Document Detail

Morphogenesis in Schizophyllum commune. I. Effects of white light.
MedLine Citation:
PMID:  5380927     Owner:  NLM     Status:  MEDLINE    
Reproductive differentiation in the basidiomycete Schizophyllum commune Fr. is initiated by plasmogamy and reciprocal nuclear migration and is terminated by the production of basidiospores. The work reported here has analyzed several factors that affect 2 sequential steps in reproductive differentiation: A) the formation of aggregated masses of cells, and B) the subsequent differentiation of fruiting bodies. The 2 steps are both photosensitive: A) light accelerates the formation of aggregated masses of cells; B) a short exposure of light induces nonaggregated dikaryotic cells to form mature fruiting bodies in the dark. Cultures of dikaryotic mycelia showed little or no response to light during approximately the first 60 hr of growth. Subsequent to this time, they were photosensitive. Several properties of the photoinduction of fruiting bodies were established in studies utilizing white fluorescent light. (1) The morphogenetic response (fruiting) was approximately linear with the amount of light delivered at low intensities; higher intensities elicited no further response. (2) The photoresponse did not vary when replicate cultures were irradiated at temperatures of 2 degrees , 24 degrees , or 35 degrees . (3) The induction of fruiting bodies by light is disrupted by post-induction heat-exposures of 50 degrees for 1 hr or longer. (4) Photoinduced fruiting bodies formed in distinctive rings on the mycelia and thus suggested that cells of different ages differ in their ability to be photoinduced.
J H Perkins
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Plant physiology     Volume:  44     ISSN:  0032-0889     ISO Abbreviation:  Plant Physiol.     Publication Date:  1969 Dec 
Date Detail:
Created Date:  1970-06-01     Completed Date:  1970-06-01     Revised Date:  2010-09-14    
Medline Journal Info:
Nlm Unique ID:  0401224     Medline TA:  Plant Physiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1706-11     Citation Subset:  IM    
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MeSH Terms
Basidiomycota / growth & development*
Hot Temperature

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

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