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PMID: 6064362 Published · ppublish English Journal Article

Synchronous mitochondrial division in Neurospora crassa.

The Journal of cell biology ·Vol. 35 ·No. 3 ·1967-12-00 ·Pages 489-99

Hawley ES, Wagner RP

Abstract

Samples of mycelium of Neurospora crassa of known age were harvested from agar plates and examined with the electron microscope. The relative volume of the mitochondria was determined for mycelium of different ages. The volume measurements indicated that the mitochondria were dividing synchronously in fronts 6, 13, and 22(1/2) hr behind the growing hyphal tips. The sequence of mitochondrial division is hypothesized to include mitochondrial cupping followed by division which results in closely associated daughter mitochondria. On the basis of percentages of mitochondrial cupping and association, mitochondrial division was postulated to be occurring at 6, 14, and 26 hr. Close agreement between the mycelial mass doubling time and the calculated mitochondrial mass doubling time indicates that synchronous mitochondrial division is sufficient to maintain growth. The possibility that mitochondrial division is due to intercellular regulation of a mitochondrial genetic system is advanced.

MeSH Terms
Microscopy, Electron Mitochondria/growth & development Neurospora/cytology,growth & development
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Hawley E S
Wagner R P
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21 references, click to expand
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Article Info
Journal
The Journal of cell biology
Abbr.
J Cell Biol
ISSN
0021-9525
DOI
10.1083/jcb.35.3.489
Published
1967-12-00
Pages
489-99
Language
English
Region
United States
NLM ID
0375356
PMCID
PMC2107146
Subset
IM
External Links
PubMed source DOI: 10.1083/jcb.35.3.489 PMC Full Text View journal details
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