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页数:7页
时间:2019-05-19
《水仙温度诱导脂质运载蛋白基因NtTIL的克隆与表达分析》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、园艺学报,2016,43(1):161–167.ActaHorticulturaeSinicadoi:10.16420/j.issn.0513-353x.2015-0505;http://www.ahs.ac.cn161水仙温度诱导脂质运载蛋白基因NtTIL的克隆与表达分析1,*2,*1111,**丁安琪,冯莹,朱里莹,徐世荣,秦军,潘东明12(福建农林大学园艺产品贮运保鲜研究所,福州350002;泉州师范学院资源与环境科学学院,福建泉州362000)摘要:采用PCR法,从水仙(Narcissustazettavar.chinensis)鳞茎主芽中分离
2、克隆到1个温度诱导脂质运载蛋白基因NtTIL。该基因含有567bp开放阅读框,编码188个氨基酸。该基因属于lipocalin-2superfamily基因家族;推导的氨基酸序列含有SCR1、SCR2和SCR33个植物lipocalin的典型结构域,与小麦、拟南芥等植物的同源性大于75%;编码的蛋白为稳定酸性亲水蛋白,不含有信号肽,进行N末端朝外由外到内的跨膜运动。qRT-PCR结果分析表明,水仙生长发育过程中鳞茎膨大期NtTIL表达量较低;休眠期表达量先升高后降低。推测NtTIL对水仙鳞茎主芽休眠具有一定调控作用。关键词:水仙;温度诱导运载蛋白;克隆
3、;表达;夏休眠+中图分类号:S682.21文献标志码:A文章编号:0513-353X(2016)01-0161-07CloningandExpressionAnalysisofTemperature-inducedLipocalininNarcissustazettavar.chinensis1,*2,*1111,**DINGAn-qi,FENGYing,ZHULi-ying,XUShi-rong,QINJun,andPANDong-ming1(InstituteofPostharvestScienceandTechnologyofHorticultu
4、ralProducts,FujianAgricultureandForestryUniversity,2Fuzhou,350002,China;SchoolofResourceandEnvironmentalScience,QuanzhouNormalUniversity,Quanzhou,Fujian362000,China)Abstract:Anencodingtemperature-inducedlipocalin(TIL)geneNtTILwasseparatedandcloningbyPCRinNarcissustazettavar.chin
5、ensis.TheopenreadingframeofNtTILwas567bp,encodingaproteinof188aminoacids.BiologicalsoftwareforNtTILproteinanalysisshowedthat:Thegenebelongstolipocalin-2superfamilygenefamily;typicaldomainsdeducedfromaminoacidsequencecontainedSCR1,SCR2andSCR3threeofbotanicallipocalin.It’shomology
6、greaterthanwheat,Arabidopsisandotherplants75%.Sequenceanalysesrevealedthatthisproteinwasstableandhydrophilicwithoutsignalpeptides;transmembranemovementwasfromoutsidetoinsideintheoutwardN-terminus,thentransmembrane.Andtherelativeexpressionofthisgenewassurveyedbyreal-timequantitat
7、ivePCRduringdifferentgrowthstage.Theresultsshowedthatitsrelativeexpressionduringdifferentgrowthstagewasdifferent;theNtTILexpressionwaslowinbulbswellingstage,expressionincreasedandthenreducedindormancystage,andexpressionincreasedslightlyinflowerdifferentiationstage.Inconclusion,i
8、t收稿日期:2015–10–31;修回日期:2015–12–11基金项目:福建省高水平大学建设
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