1887

Abstract

Summary: When was grown in a sodium polypectate/yeast extract/salts medium adjusted with sorbitol to water activity () values of 0.990 and 0.980, extracellular pectate lyase (PL) production was repressed, whereas intracellular PL levels were not affected. Inorganic solutes (NaCl. LiCl, KCl, NaSO and a NaCl/KCl/NaSO mixture) at 0.990 aw strongly stimulated the intracellular levels of PL (6- to 17-fold greater than the control), whereas extracellular levels were only slightly increased. Intra- and extracellular PL levels were not affected by LiCl, NaCl and KCl at 0.995 . A NaCl/sorbitol mixture (0.990 ) completely inhibited extracellular but not intracellular PL production. Lowering of the aw of cultures during mid-exponential growth phase with NaCl (0.990 ) resulted within 30 min in a 70-fold increase in intracellular PL activity. When sorbitol was used in similar experiments, extracellular PL production was inhibited to a greater extent than intracellular levels.

Loading

Article metrics loading...

/content/journal/micro/10.1099/00221287-129-10-3019
1983-10-01
2020-01-25
Loading full text...

Full text loading...

http://instance.metastore.ingenta.com/content/journal/micro/10.1099/00221287-129-10-3019
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