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Abstract:

In organisms with chiasmatic meiosis two different relationships have been described between crossing over and synapsis: in one group of organisms synapsis depends on the initiation of meiotic recombination while in the other group it is independent of this initiation. These patterns have been observed mainly in organisms where all meiotic bivalents in the set have similar behaviors. In some heteropteran insects a pair of chromosomes named m chromosomes is known to behave differently from autosomes regarding synapsis and recombination. Here we used immunodetection of a synaptonemal complex component and acid-fixed squashes to investigate the conduct of the small m chromosome pair during the male meiosis in the coreid bug Holhymenia rubiginosa. We found that the m chromosomes form a synaptonemal complex during pachytene, but they are not attached by a chiasma in diakinesis. On the other hand, the autosomal bivalents synapse and recombine regularly. The co-existence of these variant chromosome behaviors during meiosis I add further evidence to the absence of unique patterns regarding the interdependence of synapsis and recombination. © 2007 Springer Science+Business Media B.V.

Registro:

Documento: Artículo
Título:Synapsis with and without recombination in the male meiosis of the leaf-footed bug Holhymenia rubiginosa (Coreidae, Heteroptera)
Autor:Toscani, M.A.; Pigozzi, M.I.; Bressa, M.J.; Papeschi, A.G.
Filiación:Laboratorio de Citogenética Y Evolución, Departamento de Ecología, Genética Y Evolución, Pabellón 2, Intendente Güiraldes 2620, Buenos Aires C1428EHA, Argentina
Centro de Investigaciones en Reproducción, Facultad de Medicina, UBA, Paraguay 2155, Buenos Aires C1121ABG, Argentina
Palabras clave:Heteroptera; Holokinetic chromosomes; Meiosis; Recombination; Synapsis; hematoxylin; nonhistone protein; animal; article; chromosome pairing; cytology; female; genetic recombination; genetics; Heteroptera; male; metabolism; spermatocyte; staining; synaptonemal complex; X chromosome; Animals; Chromosomal Proteins, Non-Histone; Chromosome Pairing; Female; Hematoxylin; Heteroptera; Male; Recombination, Genetic; Spermatocytes; Staining and Labeling; Synaptonemal Complex; X Chromosome; Coreidae; Cucurbita; Heteroptera; Hexapoda; Holhymenia; Rimadarmistus deprecator; Synapsis
Año:2008
Volumen:132
Número:2
Página de inicio:173
Página de fin:178
DOI: http://dx.doi.org/10.1007/s10709-007-9159-0
Título revista:Genetica
Título revista abreviado:Genetica
ISSN:00166707
CODEN:GENEA
CAS:hematoxylin, 517-28-2; Chromosomal Proteins, Non-Histone; Hematoxylin, 517-28-2
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00166707_v132_n2_p173_Toscani

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Citas:

---------- APA ----------
Toscani, M.A., Pigozzi, M.I., Bressa, M.J. & Papeschi, A.G. (2008) . Synapsis with and without recombination in the male meiosis of the leaf-footed bug Holhymenia rubiginosa (Coreidae, Heteroptera). Genetica, 132(2), 173-178.
http://dx.doi.org/10.1007/s10709-007-9159-0
---------- CHICAGO ----------
Toscani, M.A., Pigozzi, M.I., Bressa, M.J., Papeschi, A.G. "Synapsis with and without recombination in the male meiosis of the leaf-footed bug Holhymenia rubiginosa (Coreidae, Heteroptera)" . Genetica 132, no. 2 (2008) : 173-178.
http://dx.doi.org/10.1007/s10709-007-9159-0
---------- MLA ----------
Toscani, M.A., Pigozzi, M.I., Bressa, M.J., Papeschi, A.G. "Synapsis with and without recombination in the male meiosis of the leaf-footed bug Holhymenia rubiginosa (Coreidae, Heteroptera)" . Genetica, vol. 132, no. 2, 2008, pp. 173-178.
http://dx.doi.org/10.1007/s10709-007-9159-0
---------- VANCOUVER ----------
Toscani, M.A., Pigozzi, M.I., Bressa, M.J., Papeschi, A.G. Synapsis with and without recombination in the male meiosis of the leaf-footed bug Holhymenia rubiginosa (Coreidae, Heteroptera). Genetica. 2008;132(2):173-178.
http://dx.doi.org/10.1007/s10709-007-9159-0