Document Detail


An extracellular meiosis-promoting factor in Saccharomyces cerevisiae.
MedLine Citation:
PMID:  9639308     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Meiosis and sporulation in the yeast Saccharomyces cerevisiae has been classically viewed as an example of unicellular, eukaryotic differentiation that occurs in response to nutritional starvation. We present evidence that S. cerevisiae produces an extracellular factor(s), called meiosis-promoting factor (MEP), that is required, in addition to starvation conditions, for efficient meiosis and sporulation. This factor is secreted and accumulates in a cell density-dependent fashion such that cells at a low density sporulate poorly under conditions in which cells at a high density sporulate efficiently. Conditioned medium from sporulating cells at a high density contains a small anionic molecule that has cytostatic activity and stimulates sporulation of cells at low density under a normal starvation condition. These results indicate that MEP-mediated social communication between cells is required for meiosis and sporulation.
Authors:
M Hayashi; K Ohkuni; I Yamashita
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Yeast (Chichester, England)     Volume:  14     ISSN:  0749-503X     ISO Abbreviation:  Yeast     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-09-15     Completed Date:  1998-09-15     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  8607637     Medline TA:  Yeast     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  617-22     Citation Subset:  IM    
Affiliation:
Center for Gene Science, Hiroshima University, Higashi-Hiroshima, Japan.
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MeSH Terms
Descriptor/Qualifier:
Cell Division
Culture Media, Conditioned
Gene Expression Regulation, Fungal
Growth Substances / biosynthesis*,  physiology
Meiosis*
Plasmids / genetics
Saccharomyces cerevisiae / genetics,  physiology*
Spores, Fungal / genetics,  physiology
Chemical
Reg. No./Substance:
0/Culture Media, Conditioned; 0/Growth Substances

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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