W-enriched satellite sequence in the Indian meal moth, Plodia interpunctella (Lepidoptera, Pyralidae)

Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology
Martina DalíkováFrantisek Marec

Abstract

The W chromosome of most lepidopteran species represents the largest heterochromatin entity in the female genome. Although satellite DNA is a typical component of constitutive heterochromatin, there are only a few known satellite DNAs (satDNAs) located on the W chromosome in moths and butterflies. In this study, we isolated and characterized new satDNA (PiSAT1) from microdissected W chromosomes of the Indian meal moth, Plodia interpunctella. Even though the PiSAT1 is mainly localized near the female-specific segment of the W chromosome, short arrays of this satDNA also occur on autosomes and/or the Z chromosome. Probably due to the predominant location in the non-recombining part of the genome, PiSAT1 exhibits a relatively large nucleotide variability in its monomers. However, at least a part of all predicted functional motifs is located in conserved regions. Moreover, we detected polyadenylated transcripts of PiSAT1 in all developmental stages and in both sexes (female and male larvae, pupae and adults). Our results suggest a potential structural and functional role of PiSAT1 in the P. interpunctella genome, which is consistent with accumulating evidence for the important role of satDNAs in eukaryotic genomes.

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Citations

Nov 3, 2017·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Octavio Manuel Palacios-GimenezDiogo Cavalcanti Cabral-de-Mello
Sep 21, 2020·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·Vanessa Bellini BardellaDiogo Cavalcanti Cabral-de-Mello
Aug 31, 2017·BMC Genetics·Diogo MilaniDiogo Cavalcanti Cabral-de-Mello
Apr 17, 2021·Frontiers in Genetics·Diogo C Cabral-de-MelloFrantišek Marec
Jul 3, 2021·International Journal of Molecular Sciences·Eugenia E MontielSebastián Pita
Oct 19, 2021·Frontiers in Genetics·Carolina CrepaldiPatricia Pasquali Parise-Maltempi

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Datasets Mentioned

BETA
KY450690

Methods Mentioned

BETA
PCR
dot blot

Software Mentioned

AnalySIS
GenBank
DnaSP
PiSAT
Geneious
Adobe Photoshop

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