Abstract
The effects of the phenoxy acetic herbicides 2,4-dichlorophenoxy acetic acid (2,4D) and methylchloro-phenoxy acetic acid (MCPA) on growth, photosynthesis, and nitrogenase activity of cyanobacteria has been investigated. Concentrations ranging from 10−9 to 10−3 M did not change significantly the parameters of Anabaena UAM 202. Concentrations higher than 10−3 M of both herbicides were toxic. The primary toxic action of these herbicides in Anabaena UAM 202 was on photosynthesis.
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Leganés, F., Fernández-Valiente, E. Effects of phenoxy acetic herbicides on growth, photosynthesis, and nitrogenase activity in cyanobacteria from rice fields. Arch. Environ. Contam. Toxicol. 22, 130–134 (1992). https://doi.org/10.1007/BF00213311
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DOI: https://doi.org/10.1007/BF00213311