Effect of the biocontrol bacterium Bacillus amyloliquefaciens on the rhizosphere in ginseng plantings

International Microbiology : the Official Journal of the Spanish Society for Microbiology
Lei TianChunjie Tian

Abstract

Panax ginseng is an important medicinal herb due to its ability to strengthen the human immune system. However, due to the increasing needs of ginseng in medicine, the continuous cropping of ginseng has become more common and has resulted in increased problems with fungal decay. Thus, chemical fungicides are commonly used in ginseng plantings, which have caused fungicide residue problems. As an alternative control measure, biocontrol bacteria can be used to manage fungal pathogens. Additionally, these bacteria are environmentally friendly and can also improve stress tolerance in plants. In this study, an antifungal bacterial strain, TB6, that possesses ACC deaminase activity was isolated from the rhizosphere of ginseng plants. This strain was identified as Bacillus amyloliquefaciens. TB6 was applied to 2-year-old ginseng seedlings for a 2-year period, and its impact on the soil rhizosphere was evaluated. The results revealed that strain TB6 decreased fungal abundance and diversity; improved urease, catalase, and phosphatase activities; and decreased the cellulase activity of the rhizosphere soil. In addition, strain TB6 also promoted root growth and increased the fresh weight of ginseng roots, in addition to increasing polyphen...Continue Reading

References

Mar 1, 1970·Analytical Biochemistry·G CohenJ Marcus
Aug 1, 2007·Journal of Industrial Microbiology & Biotechnology·Muhammad SaleemAhmad Saeed Bhatti
Feb 26, 2008·Applied and Environmental Microbiology·Jeremy A FrankGary J Olsen
May 28, 2011·American Journal of Botany·Claus HolzapfelDavid Kafkewitz

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Citations

Mar 11, 2020·International Journal of Molecular Sciences·Lei TianChunjie Tian

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Datasets Mentioned

BETA
KY684936

Methods Mentioned

BETA
PCR
electrophoresis

Software Mentioned

SPSS
MEGA
Quantity One
vegan
R

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