Record ID No. |
1429 |
Author(s) |
Diedhiou P. M., Oerke E. C., Dehne H. W. , 2004 |
Affiliation |
Ecole Nationale Superieure d |
Title |
Effects of the strobilurin fungicides azoxystrobin and kresoxim-methyl on arbuscular mycorrhiza |
Source. Vol.(no):Page |
Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz. 111(6): 545-556p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Biocides |
Sub-subjects |
Fungicides |
Host |
Zea mays |
Organism |
Glomus coronatum |
Country |
Senegal, Africa |
Abstracts |
The influence of two strobilurin fungicides, azoxystrobin and kresoxim-methyl has been investigated on arbuscular mycorrhiza (AM) involving maize and Glomus coronatum under greenhouse conditions. Three factorial experiments including fungicide leaf application on (I) establishing mycorrhiza and (II) on well-developed mycorrhiza as well as (III) a soil drench with the two fungicides on mycorrhized maize were set up. Leaf applications of the two fungicides neither affected the further development of 5-week-old mycorrhiza, nor the enzymatic activity of G. coronatum. A fungicide application on the foliage of 10-day-old maize inoculated with G. coronatum altered root colonization by AM and consequently mycorrhiza activity. When azoxystrobin and kresoxim-methyl were applied to 5-week-old maize plants inoculated with G. coronatum as a soil drench, mycorrhiza activity decreased rapidly and was completely inhibited after 21 and 7 days, respectively. It is concluded that strobilurins - despite being broad-spectrum fungicides inhibiting mitochondrial respiration - do not affect mycorrhization of crop plants when applied for the control of fungal leaf pathogens at recommended dosages. |