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United States Department of Agriculture

Agricultural Research Service

Research Project: Integrated Strategies for Advanced Management of Fruit, Nut, and Oak Tree Diseases

Location: Crops Pathology and Genetics Research

Title: Efficient sequential repetitive gene deletions in Neurospora crassa

item Szewczyk, Edyta
item Kasuga, Takao
item Fan, Zhiliang

Submitted to: Journal of Microbiological Methods
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 1/10/2013
Publication Date: 3/1/2013
Publication URL:
Citation: Szewczyk, E., Kasuga, T., Fan, Z. 2013. Efficient sequential repetitive gene deletions in Neurospora crassa. Journal of Microbiological Methods. 92:236-243.

Interpretive Summary: A plant decomposing fungus, Neurospora crassa, has been used for the study of biochemistry and cellular biology. In this study, we have developed a molecular biological method, which allows us to sequentially manipulate genes to create desirable genotypes. This method is highly valuable for bioengineering as well as functional genomics study.

Technical Abstract: Despite its long-standing history as a model organism, Neurospora crassa has limited tools for repetitive gene deletions utilizing recyclable self-excising marker systems. Here we describe, for the first time, the functionality of a bacterial recombination system employing ß-recombinase acting on six recognition sequences (ß-rec/six) in N. crassa, which allowed repetitive site-specific gene deletion and marker recycling. We report generating the mus-51 deletion strain using this system, recycling the marker cassette, and subsequently deleting the global transcriptional regulator gene cre-1.

Last Modified: 07/25/2017
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