Airborne fungi in the region of Cubatao, Sao Paulo State, Brazil

From March/1993 to March/1995, airborne fungi were isolated from the "Vale do Rio Moji" (highly affected by the air pollution caused by fertilizer ind ustries, steel works, cement factories and chemical products industries, am ong others) and from the "Vale do Rio Piloes" (less affected by the air pol lution), both in the municipality of Cubatao, Sao Paulo State, Brazil, by e xposing Petri dishes with potato dextrose agar medium, placed one meter fro m the ground, during 5 min. After 5 days of incubation at 20 degreesC, the colonies of the fungi were purified and identified, resulting in the identi fication of 39 taxa, three unidentified strains of Fusarium and non-sporula ting cultures. A total of 28 taxa, one unidentified stain of Fusarium and n on-sporulating fungi (71 records) were isolated in the "Vale do Rio Moji" a nd 29 taxa, two unidentified strains of Fusarium and non-sporulating fungi (72 records) in the "Vale do Rio Piloes. The airborne mycota of the higher polluted site presented 17 common, 12 rare and only one constant fungal spe cies. In the other site, the airborne mycota was composed by 19 common, 10 rare and two constant fungal species. Among the obtained fungi, at least 12 taxa were reported as opportunistic fungi, 26 have been mentioned related to plant diseases and eight have been associated to allergy problems. The s imilarity Index of Sorensen between the mycotas, corresponding to 58%, may be considered low, and is probably justified by the air pollution, that mai nly distinguish the two studied areas.