Mycobiota and mycotoxin-producing fungi in southern California: their colonisation and interactions.

Fungal contamination in water-damaged houses has become a major concern because of their potential health effects. During our survey in 100 water-damaged houses in southern California, we have reported 42 outdoor and 14 indoor fungal species throughout the year. Six commonly occurring indoor fungal species are and . In the damp building materials, was found to be associated with and but not with and showed strong antagonistic effect against and and significantly inhibited growth of and but had no effect on and . Two trichothecenes, produced by sp., trichodermin and trichodermol, significantly inhibited spore germination and growth of and but had no effect on and . In the damp building materials (drywall, ceiling tile, and oak wood), significantly inhibited the growth of and and had no effect on in these substrata.