Development and characterization of polymorphic microsatellite markers in taro (Colocasia esculenta)

Genome. 2002 Oct;45(5):823-32. doi: 10.1139/g02-045.

Abstract

Microsatellite-containing sequences were isolated from enriched genomic libraries of taro (Colocasia esculenta (L.) Schott). The sequencing of 269 clones yielded 77 inserts containing repeat motifs. The majority of these (81.7%) were dinucleotide or trinucleotide repeats. The GT/CA repeat motif was the most common, accounting for 42% of all repeat types. From a total of 43 primer pairs designed, 41 produced markers within the expected size range. Sixteen (39%) were polymorphic when screened against a restricted set of taro genotypes from Southeast Asia and Oceania, with an average of 3.2 alleles detected on each locus. These markers represent a useful resource for taro germplasm management, genome mapping, and marker-assisted selection.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alleles
  • Asia, Southeastern
  • Base Sequence
  • Cloning, Molecular
  • Colocasia / genetics*
  • DNA Primers / genetics
  • DNA, Plant / genetics
  • Dinucleotide Repeats
  • Genome, Plant
  • Genomic Library
  • Microsatellite Repeats*
  • Pacific Islands
  • Polymorphism, Genetic
  • Trinucleotide Repeats

Substances

  • DNA Primers
  • DNA, Plant