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Longitudinal microtubules and their functions during asexual reproduction in Paramecium tetraurelia

Published online by Cambridge University Press:  14 April 2009

V. Sundararaman  and
Earl D. Hanson
V. Sundararaman
Affiliation:
Shanklin Laboratory, Wesleyan University, Middletown, Conn. 06457, U.S.A.
Earl D. Hanson
Affiliation:
Shanklin Laboratory, Wesleyan University, Middletown, Conn. 06457, U.S.A.
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Longitudinal microtubules appear in Paramecium tetraurelia when cells are ready to divide (ca. interfission age 0·9). They arise in the longitudinal cortical ridges between kineties and form, in each ridge, an incomplete circlet of 15–18 microtubules, disappearing 10–15 min after separation of the fission products (ca. interfission age 0·03–0·04). Vinblastine, colchicine, colcemid, mercaptoethanol, and cold treatments all result in loss of these microtubules, rounding up of the cells, and some suppression of cell division. The tubules are thought to play a role in cellular elongation, morphogenesis, and separation.

Type
Research Article
Information
Genetics Research , Volume 27 , Issue 2 , April 1976 , pp. 205 - 211
Copyright
Copyright © Cambridge University Press 1976

References

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