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Development of an efficient vector system for gene knock-out and near in-cis gene complementation in the sugarcane smut fungus.


ABSTRACT: Sporisorium scitamineum is the causative agent responsible for smut disease of sugarcane worldwide. However, lack of efficient gene manipulation system makes this fungus much behind the type model of the smut fungi in molecular biology. Here, we report the development of a CRISPR/Cas9 and T-DNA based dual vector system that allowed efficient knock-out or knock-in of a gene of interest in the S. scitamineum in a site-specific manner. By using Mfa2, a key player in the mating event in S. scitamineum as a tester gene, site-specific insertions of the introduced fragments were achieved both for Mfa2 knockout and complementation. Of particular advantage of this system is the simplicity of selection and identification for the desired transformants by using drug resistance coupled with PCR. This system greatly facilitates the gene function study in S. scitamineum, and could potentially be used for other basidiomycete fungi.

SUBMITTER: Lu S 

PROVIDER: S-EPMC5465213 | biostudies-other | 2017 Jun

REPOSITORIES: biostudies-other

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Development of an efficient vector system for gene knock-out and near in-cis gene complementation in the sugarcane smut fungus.

Lu Shan S   Shen Xiaorui X   Chen Baoshan B  

Scientific reports 20170608 1


Sporisorium scitamineum is the causative agent responsible for smut disease of sugarcane worldwide. However, lack of efficient gene manipulation system makes this fungus much behind the type model of the smut fungi in molecular biology. Here, we report the development of a CRISPR/Cas9 and T-DNA based dual vector system that allowed efficient knock-out or knock-in of a gene of interest in the S. scitamineum in a site-specific manner. By using Mfa2, a key player in the mating event in S. scitamine  ...[more]

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