A centromeric satellite DNA in the European plethodontid salamanders (Amphibia, Urodela).
A highly repeated satellite DNA (Hy500) located in the centromeric heterochromatin of the European plethodontid salamander Speleomantes (formerly Hydromantes) was studied. The Hy500 family represents about 1% of the Speleomantes supramontis genome and has a major repeating unit of about 500 base pairs, which may have evolved from the progressive amplification of shorter sequences. This centromeric satellite is conserved in all the Speleomantes species, which nevertheless show distinct patterns of chromosomal distribution, which are of relevance as to their phylogenetic relationships.
Batistoni
R
R
Dipartimento di Fisiologia e Biochimica, Laboratori di Biologia Cellulare e dello Sviluppo, Ghezzano (Pisa), Italy.
Nardi
I
I
Rebecchi
L
L
Nardone
M
M
Demartis
A
A
D000818:Animals; D001483:Base Sequence; D015139:Blotting, Southern; D002503:Centromere / Q000648:ultrastructure; D002874:Chromosome Mapping; D004276:DNA, Satellite / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D008938:Mitosis; D008969:Molecular Sequence Data; D005810:Multigene Family; D012091:Repetitive Sequences, Nucleic Acid; D012689:Sequence Homology, Nucleic Acid; D012730:Sex Chromosomes / Q000648:ultrastructure; D013045:Species Specificity; D014562:Caudata / Q000235:genetics*
D004276:DNA, Satellite