Salicylic acid functionalized chitosan nanoparticle: A sustainable biostimulant for plant

R. V. Kumaraswamy, Sarita Kumari, Ram Chandra Choudhary, S. S. Sharma, Ajay Pal, Ramesh Raliya, Pratim Biswas, Vinod Saharan

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

In this work, salicylic acid-chitosan nanoparticles (SA-CS NPs) are reported as a biostimulant for promoting plant defense and growth in maize. SA-CS NPs were characterised for colloidal size distribution, functional group, surface chemistry, chemical composition, crystal structure and morphology. Investigation discloses a method of SA-CS NPs synthesis, release profile of SA from SA-CS NPs, antifungal and seedling growth promoting activities. Findings unveil that SA-CS NPs expressed significant physiological-biochemical responses in vitro and in vivo. The responses were recorded as elevated antioxidant-defense enzyme activities, balancing reactive oxygen species (ROS), cell wall reinforcement by lignin deposition, disease control and plant growth in maize. In field, 59.4% control of post-flowering stalk rot (PFSR) disease and 57.8% yield enhancement was evident in SA-CS NPs application compared to SA treatment. The obtained results claim commercial potential of SA-CS NPs as a biostimulant for plant disease control and higher yield.

Original languageEnglish (US)
Pages (from-to)59-69
Number of pages11
JournalInternational Journal of Biological Macromolecules
Volume123
DOIs
StatePublished - Feb 15 2019
Externally publishedYes

Keywords

  • Biocompatible
  • Biostimulant
  • Chitosan
  • Nanoparticle
  • Plant growth
  • Plant immunity
  • Salicylic acid

ASJC Scopus subject areas

  • Structural Biology
  • Biochemistry
  • Molecular Biology
  • Economics and Econometrics
  • Energy(all)

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