Bacillus subtilis HG-15, a Halotolerant Rhizoplane Bacterium, Promotes Growth and Salinity Tolerance in Wheat (Triticum aestivum)

Certain plant growth-promoting bacteria (PGPB) reduce salt stress damage in plants. Bacillus subtilis HG-15 is a halotolerant bacterium (able to withstand NaCl concentrations as high as 30%) isolated from the wheat rhizoplane in the Yellow River delta. A qualitative and quantitative investigation of...

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Published in:BioMed research international 2022-05, Vol.2022, p.9506227-16
Main Authors: Ji, Chao, Tian, Huimei, Wang, Xiaohui, Song, Xin, Ju, Ruicheng, Li, Huying, Gao, Qixiong, Li, Chaohui, Zhang, Pengcheng, Li, Jintai, Hao, Liping, Wang, Changdong, Zhou, Yanyan, Xu, Ruiping, Liu, Yue, Du, Jianfeng, Liu, Xunli
Format: Article
Language:English
Subjects:
Agricultural research
Ammonia
Antibiotics
Bacillus subtilis
Bacillus subtilis - genetics
Bacteria
Colonization
Dilution
Electrical conductivity
Electrical resistivity
Environmental aspects
Fertilizers
Glycerol
Hardiness
Inoculation
Methods
Microorganisms
Morphology
Nitrogen fixation
Nitrogenation
Oxidative stress
Physiological aspects
Plant growth
Plant growth promoting substances
Plant Roots - microbiology
Plants
Potassium
Production processes
Rhizoplane
Rhizosphere
Salinity
Salinity tolerance
Salt
Salt stress (Botany)
Salt Tolerance - genetics
Salts
Scanning electron microscopy
Seeds
Sodium chloride
Sodium Chloride - pharmacology
Soil inoculation
Strain
Stress
Triticum - genetics
Triticum aestivum
VOCs
Volatile organic compounds
Wheat
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Summary:Certain plant growth-promoting bacteria (PGPB) reduce salt stress damage in plants. Bacillus subtilis HG-15 is a halotolerant bacterium (able to withstand NaCl concentrations as high as 30%) isolated from the wheat rhizoplane in the Yellow River delta. A qualitative and quantitative investigation of the plant growth-promoting characteristics of this strain confirmed nitrogen fixation, potassium dissolution, ammonia, plant hormone, ACC deaminase, and proline production abilities. B. subtilis HG-15 colonization of wheat roots, stems, and leaves was examined via scanning electron microscopy, rep-PCR, and double antibiotic screening. After inoculation with the B. subtilis HG-15 strain, the pH (1.08–2.69%), electrical conductivity (3.17–11.48%), and Na+ (12.98–15.55%) concentrations of rhizosphere soil significantly decreased (p
ISSN:2314-6133
2314-6141
DOI:10.1155/2022/9506227