Evaluation of Chitosan Nanoparticles and Harpin Loaded Chitosan Nanoparticles on Elicitation of Defense Markers in Gerbera Induced Defense Markers in Gerbera using Nanoparticles


Authors : Ebenezer Madam; Praveen Mamidala

Volume/Issue : Volume 7 - 2022, Issue 9 - September

Google Scholar : https://bit.ly/3IIfn9N

Scribd : https://bit.ly/3eDFsh1

DOI : https://doi.org/10.5281/zenodo.7212638

Gerbera jamesonii Bolus ex Hooker F., an important ornamental plant which has global demand is facing serious consequences due to protected cultivation as repeated fertigation combined with biotic stress is greatly impacting its productivity. However, little to no work was initiated so far to overcome salt sensitive issues and developing biotic resistance in Gerbera cultivars. In the current study, we have developed chitosan nanoparticles and harpin loaded chitosan nanoparticles to improve the tolerance levels of Gerbera (yellow cultivar) towards various biotic stress conditions. With the topical application of CSNPs and CSHNPs on cut-flowers of Gerbera, a significant increase in elicitation of defense markers such as polyphenol oxidase (PPO), peroxidase (POD), and phenolic compounds was observed. With the increased levels of defense markers, Gerbera (yellow cultivar) cut-flowers have shown increased shelf life. The outcome of this study has not only benefits Gerbera, but can also be extended to several other ornamental plants which are facing fertigation issues and biotic stress due to closed environment in polyhouse grown plants.

Keywords : Chitosan, Chitosan Nanoparticles, Harpin, Harpin Loaded Chitosan Nanoparticles, Gerbera, Defense Markers.

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