Free access | Research Article

Effects of various metal ions on the growth of some phytopathogenic and biological control fungi

Babak Pakdaman Sardrood

Published on: 30 Sep 2021 | DOI: https://doi.org/10.37446/jinagri/rsa/8.3.2021.1-10 | Volume: 8, Issue: 3 | Pages: 1-10 |



Metal ions are among important environmental factors that influence various aspects of fungal biology and the knowledge on these effects can be applied in integrated plant disease management and mycotechnology. Therefore, in this study the fungal growth on potato dextrose agar, Czapek'sdox agar (CDA, containing FeSO4), and its derivatives made via the replacement of FeSO4 with either of CaSO4, K2SO4, MnSO4, Na2SO4, and ZnSO4 was studied under incubation conditions of 25°C and darkness. The mycelial growth of three biological control (Trichoderma hamatum, T. harzianum, and T. longibrachiatum) and three plant pathogenic (Ceratocystis radicicola, Fusarium oxysporum, and Macrophomina phaseolina) were measured 48h and 72h after inoculation. T. longibrachiatum exhibited the highest mycelial growth and PDA supported the fastest and the highest mycelial growth of most tested fungi. Interestingly, ZnSO4 led to the highest growth of all Trichoderma species, while most of the pathogenic fungi grow well on the media with K2SO4 or Na2SO4.





;