1887

Abstract

SUMMARY: Light has been shown to affect aggregation and founder cell development in the cellular slime mould An aggregation-stimulating factor, D factor, also affects aggregation of wild-type and aggregation-defective mutants in the complementation group Both light and D factor cause premature aggregation of amoebae and increase the number of aggregate centres formed. In addition, D factor is able to stimulate aggregation of wild-type amoebae at densities where aggregation would not normally occur. Several experiments show that amoebae are more sensitive to D factor in the presence of light, with optimum aggregation occurring in the presence of both light and D factor. Development of founder cells has been observed in the mutants in the absence of D factor. However, these founder cells are inactive and do not produce aggregates until D factor is added. This class of inactive founder cells can be detected in wild-type amoebae. Production of D factor is also dependent on light with a 20- to 60-fold decrease in production over that occurring in darkness. A complex relationship between D factor, light and founder cell differentiation is established by this study.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-129-1-167
1983-01-01
2019-10-22
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-129-1-167
Loading
This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error