyploid group seems to be rather recent in that the diploid and polyploid species possess nearly identical mitochondrial genomes. We cannot determine, with precision, the cytoplasm donor to the emmer-dinkel group. However, our results do suggest that mitochondrial DNAs show larger evolutionary divergence than do the ctDNAs from these same strains.

Authors+Show Affiliations

Laboratory of Genetics, Faculty of Agriculture, Kyoto University, Sakyo-ku, 606, Kyoto, Japan.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24220971

Citation

Terachi, T, et al. "The Molecular Basis of Genetic Diversity Among Cytoplasms of Triticum and Aegilops : 7. Restriction Endonuclease Analysis of Mitochondrial DNAs From Polyploid Wheats and Their Ancestral Species." TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, vol. 80, no. 3, 1990, pp. 366-73.
Terachi T, Ogihara Y, Tsunewaki K. The molecular basis of genetic diversity among cytoplasms of Triticum and Aegilops : 7. Restriction endonuclease analysis of mitochondrial DNAs from polyploid wheats and their ancestral species. Theor Appl Genet. 1990;80(3):366-73.
Terachi, T., Ogihara, Y., & Tsunewaki, K. (1990). The molecular basis of genetic diversity among cytoplasms of Triticum and Aegilops : 7. Restriction endonuclease analysis of mitochondrial DNAs from polyploid wheats and their ancestral species. TAG. Theoretical and Applied Genetics. Theoretische Und Angewandte Genetik, 80(3), 366-73. https://doi.org/10.1007/BF00210074
Terachi T, Ogihara Y, Tsunewaki K. The Molecular Basis of Genetic Diversity Among Cytoplasms of Triticum and Aegilops : 7. Restriction Endonuclease Analysis of Mitochondrial DNAs From Polyploid Wheats and Their Ancestral Species. Theor Appl Genet. 1990;80(3):366-73. PubMed PMID: 24220971.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The molecular basis of genetic diversity among cytoplasms of Triticum and Aegilops : 7. Restriction endonuclease analysis of mitochondrial DNAs from polyploid wheats and their ancestral species. AU - Terachi,T, AU - Ogihara,Y, AU - Tsunewaki,K, PY - 1990/03/28/received PY - 1990/04/03/accepted PY - 2013/11/14/entrez PY - 1990/9/1/pubmed PY - 1990/9/1/medline SP - 366 EP - 73 JF - TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik JO - Theor Appl Genet VL - 80 IS - 3 N2 - Many related species and strains of common wheat were compared by matching differences among their mitochondrial genomes with their "parent" nuclear genomes. We examined three species of Aegilops, section Sitopsis (Ae. bicornis, Ae. sharonensis, and Ae. speltoides), emmer wheat (Triticum dicoccoides, T. dicoccum, and T. durum), common wheat (T. spelta, T. aestivum, and T. compaction), and timopheevi wheat (T. araraticum, T. timopheevi, and T. zhukovskyi). A single source of the cytoplasm was used in all the species, except Ae. speltoides (two sources), T. araraticum (two), and T. aestivum (three). Following restriction endonuclease analyses, the mitochondrial genomes were found to comprise seven types, and a dendrogram showing their genetic relatedness was constructed, based upon the percentage of common restriction fragments. MtDNAs from T. dicoccum, T. durum, T. aestivum, and T. compactum yielded identical restriction fragment patterns; these differed from T. dicoccoides and T. spelta mtDNAs in only 2.3% of their fragments. The fragment patterns of T. timopheevi and T. zhukovskyi were identical, and these differed from T. araraticum mtDNA by only one fragment. In both the emmer-dinkel and timopheevi groups, mitochondrial genome differentiation is evident, suggesting a diphyletic origin of each group. MtDNAs from four accessions of the Sitopsis species of Aegilops differ greatly from one another, but those of Ae. bicornis, Ae. sharonensis, and Ae. searsii, belonging to the same subsection Emarginata, are relatively similar. MtDNAs of timopheevi species are identical, or nearly so, to those of Ae. speltoides accession (09), suggesting that the latter was the cytoplasm donor to the former, polyploid group. The origin of this polyploid group seems to be rather recent in that the diploid and polyploid species possess nearly identical mitochondrial genomes. We cannot determine, with precision, the cytoplasm donor to the emmer-dinkel group. However, our results do suggest that mitochondrial DNAs show larger evolutionary divergence than do the ctDNAs from these same strains. SN - 0040-5752 UR - https://www.unboundmedicine.com/medline/citation/24220971/The_molecular_basis_of_genetic_diversity_among_cytoplasms_of_Triticum_and_Aegilops_:_7__Restriction_endonuclease_analysis_of_mitochondrial_DNAs_from_polyploid_wheats_and_their_ancestral_species_ L2 - https://antibodies.cancer.gov/detail/CPTC-CD44-1 DB - PRIME DP - Unbound Medicine ER -
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