Abstract
A satellite DNA family (APSU) was isolated and characterized in the ant Aphaenogaster subterranea. This satellite DNA is organized in tandem repeats of 162 bp and is relatively AT rich (51.9%). Sequence analysis showed a high level of homogeneity between monomers. Loss of satellite DNA has been detected in queens in relation to workers, because the amount of satellite DNA in queens is about 25% of the amount found in workers. Restriction analysis of the total DNA with methylation-sensitive enzymes suggests that this DNA is not methylated. Analysis of the electrophoretic mobility of satellite DNA on non-denaturing polyacrylamide showed that this satellite DNA is only very lightly curved. Their possible transcription was analyzed using reverse transcription and polymerase chain reaction (RT-PCR). The satellite DNA is transcribed on the two DNA strands at the same level in worker and queen pupae, as well as in worker adults.
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