Effects of the herbicide molinate on the metabolic activities of a degradative Streptomyces griseus strain

Daniele Daffonchio*, Grazia Baggi, Gian Pietro Molinari, Giancarlo Ranalli, Claudia Sorlini

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Cometabolic degradation of the herbicide molinate was tested using two microorganisms, Arthrobacter sp., strain M3 and Streptomyces griseux strain M2; the latter classified on the basis of the presence of the enzymatic cofactor SF-420. The strains M3 and M2, inoculated in a basic salts medium with glucose as carbon source and added with 100 mg L-1 of molinate, degraded respectively 35 and 51% of the herbicide in 36 days. Increasing concentrations of molinate, ranging from 50 to 200 mg L-1 in glucose medium, did not affect the final ATP yield of the strain M2, but decreased the final growth yield and the ATP synthesis rate. Moreover, the onset of coenzyme SF-420 synthesis was progressively delayed. In contrast, surprisingly, SF-420 final yield and production rate were increased by progressive increasing concentrations of molinate in the mineral medium.

Original languageEnglish (US)
Pages (from-to)257-268
Number of pages12
JournalJournal of Environmental Science and Health - Part B Pesticides, Food Contaminants, and Agricultural Wastes
Volume31
Issue number2
DOIs
StatePublished - Jan 1 1996

Keywords

  • ATP
  • Cometabolism
  • Degradation
  • Molinate
  • Streptomyces griseus
  • coenzyme SF- 420

ASJC Scopus subject areas

  • Food Science
  • Pollution

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