Role of some nanomaterials in management of nutrients stress in crop plants

Ricardo Tighe-Neira, Gonzalo Recio, Zed Rengel, Claudio Inostroza-Blancheteau, Marjorie Reyes-Díaz

Research output: Chapter in Book/Conference paperChapterpeer-review

Abstract

Zinc, iron, and silicon nanoparticles (NPs) are widely used in plant system. As their mineral base is a relevant constituent of the earth's crust, they are are commonly found in nature; indeed, Zn and Fe are considered essential nutrients. The Zn, Fe, and Si NPs effects on the plant are known, but its role in a nutrient acquisition under salinity and drought stress is less known. Thus, this chapter aimed to analyze critically the role of Zn, Fe, and Si NPs on crop plant nutrient acquisition under salinity and drought stress to comprehend their physiological and biochemical regulations. The specific information is scarce; however, we found tangential studies in several crop plants like cereals, legumes, oilseeds, and vegetables, where the NPs could play a relevant role in plant nutrition under abiotic stress allowing alleviate it and give a better plant response. Most of the authors suggest that smaller NPs increase the efficiency to counter the adverse effects. Moreover, direct exposition of NPs to soil or via fertilizer was preferable rather than foliar spraying methods. Zinc, iron, and silicon NPs affect the nutrient acquisition, trending to increase some macronutrient and micronutrients concentration in plant tissue; also, the relevant cations (K, Ca, and Mg) are increased, and Na is reduced, which is traduced in an increased of (K, Ca, and Mg)/Na ratio under salinity. The mechanisms underlying are not fully elucidated because several factors interact as NPs size and doses, and its electrical and chemical properties, mainly when are soil-applied. More studies are necessary to discover the primary mechanisms involved in the effect of NPs on nutrient stress, which could explain some observations and validate its use on the productive scale for contributing to satisfying the increasing food needs of the human population.
Original languageEnglish
Title of host publicationEngineered Nanomaterials for Sustainable Agricultural Production, Soil Improvement and Stress Management
EditorsAzamal Husen
Place of PublicationUK
PublisherAcademic Press
Chapter11
Pages241-255
Number of pages15
ISBN (Electronic)9780323919333
ISBN (Print)9780323914116
DOIs
Publication statusPublished - 1 Jan 2022

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