Nitric oxide alleviates silver nanoparticles (AgNps)-induced phytotoxicity in Pisum sativum seedlings

Tripathi, Durgesh Kumar; Singh, Vijay Pratap; Singh, Shikha; Srivastava, Prabhat Kumar; Singh, Vijay Pratap; Singh, Shikha; Prasad, Sheo Mohan; Singh, Prashant Kumar; Dubey, Nawal Kishore; Pandey, Avinash C.; Chauhan, Devendra Kumar

doi:10.1016/j.plaphy.2016.06.015

Cited by 335 publications

(115 citation statements)

References 42 publications

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“…The enrichment ability of sunflower ( Helianthus annuus L. ) under Sb stress was larger in roots than in leaves, but Sb stress inhibited plant growth; the Sb accumulation in the aboveground part significantly altered the physical conditions of sunflower, reduced intercellular gaps and made leaf tissues closer (Vaculík et al, 2015; Ortega et al, 2017). According to the report, root is the main organ for taking up metal nanoparticles from water are badly influenced in comparison with shoot in some plants (Tripathi et al, 2016; Anshu et al, 2017). …”

Section: Discussionmentioning

confidence: 99%

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

et al. 2018

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This study was aimed to explore that effects of Sb on physiological parameters of Acorus calamus and the possibility of using A. calamus as a remediation plant. A. calamus potted experiments were conducted using different concentrations (0, 250, 500, 1000, and 2000 mg/kg) of antimony potassium tartrate (Sb3+) (marked as CK, T1, T2, T3, and T4, respectively) and potassium pyroantimonate (Sb5+) (marked as CK, T′1, T′2, T′3, and T′4, respectively). The effects of Sb stress (Sb3+ and Sb5+) on leaf photosynthetic pigments, biomass, photosynthetic characteristics and chlorophyll fluorescence parameters of potted A. calamus were studied. With the rise of Sb3+ concentration from T1 to T4, the leaf pigment contents (chlorophyll a, b, carotenoid), plant height, dry weight, net photosynthetic rate (Pn), stomatal conductance (Gs), evaporation rate (E), PSII maximum photochemical efficiency (Fv/Fm), and PSII electron transfer quantum yield rate (ΦPSII) of A. calamus all reduced, while intercellular CO2 concentration (Ci) significantly increased. The reduction of Pn was mainly induced by non-stomatal limitation. Chlorophyll a/b ratio increased significantly versus the control, while carotenoid/chlorophyll ratio (Car/Chl) first decreased and then increased. The leaf Chl a, Chl b, Car, plant height, dry weight, Pn, Gs, E, Fv/Fm, and ΦPSII all maximized in T′1 (250 mg/kg), but were not significantly different from the control. As the Sb5+ concentration increased from T′2 to T′4, the above indices all decreased and were significantly different from the control. Moreover, intercellular CO2 concentration (Ci) decreased significantly. The reduction of Pn was caused by non-stomatal limitation, indicating the mesophyll cells were damaged. The Car/Chl ratio was stable within 0–500 mg/kg Sb, but decreased in T3 and T4, and rose in T′3 and T′4. After Sb3+ and Sb5+ treatments, translocation factor varied 19.44–27.8 and 19.44–24.86%, respectively. In conclusion, different form Sb3+ treatment, Sb5+ treatment showed a Hormesi effect, as low-concentration treatment promoted A. calamus growth, but high-concentration treatment inhibited its growth. The two forms of Sb both caused unfavorable effects on A. calamus, but the seedlings did not die and were modestly adaptive and Sb-accumulative. A. calamus, which is easily maintained and cultivated, can serve as a good candidate for phytoremediation of water contaminated with Sb.

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Section: Discussionmentioning

confidence: 99%

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

et al. 2018

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“…Proteomic analysis of AgNPs treated O. sativa roots revealed an increased abundance of SOD, APX, and glutathione- S -transferase (GST) (Mirzajani et al, 2014). These NPs also stimulated the activities of SOD and APX significantly, while inhibiting glutathione reductase (GR) and DHAR in Pisum sativum L. seedlings (Tripathi et al, 2017). Catalase (CAT), another enzyme that protects the cells from oxidative damage, was significantly elevated upon treatment of wheat roots with 500 mg/kg CuONPs (Dimkpa et al, 2012).…”

Section: “Oxidative Stress”- a Common Response Of Plant To Nps Treatmentmentioning

confidence: 99%

“…NO, another universal signaling molecule that plays a central role in secondary metabolite production in plant cells (Zhang et al, 2012; Zeng et al, 2014), is also involved in plant–NP interactions. For instance, AgNP-induced phytotoxicity could be alleviated by NO in P. sativum seedlings (Tripathi et al, 2017). Correspondingly, O. sativa NO excess mutant (noe1) plants were tolerant to ZnONP treatment, whereas OsNOA1-silenced (noa1) plants were susceptible to ZnONP-induced phytotoxicity (Chen et al, 2015).…”

Section: “Np-induced Ros”- Can It Be An Inductive Signal For Plant Sementioning

confidence: 99%

“…Although the accumulation of NPs in chloroplasts and damage to the photosynthetic apparatus (Da Costa and Sharma, 2016; Jiang et al, 2017) supports the former, the fact that to reach the chloroplast NPs must cross the plasma membrane, where they can induce reactive oxygen species (ROS) via NADPH oxidases (Sosan et al, 2016) argues the reverse. ROS production, damage to the membrane structure and function, and fluctuation in antioxidant enzymatic activities are documented across plant species as common responses to NPs (Thwala et al, 2013; Vannini et al, 2013; Fu et al, 2014; Mirzajani et al, 2014; Hossain et al, 2015; Xia et al, 2015; Jiang et al, 2017; Tripathi et al, 2017). A few studies have also demonstrated that treatment of plants and photosynthetic microorganisms with NPs resulted in increased production of phenolics (Comotto et al, 2014; Ghorbanpour and Hadian, 2015; Večeřová et al, 2016), which might act as antioxidants to scavenge the ROS (Dixon and Paiva, 1995; Franklin et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Nanoparticles Alter Secondary Metabolism in Plants via ROS Burst

2017

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The particles within the size range of 1 and 100 nm are known as nanoparticles (NPs). NP-containing wastes released from household, industrial and medical products are emerging as a new threat to the environment. Plants, being fixed to the two major environmental sinks where NPs accumulate — namely water and soil, cannot escape the impact of nanopollution. Recent studies have shown that plant growth, development and physiology are significantly affected by NPs. But, the effect of NPs on plant secondary metabolism is still obscure. The induction of reactive oxygen species (ROS) following interactions with NPs has been observed consistently across plant species. Taking into account the existing link between ROS and secondary signaling messengers that lead to transcriptional regulation of secondary metabolism, in this perspective we put forward the argument that ROS induced in plants upon their interaction with NPs will likely interfere with plant secondary metabolism. As plant secondary metabolites play vital roles in plant performance, communication, and adaptation, a comprehensive understanding of plant secondary metabolism in response to NPs is an utmost priority.

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“…The levels of oxide stress markers (SOR, H 2 O 2 , and MDA) have increased significantly under the action of Ag 2 O nanoparticles, followed by the stimulation of superoxide dismutase and ascorbate peroxidase activity, and the reduction of the total amount of ascorbate and glutathione in the tissues of the leaves and roots of the plants studied. According to Tripathi, the observed negative changes are associated with oxide stress and elevated levels of argentum in plant tissues [21]. …”

Section: Introductionmentioning

confidence: 99%

The Effect of Silver and Copper Nanoparticles on the Wheat—Pseudocercosporella herpotrichoides Pathosystem

et al. 2017

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The paper covers the study of the effects of silver (Ag) and copper (Cu) nanoparticles on wheat—Pseudocercosporella herpotrichoides pathosystem in general and, separately, on their interaction both with the plant and with the pathogen. Plants, treated with nonionic colloidal solutions of biogenic metal nanoparticles of Ag and Cu, have taken seed treatment as stress and have demonstrated the same changes in the dynamic patterns of thiobarbituric acid reactive substances (TBARS) content as a seedling infection or in its combination with a nanoparticle treatment. The wheat variety, which is sensitive to pathogen action, has showed a substantial (100%) increase in the TBARS contents, while the other varieties has shown lesser (40%) changes in the TBARS content as compared to the control. Besides, both silver and copper nanoparticles have not affected the growth and development of P. herpotrichoides, thus suggesting that the effect of nanoparticles is determined by the plant’s responses to the pathogen rather than the phytotoxic action of the copper or silver nanoparticles, at least during the initial stages of the pathological process.

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Nitric oxide alleviates silver nanoparticles (AgNps)-induced phytotoxicity in Pisum sativum seedlings

Cited by 335 publications

References 42 publications

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

Effects of Antimony Stress on Photosynthesis and Growth of Acorus calamus

Nanoparticles Alter Secondary Metabolism in Plants via ROS Burst

The Effect of Silver and Copper Nanoparticles on the Wheat—Pseudocercosporella herpotrichoides Pathosystem

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