青岛近海春季沙尘天空气可培养真菌及其潜在健康风险

Cultivable Fungi in Spring Sandy Dust Air in Qingdao Coastal Region and their Potential Health Risk

利用KC-1000型大流量采样器,于2013年3月—4月在青岛近海采集了沙尘天和晴天的气溶胶样品,实验室培养分离纯化携带的真菌共35株,ITSr NDA解析归为9个属:子囊菌属(Ascomycota)、青霉属(Penicillium)、枝孢属(Cladosporium)、曲霉属(Aspergillus)、链格菌属(Alternarina)、毛壳属(Chaetomidium)、附球菌属(Epicoccum)、弯孢属(Curvularia)和梗霉属(Lichtheimia)。不同沙尘源导致不同频次沙尘天真菌种类差异较大,但优势菌均为曲霉属菌株。沙尘天真菌总数远超过晴天,从中共分离纯化了曲霉菌、链格孢菌、弯孢菌、枝孢菌和青霉菌等5类病原菌,对人类的健康存在潜在健康风险。

In dusty and clear days,the KC-1000 type high flow sampler was used to collect aerosol samples in the Qingdao coastal region during Mar 2013-Apt 2013. Thirdy five fungi were purified from the aerosol samples and identified as the genera of Ascomycota, Penicillittra, Cladosporium, Aspergillus, A lternarina, Chaetomidium, Epicoccum, Curvu＇laria and Lichtheimio, by ITSrDNA. Fungi species in different dusty days might vary, mainly due to the source of dust origin, but the dominant fungi were Aspergillus. The number of fungi species in a dusty day was less than that in a clear day. Five pathogenic fungi were identified including Aspergillus, Alternarina, Curvularia, Claclosporium, and Penicillium. The abundance of pathogenic fungi and toxigenic fungi in a dusty day were much higher than those in a clear day. It showed potential health risk to human health.