Effect of silver nanoparticles on concentration of silver heavy element and growth indexes in cucumber (Cucumis sativus L. negeen)

Shams, Gholamabbas; Ranjbar, Morteza; Amiri, Aliasghar

doi:10.1007/s11051-013-1630-5

Cited by 62 publications

(29 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The physiological parameters of the bean seedlings correspond to their biometric indices, such as height and fresh weight of shoots (Tables 4 and 5). A stimulating effect of application of AgNPs at low concentrations (0.01-1 mg dm −3 ) on the growth, fresh weight and physiological activity of plants has been found in Arabidopsis and poplar, in cucumber, in Eruca sativa, and in rice [22,23,34,42]. A field experiment by Ashrafi et al [43] showed a positive effect of nanosilver application on such agronomic features of soybean as chlorophyll content, nitrogen content in seeds, and seed yield.…”

Section: Biometric and Physiological Parameters Of Seedlingsmentioning

confidence: 99%

Impact of Ag Nanoparticles on Seed Germination and Seedling Growth of Green Beans in Normal and Chill Temperatures

et al. 2020

View full text Add to dashboard Cite

The study analysed the effect of silver nanoparticles (AgNPs) on seed germination, field emergence and the physiological parameters of seedlings of two bean cultivars, ‘Bali’ and ‘Delfina’, under normal and chill temperatures. AgNPs solutions (0.25, 1.25 and 2.5 mg dm−3) were applied together with the microbial preparation Nitragina (containing Rhizobium leguminosarum bv. phaseoli) on seeds as a short-term pre-sowing treatment. Low concentrations of AgNPs (0.25, 1.25 mg dm−3) had an immediate beneficial effect, resulting in fast and uniform germination in laboratory and field conditions, as well as a positive effect in the later stages of seedling development, manifested as an increase in the average seedling height, fresh and dry weight and net photosynthesis. Particularly, favourable effects were noted in suboptimal temperature conditions, suggesting that AgNPs activate plant mechanisms of tolerance to environmental stress. The highest concentration tested of AgNPs was not particularly effective for the plants but had a strong antimicrobial effect, which was beneficial in period of seed germination, but at the later stage of plant development was unfavourable probably due to disruption of symbiosis between the bean seedlings and rhizobia.

show abstract

Section: Biometric and Physiological Parameters Of Seedlingsmentioning

confidence: 99%

Impact of Ag Nanoparticles on Seed Germination and Seedling Growth of Green Beans in Normal and Chill Temperatures

et al. 2020

View full text Add to dashboard Cite

show abstract

“…[ 47 ] Similarly, Ag NPs (50 nm) applied on the cucumber leaves were observed to increase the fruit weight and yield. [ 48 ] Additionally, Ag NPs can also help to increase plant resilience to various environmental pathogens as demonstrated by de La Torre‐Roche et al, who directly applied Ag NPs on foliage to improve tomato’s resistance to foliar pathogens. [ 49 ] Owing to the semipermeable nature of the plant cells walls, [ 50 ] these ENMs applications result in their uptake and translocation to various part of the plants, and their subsequent accumulation in the edible portions of these plants.…”

Section: Oral Exposure To Enms—is It Real and Relevant?mentioning

confidence: 99%

“…[ 51 ] In separate works investigating the accumulation and translocation of TiO 2 NPs, hydroponic studies demonstrated the translocation of the NPs in tomato, [ 52 ] wheat, and rapeseed. [ 53 ] Similarly, Ag NPs were noted to translocate, accumulate, and biopersist in the cucumber fruit tissue, [ 48 ] pear epidermis, [ 54 ] and the leaves of lettuce, [ 55 ] soybean, and rice plants. [ 56 ] Real life human exposures to ENMs through consumption of these agriproducts have yet to be determined.…”

Section: Oral Exposure To Enms—is It Real and Relevant?mentioning

confidence: 99%

Transformation of Nanomaterials and Its Implications in Gut Nanotoxicology

Setyawati

Zhao

2020

Small

View full text Add to dashboard Cite

Ingestion of engineered nanomaterials (ENMs) is inevitable due to their widespread utilization in the agrifood industry. Safety evaluation has become pivotal to identify the consequences on human health of exposure to these ingested ENMs. Much of the current understanding of nanotoxicology in the gastrointestinal tract (GIT) is derived from studies utilizing pristine ENMs. In reality, agrifood ENMs interact with their microenvironment, and undergo multiple physicochemical transformations, such as aggregation/agglomeration, dissolution, speciation change, and surface characteristics alteration, across their life cycle from synthesis to consumption. This work sieves out the implications of ENM transformations on their behavior, stability, and reactivity in food and product matrices and through the GIT, in relation to measured toxicological profiles. In particular, a strong emphasis is given to understand the mechanisms through which these transformations can affect ENM induced gut nanotoxicity.

show abstract

“…Beneficial effects due to the interaction of plants with silver NSMs and/or TiO 2 materials have been previously reported. For instance, Shams and coworkers [37] reported an improvement in the development of cucumber due to its interaction with Ag NSMs. Silver doped titanium dioxide can be activated under visible light radiation generating e − /h + reactive species that interact with molecular oxygen and/or water to produce reactive oxygen species (ROS), particularly the hydroxyl radical (HO⋅), a very strong oxidizing agent that has been associated with participating in the loosening of the plant cell wall, resulting in root elongation [38].…”

Section: Effects On a Thaliana By Exposure To Ag@tio 2 And Tio 2 -Cumentioning

confidence: 99%

Evaluation of the Antimicrobial Activity of Nanostructured Materials of Titanium Dioxide Doped with Silver and/or Copper and Their Effects onArabidopsis thaliana

Garcidueñas-Piña

Medina-Ramírez

Guzmán³

et al. 2016

International Journal of Photoenergy

View full text Add to dashboard Cite

Nanostructured materials (NSMs) of silver (Ag@TiO2) and copper (TiO2-Cu2+) doped titanium dioxide were synthesized, fully characterized, and evaluated for their antimicrobial efficiency and effects onArabidopsis thaliana. The NSMs were prepared using an environmentally benign route. The physicochemical properties of the materials were determined with analytical techniques. These materials are active under visible light, exhibit a small size (10–12 nm), are crystalline (anatase), and liberate metal ions (Ag+and Cu2+) in solution. Microbicide activity was observed inE. coliC600 andS. cerevisiaeW303 strains treated with several concentrations of Ag@TiO2and TiO2-Cu2+, radiated and nonradiated, and after different times. Higher inactivation was achieved with Ag@TiO2inE. coli, with value of log inactivation of 2.2 with 0.5 mg/mL after 4 h, than inS. cerevisiae, with a log inactivation of 2.6 with 10 mg/mL after 24 h. The impact of these NSMs in plants was evaluated inArabidopsis thalianaCol-0 strain exposed to such materials at different conditions and concentrations, and physical and biochemical effects were analyzed. Seeds exposed to NSMs did not show effects on germination and growth. However, seedlings treated with these materials modified their growth and their total chlorophyll content.

show abstract

Effect of silver nanoparticles on concentration of silver heavy element and growth indexes in cucumber (Cucumis sativus L. negeen)

Cited by 62 publications

References 27 publications

Impact of Ag Nanoparticles on Seed Germination and Seedling Growth of Green Beans in Normal and Chill Temperatures

Impact of Ag Nanoparticles on Seed Germination and Seedling Growth of Green Beans in Normal and Chill Temperatures

Transformation of Nanomaterials and Its Implications in Gut Nanotoxicology

Evaluation of the Antimicrobial Activity of Nanostructured Materials of Titanium Dioxide Doped with Silver and/or Copper and Their Effects onArabidopsis thaliana

Contact Info

Product

Resources

About