Irradiated chitosan (ICH): an alternative tool to increase essential oil content in lemongrass (Cymbopogon flexuosus)
In: Digital.CSIC. Repositorio Institucional del CSIC instname; (2022)
Online
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Key message: Irradiated chitosan boosts a myriad of physiological processes, including photosynthetic efficiencies, gas-exchange, N-metabolism, osmoprotection, antioxidant metabolism, and EO biosynthesis in lemongrass and thus could be an alternative for crop enhancement. Abstract: Chitosan is a poly-(d)-glucosamine that has multiple biomedical, horticultural, or agricultural applications. However, the modifications of its physicochemical properties such as size, density, or surface area by controlled irradiation have started to be explored by biotechnological companies as it seems to improve its beneficial properties and extend its applications. Lemongrass (Cymbopogon flexuosus (Steud.) Wats) is an aromatic plant widely grown for its essential oil (EO). The present study had the goal to evaluate if the exogenous foliar application of irradiated chitosan (ICH) at different concentrations (0, 40, 80, 120, and 160 mg L) can exert beneficial effects in the 150-day-old lemongrass plants. The analyses of growth and photosynthetic parameters, leaf-nitrogen, and reactive oxygen species (ROS) metabolism, as well as the content of total EO including neral and citral, indicated that 120 mg L ICH concentration was most efficient to trigger a general activation of lemongrass metabolism characterised by an increase in dry biomass (37%), enzymatic antioxidant system, e.g., catalase (22%), peroxidase (18%) and superoxide dismutase activities (19%), and content of EO (40%) including neral (72%) and citral (26%), over the control. A similar eliciting pattern was observed in the chlorophyll content (25%), net photosynthetic rate (41%), and stomatal conductance (39%) over the control, with the foliar application of 120 mg L of ICH. Overall, the data indicate that ICH elicits lemongrass physiology and opens new possibilities for its biotechnological application on other plant species with agronomic potential.
g Research of MM and MMAK was supported by the Council of Science and Technology Uttar Pradesh, Lucknow, India [Grant: Role of Radiation-Processed Chitosan and Silicon Nanoparticles in Regulation of Geraniol Dehydrogenase for Citral Production of Lemongrass] The research of FJC is supported by European Regional Development Fund, co-financed grant from the Ministry of Economy and Competitiveness (PID2019-103924GB-I00), the Plan Andaluz de Investigación, Desarrollo e Innovación (PAIDI 2020) (P18-FR-1359), and Junta de Andalucía (group BIO192), Spain.
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Irradiated chitosan (ICH): an alternative tool to increase essential oil content in lemongrass (Cymbopogon flexuosus)
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Autor/in / Beteiligte Person: | Uddin, Moin ; M. Masroor A. Khan ; Corpas, Francisco J. ; Mukarram, Mohammad ; Council of Science and Technology UP (India) ; Commission, European ; Ministerio de Economía y Competitividad (España) ; Junta de Andalucía |
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Quelle: | Digital.CSIC. Repositorio Institucional del CSIC instname; (2022) |
Veröffentlichung: | Springer, 2022 |
Medientyp: | unknown |
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