In this study, we present cytogenetic data regarding 66 Myzus persicae strains collected in different regions of Italy. Together with the most common 2n=12 karyotype, the results showed different chromosomal rearrangements: 2n=12 with A1–3 reciprocal translocation, 2n=13 with A1–3 reciprocal translocation and A3 fission, 2n=13 with A3 fission, 2n=13 with A4 fission, 2n=14 with X and A3 fissions. A 2n=12–13 chromosomal mosaicism has also been observed. Chromosomal aberrations (and in particular all strains showing A1–3 reciprocal translocation) are especially frequent in strains collected on tobacco plants, and we suggest that a clastogenic effect of nicotine, further benefited by the holocentric nature of aphid chromosomes, could be at the basis of the observed phenomenon.

Rivi, M., Monti, V., Mazzoni, E., Cassanelli, S., Panini, M., Bizzaro, D., Mandrioli, M., Manicardi, G. C., Karyotype variations in Italian populations of the peach-potato aphid Myzus persicae (Hemiptera: Aphididae), <<BULLETIN OF ENTOMOLOGICAL RESEARCH>>, 2012; 102 (6): 663-671. [doi:10.1017/S0007485312000247] [http://hdl.handle.net/10807/24763]

Karyotype variations in Italian populations of the peach-potato aphid Myzus persicae (Hemiptera: Aphididae)

Mazzoni, Emanuele;Panini, Michela;
2012

Abstract

In this study, we present cytogenetic data regarding 66 Myzus persicae strains collected in different regions of Italy. Together with the most common 2n=12 karyotype, the results showed different chromosomal rearrangements: 2n=12 with A1–3 reciprocal translocation, 2n=13 with A1–3 reciprocal translocation and A3 fission, 2n=13 with A3 fission, 2n=13 with A4 fission, 2n=14 with X and A3 fissions. A 2n=12–13 chromosomal mosaicism has also been observed. Chromosomal aberrations (and in particular all strains showing A1–3 reciprocal translocation) are especially frequent in strains collected on tobacco plants, and we suggest that a clastogenic effect of nicotine, further benefited by the holocentric nature of aphid chromosomes, could be at the basis of the observed phenomenon.
2012
Inglese
Rivi, M., Monti, V., Mazzoni, E., Cassanelli, S., Panini, M., Bizzaro, D., Mandrioli, M., Manicardi, G. C., Karyotype variations in Italian populations of the peach-potato aphid Myzus persicae (Hemiptera: Aphididae), <<BULLETIN OF ENTOMOLOGICAL RESEARCH>>, 2012; 102 (6): 663-671. [doi:10.1017/S0007485312000247] [http://hdl.handle.net/10807/24763]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/24763
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