This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Reprints and Permissions Copyright Information Books from ASM Press MicrobeWorld Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Brock, T. D. Search for Related Content PubMed PubMed Citation Articles by Brock, T. D.

 Previous Article  |  Next Article 

J Bacteriol. 1967 March; 93(3): 985-990
Copyright © 1967 American Society for Microbiology. All Rights Reserved.

Mode of Filamentous Growth of Leucothrix mucor in Pure Culture and in Nature, as Studied by Tritiated Thymidine Autoradiography

Department of Microbiology, Indiana University, Bloomington, Indiana

ABSTRACT

Mode of growth of Leucothrix mucor filaments was measured by autoradiography with tritiated thymidine. Studies were performed on L. mucor in pure cultures in free suspension, as an epiphyte of pure cultures of the red alga Antithamnion sarniense, and as an epiphyte of red algae in the sea. Statistical analyses of the distribution of growing cells was done by use of the nonparametric One-Sample Runs Test and a Cluster analysis adapted from quadrat analyses of plant ecologists. No evidence of preferential growth at base or tip of L. mucor filaments was obtained in any of these studies. However, in nature, but not in the laboratory, there were regions of L. mucor filaments which were nongrowing or dormant. Such nongrowing regions could incorporate tritiated glucose.