Plant Biol (Stuttg) 2000; 2(2): 211-217
DOI: 10.1055/s-2000-9106
Original Paper
Georg Thieme Verlag Stuttgart ·New York

Detecting Nucleotide Additivity from Direct Sequences is a SNAP: An Example from Sidalcea (Malvaceae)

J. Whittall, A. Liston, S. Gisler, and R. J. Meinke
  • Department of Botany and Plant Pathology, Oregon State University, Corvallis, Oregon, United States
Further Information

Publication History

March 20, 1999

January 14, 2000

Publication Date:
31 December 2000 (online)

Abstract:

Superimposed nucleotide additivity patterns (SNAPs) were detected from direct sequences of the nuclear ribosomal DNA internal transcribed spacers in a complex of perennial Sidalcea species (Malvaceae) from the Pacific Northwest of the United States. Although only 2.8 % sequence variation exists among the eight ITS accessions, parsimony analysis identified two distinct lineages within this complex consistent with known ploidy levels. Six SNAPs were identified in a known tetraploid S. virgata, suggesting allopolyploid origins from diploid S. virgata and one of two hexaploid Sidalcea species. A dosage effect detected at all six SNAP sites is consistent with the unequal sized parental genomes of allopolyploid S. virgata.

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J. Whittall

Department of Ecology, Evolution and Marine Biology University of California Santa Barbara

California 93106-9610

USA

Section Editor: T. F. Stuessy

Email: whittall@lifesci.ucsb.edu

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