Studies on chiasma distribution and chiasma movement in Zoniopoda tarsata (Orthoptera: Romaleidae)
A sample of 27 males of Zoniopoda tarsata from Argentina was studied cytologically. The three largest autosomal pairs and the X were characterized by the presence of interstitial C-bands. Chiasma position relative to the bands was analyzed at diplotene and diakinesis. The frequency of interstitial,...
Guardado en:
| Autor principal: | |
|---|---|
| Formato: | Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
Kluwer Academic Publishers
1988
|
| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | A sample of 27 males of Zoniopoda tarsata from Argentina was studied cytologically. The three largest autosomal pairs and the X were characterized by the presence of interstitial C-bands. Chiasma position relative to the bands was analyzed at diplotene and diakinesis. The frequency of interstitial, terminal and total chiasmata per cell was studied for the whole autosomal bivalent set, analysing the variations between stages and among individuals. The comparison of interstitial chiasma frequencies between stages and among individuals and the study of chiasma position relative to the bands in pairs 1, 2 and 3 indicated that chiasma distribution varied from diplotene to diakinesis. Therefore, terminalization does exist in this species and the movement may occur towards the centromere. The frequency of terminal associations at diplotene showed a high negative correlation (r=-0.89; p<10-5) with the number of interstitial chiasmata. This correlation would not be expected if the two kinds of association were produced by different (independent) mechanisms. Consequently, terminal associations were considered genuine chiasmata. The correlation between interstitial and total chiasmata was very much lower then the former (r=0.39; p=0.04). This fact, besides the relatively low variation for chiasma number, observed among individuals suggests that in this species the number of interestitial chiasmata, which are the most important in controlling the genetical recombination, is mainly regulated by changes in chiasma distribution, while variations in total chiasma frequency are of much lower magnitude. © 1988 Kluwer Academic Publishers. |
|---|---|
| Bibliografía: | Brink, R.A., Cooper, D.C., A proof that corssing-over involves an exchange of segments between homologous chromosomes (1935) Genetics, 20, pp. 22-35 Brown, S.W., Zohary, D., The relationship of chiasmata and crossing-over in Lilium formosanum (1955) Genetics, 40, pp. 850-873 Cardoso, H., Di Tomaso, M.V., Regiones heterocromáticas y organizadora nucleolar durante la meiosis de Zoniopoda tarsata (Orthoptera-Romaleidae) (1980) Mendeliana, 4, pp. 47-56 Creighton, H.S., Mc Clintock, B., A correlation of cytological and genetical crossing-over in Zea mays (1931) Proceedings of the National Academy of Sciences, 17, pp. 492-497 Darlington, C.D., (1958) Evolution of genetic systems, , Oliver & Boyd, Edinburgh, London Darlington, C.D., Chromosomes and the theory of heredity (1960) Nature, 187, pp. 892-895 Darlington, C. D., 1965. Cytology J. & A. Churchill. London; Egel, R., Telomeres and chiasma terminalization (1979) Hereditas, 91, pp. 138-140 Fox, D.P., The control of chiasma distribution in the locust Schistocerca gregaria (Forskal) (1973) Chromosoma, 43, pp. 289-328 Fu, T.K., Sears, E.R., The relationship between chiasmata and crossing-over in Triticum aestivum (1973) Genetics, 75, pp. 231-246 Hendersson, S.A., Chiasma distribution at diplotene in a locust (1963) Heredity, 18, pp. 173-190 Imai, H.T., Moriwaki, K., A re-examination of chiasma terminalization and chiasma frequency in male mice (1982) Chromosoma, 85, pp. 439-452 Jones, G.H., The analysis of exchanges in tritium labelled meiotic chromosomes. II. Stethophyma grossum (1971) Chromosoma, 34, pp. 367-382 Jones, G.H., A test of early terminalization of chiasmata in diplotene spermatocytes of Schistocerca gregaria (1977) Chromosoma, 63, pp. 287-294 Jones, G.H., Giemsa C banding of rye meiotic chromosomes and the nature of terminal chiasmata (1978) Chromosoma, 66, pp. 45-57 Jones, G.H., Tease, C., Analysis of exchanges in differentially stained meiotic chromosomes of Locusta migratoria after BrdU-substitution and FPG staining. IV. The nature of ‘terminal’ associations (1984) Chromosoma, 89, pp. 33-36 Kanda, N., Kato, H., Analysis of crossing-over in mouse meiotic cells by BrdU labelling technique (1980) Chromosoma, 78, pp. 113-121 Maguire, M.P., Direct cytological evidence for true terminalization of chiasmata in maize (1979) Chromosoma, 71, pp. 283-287 Maguire, M.P., Chiasma maintenance and terminalization across a homoeologous bivalent segment (1981) Chromosoma, 82, pp. 107-112 Mather, K., 1937. The determination of position in crossing-over. II. The chromosome length-chiasma frequency relation. Cytologia Fujii Jub. Vol., 514–526; Muller, H.J., The mechanism of crossing-over (1916) The American Naturalist, 50, p. 193 Peacock, W.J., Replication, recombination and chiasmata in Goniaea australasiae (Orthoptera: Acrididae) (1970) Genetics, 65, pp. 593-617 Polani, P.E., Crolla, J.A., Seller, M.J., Moir, F., Meiotic crossing over exchange in the female mouse visualized by BUdR substitution (1979) Nature, 278, pp. 348-349 Swanson, C.P., (1957) Cytology and cytogenetics, , Prentice-Hall, Inc., Englewood Cliffs, New York Sybenga, J., (1975) Meiotic configurations. Monogr. theor. appl. Genet., vol. 1, , R., Frankel, M., Grossman, D., de Zeeuw, Springer, Berlin-Heidelberg-New York Tease, C., Cytological detection of crossing-over in BUdR substituted meiotic chromosomes using the fluorescence plus Giemsa technique (1978) Nature, 272, pp. 823-824 Tease, C., Jones, G.H., Analysis of exchanges in differentially stained meiotic chromosomes of Locusta migratoria after brdU substitution and FPG staining. I. Crossover exchanges in monochiasmate bivalents (1978) Chromosoma, 69, pp. 163-178 Vilardi, J.C., Chromosome polymorphisms and chiasma frequency in two populations of Staurorhectus longicornis (Orthoptera: Acrididae) (1984) CYTOLOGIA, 49, pp. 513-528 Vilardi, J.C., Meiotic behaviour in a population of Dichroplus elongatus (Orthoptera: Acrididae) (1985) Caryologia, 38, pp. 147-160 Vilardi, J.C., Parallel polymorphism for interstitial C-bands and B chromosomes in Zoniopoda tarsata (Orthoptera: Romaleidae) (1987) Caryologia, 39, pp. 365-380 White, M.J.D., Telomeres and terminal chiasmata, a reinterpretation (1959) Univ. Texas Publ., 5914, pp. 107-111 White, M. J. D., 1973. Animal cytology and evolution (3rd. ed.). Cambridge University Press |
| ISSN: | 00166707 |
| DOI: | 10.1007/BF00126012 |