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
Abstract :
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.
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.
