Zinc Oxide Nanoparticles Affect Biomass Accumulation and Photosynthesis in Arabidopsis

Wang, Xiaoping; Yang, Xinyu; Chen, Siyu; Li, Qianqian; Wang, Wei; Hou, Chunjiang; Xiao, Guoqing; Wang, Li; Wang, Shucai

doi:10.3389/fpls.2015.01243

Cited by 248 publications

(130 citation statements)

References 53 publications

(66 reference statements)

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“…Nanomaterials have been reported to improve the germination rate of rice seeds; increase the root growth of corn, tomato and cucumber; enhance the growth rate of coriander and garlic plants; protect the photosynthesis system; and aid in defense against plant disease [4,5]. However, research has also indicated that nanomaterial treatments can result in decreased germination rates and photosynthetic efficiency, reduced root and shoot length, reduction of biomass, and reduced nutrient contents in soybean [6,7]. The regulation of nanomaterials in plants is complex and dynamic and and depends on the type of nanoparticle, treatments (concentration, tduration and method), and phytohormone balance [8].…”

Section: Introductionmentioning

confidence: 99%

Graphene oxide and indole-3-acetic acid cotreatment regulates the root growth of Brassica napus L. via multiple phytohormone pathways

Xie

Fan

et al. 2020

BMC Plant Biol

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Background: Studies have indicated that graphene oxide (GO) could regulated Brassica napus L. root growth via abscisic acid (ABA) and indole-3-acetic acid (IAA). To study the mechanism and interaction between GO and IAA further, B. napus L (Zhongshuang No. 9) seedlings were treated with GO and IAA accordance with a two factor completely randomized design. Results: GO and IAA cotreatment significantly regulated the root length, number of adventitious roots, and contents of IAA, cytokinin (CTK) and ABA. Treatment with 25 mg/L GO alone or IAA (> 0.5 mg/L) inhibited root development. IAA cotreatment enhanced the inhibitory role of GO, and the inhibition was strengthened with increased in IAA concentration. GO treatments caused oxidative stress in the plants. The ABA and CTK contents decreased; however, the IAA and gibberellin (GA) contents first increased but then decreased with increasing IAA concentration when IAA was combined with GO compared with GO alone. The 9-cis-epoxycarotenoid dioxygenase (NCED) transcript level strongly increased when the plants were treated with GO. However, the NCED transcript level and ABA concentration gradually decreased with increasing IAA concentration under GO and IAA cotreatment. GO treatments decreased the transcript abundance of steroid 5-alpha-reductase (DET2) and isochorismate synthase 1 (ICS), which are associated with brassinolide (BR) and salicylic acid (SA) biosynthesis, but increased the transcript abundance of brassinosteroid insensitive 1-associated receptor kinase 1 (BAK1), cam-binding protein 60-like G (CBP60) and calmodulin binding protein-like protein 1, which are associated with BR and SA biosynthesis. Last, GO treatment increased the transcript abundance of 1-aminocyclopropane-1-carboxylic acid synthase 2 (ACS2), which is associated with the ethylene (ETH) pathway.(Continued on next page) Conclusions: Treatment with 25 mg/L GO or IAA (> 0.5 mg/L) inhibited root development. However, IAA and GO cotreatment enhanced the inhibitory role of GO, and this inhibition was strengthened with increased IAA concentration. IAA is a key factor in the response of B. napus L to GO and the responses of B. napus to GO and IAA cotreatment involved in multiple pathways, including those involving ABA, IAA, GA, CTK, BR, SA. Specifically, GO and IAA cotreatment affected the GA content in the modulation of B. napus root growth.

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Section: Introductionmentioning

confidence: 99%

Graphene oxide and indole-3-acetic acid cotreatment regulates the root growth of Brassica napus L. via multiple phytohormone pathways

Xie

Fan

et al. 2020

BMC Plant Biol

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“…This is perhaps due to direct interaction of TiO 2 nanoparticles with carotenoid biomolecules. However, Wang et al (2016) pointed out that genes are mainly responsible for enhancement of pigments under influence of ZnO and TiO 2 nanoparticles.…”

Section: Biochemical Parametersmentioning

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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“…The randomly selected 10 plants after 14 days were washed with distilled water, blotter dried and fresh weight was determined. Dry weight was determined after drying the plant material in oven at 70 0 C for 24h and recorded 23 .…”

Section: Biomass Studymentioning

confidence: 99%

Nano-cuprous oxide enhances seed germination and seedling growth in Lycopersicum esculentum plants

Ananda¹,

Shobha²,

Ks³

et al. 2019

J. Drug Delivery Ther.

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This study was carried out to determine the influence of cuprous oxide nanoparticles (Cu2O NPs) biosynthesised from leaf extracts of Flacourtia montana on the tomato Lycioersicum esculentum seed germination, seedling growth and vigour index. Here we examined the promotory and phytotoxic effect of Cu2O NPs (0-160ppm) on tomato seeds resulted in dosage dependent response. The highest germination percentage (95%) was observed at 20ppm Cu2O NPs, however, above 20ppm Cu2O NPs, there is a reduction in the seed germination. The tomato seedlings showed increased root and shoot elongation up to 20ppm Cu2O NPs concentration, further increase in NPs concentration caused the negative effect on plants growth and development. The leaf pigments showed increasing trend in tomato plants after treatment with Cu2O NPs up to 20ppm as compared to control. Phytotoxicity of Cu2O NPs in tomato seedlings demonstrated by lower contents of chlorophyll a, b and carotenoid pigments. The study of effect on antioxidant enzymes showed increases in activity with increase in Cu2O NPs concentration for two enzymes, Super oxide dismutase (SOD) and Glutathione Peroxidase (GPX) out of five enzymes treated. High antioxidant activity of enzymes is followed by the increased lipid peroxidation and decrease in free radical scavenging activity by the DPPH. The activity of Catalase, Pheny Alanine Aminolyase and Poly Phenol Oxidase enzymes were found to increase up to 20ppm as compared to control and above this, all three enzymes showed decrease in activity. Uptake of Cu2O NPs nanoparticle by tomato seedlings was confirmed by atomic absorption spectroscopy. Key words: Nano-Cuprous Oxide, Flacourtia montana, Tomato, antioxidant enzymes, lipid peroxidation

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Zinc Oxide Nanoparticles Affect Biomass Accumulation and Photosynthesis in Arabidopsis

Cited by 248 publications

References 53 publications

Graphene oxide and indole-3-acetic acid cotreatment regulates the root growth of Brassica napus L. via multiple phytohormone pathways

Graphene oxide and indole-3-acetic acid cotreatment regulates the root growth of Brassica napus L. via multiple phytohormone pathways

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

Nano-cuprous oxide enhances seed germination and seedling growth in Lycopersicum esculentum plants

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