【摘要】：沉水植物附生細菌可能具有降解轉(zhuǎn)化水體中雙酚A(BPA)能力從而影響該污染物在環(huán)境中的歸趨.以輪葉黑藻為代表,分離篩選其BPA降解附生菌,結(jié)果共獲得22株,在接種量為1×10~8個/m L,37℃下72h對BPA的去除率為11.46%~25.06%.選擇降解率最高的3株細菌B12、B14和B23,采用16S r DNA鑒定,結(jié)合生理生化反應(yīng)和形態(tài)觀察,3株細菌分別為屬于Lysinibacillus sp.(桿菌屬),Brevibacterium sp.(短桿菌屬)和Ochrobactrum sp.(蒼白桿菌屬).將3株菌株添加至輪葉黑藻無菌苗體系中,發(fā)現(xiàn)BPA去除率顯著下降(P0.05).物理去除部分野生輪葉黑藻表面部分附生細菌后,BPA去除率反而上升(約5%).綜合本研究結(jié)果,沉水植物附生細菌具有降解BPA的能力,但在沉水植物-附生生物體系去除BPA過程中貢獻較小(約為23%,2d),植物本身起關(guān)鍵作用.
[Abstract]:The epiphytic bacteria of submerged plants may have the ability to degrade bisphenol A (BPA) in the transformed water, thus affecting the fate of the pollutants in the environment. In this paper, 22 strains of BPA degrading epiphytic bacteria were isolated and screened, and the removal rate of BPA was 11.46% 25.06% at inoculation amount of 1 脳 10 ~ 8 / mL 路L ~ (-1) 路L ~ (-1) ~ 37 鈩，

本文編號：2195515