Tree Genetics & Genomes

, Volume 4, Issue 1, pp 25–36

Genetic linkage maps of Populus nigra L. including AFLPs, SSRs, SNPs, and sex trait

Authors

  • M. Gaudet
    • Dip. di Scienze dell’Ambiente Forestale e delle sue Risorse (DISAFRI)Università della Tuscia
  • V. Jorge
    • Unité Amélioration Génétique et Physiologie ForestièresINRA Centre d’Orléans
  • I. Paolucci
    • Dip. di Scienze dell’Ambiente Forestale e delle sue Risorse (DISAFRI)Università della Tuscia
  • I. Beritognolo
    • Dip. di Scienze dell’Ambiente Forestale e delle sue Risorse (DISAFRI)Università della Tuscia
  • G. Scarascia Mugnozza
    • Dip. di Scienze dell’Ambiente Forestale e delle sue Risorse (DISAFRI)Università della Tuscia
    • Dip. di Scienze dell’Ambiente Forestale e delle sue Risorse (DISAFRI)Università della Tuscia
Original Paper

DOI: 10.1007/s11295-007-0085-1

Cite this article as:
Gaudet, M., Jorge, V., Paolucci, I. et al. Tree Genetics & Genomes (2008) 4: 25. doi:10.1007/s11295-007-0085-1

Abstract

Black poplar (Populus nigra L.) is a tree of ecological and economic interest. A better knowledge of P. nigra genome is needed for an effective protection and use of its genetic resources. The main objective of this study is the construction of a highly informative genetic map of P. nigra species including genes of adaptive and economic interest. Two genotypes originated from contrasted natural Italian populations were crossed to generate a F1 mapping pedigree of 165 individuals. Amplification fragment length polymorphism (AFLP), simple sequence repeat (SSR), and single nucleotide polymorphism (SNP) markers were used to genotype 92 F1 individuals, and the pseudo-test-cross strategy was applied for linkage analysis. The female parent map included 368 markers (274 AFLPs, 91 SSRs, and 3 SNPs) and spanned 2,104 cM with 20 linkage groups, and the male parent map, including 317 markers (205 AFLPs, 106 SSRs, 5 SNPs, and sex trait), spanned 2,453 cM with 23 main linkage groups. The sex, as morphological trait, was mapped on the linkage group XIX of the male parent map. The generated maps are among the most informative in SSRs when compared to the Populus maps published so far and allow a complete alignment with the 19 haploid chromosomes of Populus sequence genome. These genetic maps provide informative tools for a better understanding of P. nigra genome structure and genetic improvement of this ecologically and economically important European tree species.

Keywords

Populus nigraGenetic mapSex trait

Supplementary material

11295_2007_85_MOESM1_ESM.doc (46 kb)
ESM S1AFLP primer combination code with selective nucleotides at the 3’ end of the E (EcoRI) primer (2 nucleotides) and the M (MseI) primer (3 nucleotides) respectively. (DOC 47 Kb)
11295_2007_85_MOESM2_ESM.doc (62 kb)
ESM S2Marker description of each linkage group of the female (♀) and male (♂)map. The number of total markers mapped (Ni), the number of each sort of markers (AFLP, SSR, SNP, sex trait (S)), framework markers, and distorted markers (p ≤ 0.05) are presented. The number (∑N.j) of significant (α ≤ 0.05) clustered and dispersed markers with the proportion (Li%) of the corresponding region relative to the linkage group length (Li) are also reported (see “Materials and methods” and Electronic Supplementary Materials S3 for details). (DOC 63 Kb)
11295_2007_85_MOESM3_ESM.doc (80 kb)
ESM S3Significant clustered and dispersed region on each linkage group in the female and male map. (DOC 82 Kb)

Copyright information

© Springer-Verlag 2007