ISSN:
1432-0789
Keywords:
Fusarium oxysporum
;
Chlamydospore formation and lysis
;
Nitrite and ammonia effects
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Geosciences
,
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary Addition of 0.1% NH4Cl or 0.1% urea to one of two soils tested had little or no effect in one soil, but resulted in fewer chlamydospores ofFusarium oxysporum present after 6 weeks in the other soil. This was due to reduced formation of chlamydospores and, particularly, to enhanced lysis of chlamydospores. The hypothesis that ammonia was the causal factor was tested. Ammonia evolved from NH4Cl and urea in both soils to the same amount. Since the effects of NH4Cl and urea were different in the two soils, it is concluded that ammonia was not responsible for the reduced number of chlamydospores. Possibly nitrite is involved.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00638954
Permalink