Some Physiological Effects of the Herbicides (±)-MCPP and 2,4-D on Four Aquatic Hyphomycetes and One Terrestrial Fungus

Autor:	P. J. Fisher, J. I. Mitchell, M. W. Marriott, H. M. Lappin-Scott
Rok vydání:	2000
Předmět:	Mecoprop Hypha biology Fungus Hyphomycetes biology.organism_classification Spore chemistry.chemical_compound Flagellospora curvula chemistry Aquatic plant Botany Respiration General Earth and Planetary Sciences General Environmental Science
Zdroj:	Botanical Journal of Scotland. 52:213-225
ISSN:	1359-4869
DOI:	10.1080/13594860009441755
Popis:	Summary Four aquatic hyphomycetes and one terrestrial fungus were examined for their responses to the phenoxy herbicides (±)-MCPP and 2,4-D as both single and binary preparations with respect to hyphal extension, sporulation and respiration. Hyphal extension of all species was unaffected at concentrations less than 100 mg l−1. At higher concentrations there was a variable inhibitory response to the herbicides but no clear pattern was observed between the five fungi. The binary herbicide mixture had a weak synergistic effect on inhibition of growth rate. For the four aquatic hyphomycetes sporulation was reduced at several herbicide concentrations, but there was no consistent reduction over the experimental period. Flagellospora curvula and Clavariopsis aquatica showed increased sporulation at 100 and 1000 mg l−1 for only some herbicide combinations. The respiration rates of the fungi varied with species and herbicide concentration and ranged between stimulation at 100 mg l−1 to inhibition at 4000 mg l−1. T...
Databáze:	OpenAIRE
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