Effects of Medium Composition and Carbon Dioxide on Circadian Conidiation in Neurospora
- 1 July 1972
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 50 (1), 171-175
- https://doi.org/10.1104/pp.50.1.171
Abstract
Efforts to significantly perturb the timing mechanism, and thus the period, of the rhythm responsible for circadian conidiation in bd, a strain of Neurospora crassa, by altering the medium composition have been unsuccessful. Various salt solutions, sugars, and amino acids do, however, have pronounced effects on growth and conidiation, and thus on the expression and persistence of rhythmicity.Aeration stimulates conidiation in growth-tube cultures, thereby allowing experiments which demonstrate that nearly all strains and species of Neurospora are capable of circadian conidiation. These results extend to Neurospora the generalization that physiological and developmental regulation in all eukaryotic organisms has a circadian component. Aeration also increases the persistence of circadian conidiation suggesting that the damping of rhythmicity previously observed on certain media represents the cessation of conidiation, rather than the stopping of a timing mechanism.Aeration is apparently effective in that it maintains CO(2) levels in growth-tube cultures below a critical concentration. Carbon dioxide was shown to inhibit conidiation in both wildtype and bd strains, with the latter being about 200 times more resistant than the former.Keywords
This publication has 11 references indexed in Scilit:
- Amino acid induction of conidiation and morphological alterations in wild type and morphological mutants of Neurospora crassaArchiv für Mikrobiologie, 1969
- The regulation of nitrate reductas enad catalase by amino acids in Neurospora crassaBiochimica et Biophysica Acta (BBA) - Enzymology, 1968
- The Effects of Light on a Circadian Rhythm of Conidiation in NeurosporaPlant Physiology, 1967
- THE EFFECT OF OXYGEN TENSION ON GROWTH, CONIDIATION, AND ALCOHOL PRODUCTION OF NEUROSPORA CRASSACanadian Journal of Microbiology, 1967
- Circadian Nature of a Rhythm Expressed by an Invertaseless Strain of Neurospora crassaPlant Physiology, 1966
- A Study of Conidiation in Neurospora crassaJournal of General Microbiology, 1966
- The band forming rhythm of Neurospora mutantsJournal of Cellular and Comparative Physiology, 1965
- SYMPOSIUM ON BIOCHEMICAL BASES OF MORPHOGENESIS IN FUNGI .3. MOLD-YEAST DIMORPHISM OF MUCOR1963
- Amino Acid Interrelationships in Cysteine Toxicity in Neurospora crassaJournal of General Microbiology, 1962
- [Acetate and its double effect of isocitratase induction and conidial differentiation in Neurospora].1961