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Telomeric-like sequence (TTTAGGG)n sites in Asteroideae species assessed by FISH analysis. Telomeric sites and interstitial telomeric repeat (ITR) sites are shown as red fluorescent signals and the chromosomes are counterstained with 4, 6-diamidino-2-phenylindole (DAPI) (blue colour). (A) Cota nigellifolia (2n = 18), showing 52 ITR sites. (B) Senecio vulgaris (2n = 40,) with two ITR sites (arrowhead) located in the same chromosome. Scale bars: 10 µm.
