Abstract:
:Large patch disease, caused by Rhizoctonia solani AG2-2, is the most devastating disease in Zoysiagrass (Zoysia japonica). Current large patch disease control strategies rely primarily upon the use of chemical pesticides. Streptomyces sp. S8 is known to possess exceptional antagonistic properties that could potentially suppress the large patch pathogen found at turfgrass plantations. This study aims to demonstrate the feasibility of using the strain as a biological control mechanism. Sequencing of the S8 strain genome revealed a valinomycin biosynthesis gene cluster. This cluster is composed of the vlm1 and vlm2 genes, which are known to produce antifungal compounds. In order to verify this finding for the large patch pathogen, a valinomycin biosynthesis knockout mutant was created via the CRISPR/Cas9 system. The mutant lost antifungal activity against the large patch pathogen. Consequently, it is anticipated that eco-friendly microbial preparations derived from the S8 strain can be utilized to biologically control large patch disease.
journal_name
World J Microbiol Biotechnoljournal_title
World journal of microbiology & biotechnologyauthors
Jeon CW,Kim DR,Kwak YSdoi
10.1007/s11274-019-2704-zsubject
Has Abstractpub_date
2019-08-02 00:00:00pages
128issue
8eissn
0959-3993issn
1573-0972pii
10.1007/s11274-019-2704-zjournal_volume
35pub_type
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