Open AccessPopulation dynamics of Fusarium oxysporum f. sp. raphani in soils of different fungistatic capacity
Author(s) -
Toyota Koki,
Kimura Makoto
Publication year - 1992
Publication title -
fems microbiology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.899
H-Index - 151
eISSN - 1574-6968
pISSN - 0378-1097
DOI - 10.1111/j.1574-6968.1992.tb05790.x
Subject(s) - fusarium oxysporum , fertilizer , spore , population , peg ratio , germination , soil water , agronomy , fusarium , chemistry , horticulture , biology , botany , ecology , demography , finance , sociology , economics
Population dynamics of Fusarium oxysporum f. sp. raphani PEG‐4 with a resistant marker to antibiotic hygromycin B was investigated in soils of different fungistatic capacity. Germination of PEG‐4 was significantly higher in a soil amended with chemical fertilizer (CF‐soil) than in a soil amended with farmyard manure (FYM‐soil). Thus it was concluded that CF‐soil was weakly fungistatic, and FYM‐soil was strongly so. The fates of PEG‐4 spores in the soils were similar when PEG‐4 was introduced at initial densities of 1 10 1 to 10 7 g −1 . However, alteration of environmental conditions, which might induce the germination of PEG‐4 spores, resulted in the soils having different effects on the fate of PEG‐4. Survival of PEG‐4 in CF‐soil increased compared with that in control conditions, but that in FYM‐soil decreased.