Sustainable Agriculture Reviews 41 by Unknown

Author:Unknown
Language: eng
Format: epub
ISBN: 9783030339968
Publisher: Springer International Publishing

Marchiol et al. (2016) investigated the uptake and translocation of TiO2 NPs in barley. Plants raised from seeds treated with TiO2 NPs experienced a prolonged growth cycle as compared to untreated plants. At physiological maturity, plants treated with TiO2 NPs at 1000 mg kg−1 showed improved photosynthetic rate, stomatal conductance, and transpiration. Net photosynthetic rate and chlorophyll content increased significantly in rice plants treated with TiO2 NPs (Ji et al. 2017). Genome-wide transcriptome analysis in leaves of Arabidopsis thaliana treated with TiO2 NPs revealed that the NPs induced genes related to photosynthetic metabolism (Tumburu et al. 2017). Improved photosynthetic rate and other physiological processes due to TiO2 NPs could be a function of increased light absorption by chloroplasts through upregulation of genes related to light-harvesting complex II (Ze et al. 2011). Foliar application of TiO2 NPs boosted total phenolic content and biosynthesis of leaf flavanols in Vitis vinifera (Korosi et al. 2019).

TiO2 NPs have been associated with reducing metal toxicity in plants. Deleterious effects of Cd in soybean were overcome by application of TiO2 NPs (Singh and Lee 2016), and treated plants had improved photosynthetic rate and growth parameters. This suggests that TiO2 NPs could be used in phytoremediation as it increases uptake of Cd and decreases their toxicity to soybean.

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