Telomere functions in the translocation heterozygote, Rhoeo spathacea


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Ranganath, R.M. and Umesh, T.G. (1998) Telomere functions in the translocation heterozygote, Rhoeo spathacea. Cytologia, 63 (3). pp. 249-257. ISSN 1348-7019

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The permanent translocation heterozygote, Rhoeo spathacea shows a characteristic ring of all chromosomes at metaphase-I of male meiosis. Elimination of bivalent formation completely due to extreme heterozygosity poses a special problem for reductional division at meiosis-I where the maternal and the paternal sets need to be separated to different poles. Unlike bivalent meiosis, the functions of SC formation, pairing and recombination required for reductional segregation have to be fulfilled by only telomeres which are the only areas of contact among the chromosomes in the ring. The participation of telomeres in these events assumes significance in view of the balanced lethal gene system imposed by translocation heterozygosity, and the particular requirement that only alternate chromosomes segregated to the same pole results in fertile pollen. This paper throws some light on the telomere functions in R. spathacea in the light of our present understanding of telomere biology. The prospects of using R. spathacea as a model organism to dissect molecular aspects of several telomere related functions are also discussed.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: Rhoeo spathacea
Subjects: Faculty of Science > Environmental and Biological Sciences > Botany
Divisions: Jnana Bharathi / Central College Campus > Department of Botany
Depositing User: Mr. Kirana Kumar D
Date Deposited: 05 Feb 2016 06:50
Last Modified: 05 Feb 2016 06:50

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