Microbial populations and phenolic acids in soil

Populations of bacteria, fungi and actinomycetes in Portsmouth A 1- and B,-soil material were affected in different ways by repeated enrichment with ferulic, p-coumaric, p-hydroxybenzoic or vanillic acids. Responses varied with type of soil material and phenolic acid, phenolic acid concentration, an...

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Bibliographic Details
Published in:Soil biology & biochemistry 1988, Vol.20 (6), p.793-800
Main Authors: Blum, Udo, Shafer, Steven R.
Format: Article
Language:English
Subjects:
Agronomy. Soil science and plant productions
Animal, plant and microbial ecology
Biological and medical sciences
Chemical, physicochemical, biochemical and biological properties
Fundamental and applied biological sciences. Psychology
Microbial ecology
Physics, chemistry, biochemistry and biology of agricultural and forest soils
Soil
Soil science
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Summary:Populations of bacteria, fungi and actinomycetes in Portsmouth A 1- and B,-soil material were affected in different ways by repeated enrichment with ferulic, p-coumaric, p-hydroxybenzoic or vanillic acids. Responses varied with type of soil material and phenolic acid, phenolic acid concentration, and inorganic nutrient status of the soil. Populations changed more frequently in B 1- than in A 1-soil material. Phenolic acids were readily metabolized by microorganisms, sometimes without detectable population changes, when adequate mineral nutrients were present. Induction of enzymes or selection of organisms capable of degrading individual phenolic acids were clearly evident. Results imply that microbial activity in bioassay systems should be defined for allelopathic studies, particularly when results from various bioassay systems are to be compared
ISSN:0038-0717
1879-3428
DOI:10.1016/0038-0717(88)90084-3