Gold-nanoparticle induced enhancement in growth and seed yield of Brassica juncea

Arora, Sandeep; Sharma, Prashant; Kumar, Sumit; Nayan, Rajeev; Khanna, P. K.; Zaidi, M. G. H.

doi:10.1007/s10725-011-9649-z

Cited by 388 publications

(168 citation statements)

References 23 publications

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“…78 In addition to negative effects on chlorophyll biosynthesis, other NPs such as Au, TiO 2 , and ZnO were shown to enhance the chlorophyll content in mustard (Brassica juncea), cucumber, and clusterbean (Cyamopsis tetragonoloba L.), respectively. 59,79,80 Lipid peroxidation is another important parameter that is indicative of cell membrane integrity. ROS generation is known to be a primary factor that results in cell membrane damage through lipid peroxidation, leading to ion leakage and potential cell death.…”

Section: Biotransformation Of Metal-based Nps Inside Plantsmentioning

confidence: 99%

Metal-Based Nanotoxicity and Detoxification Pathways in Higher Plants

White

Dhankher

et al. 2015

Environ. Sci. Technol.

369

183

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The potential risks from metal-based nanoparticles (NPs) in the environment have increased with the rapidly rising demand for and use of nanoenabled consumer products. Plant's central roles in ecosystem function and food chain integrity ensure intimate contact with water and soil systems, both of which are considered sinks for NPs accumulation. In this review, we document phytotoxicity caused by metal-based NPs exposure at physiological, biochemical, and molecular levels. Although the exact mechanisms of plant defense against nanotoxicity are unclear, several relevant studies have been recently published. Possible detoxification pathways that might enable plant resistance to oxidative stress and facilitate NPs detoxification are reviewed herein. Given the importance of understanding the effects and implications of metal-based NPs on plants, future research should focus on the following: (1) addressing key knowledge gaps in understanding molecular and biochemical responses of plants to NPs stress through global transcriptome, proteome, and metablome assays; (2) designing long-term experiments under field conditions at realistic exposure concentrations to investigate the impact of metal-based NPs on edible crops and the resulting implications to the food chain and to human health; and (3) establishing an impact assessment to evaluate the effects of metal-based NPs on plants with regard to ecosystem structure and function.

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Section: Biotransformation Of Metal-based Nps Inside Plantsmentioning

confidence: 99%

Metal-Based Nanotoxicity and Detoxification Pathways in Higher Plants

White

Dhankher

et al. 2015

Environ. Sci. Technol.

369

183

View full text Add to dashboard Cite

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“…In addition, a marked increase was observed in the chlorophyll index, number of nodules, and crop yield. Arora et al (2012) reported that foliar spray of gold on Brassica juncea plant in field experiments showed positive effect as it resulted in increased plant height, stem diameter, number of branches, number of pods, and seed yield. Interestingly, gold nanoparticles also improved the redox status of treated plants.…”

Section: Nano-fertilizers and Plant Growthmentioning

confidence: 99%

Nano-fertilizers and Their Smart Delivery System

Solanki¹,

Bhargava²,

Chhipa³

et al. 2015

Nanotechnologies in Food and Agriculture

276

126

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Outburst of world population in the past decade has forced the agricultural sector to increase crop productivity to satisfy the needs of billions of people especially in developing countries. Widespread existence of nutrient deficiency in soils has resulted in great economic loss for farmers and significant decreases in nutritional quality and overall quantity of grains for human beings and livestock. Use of large-scale application of chemical fertilizers to increase the crop productivity is not a suitable option for long run because the chemical fertilizers are considered as double-edged swords, which on the one hand increase the crop production but on the other hand disturb the soil mineral balance and decrease soil fertility. Large-scale application of chemical fertilizers results in an irreparable damage to the soil structure, mineral cycles, soil microbial flora, plants, and even more on the food chains across ecosystems leading to heritable mutations in future generations of consumers.In recent years, nanotechnology has extended its relevance in plant science and agriculture. Advancement in nanotechnology has improved ways for large-scale production of nanoparticles of physiologically important metals, which are now used to improve fertilizer formulations for increased uptake in plant cells and by minimizing nutrient loss. Nanoparticles have high surface area, sorption capacity, and controlled-release kinetics to targeted sites making them "smart delivery system." Nanostructured fertilizers can increase the nutrient use efficiency through mechanisms such as targeted delivery, slow or controlled release. They could precisely release their active ingredients in responding to environmental triggers and biological demands. In recent lab scale investigations, it has been reported that nano-fertilizers can improve crop productivity by enhancing the rate of seed germination, seedling growth, photosynthetic activity, nitrogen metabolism, and carbohydrate and protein synthesis. However, as being an infant technology, the ethical and safety issues surrounding the use of nanoparticles in plant productivity are limitless and must be very carefully evaluated before adapting the use of the so-called nano-fertilizers in agricultural fields.

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“…The Au nanoparticles located in the nucleus and the applications of defamation suggested at both species are regarded as hyperaccumulators of Au nanoparticles [145–147]. Additionally, it is documented that Au nanoparticle are transported inside the cells through plasmodesmata.…”

Section: Engineered Nanomaterials: On Plant Growthmentioning

confidence: 99%

Effects of Engineered Nanomaterials on Plants Growth: An Overview

Aslani

Bagheri

Julkapli

et al. 2014

The Scientific World Journal

333

113

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Rapid development and wide applications of nanotechnology brought about a significant increment on the number of engineered nanomaterials (ENs) inevitably entering our living system. Plants comprise of a very important living component of the terrestrial ecosystem. Studies on the influence of engineered nanomaterials (carbon and metal/metal oxides based) on plant growth indicated that in the excess content, engineered nanomaterials influences seed germination. It assessed the shoot-to-root ratio and the growth of the seedlings. From the toxicological studies to date, certain types of engineered nanomaterials can be toxic once they are not bound to a substrate or if they are freely circulating in living systems. It is assumed that the different types of engineered nanomaterials affect the different routes, behavior, and the capability of the plants. Furthermore, different, or even opposing conclusions, have been drawn from most studies on the interactions between engineered nanomaterials with plants. Therefore, this paper comprehensively reviews the studies on the different types of engineered nanomaterials and their interactions with different plant species, including the phytotoxicity, uptakes, and translocation of engineered nanomaterials by the plant at the whole plant and cellular level.

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Gold-nanoparticle induced enhancement in growth and seed yield of Brassica juncea

Cited by 388 publications

References 23 publications

Metal-Based Nanotoxicity and Detoxification Pathways in Higher Plants

Metal-Based Nanotoxicity and Detoxification Pathways in Higher Plants

Nano-fertilizers and Their Smart Delivery System

Effects of Engineered Nanomaterials on Plants Growth: An Overview

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