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Article

Biological Control of Take-All and Growth Promotion in Wheat by Pseudomonas chlororaphis YB-10

1
Institute of Plant Protection Research, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
2
Henan International Joint Laboratory of Crop Protection, Henan Biopesticide Engineering Research Center, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
3
Department of Plant Pathology, College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China
4
School of Environmental Sciences, University of Guelph, Guelph, ON N1G2W1, Canada
5
Department of Plant Pathology, College of Plant Protection, China Agricultural University, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Academic Editors: Huijun Wu and Xuewen Gao
Pathogens 2021, 10(7), 903; https://doi.org/10.3390/pathogens10070903
Received: 11 May 2021 / Revised: 7 July 2021 / Accepted: 13 July 2021 / Published: 17 July 2021
Wheat is a worldwide staple food crop, and take-all caused by Gaeumannomyces graminis var. tritici can lead to a tremendous decrease in wheat yield and quality. In this study, strain YB-10 was isolated from wheat rhizospheric soil and identified as Pseudomonas chlororaphis by morphology and 16S rRNA gene sequencing. Pseudomonas chlororaphis YB-10 had extracellular protease and cellulase activities and strongly inhibited the mycelium growth of Gaeumannomyces graminis var. tritici in dual cultures. Up to 87% efficacy of Pseudomonas chlororaphis YB-10 in controlling the take-all of seedlings was observed in pot experiments when wheat seed was coated with the bacterium. Pseudomonas chlororaphis YB-10 was also positive for indole acetic acid (IAA) and siderophore production, and coating wheat seed with the bacterium significantly promoted the growth of seedlings at 107 and 108 CFU/mL. Furthermore, treatment with Pseudomonas chlororaphis YB-10 increased activities of the wheat defense-related enzymes POD, SOD, CAT, PAL and PPO in seedlings, indicating induced resistance against pathogens. Overall, Pseudomonas chlororaphis YB-10 is a promising new seed-coating agent to both promote wheat growth and suppress take-all. View Full-Text
Keywords: take-all; biocontrol; growth-promoting; Pseudomonas chlororaphis; Gaeumannomyces graminis var. tritici take-all; biocontrol; growth-promoting; Pseudomonas chlororaphis; Gaeumannomyces graminis var. tritici
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MDPI and ACS Style

Xu, W.; Xu, L.; Deng, X.; Goodwin, P.H.; Xia, M.; Zhang, J.; Wang, Q.; Sun, R.; Pan, Y.; Wu, C.; Yang, L. Biological Control of Take-All and Growth Promotion in Wheat by Pseudomonas chlororaphis YB-10. Pathogens 2021, 10, 903. https://doi.org/10.3390/pathogens10070903

AMA Style

Xu W, Xu L, Deng X, Goodwin PH, Xia M, Zhang J, Wang Q, Sun R, Pan Y, Wu C, Yang L. Biological Control of Take-All and Growth Promotion in Wheat by Pseudomonas chlororaphis YB-10. Pathogens. 2021; 10(7):903. https://doi.org/10.3390/pathogens10070903

Chicago/Turabian Style

Xu, Wen, Lingling Xu, Xiaoxu Deng, Paul H. Goodwin, Mingcong Xia, Jie Zhang, Qi Wang, Runhong Sun, Yamei Pan, Chao Wu, and Lirong Yang. 2021. "Biological Control of Take-All and Growth Promotion in Wheat by Pseudomonas chlororaphis YB-10" Pathogens 10, no. 7: 903. https://doi.org/10.3390/pathogens10070903

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