Crosstalk of nanoparticles and phytohormones regulate plant growth and metabolism under abiotic and biotic stress

Tripathi, Deepika; Singh, Mithilesh; Pandey-Rai, Shashi

doi:10.1016/j.stress.2022.100107

Cited by 63 publications

(32 citation statements)

References 89 publications

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“…The defensive role of Si NPs can be summarized into two categories. First, Si NPs could activate physical structural defense by increasing the Si accumulation and lignin biosynthesis in plants to enhance tissue abrasiveness, in turn decreasing the palatability and digestibility of plants for herbivore insects. − Second, Si NP uptake by plants has been shown to active plant natural immune systems via the activation of phytohormone signaling pathways, including jasmonic acid (JA) and SA, which modulate plant biochemical defenses against biotic stresses. , For instance, SiO 2 NP (54 nm) exposure notably enhanced systemic acquired resistance in Arabidopsis plants against P. syringae via activating the SA-dependent defense . Moreover, we have previously shown that leaf spraying of Si NDs could enhance maize leaf chlorogenic acid content and in turn enhance plant constitutive resistance against herbivory within 12 h .…”

Section: Introductionmentioning

confidence: 99%

“…18−20 Second, Si NP uptake by plants has been shown to active plant natural immune systems via the activation of phytohormone signaling pathways, including jasmonic acid (JA) and SA, which modulate plant biochemical defenses against biotic stresses. 16,21 For instance, SiO 2 NP (54 nm) exposure notably enhanced systemic acquired resistance in Arabidopsis plants against P. syringae via activating the SAdependent defense. 16 Moreover, we have previously shown that leaf spraying of Si NDs could enhance maize leaf chlorogenic acid content and in turn enhance plant constitutive resistance against herbivory within 12 h. 18 Compared to other nanoscale Si particles (e.g., pristine SiO 2 NPs), Si NDs have a smaller particle size and possess several additional qualities (e.g., good water solubility/stability, low toxicity, and favorable biocompatibility), 22,23 allowing Si NDs to infiltrate plant tissues more effectively than other larger and pristine SiO 2 NPs and in turn enhance physiological processes, such as photosynthesis, 22 and aquaporins gene expression.…”

Section: Introductionmentioning

confidence: 99%

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Silicon Nanodots Increase Plant Resistance against Herbivores by Simultaneously Activating Physical and Chemical Defenses

et al. 2023

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Nanosilicon applications have been shown to increase plant defenses against both abiotic and biotic stresses. Silicon quantum nanodots (Si NDs), a form of nanosilicon, possess excellent biological and physiochemical properties (e.g., minimal size, high water solubility, stability, and biocompatibility), potentially making them more efficient in regulating plant responses to stress than other forms of silicon. However, to date, we still lack mechanistic evidence for how soil-applied Si NDs alter the regulation of plant physical and chemical defenses against insect herbivores. To address this gap, we compared the effect of fluorescent amine-functionalized Si NDs (5 nm) and the conventional fertilizer sodium silicate on maize (Zea mays L.) physical and chemical defenses against the oriental armyworm (Mythimna separata, Walker) caterpillars. We found that 50 mg/kg Si NDs and sodium silicate additions inhibited the growth of caterpillars the most (35.7% and 22.8%, respectively) as compared to other application doses (0, 10, and 150 mg/kg). Both Si NDs and silicate addition activated biosynthesis genes responsible for chemical (benzoxazinoids) and physical (lignin) defense production. Moreover, Si NDs upregulated the gene expression of antioxidant enzymes (SOD, CAT, and POD) and promoted the antioxidant metabolism (flavonoids) in maize leaves under M. separata attack. Finally, we show that, under field conditions, Si ND addition increased maize cob weight (28.7%), cob grain weight (40.8%), and 100-grain weight (26.5%) as compared to the control, and more so than the conventional silicon fertilizer. Altogether, our findings highlight the potential for Si NDs to be used as an effective and ecofriendly crop protection strategy in agroecosystems.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silicon Nanodots Increase Plant Resistance against Herbivores by Simultaneously Activating Physical and Chemical Defenses

et al. 2023

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“…However, the La 2 O 3 NP exposure in the absence and presence of earthworms notably enhanced the IAA content in the taproot peel tissues by 24.2 and 53.6%, respectively (Figure C), which contributed to the growth and division of epidermal cells, thereby promoting taproot thickening . It has been reported that NPs could regulate phytohormones in the shoots and roots of plants. , For instance, 100 mg L –1 ZnO NPs reduced the IAA content in the apices and leaves of Arabidopsis thaliana, and 100 mg L –1 Fe 2 O 3 NPs also decreased the IAA content in the roots of cotton (Jihe 321) . This could be due to the metal NP-mediated inhibition effect on the expression of IAA biosynthesis genes.…”

Section: Resultsmentioning

confidence: 90%

“…33 It has been reported that NPs could regulate phytohormones in the shoots and roots of plants. 34,35 For instance, 100 mg L −1 ZnO NPs reduced the IAA content in the apices and leaves of Arabidopsis thaliana, 36 and 100 mg L −1 Fe 2 O 3 NPs also decreased the IAA content in the roots of cotton (Jihe 321). 37 This could be due to the metal NPmediated inhibition effect on the expression of IAA biosyn-thesis genes.…”

Section: Impact On Phytohormonementioning

confidence: 99%

Earthworms Drive the Effect of La₂O₃ Nanoparticles on Radish Taproot Metabolite Profiles and Rhizosphere Microbial Communities

Xiao

Fan

Xie

et al. 2022

Environ. Sci. Technol.

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To promote the sustainable and safe application of nanotechnology employing engineered nanoparticles (NPs) in agroecosystems, it is crucial to pay more attention to the NP-mediated biological response process and environmental impact assessment simultaneously. Herein, 50 mg kg–1 La2O3 NPs were added to soils without and with earthworms for cherry radish growth for 50 days to investigate the response changes of metabolites in radish above- and below-ground organs and rhizosphere bacterial communities. We found that La2O3 NP exposure, especially with earthworms, notably increased the La bioavailability and uptake by taproots and eventually increased radish leaf sucrose content and plant biomass. The La2O3 NP exposure significantly altered metabolite profiles in taproot flesh and peel tissues, and particularly La2O3 NP exposure combined with earthworms was more conducive to La2O3 NPs to promote radish taproot peel to synthesize more secondary antioxidant metabolites. Moreover, compared with the control, the La2O3 NP exposure resulted in weaker and fewer correlations between rhizosphere bacteria and taproot metabolites, but this was recovered somewhat after the inoculation of earthworms. Altogether, our results provide novel insights into the soil-fauna-driven biological and biochemical impact of La2O3 NP exposure on edible root crops and the long-term environmental risks to the rhizosphere microbiota in agroecosystems.

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“…There are currently a growing number of papers indicating that ZnO NPs can be employed to alleviate abiotic stress in plants [ 11 , 12 , 13 , 14 , 15 ]. Additionally, to help plants resist abiotic challenges, ZnO NPs enhance synthesis of photosynthetic pigments, control redox status, strengthen antioxidant defense mechanisms, and regulate primary glucose metabolism and phytohormone signaling [ 16 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

The Combined Analysis of Transcriptome and Antioxidant Enzymes Revealed the Mechanism of EBL and ZnO NPs Enhancing Styrax tonkinensis Seed Abiotic Stress Resistance

Liu

Faizan

et al. 2022

Genes

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As global climate change worsens, trees will have difficulties adapting to abiotic pressures, particularly in the field, where environmental characteristics are difficult to control. A prospective commercial and ornamental tree species, Styrax tonkinensis, has its seed oil output and quality reduced as a result, which lowers the economic benefits. This necessitates growers to implement efficient strategies to increase the seeds of woody biofuel species’ tolerance to abiotic stress. Numerous studies have shown that ZnO nanoparticles (NPs), a new material, and BRs assist plants to increase their resilience to abiotic stress and subsequently adapt to it. However, there have not been many investigations into S. tonkinensis seed resistance. In this study, we examined the changes in antioxidant enzyme activities and transcriptomic results of S. tonkinensis seeds throughout the seed development period to investigate the effects of 24-epibrassinolide (EBL), one of the BRs, and ZnO NPs treatments alone or together on the stress resistance of S. tonkinensis seeds. On 70, 100, and 130 days after flowering (DAF), spraying EBL or ZnO NPs increased the activity of antioxidant enzymes (POD, SOD, and CAT) in S. tonkinensis seeds. Moreover, when the EBL and ZnO NPs were sprayed together, the activities of antioxidant enzymes were the strongest, which suggests that the positive effects of the two can be superimposed. On 70 and 100 DAF, the EBL and ZnO NPs treatments improved seed stress resistance, mostly through complex plant hormone crosstalk signaling, which includes IAA, JA, BR, and ABA signaling. Additionally, ABA played an essential role in hormone crosstalk, while, on 130 DAF, due to the physiological characteristics of seeds themselves in the late stage of maturity, the improvement in seed stress resistance by EBL and ZnO NPs was related to protein synthesis, especially late embryogenesis-abundant protein (LEA), and other nutrient storage in seeds. Spraying EBL and ZnO NPs during the seed growth of S. tonkinensis could significantly increase seed stress resistance. Our findings provide fresh perspectives on how cultural practices can increase abiotic stress tolerance in woody seedlings.

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Crosstalk of nanoparticles and phytohormones regulate plant growth and metabolism under abiotic and biotic stress

Cited by 63 publications

References 89 publications

Silicon Nanodots Increase Plant Resistance against Herbivores by Simultaneously Activating Physical and Chemical Defenses

Silicon Nanodots Increase Plant Resistance against Herbivores by Simultaneously Activating Physical and Chemical Defenses

Earthworms Drive the Effect of La₂O₃ Nanoparticles on Radish Taproot Metabolite Profiles and Rhizosphere Microbial Communities

The Combined Analysis of Transcriptome and Antioxidant Enzymes Revealed the Mechanism of EBL and ZnO NPs Enhancing Styrax tonkinensis Seed Abiotic Stress Resistance

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Crosstalk of nanoparticles and phytohormones regulate plant growth and metabolism under abiotic and biotic stress

Cited by 63 publications

References 89 publications

Silicon Nanodots Increase Plant Resistance against Herbivores by Simultaneously Activating Physical and Chemical Defenses

Silicon Nanodots Increase Plant Resistance against Herbivores by Simultaneously Activating Physical and Chemical Defenses

Earthworms Drive the Effect of La2O3 Nanoparticles on Radish Taproot Metabolite Profiles and Rhizosphere Microbial Communities

The Combined Analysis of Transcriptome and Antioxidant Enzymes Revealed the Mechanism of EBL and ZnO NPs Enhancing Styrax tonkinensis Seed Abiotic Stress Resistance

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Earthworms Drive the Effect of La₂O₃ Nanoparticles on Radish Taproot Metabolite Profiles and Rhizosphere Microbial Communities