Abstract
Ginger (Zingiber officinale) is cultivated commercially in most parts of the world especially in India for its culinary and medicinal applications. One of the major challenges that limit the yield of ginger is rhizome rot disease caused by organisms including Pythium myriotylum. A feasible ecofriendly method is yet to be devised to prevent the plant from this threatening disease. Recent studies on plant microbiome show the possibility of having endophytic organisms with plant protective characteristics associated with the plants. Because of the uniquely evolved underground nature of the ginger rhizome and its peculiar survival in soil for a long time, many interesting endophytic microbes with plant protective characters can be well expected from it. In the current study, previously isolated endophytic Pseudomonas aeruginosa from ginger was investigated in detail for its effect on Pythium myriotylum. The rhizome protective effect of the organism was also studied by co-inoculation studies, which confirmed that Pseudomonas aeruginosa has very potent inhibitory effect on Pythium myriotylum. On further studies, the active antifungal compound was identified as phenazine 1-carboxylic acid.
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Acknowledgments
This study was supported by Department of Biotechnology (DBT), Government of India under DBT-RGYI support scheme, Department of Science and Technology, Government of India under DST-PURSE program and Kerala State Council for Science, Technology and Environment, Government of Kerala.
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Jasim, B., Anisha, C., Rohini, S. et al. Phenazine carboxylic acid production and rhizome protective effect of endophytic Pseudomonas aeruginosa isolated from Zingiber officinale . World J Microbiol Biotechnol 30, 1649–1654 (2014). https://doi.org/10.1007/s11274-013-1582-z
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DOI: https://doi.org/10.1007/s11274-013-1582-z