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利用CRISPR/Cas 9编辑红曲霉pyrG基因对其次生代谢的影响 被引量:3
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作者 唐光甫 桂艳玲 +1 位作者 满海乔 赵杰宏 《生物技术通报》 CAS CSCD 北大核心 2022年第8期198-205,共8页
为研究红曲霉pyrG基因对其次生代谢的影响,通过农杆菌介导遗传转化获得了转Cas 9基因的红曲霉底盘菌株,然后设计并体外转录合成pyrG基因的定向编辑sgRNA,对底盘菌株的原生质体遗传转化,经5-FOA抗性筛选、PCR扩增、T7EI酶切和测序验证,获... 为研究红曲霉pyrG基因对其次生代谢的影响,通过农杆菌介导遗传转化获得了转Cas 9基因的红曲霉底盘菌株,然后设计并体外转录合成pyrG基因的定向编辑sgRNA,对底盘菌株的原生质体遗传转化,经5-FOA抗性筛选、PCR扩增、T7EI酶切和测序验证,获得pyrG基因定向编辑的红曲霉4个菌株,其中2株单碱基缺失,2株2碱基缺失。比较分析表明,野生型红曲霉在添加尿嘧啶核苷的培养基中会极显著增加洛伐他汀含量,并极显著降低桔霉素含量,而经CRISPR/Cas 9失活pyrG的变异菌株与野生型相比,洛伐他汀和桔霉素含量明显增加。表明尿嘧啶核苷合成关键酶基因pyrG和外源尿嘧啶核苷对红曲霉的次生代谢有协同调控作用,为红曲霉功能基因研究和次生代谢调控提供参考。 展开更多
关键词 CRISPR/Cas 9 紫色红曲霉 pyrG变异株 原生质体 底盘菌株
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Rapid Preparation of Filamentous Fungal DNA for PCR Analysis by Ultrasonic Treatment
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作者 gui yan-ling Han Jie Zhao Jie-hong 《Journal of Northeast Agricultural University(English Edition)》 CAS 2023年第2期89-96,共8页
A simple method to prepare of DNA template suitable for PCR amplification from filamentous fungi will be valuable for improving experimental efficiency.Here,a method was developed which just needed ultrasonic treatmen... A simple method to prepare of DNA template suitable for PCR amplification from filamentous fungi will be valuable for improving experimental efficiency.Here,a method was developed which just needed ultrasonic treatment of the mycelium at usual condition,and the produced solution could directly be used as DNA template for internal transcribed spacer(ITS)amplification successfully.The PCR could be improved by additional treatment of 60℃water baths,but was not centrifugation.When the template amount was 0.5-2μL and the ultrasonic time was 7-11 min,there was no distinctly influences on PCR.The method was commonly used for M.purpureus,I.cicadae,Lentinula sp.,Flammul sp.and Dictyophora sp.etc.to detect target sequences of ITS,hygromycin resistance gene(Hyg),CRISPR-associated protein 9(Cas9),Citrinin gene C(CtnC),Citrinin gene D(CtnD),large subunit rRNA gene(NL),and so on.The method could provide a simple,rapid,safe and economic approach to prepare the DNA template for large-scale PCR of the special filamentous fungi materials. 展开更多
关键词 filamentous fungi rapid PCR DNA template preparation ultrasonic treatment
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