Combined Effect of Zinc Oxide Nanoparticles and Bacteria on Osmolytes and Antioxidative Parameters of Rice (<i>Oryza sativa</i> L.) Plant Grown in Heavy Metal-Contaminated Water

Akhtar, Nazneen; Khan, Sehresh; Rehman, Shafiq Ur; Rha, Eui Shik; Jamil, Muhammad

doi:10.1155/2022/4148765

Cited by 18 publications

(5 citation statements)

References 56 publications

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“…9). Our findings are consistent with other studies conducted on Solanum lycopersicum L., 121 Portulaca oleracea L., 121 Linum usitatissimum L., 122 and Oryza sativa L. 115 that reported enhanced antioxidant enzyme activities in response to Cd stress. Moreover, tartary buckwheat exposed to Cd showed enhanced levels of APX, POD, SOD, and CAT.…”

Section: Discussionsupporting

confidence: 93%

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Alleviation of cadmium-induced oxidative damage through application of zinc oxide nanoparticles and strigolactones in Solanum lycopersicum L.

Raja,

Singh,

Qadir

et al. 2024

Environ. Sci.: Nano

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Section: Discussionsupporting

confidence: 93%

“…The accumulation of these osmolytes was impacted more by the combination of ZnO NPs and SL (Table 6). Plants like Glycine max L., 41 Cucumis sativa L, 114 Oryza sativa L., 115 and Pleioblastus pygmaeus (Miq.) Nakai.…”

Section: Relative Water Content Proline and Gb Contentsmentioning

confidence: 99%

Alleviation of cadmium-induced oxidative damage through application of zinc oxide nanoparticles and strigolactones in Solanum lycopersicum L.

Raja,

Singh,

Qadir

et al. 2024

Environ. Sci.: Nano

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“…Additionally, earlier research found that under varying metal stress, the antioxidant enzymatic activities like CAT, POD, APX etc. in Oryza sativa, Lactuca sativa, S. lycopersicum, Phaseolus vulgaris, and Hordeum vulgare .…”

Section: Resultsmentioning

confidence: 98%

“…Additionally, earlier research found that under varying metal stress, the antioxidant enzymatic activities like CAT, POD, APX etc. in Oryza sativa , 76 Lactuca sativa , 77 S. lycopersicum , 78 Phaseolus vulgaris, 79 and Hordeum vulgare . 80 During metal poisoning, excessive ROS generation alters plant mitochondrial function and disrupts electron transport to NADH- and NADPH-dependent systems.…”

Section: Resultsmentioning

confidence: 99%

Trichoderma Inoculation Alleviates Cd and Pb-Induced Toxicity and Improves Growth and Physiology of Vigna radiata (L.)

Altaf,

Ilyas,

Shahid

et al. 2024

ACS Omega

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Heavy metals (HMs) pose a serious threat to agricultural productivity. Therefore, there is a need to find sustainable approaches to combat HM stressors in agriculture. In this study, we isolated Trichoderma sp. TF-13 from metal-polluted rhizospheric soil, which has the ability to resist 1600 and 1200 μg mL −1 cadmium (Cd) and lead (Pb), respectively. Owing to its remarkable metal tolerance, this fungal strain was applied for bioremediation of HMs in Vigna radiata (L.). Strain TF-13 produced siderophore, salicylic acid (SA; 43.4 μg mL −1 ) and 2,3-DHBA (21.0 μg mL −1 ), indole-3-acetic acid, ammonia, and ACC deaminase under HM stressed conditions. Increasing concentrations of tested HM ions caused severe reduction in overall growth of plants; however, Trichoderma sp. TF-13 inoculation significantly (p ≤ 0.05) increased the growth and physiological traits of HM-treated V. radiata. Interestingly, Trichoderma sp. TF-13 improved germination rate (10%), root length (26%), root biomass (32%), and vigor index (12%) of V. radiata grown under 25 μg Cd kg −1 soil. Additionally, Trichoderma inoculation showed a significant (p ≤ 0.05) increase in total chlorophyll, chl a, chl b, carotenoid content, root nitrogen (N), and root phosphorus (P) of 100 μg Cd kg −1 soil-treated plants over uninoculated treatment. Furthermore, enzymatic and nonenzymatic antioxidant activities of Trichoderma inoculated in metal-treated plants were improved. For instance, strain TF-13 increased proline (37%), lipid peroxidation (56%), catalase (35%), peroxidase (42%), superoxide dismutase (27%), and glutathione reductase (39%) activities in 100 μg Pb kg −1 soil-treated plants. The uptake of Pb and Cd in root/ shoot tissues was decreased by 34/39 and 47/38% in fungal-inoculated and 25 μg kg −1 soil-treated plants. Thus, this study demonstrates that stabilizing metal mobility in the rhizosphere through Trichoderma inoculation significantly reduced the detrimental effects of Cd and Pb toxicity in V. radiata and also enhanced development under HM stress conditions.

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“…Synergistic impact of green synthesized zinc oxide nanoparticles (ZnO-NPs) (5 -10 mg/L) and Bacillus spp. (Bacillus cereus and Lysinibacillus macroides) have been observed in the improvement of physiological and biochemical activities of rice seedlings under heavy metals contaminated wastewater [34].…”

Section: Introductionmentioning

confidence: 99%

Soil and Plant Enzymes Responses to Zinc Oxide Nanoparticles in Submerged Rice (Oryza sativa L.) Ecosystem

et al. 2023

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In the present study, the effects of zinc oxide nanoparticles (ZnO NPs) on rice (Oryza sativa L. cv. PB1509) plant growth were assessed in hydroponics (5, 10, 25, 50 mg L−1) and soil microcosm (5, 10, 25 50 mg kg−1) experiments. In both hydroponics and soil experiments, Zinc (Zn) accumulation in plant parts (roots, shoots and grains) was found to increase with increasing doses of ZnO NPs. Grains accumulated 29 mg kg−1 Zn at 50 mg kg−1 ZnO NPs in the soil experiment. In the hydroponics experiment, growth and photosynthetic pigments were induced by ZnO NPs up to 10 mg L−1, while higher doses of 25 and 50 mg L−1 were toxic to plant growth. Antioxidant enzyme activities (SOD, CAT, APX and GPX) were mostly increased or unaffected by all ZnO NPs doses. In soil experiments, acid and alkaline phosphatase activities were increased at 5 mg kg−1 followed by a declining trend. However, a significant decrease occurred only at 50 mg kg−1. Urease activity in soil was significantly increased at all doses of ZnO NPs, while the activity of dehydrogenase did not show any significant change up to 25 mg kg−1. The length of plants and photosynthetic pigments did not show much toxicity except root length beyond 10 mg kg−1; however, the biomass of plants including grains was significantly lower than control beyond 5 mg kg−1 dose. The activity of antioxidant enzymes (GPX, APX and CAT) showed a significant increase at all doses of ZnO NPs. The DTPA extractable Zn concentration in the soil was significantly elevated with increasing exposure concentrations of ZnO NPs. Based on hydroponics and soil experiments, this study suggests a dose of up to 10 mg L−1 or 10 mg kg−1 would be an appropriate dose for augmenting the growth of rice plants and Zn accumulation, and this can be practically utilized for rice plants growing in submerged conditions. HIGHLIGHTS Rice plants exposed to ZnO nanoparticles in hydroponics and soil Zinc accumulation increased significantly in roots, shoots and grains Lower dose of ZnO NPs (10 mg/L or mg/kg) augmented plant growth Antioxidant enzymes showed a significant increase in activity in ZnO NPs treatment GRAPHICAL ABSTRACT

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Combined Effect of Zinc Oxide Nanoparticles and Bacteria on Osmolytes and Antioxidative Parameters of Rice (Oryza sativa L.) Plant Grown in Heavy Metal-Contaminated Water

Cited by 18 publications

References 56 publications

Alleviation of cadmium-induced oxidative damage through application of zinc oxide nanoparticles and strigolactones in Solanum lycopersicum L.

Alleviation of cadmium-induced oxidative damage through application of zinc oxide nanoparticles and strigolactones in Solanum lycopersicum L.

Trichoderma Inoculation Alleviates Cd and Pb-Induced Toxicity and Improves Growth and Physiology of Vigna radiata (L.)

Soil and Plant Enzymes Responses to Zinc Oxide Nanoparticles in Submerged Rice (Oryza sativa L.) Ecosystem

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