Effect of carboxylic acids and Tweens on the growth of clover root nodule bacteria, Rhizobium trifolii

Mino, Y.

Journal of Japanese Society of Grassland Science 60(1): 16-21

1970


ISSN/ISBN: 0447-5933
Accession: 000068624

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Abstract
All fatty acids tested, including unsubstituted aliphatic dicarboxylic, substituted mono- and dicarboxylic acids and aromatic acids, with the exception of acetic acid, inhibited growth of R. trifolii, their action increasing with increasing length of the C chain. The inhibitory effect of glycollic and propionic acids increased as the pH of the medium decreased. Treatment with Tween 40 and Tween 60 inhibited growth, whereas Tween 80 and Tween 85 promoted growth. Crotonic and acrylic acids suppressed various steps in respiration.