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Chu D, Wang X, Fan J, Peng L, Liang J, Zheng Y, Wang R, You X, Jing C, Clark J, Li Y, Yuan Y. Ulva prolifera polysaccharide enhances the root colonisation by Bacillus amyloliquefaciens strain Cas02. Carbohydr Polym 2023; 299:120171. [PMID: 36876786 DOI: 10.1016/j.carbpol.2022.120171] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/15/2022] [Accepted: 09/26/2022] [Indexed: 10/14/2022]
Abstract
The application of biocontrol agent is important for the sustainable development of agriculture. Unsuccessful or limited colonisation by plant growth-promoting rhizobacteria (PGPR) has become an important constraint factor for their commercial application. Here, we report that Ulva prolifera polysaccharide (UPP) promotes root colonisation by Bacillus amyloliquefaciens strain Cas02. UPP serves as an environmental signal for bacterial biofilm formation and its glucose residue is used as a carbon source for the synthesis of the exopolysaccharides and poly-gamma-glutamate present in biofilm matrix. Greenhouse experiments demonstrated that UPP could effectively enhance the root colonisation by Cas02 in both the bacterial population and survival time under natural semiarid soil conditions. Furthermore, the microbiome analysis also indicated the promoted colonisation by Cas02, as well as the improved bacterial rhizosphere community structure, after combined treatment of UPP and Cas02. This study provides a practical approach to improve the biocontrol agent with seaweed polysaccharides.
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Affiliation(s)
- Depeng Chu
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Xiaoqiang Wang
- Key Laboratory of Tobacco Pest Monitoring & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Jiajun Fan
- Green Chemistry Centre of Excellence, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Lijuan Peng
- Yunnan Tobacco Quality Supervision and Test Station, Kunming 650106, China
| | - Jinchang Liang
- Key Laboratory of Tobacco Pest Monitoring & Integrated Management, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Yanfen Zheng
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Rui Wang
- Enshi Tobacco Science and Technology Center, Enshi 445000, China
| | - Xiangwei You
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - Changliang Jing
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China
| | - James Clark
- Green Chemistry Centre of Excellence, University of York, Heslington, York YO10 5DD, United Kingdom
| | - Yiqiang Li
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
| | - Yuan Yuan
- Marine Agriculture Research Center, Tobacco Research Institute of Chinese Academy of Agricultural Sciences, Qingdao 266101, China.
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