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湖泊科学  2008 

太湖磷转化细菌与水体磷形态关系

DOI: 10.18307/2008.0404

Keywords: ,磷分解细菌,太湖

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Abstract:

太湖水体中不同形态磷含量与磷转化细菌的关系研究结果显示:太湖水体中总磷和活性磷的含量分别为0.113mg/L和0.011mg/L;无机磷和有机磷分解菌在底泥中达6.73×105cells/g,而在水体中仅为71cells/ml,且存在明显的时间和空间差异;根据菌落形态特征,分离筛选了3株有代表性的无机磷转化菌和7株占优势的有机磷分解菌.3株无机磷转化菌经鉴定分别与巨大芽孢杆菌(Bacillusmegaterium)、假单孢菌(Pseudomonassp.)和类芽孢杆菌(Paenibacillussp.)比较接近.而7株有机磷分解菌则分别与为苏云金芽孢杆菌(Bacillusthurigiensis)、短小芽孢杆菌(Bacilluspumilus)、芽孢杆菌(Bacillussp.)、无芽孢杆菌(Bacteriumsp.)、氧化微杆菌(Microbacteriumoxydans)腊状芽孢杆菌(Bacilluscereus)、简单芽孢杆菌(Bacillussimples)接近;太湖水体中磷分解细菌主要归属于芽孢杆菌属(Bacillus)和假单孢菌属(Pseudomonas),对细菌降解性能进行研究的结果显示:无机磷分解细菌对太湖水体活性磷的贡献显著大于有机磷分解细菌的贡献率.

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