Effect of Indoleacetic Acid on Growth and Dinitrogen Fixation in Cyanobacteria

概要

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The effect of IAA on growth, dinitrogen fixation, and heterocysts frequency of Anabaena PCC 7119 and Nodularia sp. have been investigated. Concentrations of IAA ranging from 10^<-10> to 10^<-4> M did not change the growth of Anabaena PCC 7119. Concentrations higher than 10^<-4> M were inhibitory. Similar results were found in Nodularia sp. although in this case the inhibitory effect appeared with 10^<-5> M of IAA. Neither the nitrogenase activity nor the heterocysts frequency were enhanced by IAA treatment.
日本植物生理学会の論文