Microbial populations and phenolic acids in soil
1988; Elsevier BV; Volume: 20; Issue: 6 Linguagem: Inglês
10.1016/0038-0717(88)90084-3
ISSN1879-3428
Autores Tópico(s)Pesticide and Herbicide Environmental Studies
ResumoPopulations of bacteria, fungi and actinomycetes in Portsmouth A1- 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 B1- than in A1-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
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