Effect of dithane M-45 on cellulose-decomposing fungi in Egyptian soil

Moubasher, A. H.; Abdel‐Kader, M. I. A.; Abdel-Mallek, A. Y.

doi:10.1016/0265-3036(87)90032-7

Cited by 6 publications

(1 citation statement)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The counts of these species were decreased by all doses used after all periods of treatment; except in some cases, the counts were not affected or increased at certain doses and periods (Tables 3 to 6). The selective effect of various fungicides on cellulose decomposing fungi was recorded by several workers (Abdel-Kader et , 1983;Moubasher et al, 1984Moubasher et al, , 1987Das et al, 1995). Moharram et al (2004) Fravel et al (2005) studied the effect of azoxystrobin, chlorothalonil, mancozeb, mefenoxam and thiram fungicides on Fusarium wilt caused by Fusarium oxysporum.…”

Section: Treatmentmentioning

confidence: 93%

Cellulose decomposing fungi and cellulase activity as affected by amistar and moncut fungicides

Saleem¹,

El‐Said²,

Moharram³

et al. 2012

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

Spray application of the two fungicides; Amistar (25% Azoxystrobin) and Moncut (25% Flutolanil) on faba bean plants in the field exhibited an inhibitive effect on the total and individual counts of cellulose decomposing fungi associated with roots and shoots of plants. The inhibitive effect of these fungicides depended mainly on the fungicide concentration. The inhibitive effect was increased with the increase in fungicide concentration at different periods of treatment. Forty four fungal isolates representing 35 species and 2 varieties belonging to 19 genera were screened for their abilities to produce exo-β-1,4 glucanase and endo-β-1,4 glucanase enzymes. All fungal isolates tested had the ability to produce cellulase enzymes, but with variable degrees. For exo-β-1, 4 glucanase, six isolates (represent 13.7% of total isolates) showed high cellulase activity. However, twenty one isolates (47.7% of total isolates) were found to be moderate in their cellulase activity. The remaining isolates (17 isolates, represent 38.6% of total isolates) were low producers of cellulase. For endo-β-1, 4 glucanase enzyme, five isolates (represent 11.4% of total isolates) showed high cellulase activity and twenty one isolates (47.7% of total isolates) had moderate ability to produce cellulase. The remaining isolates (18 isolates, represent 40.9% of total isolates) were low producers of cellulase. When these fungicides (at 100-800 ppm) were incorporated individually into the liquid culture medium specified for growth and an extracellular cellulase production was exerted an inhibitive effect on both mycelial growth and cellulase production of Aspergillus flavus var. columnaris, A. fumigatus, A. ochraceous, Mucor hiemalis and Trichoderma harzianum.

show abstract

Section: Treatmentmentioning

confidence: 93%

Cellulose decomposing fungi and cellulase activity as affected by amistar and moncut fungicides

Saleem¹,

El‐Said²,

Moharram³

et al. 2012

Afr. J. Microbiol. Res.

View full text Add to dashboard Cite

show abstract

Studies on the effect of the fungicide Euparen on cellulose‐decomposing fungi in Egyptian soil

Abdel‐Kader

Moubasher

Abdel-Mallek

1989

J. Basic Microbiol.

View full text Add to dashboard Cite

Euparen when applied to the soil at three doses (0.95, 4.75 and 9.5 mg active ingredient N,N-dimethyl-N'-phenyl-(N'-fluorodichloro-methy1thio)-sulfamide per kg dry soil) was generally suppressive to the total count of fungi and several fungal species. its toxicity persisted to act till after 10 weeks from treatment with the three doses, but after 15 weeks the toxicity was completely alleviated. Trichoderma spp. were the only fungal species that was recovered from soil when Euparen was incorporated into cellulose-CzApEKs agar medium at the three doses (4.8, 23.8 and 47.5 ppm). The decomposition of filter paper buried in Euparen-treated soil was significantly retarded after 1 week of incubation with the high dose. On the other hand, filter paper sprayed with the fungicide at the high dose and buried in untreated soil was decomposed at a significantly lower rate than the control after all experimental periods (15 weeks) in addition to the medium dose after 5 weeks of incubation. The growth and sporulation of Trichoderma viride on filter papers placed on the surface of carbon-free agar medium and treated with Euparen were partially increased by the low dose, not affected by the medium dose and partially inhibited by the high dose. The colonization of the other test fungi was partially inhibited or even completely eliminated by the three doses. The mycelial dry weight of Trichoderma viride was significantly increased (nearly doubled) by the medium dose and not affected by the other two doses. The mycelial dry weight and endo 1,4-b-~-glucanase production of the other test fungi were toxicated at least by the higher doses.Euparen (Dichlofluanid ; is a fungicide manufactured by BAYER Pflanzenschutz, West Germany with a chemical name N,N-dimethyl-N'-phenyl-(N'-fluorodichloro-methylthio)-sulfamide and is used in Egypt for the control of graps, strawberries, deciduous fruits and roses diseases.This investigation aimed at studying the side effect of Euparen on the population of cellulose-decomposing fungi and the decay of cellulose in soil. In addition, the effect of this fungicide on the growth and sporulation, the mycelial dry weight and endo-1,4P-~-glucanase production of eleven common cellulose-decomposing fungal species were tested in vitro. Materials and methodsApplication of Euparen to the soil: Sandy-clay soil aliquot collected from Assiut area, Egypt, with pH 8.1, 0.82 % organic matter content, and 0.12% total soluble salts was used. 500 g of air-dry sieved soil (sieve, 20) were placed in a polyethylene bag which was maintained in a plastic pot. Euparen was added and thoroughly mixed with the soil in three doses: low, equivalent to the recommended field dose (0.95 mg active ingredient/ kg dry soil), medium, equivalent to five-times the field dose (4.75 mg), and high, equivalent to ten-times the field dose (9.5 mg). The water content of the soil was adjusted to 40.0 % of its maximum water holdingcapacity, using HILGARD'S pan. Treatments were set up in duplicate in addition to the control without Euparen. Pots were...

show abstract

Microbial populations and enzyme activity in soil treated with heavy metals

Hemida

Omar

Abdel-Mallek

1997

Water Air Soil Pollut

View full text Add to dashboard Cite

Abstract. Effects of two concentrations (200 and 2000 l*g g-t soil) of two heavy metals (copper and zinc as sulphates) applied to clay or sandy soil for 12 weeks on the total counts of fungi, bateria and actinomycetes were studied. Activities of three soil enzymes (urease, nitrate reductase and amidase) were also investigated. Application of heavy metals to the clay soil reduced the microbial populations. However, although neither heavy metal showed any significant increasing effect on microorganisms populations in clay soil samples, some stimulatory effects were noted in sandy soil. Activities of urease and nitrate reductase were inhibited by heavy metal application in both soils. Amidase activity was inhibited only with the higher application rate after some experimental periods.

show abstract

Effect of dithane M-45 on cellulose-decomposing fungi in Egyptian soil

Cited by 6 publications

References 5 publications

Cellulose decomposing fungi and cellulase activity as affected by amistar and moncut fungicides

Cellulose decomposing fungi and cellulase activity as affected by amistar and moncut fungicides

Studies on the effect of the fungicide Euparen on cellulose‐decomposing fungi in Egyptian soil

Microbial populations and enzyme activity in soil treated with heavy metals

Contact Info

Product

Resources

About