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KMID : 0545120160260030488
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Journal of Microbiology and Biotechnology
2016 Volume.26 No. 3 p.488 ~ p.492
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A Leaf-Inhabiting Endophytic Bacterium, Rhodococcus sp. KB6, Enhances Sweet Potato Resistance to Black Rot Disease Caused by Ceratocystis fimbriata
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Hong Chi-Eun
Jeong Hae-Young
Jo Sung-Hee
Jeong Jae-Cheol
Kwon Suk-Yoon
An Dong-Hwan
Park Jeong-Mee
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Abstract
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Rhodococcus species have become increasingly important owing to their ability to degrade a wide range of toxic chemicals and produce bioactive compounds. Here, we report isolation of the Rhodococcus sp. KB6, which is a new leaf-inhabiting endophytic bacterium that suppresses black rot disease in sweet potato leaves. We determined the 7.0 Mb draft genome sequence of KB6 and have predicted 19 biosynthetic gene clusters for secondary metabolites, including heterobactins, which are a new class of siderophores. Notably, we showed the first internal colonization of host plants with Rhodococcus sp. KB6 and discuss its potential as a biocontrol agent for sustainable agriculture.
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KEYWORD
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Bacterial endophyte, biocontrol agent, black rot disease, Rhodococcus sp., sweet potato
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