Isolation and characterization of plant growth promoting endophytic bacteria from the rhizome of Zingiber officinale

Abstract

Endophytes, by residing within the specific chemical environment of host plants, form unique group of microorganisms. Microbially unexplored medicinal plants can have diverse and potential microbial association. The rhizome of ginger is very remarkable because of its metabolite richness, but the physiological processes in these tissues and the functional role of associated microorganisms remain totally unexplored. Through the current study, the presence of four different endophytic bacterial strains were identified from ginger rhizome. Among the various isolates, ZoB2 which is identified as Pseudomonas sp. was found to have the ability to produce IAA, ACC deaminase and siderophore. By considering these plant growth promoting properties, ZoB5 can expect to have considerable effect on the growth of ginger.

Antibacterial secondary metabolites from an endophytic fungus, Arthrinium sp. MFLUCC16-1053 isolated from Zingiber cassumunar

“…The plant oil from the rhizome extracts has anti-inflammatory and anti-microbial activities (Pongprayoon et al 1997; Bhuiyan et al 2008; Sukatta et al 2009). Recently, several ascomycetous endophytic fungal species were detected in the rhizomes of healthy Zingiber plants (Ginting et al 2013; Jasim et al 2014; Krishnapura and Belur 2016). These results suggest that the number and diversity of endophytic fungi depend on the geographic location rather the host plant species.…”

Characterization, identification and antibiogram studies of endophytic bacteria from cowpea [Vigna unguiculata (L.) Walp]

“…Bacterial genus Staphylococcus, were found previously as endophyte in various agronomic crops (Costa et al, 2012;Jasim et al, 2013); Staphylococcus caprae and Staphylococcus saprophyticus were found as endophyte in Phaseolus vulgaris (Tille, 2017). The genera isolated in the present study that have been previously reported as endophytes are Staphylococcus caprae and Staphylococcus saprophyticus, where Staphylococcus intermedius is found to be new in our research.…”

The endophytic bacteria producing IAA (Indole Acetic Acid) in Arachis hypogaea

“…It has been reported that endophytic bacteria produce significant IAA, in B. cereus (Rana et al 2011. ) and P. putida (Jasim et al 2013). The production rate was found to be maximal in the case of P. putida (ECL5) and the minimum in C. michiganensis (ECL6) in the presence of tryptophan.…”