Table 2. Summary of FISH Analysis of Centromere-Specific Satellite Repeats in Six Diploid Solanum Species.
| Repeat | DM1-3 S. tuberosum (A Genome) | S. verrucosum (A Genome) | S. jamesii (B Genome) | S. chromatophilum (P Genome) | S. lycopersicum (T Genome) | S. etuberosum, S. palustre (E Genome)a |
|---|---|---|---|---|---|---|
| St49 | One location to Cen5, another noncentromeric location on the second chromosome | Strong centromeric and/or pericentromeric signals on multiple chromosomes | Strong centromeric and/or pericentromeric signals on multiple chromosomes | Strong centromeric and/or pericentromeric signals on multiple chromosomes | Telomeric signals on all chromosomes | Strong centromeric and/or pericentromeric signals on multiple chromosomes and weak telomeric signals on all chromosomes |
| St18 | Specific to Cen9 | Single centromeric location, not Cen9 | No hybridizationb | Dispersed signals at all chromosomes, enhanced centromeric/pericentromeric signals at some chromosomes (Figure 9l) | No hybridization | No hybridization |
| St24 | Specific to Cen1 | Single centromeric location, not Cen1 | No hybridization | No hybridization | No hybridization | No hybridization |
| St57 | Specific to Cen7 | Specific to Cen7 | No hybridization | No hybridization | No hybridization | No hybridization |
| St3-58 | Specific to Cen2 | No hybridization | No hybridization | No hybridization | No hybridization | No hybridization |
| St3-238 | Specific to Cen8 | No hybridization | No hybridization | Dispersed signals at all chromosomes, enhanced centromeric/pericentromeric signals at some chromosomes | No hybridization | No hybridization |
| St3-294c | Specific to Cen3 | No hybridization | No hybridization | Dispersed signals at all chromosomes, enhanced centromeric/pericentromeric signals at some chromosomes | No hybridization | No hybridization |
a
Both S. etuberosum and S. palustre contain the E genome. The FISH results from these two species were identical.
b
“No hybridization” refers to all FISH signal patterns with very weak and dispersed hybridization or patterns that are inconsistent and are not specific to centromeric regions. See one example in Figure 9N.
c
A St3-294 probe that excludes St18-related sequences was used in FISH analysis.