✦ LIBER ✦

Effects of phenoxy acetic herbicides on growth, photosynthesis, and nitrogenase activity in cyanobacteria from rice fields

✍ Scribed by F. Leganés; E. Fernández-Valiente

Publisher: Springer
Year: 1992
Tongue: English
Weight: 441 KB
Volume: 22
Category: Article
ISSN: 0090-4341
DOI: 10.1007/bf00213311

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✦ Synopsis

The effects of the phenoxy acetic herbicides 2,4-dichlorophenoxy acetic acid (2,4D) and methylchlorophenoxy 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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