NDLI: Comparative FISH mapping of ribosomal DNA clusters and TTAGG telomeric sequences to holokinetic chromosomes of eight species of the insect order Psocoptera.

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Comparative FISH mapping of ribosomal DNA clusters and TTAGG telomeric sequences to holokinetic chromosomes of eight species of the insect order Psocoptera.

Content Provider	Europe PMC
Author	Golub, Natalia Anokhin, Boris Kuznetsova, Valentina
Abstract	AbstractRepetitive DNAs are the main components of eukaryotic genome. We mapped the 18S rDNA and TTAGG telomeric probe sequences by FISH to meiotic chromosomes of eight species of the order Psocoptera considered a basal taxon of Paraneoptera: Valenzuela burmeisteri (Brauer, 1876), Stenopsocus lachlani Kolbe, 1960, Graphopsocus cruciatus (Linnaeus, 1768), Peripsocus phaeopterus (Stephens, 1836), Philotarsus picicornis (Fabricius, 1793), Amphigerontia bifasciata (Latreille, 1799), Psococerastis gibbosa (Sulzer, 1766), and Metylophorus nebulosus (Stephens, 1836). These species belong to five distantly related families of the largest psocid suborder Psocomorpha: Caeciliusidae, Stenopsocidae, Peripsocidae, Philotarsidae, and Psocidae. We show that all the examined species share a similar location of 18S rDNA on a medium-sized pair of autosomes. This is the first study of rDNA clusters in the order Psocoptera using FISH. We also demonstrate that these species have the classical insect (TTAGG)n telomere organization. Our results provide a foundation for further cytogenetic characterization and chromosome evolution studies in Psocoptera.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC6910881&blobtype=pdf
ISSN	19930771
Journal	Comparative Cytogenetics [Comp Cytogenet]
Volume Number	13
PubMed Central reference number	PMC6910881
Issue Number	4
PubMed reference number	31850138
e-ISSN	1993078X
DOI	10.3897/compcytogen.v13i4.48891
Language	English
Publisher	Pensoft Publishers
Publisher Date	2019-12-06
Access Restriction	Open
Rights License	This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Natalia Golub, Boris Anokhin, Valentina Kuznetsova
Subject Keyword	Insecta psocids Psocomorpha meiosis holokinetic chromosomes (TTAGG)n 18S rDNA FISH
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Animal Science and Zoology Biotechnology Insect Science

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