Effect of certain chemicals on soil fungistasis

1976 ◽  
Vol 44 (2) ◽  
pp. 487-489
Author(s):  
K. K. Pandey
Keyword(s):  
Soil Fungistasis

scholarly journals Influence of pH and Matric Potential on Germination of Cephalosporium gramineum Conidia

Plant Disease ◽  
1998 ◽  
Vol 82 (9) ◽  
pp. 975-978 ◽  
Author(s):  
Cynthia A. Blank ◽  
Timothy D. Murray
Keyword(s):  
Soil Moisture ◽  
Soil Ph ◽  
Significant Influence ◽  
Phosphate Buffer ◽  
Mineral Salts ◽  
Matric Potential ◽  
High Soil Moisture ◽  
Soil Fungistasis ◽  
Cephalosporium Gramineum ◽  
Influence Of Ph

Germination of Cephalosporium gramineum conidia in soil was up to twofold greater at -0.064 MPa than at -0.037 and -0.007 MPa when incubated at 5°C for 2 days. Soil pH from 4.7 to 7.5 did not have a significant influence on germination of conidia and the interaction between soil pH and matric potential on germination was not significant. Soil fungistasis, which was previously observed for conidia of C. gramineum, was not observed in these studies. Germination of conidia on mineral salts agar containing phosphate buffer was significantly less at pH 4.5 than at 5.5, 6.5, or 7.5 at 5°C in one of two experiments; however, pH had no influence on germination at 10 or 20°C in two experiments. Although Cephalosporium stripe is more severe under conditions of high soil moisture and low soil pH, increased germination of conidia in response to these factors does not explain the observed increase in disease.

scholarly journals Ethylene and soil fungistasis

Nature ◽  
1974 ◽  
Vol 251 (5472) ◽  
pp. 259-259 ◽  
Author(s):  
J. M. LYNCH ◽  
S. H. T. HARPER
Keyword(s):  
Soil Fungistasis

scholarly journals Microbial Community Composition Affects Soil Fungistasis

2003 ◽  
Vol 69 (2) ◽  
pp. 835-844 ◽  
Author(s):  
Wietse de Boer ◽  
Patrick Verheggen ◽  
Paulien J. A. Klein Gunnewiek ◽  
George A. Kowalchuk ◽  
Johannes A. van Veen
Keyword(s):  
Microbial Community ◽  
Community Composition ◽  
Bacterial Community Composition ◽  
Microbial Community Composition ◽  
Fusarium Culmorum ◽  
Community Analysis ◽  
Microbial Community Analysis ◽  
Carbon Limitation ◽  
Soil Fungistasis

ABSTRACT Most soils inhibit fungal germination and growth to a certain extent, a phenomenon known as soil fungistasis. Previous observations have implicated microorganisms as the causal agents of fungistasis, with their action mediated either by available carbon limitation (nutrient deprivation hypothesis) or production of antifungal compounds (antibiosis hypothesis). To obtain evidence for either of these hypotheses, we measured soil respiration and microbial numbers (as indicators of nutrient stress) and bacterial community composition (as an indicator of potential differences in the composition of antifungal components) during the development of fungistasis. This was done for two fungistatic dune soils in which fungistasis was initially fully or partly relieved by partial sterilization treatment or nutrient addition. Fungistasis development was measured as restriction of the ability of the fungi Chaetomium globosum, Fusarium culmorum, Fusarium oxysporum, and Trichoderma harzianum to colonize soils. Fungistasis did not always reappear after soil treatments despite intense competition for carbon, suggesting that microbial community composition is important in the development of fungistasis. Both microbial community analysis and in vitro antagonism tests indicated that the presence of pseudomonads might be essential for the development of fungistasis. Overall, the results lend support to the antibiosis hypothesis.

Soil Fungistasis: Evidence for an Inhibitory Factor

1973 ◽  
Vol 63 (6) ◽  
pp. 756 ◽  
Author(s):  
Maureen Romine
Keyword(s):  
Inhibitory Factor ◽  
Soil Fungistasis

Responses of Fungal Hyphae to Soil Fungistasis

1971 ◽  
Vol 61 (11) ◽  
pp. 1355 ◽  
Author(s):  
S. C. Hsu
Keyword(s):  
Fungal Hyphae ◽  
Soil Fungistasis
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