Effect of ZnO nanoparticles on the productivity, Zn biofortification, and nutritional quality of rice in a life cycle study

Yang, Guoying; Yuan, Hang; Ji, Hongting; Liu, Hongjiang; Zhang, Yuefang; Wang, Guodong; LiuGen, Chen; Guo, Zhi

doi:10.1016/j.plaphy.2021.03.053

Cited by 62 publications

(39 citation statements)

References 36 publications

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“…At the same time, other studies showed that, without applying ZnO-NPs, salinity reduced O. sativa growth by reducing the uptake of Zn [65,[80][81][82]. Our results agree with earlier findings that reported external application of ZnO-NPs improved O. sativa growth [65,82,83].…”

Section: Discussionsupporting

confidence: 92%

Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices

et al. 2022

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Understanding the salinity stress mechanisms is essential for crop improvement and sustainable agriculture. Salinity is prepotent abiotic stress compared with other abiotic stresses that decrease crop growth and development, reducing crop production and creating food security-related threats. Therefore, the input of metal oxide nanoparticles (NPs) such as zinc oxide nanoparticles (ZnO-NPs) can improve salt tolerance in crop plants, especially in the early stage of growth. Therefore, the aim of the current study was to evaluate the impact of ZnO-NPs on inducing salt tolerance in two rice (Oryza sativa L.) genotypes of seedlings. An undocumented rice landrace (Kargi) and salinity tolerance basmati rice (CSR 30) seeds were grown in a hydroponic system for two weeks with and without 50 mg/L concentrations of ZnO-NPs in various doses of NaCl (0, 60, 80, and 100 mM). Both Kargi (15.95–42.49%) and CSR 30 (15.34–33.12%) genotypes showed a reduction in plant height and photosynthetic pigments (chlorophyll a and b, carotenoids, and total chlorophyll), Zn content, and K+ uptake under stress condition, compared with control seedlings. On the other hand, stress upregulated proline, malondialdehyde (MDA), Na+ content, and antioxidant enzyme activities—namely, those of superoxide dismutase (SOD), ascorbate peroxidase (APX), catalase (CAT), and glutathione reductase (GR)—in both O. sativa genotypes over the control. However, ZnO-NP-treated genotypes (Kargi and CSR 30) restored the photosynthetic pigment accumulation and K+ level, reforming the stomata and trichome morphology, and also increased antioxidant enzymes SOD, APX, CAT, and GR activity, which alleviated the oxidative stress, while reducing the level of MDA, proline, and H2O2 under stress condition. The present findings suggest that adding ZnO-NPs could mitigate the salinity stress in O. sativa by upregulating the antioxidative system and enhancing the cultivation of undocumented landrace (Kargi) and basmati (CSR 30) genotypes of O. sativa in salinity-affected areas.

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Section: Discussionsupporting

confidence: 92%

Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices

et al. 2022

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“…Such outcomes may be related to the high leaf area index, photosynthetic potential, dry matter accumulation, and low decreasing rate of leaf area at the grain-filling stage. Studies have also proved that zinc fertilisers can promote the transfer of photosynthetic products to the grains and increase the activity of rice protein synthase [18,22,23].…”

Section: Discussionmentioning

confidence: 99%

“…For example, Zn ions released from ZnO NPs form Zn phosphate agglomerates and promote nutrient elements to be more easily absorbed and utilised by the root system, meeting the needs of rice growth [41]. Many studies have shown that nanomaterials can significantly increase the nutrient content of available nitrogen, phosphorus, and potassium in the soil by affecting the activities of related microorganisms [18,40]. Notably, ZnO NPs in rice plants could directly increase the peroxidase activity and help remove the active oxygen, improving the resistance of rice effectively [42].…”

Section: Discussionmentioning

confidence: 99%

“…Notably, Zn fertiliser application to the soil increases the Zn content of grains while also increasing grains' yield [15,16]. Many research reports on Zn fortification of rice show that the amount of Zn fertiliser facilitates rice growth, and an appropriate amount of Zn increases rice yield [17,18]. Unfortunately, the iron and aluminium oxides, clay minerals, and humus in the soil can adsorb and fix Zn ions, reducing Zn fertiliser's effectiveness in the soil.…”

Section: Introductionmentioning

confidence: 99%

“…For instance, Dimpkpa et al reported that under low NPK fertilisation circumstances, Zn oxide nanoparticles (ZnO NPs) would increase growth, nutrient absorption and sorghum crops Zn content [24]. The application of nano-zinc fertiliser can increase the Zn content of grains and promote root development, improving rice growth [18,25]. The positive impacts of ZnO NPs on Cd levels alleviation in several plant species have also been reported [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Zinc Oxide Nanoparticles for Enhancing Rice (Oryza sativa L.) Yield and Quality

et al. 2021

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Zinc oxide nanoparticles (ZnO NPs) have been applied widely in agriculture, and many studies were conducted to evaluate the effect of ZnO NPs on plant growth. So far, few studies have been investigated with regard to the potential effect of ZnO NPs on cereal yield formation or Zn content in grains. Herein, we used a pot experiment, which was conducted involving five dosages of Zn (0.3, 0.6, 1.2, 2.4, and 4.8 g Zn pot−1), to evaluate the impacts which ZnO NPs made in rice yield, dry matter accumulation, rice quality and grain Zn contents. The results demonstrated that ZnO NPs increased the production of grain, dry matter accumulation and particulate Zn content. Compared with control treatment, ZnO NPs application presented higher rice yield with more panicle number (4.83–13.14%), spikelets per panicle (4.81–10.69%), 1000-grain weight (3.82–6.62%) and filled grain rate (0.28–2.36%). Additionally, the dry jointing, heading and mature periods, LAI, SPAD values, and photosynthetic potentials of ZnO NPs were all significantly higher relative to treatment without ZnO NPs. The more photosynthetic substances and higher dry matter accumulated in the whole rice growing stage resulted in higher rice grain yield. Furthermore, ZnO NPs increased brown rice rate, milled rice rate, head rice rate, chalkiness size, chalkiness grain rate, chalkiness degree, amylose content and protein content, improving rice processing and appearance qualities. For the Zn nutrition in rice grain, ZnO NPs application significantly increased the Zn content of edible polished rice and promoted the relocation of Zn from the aleurone layer. This study effectively demonstrated that ZnO NPs could be a potential high-performed fertiliser for enhancing rice yield and quality.

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Effects of foliar spraying different sizes of zinc fertilizer on the growth and cadmium accumulation in rice

Ma,

You,

et al. 2024

J Sci Food Agric

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BACKGROUNDNanotechnology has been widely applied in agricultural science. During the process of reducing metal toxicity and accumulation in rice, nanomaterials exhibit size effects. However, there is limited knowledge regarding these size effects. We aim to explore the impact of fertilizer with various sizes of ZnO nanoparticles (ZnO‐NPs) on rice growth and cadmium (Cd) accumulation and to elucidate the potential mechanism of Cd reduction in rice. Foliar applications of different concentrations (0.5 and 2 mmol L−1) and different sizes (30 and 300 nm ZnO‐NPs) of zinc (Zn) fertilizer (Zn(NO3)2) were performed to investigate the effects on rice growth, Cd accumulation and subcellular distribution, and the expression of Zn–Cd transport genes.RESULTSThe results suggested that all the foliar sprayings can significantly reduce the Cd concentrations in rice grains by 41–61% with the highest reduction in the application of ZnO‐NPs with large size and low concentration. This is related to the enhancement of Cd fixation in leaf cell walls and downregulation of Cd transport genes (OsZIP7, OsHMA2, OsHMA3) in stem nodes. Foliar ZnO‐NPs applications can increase the Zn concentration in grains by 9–21%. Foliar applications of Zn(NO3)2 and small‐sized ZnO‐NPs promoted plant growth and rice yield, while the application of large‐sized ZnO‐NPs significantly reduced rice growth and yield.CONCLUSIONThe study suggests that the rice yield and Cd reduction are dependent on the size and concentration of foliar spraying and the use of large‐sized ZnO‐NPs is the most effective strategy when considering both yield and Cd reduction comprehensively. © 2024 Society of Chemical Industry.

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Effect of ZnO nanoparticles on the productivity, Zn biofortification, and nutritional quality of rice in a life cycle study

Cited by 62 publications

References 36 publications

Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices

Zinc Oxide Nanoparticles Improve Salt Tolerance in Rice Seedlings by Improving Physiological and Biochemical Indices

The Effect of Zinc Oxide Nanoparticles for Enhancing Rice (Oryza sativa L.) Yield and Quality

Effects of foliar spraying different sizes of zinc fertilizer on the growth and cadmium accumulation in rice

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