Application of Endophytic Bacteria in Plant Growth Enhancement

Author(s): *Palaniswamy. R and Dhanyasri. S

Abstract: Endophytic bacteria have been found in virtually every plant studied, where they colonize the internal tissues of their host plant and can form a range of different relationships including symbiotic, mutualistic, commensalistic and trophobiotic. Most endophytes appear to originate from the rhizosphere or phyllo sphere; however, some may be transmitted through the seed. Endophytic bacteria can promote plant growth and yield and can act as biocontrol agents. Endophytes can also be beneficial to their host by producing a range of natural products that could be harnessed for potential use in medicine, agriculture or industry. In the present study the leaves and roots of medicinal plants were considered for the isolation of endophytic bacteria, namely, Catharathus roseus, Murraya koenigii and Nerium oleander. These bacterial isolates were tested for their ability to promote plant growth which was checked in Vigna radiata seeds and the potential of these isolates to increase the fertility of the soil indirectly was determined.

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