Theoretical and Applied Genetics

, Volume 114, Issue 5, pp 823–839

A 1,000-loci transcript map of the barley genome: new anchoring points for integrative grass genomics

Authors

  • Nils Stein
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
  • Manoj Prasad
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • National Centre for Plant Genome Research (NCPGR)
  • Uwe Scholz
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
  • Thomas Thiel
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
  • Hangning Zhang
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • Agronomy DepartmentUniversity of Florida
  • Markus Wolf
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • Trait Genetics
  • Raja Kota
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • Plant Disease Resistance GroupCSIRO—Plant
  • Rajeev K. Varshney
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • International Crops Research Institute for Semi Arid Tropics (ICRISAT)
  • Dragan Perovic
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • Federal Centre for Breeding Research on Cultivated PlantsInstitute of Epidemiology and Resistance Resources
  • Ivo Grosse
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
    • Leibniz Institute of Plant Genetics and Crop Plant Research (IPK)
Original Paper

DOI: 10.1007/s00122-006-0480-2

Cite this article as:
Stein, N., Prasad, M., Scholz, U. et al. Theor Appl Genet (2007) 114: 823. doi:10.1007/s00122-006-0480-2

Abstract

An integrated barley transcript map (consensus map) comprising 1,032 expressed sequence tag (EST)-based markers (total 1,055 loci: 607 RFLP, 190 SSR, and 258 SNP), and 200 anchor markers from previously published data, has been generated by mapping in three doubled haploid (DH) populations. Between 107 and 179 EST-based markers were allocated to the seven individual barley linkage groups. The map covers 1118.3 cM with individual linkage groups ranging from 130 cM (chromosome 4H) to 199 cM (chromosome 3H), yielding an average marker interval distance of 0.9 cM. 475 EST-based markers showed a syntenic organisation to known colinear linkage groups of the rice genome, providing an extended insight into the status of barley/rice genome colinearity as well as ancient genome duplications predating the divergence of rice and barley. The presented barley transcript map is a valuable resource for targeted marker saturation and identification of candidate genes at agronomically important loci. It provides new anchor points for detailed studies in comparative grass genomics and will support future attempts towards the integration of genetic and physical mapping information.

Supplementary material

122_2006_480_MOESM1_ESM.xls (276 kb)
ESM Table 1: Summary of EST-based markers (XLS 277 kb)
122_2006_480_MOESM2_ESM.doc (334 kb)
ESM Table 2: Summary of included anchor / reference markers (DOC 334 kb)
122_2006_480_MOESM3_ESM.doc (35 kb)
ESM Table 3: EST based RFLP-marker detecting multiple loci (DOC 35 kb)
122_2006_480_MOESM4_ESM.doc (58 kb)
ESM Table 4: EST / TC mapped by different marker systems in multiple populations (DOC 58 kb)
122_2006_480_MOESM5_ESM.doc (32 kb)
ESM Table 5: Distribution of anchor marker loci over the seven barley linkage groups (DOC 32 kb)
122_2006_480_MOESM6_ESM.doc (163 kb)
ESM Table 6: Summary of anchor markers (DOC 163 kb)
122_2006_480_MOESM7_ESM.doc (34 kb)
ESM Table 7: Regions of distorted segregation in the individual mapping populations (DOC 34 kb)
122_2006_480_MOESM8_ESM.xls (308 kb)
ESM Table 8: Summary of 1st to 3rd BLASTN match of barley EST to the rice genome (XLS 309 kb)
122_2006_480_MOESM9_ESM.tif (1.3 mb)
ESM Figure 1: Distribution along the barley consensus genetic map of mapped barley ESTs with or without sequence homology to the rice genome.Barley ESTs underlying GB and cMWG markers of this study were classified as showing homology or no homology to the rice genome (BLASTN E-value ≤ 1E-10 or > 1E-10, respectively). Based on their genetic postion they were grouped into bins of 20 cM (y-axis = number of ESTs, x-axis = genetic length given in cM). The distribution of ESTs without rice homology (upper panel of the histogram) was plotted against the distribution of ESTs showing homology to rice (lower panel of the histogram). The distribution of both classes of ESTs was following a very similar pattern along all chromosomes – no significantly different clustering to specific chromosomal regions could be observed. (TIF 1.26 mb)

Copyright information

© Springer-Verlag 2007