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Effect of NH 3 on Chlamydospore Formation of Fusarium oxysporum f. sp. dianthi in an NH 3 ‐Flow System
Author(s) -
Löffler H. J. M.,
Dongen M.,
Schippers B.
Publication year - 1986
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1986.tb04358.x
Subject(s) - chlamydospore , conidium , fusarium oxysporum , biology , ammonia , fungi imperfecti , tris , botany , horticulture , biochemistry
Conidia of Fusarium oxysporum on membrane filters on a sand bed saturated with a TRIS‐buffer in Conway vessels were exposed to different concentrations of NH 3 . NH 3 was generated by bubbling air through NH 4 OH‐containing cylinders and pumped through the Conway vessels. Low concentrations of NH 3 (15 ppm) stimulated chlamydospore formation in both germinated and ungerminated conidia. Higher concentrations of NH 3 (150 ppm) inhibited chlamydospore formation. Ammonia had no apparent effects on the quality of the produced chlamydospores as measured by determining the persistence in soil.