The effects of organo-phosphorus pesticides on the respiration of Azotobacter vinelandii

Mac-Rae I.C. and Celo J.S. (1974) The effects of organo-phosphorus pesticides on the respiration of Azotobacter vinelandii. Soil Biology and Biochemistry, 6 2: 109-111. doi:10.1016/0038-0717(74)90068-6


Author Mac-Rae I.C.
Celo J.S.
Title The effects of organo-phosphorus pesticides on the respiration of Azotobacter vinelandii
Journal name Soil Biology and Biochemistry   Check publisher's open access policy
ISSN 0038-0717
Publication date 1974-01-01
Sub-type Article (original research)
DOI 10.1016/0038-0717(74)90068-6
Volume 6
Issue 2
Start page 109
End page 111
Total pages 3
Subject 1111 Nutrition and Dietetics
1303 Specialist Studies in Education
2303 Ecology
Abstract The effects often organo-phosphorus pesticides at 2 and 100 parts/106 upon O2-uptake of Azotobacter vinelandii with glucose as substrate was studied by means of polarography. When washed suspensions of the bacterium were exposed to the pesticides for 2 h before measurement of oxygen uptake. respiration rate was greatly reduced in the case of Naled, Terracur-P, Coumaphos. DDVP, Malathion. Nemacur-P, Chlorpyrifos, DOWCO 217 and DOWCO 214 at 100 parts/106 concn. At 2 parts/106, respiration was inhibited with Naled, Coumaphos, DDVP, Chlorpyrifos and to a lesser extent with DOWCO 217 and Nemacur-P. No inhibition was found with Terracur-P, or DOWCO 214 at 2 parts/106 concn. Malathion stimulated respiration at 2 parts/106 concn whereas Diazinon stimulated respiration at both concentrations. Endogenous respiration was stimulated by Naled at 2 parts/106 and by Nemacur-P and DDVP at both the concentrations. The effect on respiration was less when the bacterium was grown in the presence of 100 parts/106 DDVP or Naled, but in the case of Terracur-P there was still a marked inhibition.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import - Archived
 
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Created: Tue, 28 Jun 2016, 11:14:39 EST by System User