Cu-chitosan nanoparticle boost defense responses and plant growth in maize (Zea mays L.)
Open accessAbstract
In agriculture, search for biopolymer derived materials are in high demand to replace the synthetic agrochemicals. In the present investigation, the efficacy of Cu-chitosan nanoparticles (NPs) to boost defense responses against Curvularia leaf spot (CLS) disease of maize and plant growth promotry activity were evaluated. Cu-chitosan NPs treated plants showed significant defense response through higher activities of antioxidant (superoxide dismutase and peroxidase) and defense enzymes (polyphenol oxidase and phenylalanine ammonia-lyase). Significant control of CLS disease of maize was recorded at 0.04 to 0.16% of Cu-chitosan NPs treatments in pot and 0.12 to 0.16% of NPs treatments in field condition. Further, NPs treatments exhibited growth promotry effect in terms of plant height, stem diameter, root length, root number and chlorophyll content in pot experiments. In field experiment, plant height, ear length, ear weight/plot, grain yield/plot and 100 grain weight were enhanced in NPs treatments. Disease control and enhancement of plant growth was further enlightened through Cu release profile of Cu-chitosan NPs. This is an important development in agriculture nanomaterial research where biodegradable Cu-chitosan NPs are better compatible with biological control as NPs "mimic" the natural elicitation of the plant defense and antioxidant system for disease protection and sustainable growth.
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Most studies using chitosan report an increase in chlorophyll content.
“This is surprising as most studies using chitosan report an increase in chlorophyll content [29,30].”
From Ecdysteroid Content and Therapeutic Activity in Elicited Spinach Accessions (2020) · cites this paper as [29]
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Ecdysteroid Content and Therapeutic Activity in Elicited Spinach Accessions
Gorelick, J., Iraqi, R. H., & Bernstein, N. (2020) · Plants · doi:10.3390/plants9060727 · Cited by 19 · see citing works
- Authors
- Choudhary, R. C., Kumaraswamy, R. V., Kumari, S., Sharma, S. S., Pal, A., Raliya, R., Biswas, P., & Saharan, V.
- Affiliations
- Maharana Pratap University of Agriculture and Technology (IN)
- Chaudhary Charan Singh Haryana Agricultural University (IN)
- Washington University in St. Louis (US)
- ORCID
- Venue
- Scientific Reports
- Published
- 2017-08-29
- Volume
- 7
- Issue
- 1
- Pages
- 9754-9754
- ISSN
- 2045-2322 (ISSN-L)
- PMC
- PMC5575333
- OpenAlex
- W2747098891
- Cited by
- 367
- References
- 52
- Citations by year
- 2026: 34 · 2025: 42 · 2024: 53 · 2023: 44 · 2022: 67 · 2021: 42 · 2020: 38 · 2019: 27 · 2018: 19 · 2017: 1
- FWCI
- 10.46
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Scientific Reports (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- Washington University in St. Louis
- Department of Biotechnology, Ministry of Science and Technology, India (DBT/2015RCOA-2012/372, 2015RCOA-2012/372)
- Department of Science and Technology, Ministry of Science and Technology, India (IF140505)
- Topics
- Physical Sciences › Engineering › Biomedical Engineering › Polymer-Based Agricultural Enhancements
- Life Sciences › Agricultural and Biological Sciences › Plant Science › Plant Growth Enhancement Techniques
- Physical Sciences › Materials Science › Materials Chemistry › Nanoparticles: synthesis and applications
- Keywords
- maize, Curvularia leaf spot, plant disease resistance, plant defense response, antioxidant enzymes, polyphenol oxidase, phenylalanine ammonia-lyase, superoxide dismutase, peroxidase, plant growth promotion, grain yield, copper release, biodegradable nanoparticles, biological control
- MeSH terms
- Copper, Zea mays, Plant Diseases, Plant Growth Regulators, Chitosan, Nanoparticles, Plant Immunity
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