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Cytogenetic characterization of the holocentric chromosomes in the aphids Myzus variansand Myzus cerasi

Cytogenetic characterization of the holocentric chromosomes in the aphids Myzus variansand Myzus cerasi

Authors :
Bizzaro, D.
Barbolini, E.
Mandrioli, M.
Mazzoni, E.
Manicardi, G.C.
Source :
Caryologia; January 1999, Vol. 52 Issue: 1-2 p81-85, 5p
Publication Year :
1999

Abstract

AbstractCytogenetic investigations on the holocentric chromosomes of Myzus variansand Myzus cerasihave been carried out using silver staining and C-banding followed by chromomycin A3(CMA3) and DAPI staining in order to improve our knowledge of these pest crop species and facilitate their identification. In M. variansC-banding pattern is pecu-: liar of each chromosome pair thus allowing the identification of all homologues and the reconstruction of a reliable karyotype whereas in M. cerasi,C-positive regions result to be limited to both the telomeric regions of the X chromosomes. In both species, silver staining localizes rDNA genes on one telomere of each X chromosome; such telomeres are the unique brightly fluorescent C-positive regions after CMA3staining, whereas all other heterochro-matic bands result DAPI positive.

Details

Language :
English
ISSN :
00087114 and 21655391
Volume :
52
Issue :
1-2
Database :
Supplemental Index
Journal :
Caryologia
Publication Type :
Periodical
Accession number :
ejs29184122
Full Text :
https://doi.org/10.1080/00087114.1998.10589157