Advanced Journal of Microbiology Research

ISSN 2736-1756

Advanced Journal of Microbiology Research ISSN 2241-9837 Vol. 12 (2), pp. 001-007, February, 2018. © International Scholars Journals

Full Length Research Paper

Inhibitory activity of Paenibacillus macerans and Paenibacillus polymyxa against Ralstonia solanacearum

Bin Li1*, Ting Su1, Rongrong Yu2, Zhongyun Tao1, Zhiyi Wu3, Soad A. E. Algam1, Guanlin Xie1, Yanli Wang4 and Guochang Sun4

1State Key Laboratory of Rice Biology, Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Ministry of Agriculture, Institute of Biotechnology, Zhejiang University, Hangzhou 310029, China.

2School of Education Science and Technology, Zhejiang University of Technology, Hangzhou 310032, China.

3Zhejiang Academy of Science and Technology for Inspection and Quarantine, Hangzhou 310012, China.

4Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.

Accepted 11 November, 2017

Abstract

The inhibitory activities of seven Paenibacillus polymyxa strains and nine Paenibacillus macerans strains against Ralstonia solanacearum strains were examined. Result from this study indicated that the growth of all R. solanacearum strains except strain E406 were inhibited by P. macerans MB02-992 and P. polymyxa MB02-1007, while the other fourteen Paenibacillus strains had no in vitro inhibitory effect against R. solanacearum strains. In addition, suspensions of the two antagonistic bacteria showed antibacterial activities against R. solanacearum under different treatments and reduced the disease incidence and severity of tomato bacterial wilt. Overall, this study clearly demonstrates that antagonistic substances may play an important role in biocontrol of the two antagonistic bacteria. However, antimicrobial activities of P. macerans and P. polymyxa depend on the Paenibacillus strains and the target pathogen. This is the first report about the antibacterial activities of Paenibacillus strains against R. solanacearum strains isolated from different host plants.

Key words: Paenibacillus, antagonistism, biovar, Ralstonia solanacearum, tomato wilt.

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Yanli Wang and Guochang Sun on Google Scholar Yanli Wang and Guochang Sun on Pubmed Zhongyun Tao on Google Scholar Zhongyun Tao on Pubmed Guanlin Xie on Google Scholar Guanlin Xie on Pubmed Soad A. E. Algam on Google Scholar Soad A. E. Algam on Pubmed Zhiyi Wu on Google Scholar Zhiyi Wu on Pubmed Bin Li* on Google Scholar Bin Li* on Pubmed Ting Su on Google Scholar Ting Su on Pubmed Rongrong Yu on Google Scholar Rongrong Yu on Pubmed