南京林业大学学报(自然科学版)
南京林業大學學報(自然科學版)
남경임업대학학보(자연과학판)
JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCE EDITION)
2014年
2期
123-127
,共5页
纸机%造纸白水%16S rDNA%细菌多样性%水生施莱格尔氏菌
紙機%造紙白水%16S rDNA%細菌多樣性%水生施萊格爾氏菌
지궤%조지백수%16S rDNA%세균다양성%수생시래격이씨균
paper machine%whitewater%16S rDNA%bacterial diversity%Schlegelella aquatica
在制浆造纸过程中,白水的循环回用加重了纸机微生物污染的问题,促进了纸机腐浆的形成,影响了纸机的正常运转。此次研究用滤膜抽滤富集细菌菌体,对白水样品直接提取DNA,通过16S rDNA序列分析,构建16S rDNA文库,对芬欧汇川( UPM)常熟纸厂 PM1纸机白水中的细菌多样性进行了研究。获得的61个16S rDNA序列可分为28个可操作分类单元( OTUs ),分属于6个不同门类,优势菌种顺序为变形菌门(Proteobacteria)(77.05%)、厚壁菌门(Firmicutes)(11.48%)、放线菌门(Actinobacteria)(4.92%)、异常球菌-栖热菌门(Deinococcus-Thermus)(3.28%)、拟杆菌门(Bacteroidetes)(1.64%)、蓝藻门(Cyanobacteria)(1.64%)。造纸白水具有较丰富的细菌多样性,以变形菌为优势菌群,占库容总量的77.05%,其中尤以β-变形菌群为主,占库容总量的45?90%,而首次在中国纸机鉴定出的水生施莱格尔氏菌( Schlegelella aquatica)为克隆文库的优势菌株,另外还含有2个菌种属于异常球菌-栖热菌门,该菌门为红色腐浆形成菌种。
在製漿造紙過程中,白水的循環迴用加重瞭紙機微生物汙染的問題,促進瞭紙機腐漿的形成,影響瞭紙機的正常運轉。此次研究用濾膜抽濾富集細菌菌體,對白水樣品直接提取DNA,通過16S rDNA序列分析,構建16S rDNA文庫,對芬歐彙川( UPM)常熟紙廠 PM1紙機白水中的細菌多樣性進行瞭研究。穫得的61箇16S rDNA序列可分為28箇可操作分類單元( OTUs ),分屬于6箇不同門類,優勢菌種順序為變形菌門(Proteobacteria)(77.05%)、厚壁菌門(Firmicutes)(11.48%)、放線菌門(Actinobacteria)(4.92%)、異常毬菌-棲熱菌門(Deinococcus-Thermus)(3.28%)、擬桿菌門(Bacteroidetes)(1.64%)、藍藻門(Cyanobacteria)(1.64%)。造紙白水具有較豐富的細菌多樣性,以變形菌為優勢菌群,佔庫容總量的77.05%,其中尤以β-變形菌群為主,佔庫容總量的45?90%,而首次在中國紙機鑒定齣的水生施萊格爾氏菌( Schlegelella aquatica)為剋隆文庫的優勢菌株,另外還含有2箇菌種屬于異常毬菌-棲熱菌門,該菌門為紅色腐漿形成菌種。
재제장조지과정중,백수적순배회용가중료지궤미생물오염적문제,촉진료지궤부장적형성,영향료지궤적정상운전。차차연구용려막추려부집세균균체,대백수양품직접제취DNA,통과16S rDNA서렬분석,구건16S rDNA문고,대분구회천( UPM)상숙지엄 PM1지궤백수중적세균다양성진행료연구。획득적61개16S rDNA서렬가분위28개가조작분류단원( OTUs ),분속우6개불동문류,우세균충순서위변형균문(Proteobacteria)(77.05%)、후벽균문(Firmicutes)(11.48%)、방선균문(Actinobacteria)(4.92%)、이상구균-서열균문(Deinococcus-Thermus)(3.28%)、의간균문(Bacteroidetes)(1.64%)、람조문(Cyanobacteria)(1.64%)。조지백수구유교봉부적세균다양성,이변형균위우세균군,점고용총량적77.05%,기중우이β-변형균군위주,점고용총량적45?90%,이수차재중국지궤감정출적수생시래격이씨균( Schlegelella aquatica)위극륭문고적우세균주,령외환함유2개균충속우이상구균-서열균문,해균문위홍색부장형성균충。
Paper machines offer a suitable environment for microbial growth, which results in slime problems during the process of papermaking. Investigation of the bacterial diversity in whitewater which recycled in paper mill UPM was car-ried out in this paper. Total DNA were directly extracted from the whitewater sample. 16S rDNA were amplified directly from purified DNA by PCR with universally bacteria-specific rDNA primers and cloned. Sixty-one bacteria were identified by partial sequencing of their 16S rDNAs. Twenty-eight operational taxonomic units ( OTUs) were clustered in the follow-ing phyla including Proteobacteria ( 77. 05%) , Firmicutes ( 11. 48%) , Actinobacteria ( 4. 92%) , Deinococcus-Thermus (3.28%), Bacteroidetes(1.64%),Cyanobacteria(1.64%). Bacterial diversity was high in the whitewater sample. The results showed a high proportion of Schlegelella aquatica in the white water samples. It was the first time that Schlegelella aquatica strain had been identified from a paper machine in China. We also identified the red-slime formation bacteria Deinococcus-Thermus in whitewater sample.