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- Title
The D4 set: primers that target highly variable intron loops in plant chloroplast genomes.
- Authors
WATTS, CHAD D.; FISHER, AMANDA E.; SHRUM, CELENA D.; NEWBOLD, WENDY L.; HANSEN, SHANNA LEE; LIU, CHANG; KELCHNER, SCOT A.
- Abstract
Chloroplast group II introns offer high-quality, rapidly evolving single-copy loci for comparative sequence analysis. These introns feature diagnostic secondary structures with loops that are among the least evolutionarily constrained sequence in plastomes. We exploited these structures to develop universal primers that amplify and sequence the large Domain IV (D4) loop in several angiosperm introns. With a single sequence read, we recover 300–600 nucleotides of highly variable sequence across angiosperms, with rates of change that are equal to or higher than many of the best known intergenic spacers in plant chloroplast genomes.
- Subjects
CHLOROPLASTS; INTRONS; ANGIOSPERMS; NUCLEOTIDES; GENOMES; PLANTS
- Publication
Molecular Ecology Resources, 2008, Vol 8, Issue 6, p1344
- ISSN
1755-098X
- Publication type
Article
- DOI
10.1111/j.1755-0998.2008.02229.x