Biological Synthesis of Ginsenoside Rd Using Paenibacillus horti sp. nov. Isolated from Vegetable Garden

Current Microbiology
Shahina Akter, Md Amdadul Huq

Abstract

A Gram-stain positive, aerobic, motile, rod-shaped, and ginsenoside Rd producing novel bacterial strain, designated as MAH-16T, was isolated from soil sample of a vegetable garden and was characterized by using a polyphasic approach. The colonies were beige color, smooth, circular, and 0.3-0.7 mm in diameter when grown on tryptone soya agar for 3 days. Strain MAH-16T can grow at 20-40 °C temperature, at pH 5.0-7.0 and at 0-1% NaCl. Cell growth occurs on nutrient agar, R2A agar, tryptone soya agar, and Luria-Bertani agar but not on MacConkey agar. The strain was positive for both catalase and oxidase test. The novel strain rapidly synthesized ginsenoside Rd from major ginsenoside Rb1. According to the 16S rRNA gene sequence comparisons, the isolate was identified as a member of the genus Paenibacillus and was most closely related to Paenibacillus barengoltzii SAFN-016T (97.1%), Paenibacillus faecis 656.84T (96.7%), and Paenibacillus konsidensis LBYT (96.2%). In DNA-DNA hybridization tests, the DNA relatedness between strain MAH-16T and its closest phylogenetic neighbor was below 45.0%. The genomic DNA G + C content of isolated strain was determined to be 52.0 mol% and the predominant isoprenoid quinine was menaquinone-7 (MK-7). ...Continue Reading

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Methods Mentioned

BETA
PCR

Software Mentioned

CLUSTAL
e server
EzTaxon
MEGA5

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