Applications of nanomaterials in agricultural production and crop protection: A review

Khot, Lav R.; Sankaran, Sindhuja; Maja, Joe Mari; Ehsani, Reza; Schuster, Edmund‐Philipp

doi:10.1016/j.cropro.2012.01.007

Cited by 1,098 publications

(500 citation statements)

References 71 publications

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“…Therefore, study results revealed that germination is enhanced by TiO 2 nanoparticles than ZnO nanoparticles. This enhancement of germination by TiO 2 nanoparticles over ZnO nanoparticles is probably due to generation of reactive anions which directly or indirectly helps to accumulate water and increase the rate of oxygen uptake which is required for fast germination (Khot et al 2012). Another study conducted by Zheng et al (2005) highlighted that TiO 2 nanoparticles have beneficial effect on germination of spinach seed and seedling growth.…”

Section: Germination In Cicer Arietinummentioning

confidence: 99%

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Hajra

Mondal

2017

Energ. Ecol. Environ.

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With the development of nanotechnology, metal oxide nanoparticles have been applied in many industries, increasing their potential exposure level in the environment, yet their environmental safety remains poorly evaluated. Present work demonstrated the effects of ZnO and TiO 2 nanoparticles on the germination, morphoanatomical attributes and biochemistry of Cicer arietinum. The nanoparticles are used in three doses, i.e., 100, 500 and 1000 ppm along with control and each dose has three replicates. Results demonstrated that ZnO nanoparticles did not aid in the germination of seed, whereas TiO 2 nanoparticles showed positive impact on germination at 48-h observation. But at 72-h observation both the nanoparticle-treated and control seeds showed 100% germination. Morphological parameters revealed that ZnO nanoparticles have drastic negative impact on both root and shoot length, root and shoot fresh and dry biomass. On the other hand, the status of chlorophyll is almost opposite, i.e., ZnO nanoparticle-treated plants showed higher pigment content than TiO 2 nanoparticle-treated plants. From the statistical point of view, it is revealed that ZnO nanoparticle-treated plant showed significantly different results than that of TiO 2 nanoparticle-treated plants in Chl 'a' (p \ 0.001), Chl 'b' (p \ 0.001), total Chl (p \ 0.001) and carotenoid (p \ 0.001) content. Therefore, from these observations it can be concluded that ZnO nanoparticles showed positive effect on plant pigment content.Transverse sections of root clearly revealed the formation of vascular bundle, and parenchyma tissue is hampered in all the ZnO nanoparticle-treated plants. However, wellformed vascular bundles and other tissue systems are clearly visible for TiO 2 nanoparticle-treated roots. This work shows a combination of both positive and negative effects of ZnO and TiO 2 nanoparticles on a dicot plant. Present observation is very much important to understand the morphological, biochemical and anatomical alteration of plant system under the influence of ZnO and TiO 2 nanoparticles. This will help to utilize the nanoparticles in a managed way where nanoparticles with harmful effect on biological systems can be used in such a way to reduce their exposure to environment, and on the other hand, nanoparticles showing positive effect on biological systems may be used as growth enhancers or biofertilizers. Moreover, these results further strengthen our understanding of environmental safety information with respect to metal oxide nanoparticle.

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Section: Germination In Cicer Arietinummentioning

confidence: 99%

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Hajra

Mondal

2017

Energ. Ecol. Environ.

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“…TiO 2 -NPs enhance the seed germination percentage especially at low concentrations due to having antimicrobial and antifungal properties and encourage capsule penetration to the seed coat for intake of water, oxygen and fertilizer needed for activation of the embryo and then quick germination (Khot et al 2012). They can affect the seed germination percentage and seedling growth depending on the chemical compound and the size and shape of the particles, concentration, their mechanism of uptake and/or plant species (Ruffini, Cremonini 2009).…”

Section: Discussionmentioning

confidence: 99%

Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed

Goodarzi¹,

Noor²,

Ahmadloo³

2017

J. For. Sci.

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Goodarzi G.R., Payam Noor V., Ahmadloo F. (2017): Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed. J. For. Sci., 63: 408-416.We examined the effects of nanoparticles (NPs) of TiO 2 and ZnO at 0.5, 1, 2 or 3% concentrations for 10, 20, and 30 min in stratified seeds of Prunus mahaleb Linnaeus. Then, seedlings produced were irrigated to field capacity with NP solutions at control, 1, 5, and 10% concentration for 7 months in the greenhouse conditions. Treating seeds at 1% concentrations of TiO 2 -NPs for 20 min resulted in the highest germination percentage (65%) and at concentrations of 3% for 30 min it showed the lowest germination percentage (13%). The highest total seedling height was obtained after exposure of seeds to 0.5% TiO 2 -NPs for 10 min. Irrigation of seedlings with TiO 2 -NPs at the concentration of 1% seems to be a suitable method how to increase their total height, survival, and total dry weight. A decrease in the relative water content and an increase in proline were observed in response to the application of high levels of NPs.

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“…Positive effects on seed germination were reported mainly in TiO 2 and industrial-grade CNTs, particularly on seeds with inherently low germination (Zheng et al, 2005;Miralles et al, 2012a;Feizi et al, 2013). Thus, reactive oxygen species (ROS) induced by nano-TiO 2 may have enhanced seed stress resistance and facilitated capsule penetration for water and oxygen intake that enabled more rapid germination (Khot et al, 2012). For industrial-grade CNTs, catalyst impurities, including Fe and Al 2 O 3 , can approach and exceed percent levels and as such, these materials rather than CNTs could enhance seed vigor by similar hormesis.…”

Section: General Toxicity Tests On Seeds/seedlingsmentioning

confidence: 99%

Interactions between engineered nanomaterials and agricultural crops: implications for food safety

Deng

White

Xing

2014

J. Zhejiang Univ. Sci. A

117

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Engineered nanomaterials (ENMs) are being discharged into the environment and to agricultural fields, with unknown impacts on crop species. In this paper, we review the literature on ENMs uptake, translocation/distribution, and generational transmission in various crop species, as well as potential material trophic transfer. Previous studies reveal that ENM-exposed crops exhibit adaptive processes in response to stress, including endocytosis/endosome activities, production of antioxidant enzymes, regulation of genes related to cell division/extension and membrane transport. Some agronomic traits of crops are compromised during the adaption response, including photosynthesis, fruit yields, nutritional quality and nitrogen fixation. Cultivation of crops in ENMs-contaminated environments has unknown implications for food safety and quality. Notably, mechanisms underlying ENMs phytotoxicity and bioavailability are unclear. Additional investigations focused on developing novel techniques for in vivo identification/characterization of ENMs are critically needed. Given the abundance of uncertainty in the literature, it is clear that more research is urgently needed in the area of ENMs-crop interactions; only then can one accurately assess exposure, risk, and overall implications for food safety and also enable guidance development for the sustainable implementation of nanotechnology in agriculture and food production/manufacturing.

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Applications of nanomaterials in agricultural production and crop protection: A review

Cited by 1,098 publications

References 71 publications

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Effects of ZnO and TiO2 nanoparticles on germination, biochemical and morphoanatomical attributes of Cicer arietinum L

Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seed

Interactions between engineered nanomaterials and agricultural crops: implications for food safety

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