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Plant Growth Promoting Endophytic Serratia sp. ZoB14 Protecting Ginger from Fungal Pathogens

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Proceedings of the National Academy of Sciences, India Section B: Biological Sciences Aims and scope Submit manuscript

Abstract

Soft rot caused by Pythium sp. is a major challenge to the cultivation of Zingiber officinale Rosc. (Ginger). In the present study, endophytic Serratia sp. ZoB14 isolated from ginger rhizome was found to have inhibitory effect towards Pythium myriotylum and also against other pathogens. This was confirmed by dual culture and scanning electron microscopic analysis. Further, ZoB14 was identified to have the presence of aminopyrrolnitrin oxidase gene involved in the biosynthesis of pyrrolnitrin. The rhizome bacterization with ZoB14 has revealed its protective effect to ginger from Pythium infection. In addition, the organism was observed to have the presence of an array of plant growth promoting traits with in vivo growth enhancement effect on Vigna unguiculata seedlings. Even though Serratia species have previously been reported for antifungal properties, its plant growth supportive features and isolation from rhizome of ginger make the study highly significant.

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Acknowledgements

This work was funded by The Kerala State Council for Science, Technology and Environment for the KSCSTE—Fellowship (Council Order No. 010—40/FSHP/2010CSTE), Kerala State Council for Science, Technology and Environment-Science Research Scheme (274/2015, KSCSTE Dated 6 July 2015) and Kerala State Council for Science, Technology and Environment-Selective Augmentation of Research & Development (1223/2014/KSCSTE Dated 8/1/2014).

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  1. Rohini Sabu and R. Aswani have contributed equally to this work.

Authors and Affiliations

  1. School of Biosciences, Mahatma Gandhi University, PD Hills (PO), Kottayam, Kerala, 686 560, India

    Rohini Sabu, R. Aswani, P. Jishma, B. Jasim, Jyothis Mathew & E. K. Radhakrishnan

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  1. Rohini Sabu
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Correspondence to E. K. Radhakrishnan.

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Additional information

Significance of the study Endophytic Serrati a sp. ZoB14 isolated in the study was identified to have both biocontrol and plant growth promoting features. This indicates its promises to develop into bioinoculant for environment friendly agricultural practices.

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Sabu, R., Aswani, R., Jishma, P. et al. Plant Growth Promoting Endophytic Serratia sp. ZoB14 Protecting Ginger from Fungal Pathogens. Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci. 89, 213–220 (2019). https://doi.org/10.1007/s40011-017-0936-y

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