Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern

Dichroplus elongatus is a South American grasshopper that shows simultaneous polymorphisms for B chromosomes and several supernumerary segments located in chromosome pairs S10, S9, and M6 (SS10, SS9 and SS6 respectively), in natural populations from Argentina. Heterochromatin characterization with D...

Descripción completa

Detalles Bibliográficos
Autores principales: Rosetti, Maria Eva Natalia, Rebagliati, Pablo Javier, Remis, Maria Isabel
Publicado: 2010
Materias:
B chromosomes
clinal pattern
CMA3/DAPI banding
supernumerary segments
Acrididae
Dichroplus elongatus
Schistocerca americana
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10826467_v19_n2_p261_Rosetti
http://hdl.handle.net/20.500.12110/paper_10826467_v19_n2_p261_Rosetti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_10826467_v19_n2_p261_Rosetti
record_format dspace
spelling paper:paper_10826467_v19_n2_p261_Rosetti2023-06-08T16:05:52Z Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern Rosetti, Maria Eva Natalia Rebagliati, Pablo Javier Remis, Maria Isabel B chromosomes clinal pattern CMA3/DAPI banding supernumerary segments Acrididae Dichroplus elongatus Schistocerca americana Dichroplus elongatus is a South American grasshopper that shows simultaneous polymorphisms for B chromosomes and several supernumerary segments located in chromosome pairs S10, S9, and M6 (SS10, SS9 and SS6 respectively), in natural populations from Argentina. Heterochromatin characterization with DAPI-CMA3 banding reveals that B chromosomes show an interstitial GC-rich band. The distal SS10 segment seems to also be GC-rich, whereas the proximal supernumerary segments (SS6 and SS9) show two different heterochromatin regions: one GC-rich region (CMA3+/DAPI-) and the other that has no specificity to AT or CG base pairs (CMA3/DAPI dull). The results obtained permit us to distinguish two types of constitutive heterochromatin in the supernumerary segments of D. elongatus. The variation in the frequency of these chromosome polymorphisms was analysed with respect to some climatic and geographic variables. There is considerable B chromosome variation between populations, and this variation correlates negatively with latitude and positively with altitude and mean annual temperature. The incidence of the proximal SS9 segment is positively correlated with altitude. The pattern of chromosome variation is discussed in relation to the population's ability to maintain supernumerary DNA in more climatically favorable geographic regions. Fil:Rosetti, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Rebagliati, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Remis, M.I. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10826467_v19_n2_p261_Rosetti http://hdl.handle.net/20.500.12110/paper_10826467_v19_n2_p261_Rosetti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic B chromosomes
clinal pattern
CMA3/DAPI banding
supernumerary segments
Acrididae
Dichroplus elongatus
Schistocerca americana
spellingShingle B chromosomes
clinal pattern
CMA3/DAPI banding
supernumerary segments
Acrididae
Dichroplus elongatus
Schistocerca americana
Rosetti, Maria Eva Natalia
Rebagliati, Pablo Javier
Remis, Maria Isabel
Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern
topic_facet B chromosomes
clinal pattern
CMA3/DAPI banding
supernumerary segments
Acrididae
Dichroplus elongatus
Schistocerca americana
description Dichroplus elongatus is a South American grasshopper that shows simultaneous polymorphisms for B chromosomes and several supernumerary segments located in chromosome pairs S10, S9, and M6 (SS10, SS9 and SS6 respectively), in natural populations from Argentina. Heterochromatin characterization with DAPI-CMA3 banding reveals that B chromosomes show an interstitial GC-rich band. The distal SS10 segment seems to also be GC-rich, whereas the proximal supernumerary segments (SS6 and SS9) show two different heterochromatin regions: one GC-rich region (CMA3+/DAPI-) and the other that has no specificity to AT or CG base pairs (CMA3/DAPI dull). The results obtained permit us to distinguish two types of constitutive heterochromatin in the supernumerary segments of D. elongatus. The variation in the frequency of these chromosome polymorphisms was analysed with respect to some climatic and geographic variables. There is considerable B chromosome variation between populations, and this variation correlates negatively with latitude and positively with altitude and mean annual temperature. The incidence of the proximal SS9 segment is positively correlated with altitude. The pattern of chromosome variation is discussed in relation to the population's ability to maintain supernumerary DNA in more climatically favorable geographic regions.
author Rosetti, Maria Eva Natalia
Rebagliati, Pablo Javier
Remis, Maria Isabel
author_facet Rosetti, Maria Eva Natalia
Rebagliati, Pablo Javier
Remis, Maria Isabel
author_sort Rosetti, Maria Eva Natalia
title Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern
title_short Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern
title_full Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern
title_fullStr Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern
title_full_unstemmed Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): Fluorescent banding and cline variation pattern
title_sort supernumerany chromosome variants in dichroplus elongatus (acrididae): fluorescent banding and cline variation pattern
publishDate 2010
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10826467_v19_n2_p261_Rosetti
http://hdl.handle.net/20.500.12110/paper_10826467_v19_n2_p261_Rosetti
work_keys_str_mv AT rosettimariaevanatalia supernumeranychromosomevariantsindichropluselongatusacrididaefluorescentbandingandclinevariationpattern
AT rebagliatipablojavier supernumeranychromosomevariantsindichropluselongatusacrididaefluorescentbandingandclinevariationpattern
AT remismariaisabel supernumeranychromosomevariantsindichropluselongatusacrididaefluorescentbandingandclinevariationpattern
_version_ 1768542517768224768

Ejemplares similares