An integrated genetic and cytogenetic map for Zhikong scallop, Chlamys farreri, based on microsatellite markers

PLoS One. 2014 Apr 4;9(4):e92567. doi: 10.1371/journal.pone.0092567. eCollection 2014.

Abstract

The reliability of genome analysis and proficiency of genetic manipulation requires knowledge of the correspondence between the genetic and cytogenetic maps. In the present study, we integrated cytogenetic and microsatellite-based linkage maps for Zhikong scallop, Chlamys farreri. Thirty-eight marker-anchored BAC clones standing for the 19 linkage groups were used to be FISH probes. Of 38 BAC clones, 30 were successfully located on single chromosome by FISH and used to integrate the genetic and cytogenetic map. Among the 19 linkage groups, 12 linkage groups were physically anchored by 2 markers, 6 linkage groups were anchored by 1 marker, and one linkage group was not anchored any makers by FISH. In addition, using two-color FISH, six linkage groups were distinguished by different chromosomal location; linkage groups LG6 and LG16 were placed on chromosome 10, LG8 and LG18 on chromosome 14. As a result, 18 of 19 linkage groups were localized to 17 pairs of chromosomes of C. farreri. We first integrated genetic and cytogenetic map for C. farreri. These 30 chromosome specific BAC clones in the cytogenetic map could be used to identify chromosomes of C. farreri. The integrated map will greatly facilitate molecular genetic studies that will be helpful for breeding applications in C. farreri and the upcoming genome projects of this species.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Chromosome Mapping* / methods
  • Chromosomes
  • Chromosomes, Artificial, Bacterial
  • Cytogenetic Analysis* / methods
  • Genetic Linkage
  • In Situ Hybridization, Fluorescence
  • Karyotyping
  • Microsatellite Repeats*
  • Pectinidae / genetics*

Grants and funding

This research work was financially supported by National Natural Science Foundation of China (31270027), National Basic Research Program of China (2010CB126402), National High Tech R&D Program (2012AA10A410), and National Key Technology R&D Program of China (2011BAD45B01). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.