Publication Date:
2016-09-01
Description:
As efficient reverse genetic tools are lacking, molecular genetics research has been limited in Hypsizygus marmoreus . In this study, we firstly constructed a gene-silencing method using a dual promoter vector (DPV) which was driven by gpd and 35 S promoters. The DPV was introduced into H. marmoreus via a simple electroporation procedure and the highest silenced rate of ura3 gene was 76.6%, indicating that the DPV might be suitable for gene silencing in basidiomycete. In this silencing system, the endogenous orotidine 5′-monophosphate decarboxylase gene ( ura3 ) was used as a selectable marker. Besides, we also constructed another silencing system which could silence the ura3 and other genes ( lcc1 encoded laccase1) together in H. marmoreus , and named it as co-silencing system. In the co-silenced transformants, we found that the mycelia were thinner and the growth was slower than in the wild-type and control2 strains, which was accordant with the previous study of lcc1 gene, indicating that the selective efficiency of the RNAi-mediated silencing of several genes might be increased by co-silencing ura3 . The development of this molecular tool might improve functional studies of multiple genes in the basidiomycete H. marmoreus and also provide a reference for studies of other basidiomycetes.
Print ISSN:
0233-111X
Electronic ISSN:
1521-4028
Topics:
Biology
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