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Microorganisms
Volume 8
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10.3390/microorganisms8121943
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Article

Burkholderia gladioli CGB10: A Novel Strain Biocontrolling the Sugarcane Smut Disease

by
Guobing Cui
1,2,3,
Kai Yin
1,2,3,
Nuoqiao Lin
1,2,3,
Meiling Liang
1,2,3,
Chengwei Huang
3,
Changqing Chang
2,
Pinggen Xi
3 and
Yi Zhen Deng
1,2,3,*
1
Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Plant Protection, South China Agricultural University, Guangzhou 510642, China
2
Guangdong Province Key Laboratory of Microbial Signals and Disease Control, Integrative Microbiology Research Centre, South China Agricultural University, Guangzhou 510642, China
3
Department of Plant Pathology, South China Agricultural University, Guangzhou 510642, China
*
Author to whom correspondence should be addressed.
Microorganisms 2020, 8(12), 1943; https://doi.org/10.3390/microorganisms8121943
Submission received: 22 October 2020 / Revised: 27 November 2020 / Accepted: 4 December 2020 / Published: 7 December 2020
(This article belongs to the Section Antimicrobial Agents and Resistance)
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Abstract

In this study, we isolated an endophytic Burkholderia gladioli strain, named CGB10, from sugarcane leaves. B. gladioli CGB10 displayed strong inhibitory activity against filamentous growth of fungal pathogens, one of which is Sporisorium scitamineum that causes sugarcane smut, a major disease affecting the quality and production of sugarcane in tropical and subtropical regions. CGB10 could effectively suppress sugarcane smut under field conditions, without itself causing any obvious damage or disease, thus underscoring a great potential as a biocontrol agent (BCA) for the management of sugarcane smut. A toxoflavin biosynthesis and transport gene cluster potentially responsible for such antifungal activity was identified in the CGB10 genome. Additionally, a quorum-sensing gene cluster was identified too and compared with two close Burkholderia species, thus supporting an overall connection to the regulation of toxoflavin synthesis therein. Overall, this work describes the in vitro and field Sporisorium scitamineum biocontrol by a new B. gladioli strain, and reports genes and molecular mechanisms potentially involved.
Keywords: antagonistic; bio-control agent; Burkholderia gladioli; Sporisorium scitamineum; toxoflavin antagonistic; bio-control agent; Burkholderia gladioli; Sporisorium scitamineum; toxoflavin

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MDPI and ACS Style

Cui, G.; Yin, K.; Lin, N.; Liang, M.; Huang, C.; Chang, C.; Xi, P.; Deng, Y.Z. Burkholderia gladioli CGB10: A Novel Strain Biocontrolling the Sugarcane Smut Disease. Microorganisms 2020, 8, 1943. https://doi.org/10.3390/microorganisms8121943

AMA Style

Cui G, Yin K, Lin N, Liang M, Huang C, Chang C, Xi P, Deng YZ. Burkholderia gladioli CGB10: A Novel Strain Biocontrolling the Sugarcane Smut Disease. Microorganisms. 2020; 8(12):1943. https://doi.org/10.3390/microorganisms8121943

Chicago/Turabian Style

Cui, Guobing, Kai Yin, Nuoqiao Lin, Meiling Liang, Chengwei Huang, Changqing Chang, Pinggen Xi, and Yi Zhen Deng. 2020. "Burkholderia gladioli CGB10: A Novel Strain Biocontrolling the Sugarcane Smut Disease" Microorganisms 8, no. 12: 1943. https://doi.org/10.3390/microorganisms8121943

APA Style

Cui, G., Yin, K., Lin, N., Liang, M., Huang, C., Chang, C., Xi, P., & Deng, Y. Z. (2020). Burkholderia gladioli CGB10: A Novel Strain Biocontrolling the Sugarcane Smut Disease. Microorganisms, 8(12), 1943. https://doi.org/10.3390/microorganisms8121943

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