| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 4503624 | Biological Control | 2016 | 9 Pages |
•Bacillus velezensis BAC03 enhanced growth on nine selected types of plants.•BAC03 applied 10 days after planting had the best effect in radish growth promotion.•Multiple applications of BAC03 benefited radish biomass increasing.•BAC03 produces IAA and NH3, has ACC deaminase activity as well.
Bacillus velezensis (formerly referred to as Bacillus amyloliquefaciens) strain BAC03 is a plant growth promoting rhizobacterium. It has shown to be antagonistic against Streptomyces scabies in our previous studies, but its efficacy on plant growth promotion needs to be determined. In this study, BAC03 was tested for potential growth promotion on nine selected types of plants, including beet, carrot, cucumber, pepper, potato, radish, squash, tomato, and turnip, at the concentration of 105 colony forming unit cm−3 potting mix under greenhouse conditions. Results showed that BAC03 increased the growth of some tested plants at various levels in different plant parts. Application of BAC03 at 10 days after planting was associated in radish with the highest biomass gain compared to applications at other stages. Multiple applications of BAC03 giving the same total amount of inoculum resulted in higher weights of radish roots and leaves. That BAC03 produced indole-3-acetic acid and ammonia, as well as showed a 1-aminocyclopropane-1-carboxylate deaminase activity may be related to plant growth promotion. Acetoin and 2,3-butanediol were detected as major components of the volatile released from BAC03 by using gas chromatography–mass spectrometry analysis.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
