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Colonization of Plant Growth-promoting Microbes in Coconut Seedlings

Author: Shanmugapriya D., Roy Stephen, K.N. Anith, Viji M.M. and Prathapan K.

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Abstract

Button shedding is one of the main determinants of coconut yield which can be reduced by the application of plant growth regulators such as auxins, and gibberellins. Plant growth promoting microorganisms enhance plant growth by improving nutrient availability, regulation of phytohormones and increasing tolerance to biotic and abiotic stresses. The research was conducted to check the colonization of plant growth-promoting fungal endophyte Piriformospora indica and the endophytic bacterium Rhizobium radiobacter in the root of coconut seedlings. The roots were evaluated repeatedly to check the colonization of P. indica by grid intersect method followed by lactophenol-trypan blue staining. The results revealed that the chlamydospores of P. indica were seen colonized in the cortex region of the root hairs of the coconut seedlings which is reported for the first time whereas Rhizobium radiobacter was not found colonized in the roots.

Keywords

Plant growth promoting microorganisms, Button shedding, Coconut, Colonization, Piriformospora indica

Conclusion

In conclusion, this research delivers evidence of the symbiotic relationship between P. indica and coconut. Piriformospora indica has a wide variety of uses in many crops under different environmental conditions. Thus P. indica exhibits its versatility for colonizing various plant species with direct alteration of auxin signaling. The role of beneficial microbes on auxin production in coconut and the effect of P. indica in the coconut crop has to be studied in the future. These beneficial effects recommend the significant potential for the effective use of P. indica for future microbial bio-fertilizer application in Coconut to enhance the growth promotion and stronger resistance to button shedding.

References

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How to cite this article

Shanmugapriya D., Roy Stephen, K.N. Anith, Viji M.M. and Prathapan K. (2022). Colonization of Plant Growth-promoting Microbes in Coconut Seedlings. Biological Forum – An International Journal, 14(4): 586-589.