Research Progress on the Effects of Engineered Nanomaterials on Higher Plant Growth

doi:10.11983/CBB22130

Abstract

Abstract: Due to their nanoscale effects and excellent physicochemical properties, engineering nanomaterials (ENMs) have been increasingly applied in various fields during the last decade. The biological effects of these ENMs on higher plants and the risk assessment of their ecological effects have become research hotspots. To comprehensively understand the effects of ENMs on higher plants in ecosystems, this paper reviews the effects of several ENMs (metal nanomaterials, metal oxide nanomaterials, carbon-based nanomaterials) on the growth of higher plants and their mechanisms. These ENMs could inhibit plant growth by reducing the seed germination rate, inducing relative reactive oxygen production, enhancing cell membrane permeability and directly damaging roots and can also promote plant growth by enhancing photosynthesis, increasing root activity, strengthening water absorption and enhancing plant metabolic enzyme activity. The influencing factors of ENMs on plant biological effects were further analyzed, including plant species, nanomaterial size and shape, nanomaterial surface characteristics, nanomaterial concentration and treatment time, and plant growth medium. Finally, based on the real soil environment, long-term and low-dose effects, and plant absorption and transportation, we propose the future research associated with the interaction between ENMs and higher plants, aiming to provide a reference for the efficient use of ENMs in agricultural production.

Key words: engineering nanomaterials, higher plant, positive effects, phytotoxic effect, influence factor

Chen Juanni, Zhu Yunsong, Song Kun, Ding Wei. Research Progress on the Effects of Engineered Nanomaterials on Higher Plant Growth[J]. Chinese Bulletin of Botany, 2023, 58(5): 813-830.

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URL: https://www.chinbullbotany.com/EN/10.11983/CBB22130

https://www.chinbullbotany.com/EN/Y2023/V58/I5/813

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References 134

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