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Title 

Citrinin, a mycotoxin from Penicillium citrinum, plays a role in inducing motility of Paenibacillus polymyxa

Authors 

Soo Young ParkR KimChoong-Min RyuSoo Keun ChoiC H LeeJ G KimSeung Hwan Park

Publisher 

Wiley-Blackwell

Issue Date 

2008

Citation 

FEMS Microbiology Ecology, vol. 65, no. 2, pp. 229-237

Keywords 

chemotactic motilitycitrininpaenibacillus polymyxapenicillium citrinumswarming motilitymycotoxinagarbacterial proteinsconference papergenetic analysis

Abstract 

Paenibacillus polymyxa, a Gram-positive low-G+C spore-forming soil bacterium, belongs to the plant growth-promoting rhizobacteria. The swarming motility of P. polymyxa strain E681 was greatly induced by a secondary metabolite, citrinin, produced by Penicillium citrinum KCTC6549 in a dose-dependent manner at concentrations of 2.5-15.0 μg mL-1 on tryptic soy agar plates containing 1.0% (w/v) agar. Flagellum staining showed that citrinin activated the production of flagella by P. polymyxa. This result was supported by reverse transcriptase-PCR analysis of gene expression, which showed increased transcriptional levels of sigD and hag homologues of P. polymyxa E681 in the presence of citrinin. The results presented here show that a mycotoxin, citrinin, has a newly identified function of inducing bacterial motility by transcriptional activation of related genes. This finding contributes to our understanding of the interactions between bacteria and fungal strains in nature.

ISSN 

0168-6496

Link 

http://dx.doi.org/10.1111/j.1574-6941.2008.00492.x

Appears in Collections

1. Journal Articles > Journal Articles

Registered Date

2019-05-02


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