30320113水产科学FISHERIES SCIENCEVol.30No.3Mar.2011宋霖霞,王素英(, 300134) :ZS7、ZW38ZL5,,YS5、YW5YL3。YS537℃、pH6.8~8.0,,2.471×103U/ml,2.2。YW537℃、pH6.0~7.2,,3.39mg/(L·d),1.5;YL337℃、pH6.0~7.2,,3.05mg/(L·d),1.7。:;;;;:Q939.11:A:1003-1111(2011)03-0148-04:2009-11-24; :2010-06-21.:(2004ZD20).:(1984-),,,:;E-mail:myxia987@163.com.:(1964-),,,,:;E-mail:wsying@tjcu.edu.cn. [1],,,,,[2]。,。、,、、,。。[3],(Carassiusauratus),51%;[4]、3∶2∶1,109cfu/ml,5d,94.0%77.5%。,ZS7,ZW38ZL5,。1 1.1 :ZS7(Xanthobactersp.)、ZW38(Nitrosomonassp.)、ZL5(Paracoc-cussp.)。、[5]、[6]。[7]、[8]。1.2 1.2.1 ,50ml,6000r/min10min,pH7.0PBS3,106cfu/ml。1.2.2 1.2.1 (NTG)1.5ml0.5ml,30℃,150r/min,90min,4℃1004,700W,2450MHz30、60、90s120s,2h,1ml,30℃,。1.2.2 425ml,700W,2450MHz30、60、90s120s,0.5ml,20μg/DOI:10.16378/j.cnki.1003-1111.2011.03.009ml。30℃,150r/min90min,2h,225ml5℃,1ml,,30℃,。1.2.3 ,,。,。1.2.4 1%100ml,30℃,130r/min28h,6000r/min15min,。Folin-(QB1805.3-1993),(GB/T5009.33-1996)。1.2.5 5,,。1.2.6 pHpH2.0、3.0、4.0、5.0、6.0、6.5、7.0、7.2、7.7、8.0、9.0、10.011.05ml,1%,37℃、130r/min,Folin-,。1.2.7 1%5ml,10、15、20、25、30、35、37、40℃45℃ ,,。2 2.1 ,1。1 1,2,,。[8],85%80s。2.2 2.2.1 ZS7ZS710mm,1.113×103U/ml。212,30h,1。1,,42%,33%50%,YS5、YS6、YS12,530h,2。1 YS1YS2YS3YS4YS5YS6YS7YS8YS9YS10YS11YS12/U·ml-173581012351221235622801461632135793510252235/%-33.9-27.210.99.7111.7104.931.3-43.221.9-16-7.9100.82 YS5YS6YS12/U·ml-1247121089852,YS5YS6,YS5,111.7%。2.2.2 ZW38ZL5,30℃,,15,1d,,4d、5d6dZW38,5d6d(2),51493宋霖霞等:海水养殖废水中氨氮降解菌的诱变及培养条件d6d5。pH7.2,30℃,130r/min24h,,ZW385YW1-YW5,ZL55YL1-YL5, 3。2 3 YW1YW2YW3YW4YW5YL1YL2YL3YL4YL5/mg·(L·d)-12.533.222.982.233.46—————/mg·(L·d)-1——-——-—1.982.322.783.152.45注:“—”表示未测定. ZW38,YW2YW5(3),5,YW53.39mg/(L·d),YW22.78mg/(L·d),13.7%。ZL5,YL3YL4,5,YL33.05mg/(L·d),YL4,2.87mg/(L·d)。2.3 2.3.1 YS5YS51%5ml,30h,3。3 YS53,10~37℃,YS5,37℃(2470U/ml),,20~30℃,,,。2.3.2 pHYS5pH,YS51%,37℃,130r/min30h,4。4,YS5pH6.8~8.0,pH。4 pHYS52.3.3 YW5YL32.3.3.1 YW5YL31%YW5YL350ml,80h24h,5。5,10℃YW5YL3,,37℃,,,YW5YL337℃。5 YW5YL32.3.3.2 pHYW5YL31%YW5YL310mlpH,30℃,130r/min。80h,24h,6。6,pH2~6,YW5YL3150水 产 科 学30,pH6~8,pH。,YW5YL3pH6.0~7.2。6 pHYW5YL33 ,、[9]。DNA,,[10]。,,。,2。,,,,,;,,。,[11]。,。,ZS7、ZW38ZL5[12], ,,,,。:[1] .———[D].:,2007.[2] .[D].:,2007.[3] .、[D].:,2005.[4] ,,.[J].,2010,37(4):543-546.[5] ,,.[J].:,2006,23(1):70-72.[6] ,,,.[J].,2008,34(8):79-82.[7] ,,,.[J].,2006,26(5):366-369.[8] TakayaN,Catalan-SakairiMAB,YasushiS,etal.Aerobicdenitrificationbacteriathatproducelowlevelsofnitrousoxide[J].AppliedandEnvironmentalMi-crobiology,2003,68(6):3152-3157.[9] ,,.[J].,1999,39(2):181-184.[10],,,.[J].,2008,36(33):14378-14414.[11].、[D].:,2004.[12],,,.[J].,2009,37(11):4908-4910.MutationandOptimizationofCultureConditionsofAmmonia-degradingBacteriainMaricultureAffluentSONGLin-xia,WANGSu-ying(TianjinFoodandBiotechnologyKeyLaboratory,TianjinUniversityofCommerce,Tianjin300134,China)Abstract:High-yieldstrainsYS5,YW5andYL3weredevelopedfromoriginalbacteria—ZS7,ZW38andZL5mutagenizedbyamicrowaveandNTG.ThemutantstrainYS5hadenzymeactivityof2.471×103U/ml,increasingbyalmost2.2timesattheconditionofpH6.8~8.0,andtemperatureof37℃.TheYW5andYL3werefoundtoincreaseingenerationrateofnitritealmostby1.5timesand1.7timesof3.39mg/(L·d)forYW5and3.05mg/(L·d)forYL3.Keywords:aquacultureeffluent;NTG;nitrosobacterium;denitrobacterium;eutrophication1513宋霖霞等:海水养殖废水中氨氮降解菌的诱变及培养条件