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Physiological Competence of Atrazine-Resistant Strains of the Photosynthetic Bacterium Rhodobacter sphaeroides (Rhodospirillaceae)

Published online by Cambridge University Press:  12 June 2017

Alfred E. Brown ,
Bryan Truelove ,
Claudia T. Highfill  and
Scott G. Smith
Alfred E. Brown
Affiliation:
Ala. Agric. Exp. Stn. Dep. Bot. and Microbiol., Auburn Univ., AL 36849-5407
Bryan Truelove
Affiliation:
Ala. Agric. Exp. Stn. Dep. Bot. and Microbiol., Auburn Univ., AL 36849-5407
Claudia T. Highfill
Affiliation:
Ala. Agric. Exp. Stn. Dep. Bot. and Microbiol., Auburn Univ., AL 36849-5407
Scott G. Smith
Affiliation:
Ala. Agric. Exp. Stn. Dep. Bot. and Microbiol., Auburn Univ., AL 36849-5407
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Abstract

Two parameters of physiological competence, rate of CO2 fixation and intraspecific competitiveness, were determined for one or more atrazine-resistant isolates of the photosynthetic bacterium Rhodobacter sphaeroides. Measured over a 2-h period under optimal conditions, two of the resistant isolates fixed CO2 at a greater rate than the atrazine-susceptible, wild-type organism. In a mixed culture study, an atrazine-resistant strain was able to grow and compete successfully with the susceptible, wild-type strain for at least 14 days.

Keywords

Atrazine, 6-chloro-N-ethyl-N-(1-methylethyl)-1,3,5-triazine-2,4-diaminePhotosynthesis rateintraspecific competitioncompetitive growthherbicide resistance
Type
Physiology, Chemistry, and Biochemistry
Information
Weed Science , Volume 36 , Issue 6 , November 1988 , pp. 703 - 706
Copyright
Copyright © 1988 by the Weed Science Society of America 

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References

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