Estimation of bioactive potential of culturable bacterial endophytes from Coleus

Abstract

Endophytic microflora is source of several bioactive compounds. Endophytes isolated from Coleus species are yet to be fully explored for their bioactive potential. In this study, bacterial endophytes were isolated from three different species of Coleus. Isolated endophytes were characterized by using Gram staining and by sequencing 16S rRNA region. Further, solvents with different polarities were used to prepare extracts which were used for assessment of different bio-activities including in vitro cytotoxicity, anti-microbial and anti-oxidant activities. Also, the pure endophytic bacterial cultures were evaluated for their antiphytopathogen potential as well as indole-3-acetic acid (IAA) and protease production. Advanced studies on the endophytes with promising activities may lead to the isolation of novel natural products for drugs as well as in industrial and agricultural applications.