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McLean M, Baird WV, Gerats AG, et al. Determination of copy number and linkage relationships among five actin gene subfamilies in Petunia hybrida. Plant Mol Biol. 1988;11(5):663-72doi: 10.1007/BF00017466.
McLean, M., Baird, W. V., Gerats, A. G., & Meagher, R. B. (1988). Determination of copy number and linkage relationships among five actin gene subfamilies in Petunia hybrida. Plant molecular biology, 11(5), 663-72. https://doi.org/10.1007/BF00017466
McLean, M, et al. "Determination of copy number and linkage relationships among five actin gene subfamilies in Petunia hybrida." Plant molecular biology vol. 11,5 (1988): 663-72. doi: https://doi.org/10.1007/BF00017466
McLean M, Baird WV, Gerats AG, Meagher RB. Determination of copy number and linkage relationships among five actin gene subfamilies in Petunia hybrida. Plant Mol Biol. 1988 Sep;11(5):663-72. doi: 10.1007/BF00017466. PMID: 24272500.
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Plant Mol Biol. 1988 Sep;11(5):663-72. doi: 10.1007/BF00017466.

Determination of copy number and linkage relationships among five actin gene subfamilies in Petunia hybrida.

Plant molecular biology

M McLean, W V Baird, A G Gerats, R B Meagher

Affiliations

  1. Department of Genetics, University of Georgia, 30602, Athens, GA, USA.

PMID: 24272500 DOI: 10.1007/BF00017466

Abstract

The actin gene superfamily of Petunia hybrida cv. Mitchell contains greater than 100 gene members which have been divided into several highly divergent subfamilies [1]. Five subfamily-specific probes have been used to compare the actin genes among the Mitchell, Violet 23 (V23) and Red 51 (R51) cultivars of P. hybrida. The sum total of actin genes in these five subfamilies was estimated to be between 10 and 34 members in both V23 and R51. Restriction fragment length polymorphisms (RFLPs) between V23 and R51 were examined with these five probes and eleven different restriction endonucleases. Among the 55 comparisons, 87% exhibited RFLPs. These data indicate extreme divergence between V23 and R51 in DNA sequence and/or the presence of small insertions and deletions surrounding these actin gene subfamilies. This divergence suggests that V23 and R51, which have contrasting phenotypic marker loci on every chromosome, may be useful for the development of a complete RFLP linkage map of the Petunia genome. The segregation of Hind III RFLPs among the progeny of two backcrosses demonstrated that representatives of the five subfamilies of Petunia actin genes exist at four distinct genetic locations and suggested that two of these loci are tightly linked. Apparently, amplification of the numerous members of the Petunia actin gene superfamily occurred via gene dispersal of the original subfamily progenitors and not primarily as a result of amplification of a single chromosomal region.

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