Bacillus subtilis CBR05 for Tomato (Solanum lycopersicum) Fruits in South Korea as a Novel Plant Probiotic Bacterium (PPB): Implications from Total Phenolics, Flavonoids, and Carotenoids Content for Fruit Quality
2019
Murugesan Chandrasekaran | Se Chul Chun | Jae Wook Oh | Manivannan Paramasivan | Ramesh Kumar Saini | Jesudoss Joseph Sahayarayan
Plant growth-promoting rhizobacteria (PGPR) are naturally occurring soil biota which benefit plants by improving plant productivity and immunity. The aim of the present work was to evaluate the effect of the inoculation of PGPR strain, Bacillus subtilis CBR05 on the quality of tomato fruits produced under greenhouse conditions. Results were compared with mock-inoculated control and market sample. We found a significant increase in total phenol and flavonoid contents of tomato fruits in PGPR strain B. subtilis CBR05 inoculated plants compared to those of mock-inoculated control and market sample. Moreover, B. subtilis CBR05 inoculation stimulated antioxidant activities and levels of carotenoid (&beta: carotene and lycopene) content in plants. In addition, the inoculation of the strain B. subtilis CBR05 produced the highest content of lycopene (21.08 &mu:g/g FW) in tomato fruits as compared to mock-inoculated plants. Our results show that the PGPR strain B. subtilis CBR05 is a versatile soil bacterium that enhances tomato production by elevating antioxidant activities and carotenoid (&beta: carotene and lycopene) levels in fruit.
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