The national maize hybrid as a potential mediator in the contamination of the food chain with heavy metals

Petrović, Stefan; Mitov, Denis; Mrmošanin, Jelena; Arsić, Biljana; Pavlović, Aleksandra; Tošić, Snežana B.

doi:10.1080/03067319.2023.2230145

Cited by 2 publications

(1 citation statement)

References 30 publications

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“…Some varieties exhibited low accumulation capacities for cadmium, lead, chromium and arsenic in their grains, while others had high accumulation capacities for specific heavy metals (Zha et al, 2023). Cadmium has the highest impact on the accumulation of heavy metals in maize plants, causing negative effects on plant mass and height (Petrović et al, 2023). Maize plants cultivated in soils contaminated by mine tailings have shown high concentrations of heavy metals in their harvestable parts (Wei et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation and uptake pattern of heavy metals in maize

Abdullahi,

Dandago,

Gambo

et al. 2024

dujopas

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The detrimental impact of heavy metals on human health necessitates a focus on their contamination in the food chain. Heavy metals possess carcinogenic, mutagenic, teratogenic, and endocrine-disrupting properties. The objective of the study was to ascertain how Zn, Pb, Cd, Ni, Co, Cu, Cr, and Hg are accumulated in the roots and grains of maize samples cultivated under the Kano River Irrigation Project during both wet and dry seasons production and subsequently compare the levels of these heavy metals with the recommended permissible limits established by FAO/WHO. Additionally, the research sought to employ Translocation Factors to examine the uptake pattern of heavy metals in maize during the two growing seasons. Maize samples were procured from 10 different locations within the irrigation scheme during 2022 wet season and 2023 dry season harvests. The samples were prepared using standard laboratory protocols and heavy metals were determined using atomic absorption spectrophotometer. The heavy metals accumulation in maize grains was found in the order Zn>Cu>Pb>Ni>Co during wet season production. Cd, Cr, and Hg were not detected in samples collected during the wet season. It is only the concentration of Zn that exceeded the permissible limit in the samples collected during wet season production. The accumulation order during the dry season was Zn>Cu>Cr>Pb>Ni>Co>Cd. Hg was not detected in all the maize grain samples. The concentrations of Zn, Pb, Cd and Cr exceeded permissible limits in maize grains samples collected during dry season production.

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Section: Introductionmentioning

confidence: 99%

Seasonal variation and uptake pattern of heavy metals in maize

Abdullahi,

Dandago,

Gambo

et al. 2024

dujopas

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The Mechanisms of Cadmium Stress Mitigation by Fungal Endophytes from Maize Grains

Awais,

Xiang,

Yang

et al. 2024

JoF

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Maize is a crucial staple crop that ensures global food security by supplying essential nutrients. However, heavy metal (HM) contamination inhibits maize growth, reduces output, and affects food security. Some endophytic fungi (EFs) in maize seeds have the potential to enhance growth and increase dry biomass, offering a solution to mitigate the negative effect of HM contamination. Using these functional EFs could help maintain crop production and ensure food safety in HM-contaminated areas. In the present study, the diversity of EFs in corn grains from various HM-contaminated areas in China was studied through culture-dependent and culture-independent methods. We tested the plant growth-promoting (PGP) traits of several dominant culturable isolates and evaluated the growth-promoting effects of these twenty-one isolates through pot experiments. Both studies showed that HM contamination increased the diversity and richness of corn grain EFs and affected the most dominant endophytes. Nigrospora and Fusarium were the most prevalent culturable endophytes in HM-contaminated areas. Conversely, Cladosporium spp. were the most isolated endophytes in non-contaminated areas. Different from this, Saccharomycopsis and Fusarium were the dominant EFs in HM-contaminated sites, while Neofusicoccum and Sarocladium were dominant in non-contaminated sites, according to a culture-independent analysis. PGP trait tests indicated that 70% of the tested isolates (forty-two) exhibited phosphorus solubilization, IAA production, or siderophore production activity. Specifically, 90% of the tested isolates from HM-contaminated sites showed better PGP results than 45% of the isolates from non-contaminated sites. The benefit of the twenty-one isolates on host plant growth was further studied through pot experiments, which showed that all the isolates could improve host plant growth. Among them, strains derived from HM-contaminated sites, including AK18 (Nigrospora), AK32 (Beauveria), SD93 (Gibberellia), and SD64 (Fusarium), had notable effects on enhancing the dry biomass of shoots and roots of maize under Cd stress. We speculate that the higher ratio of PGP EFs in corn grains from HM-contaminated areas may explain their competitiveness in such extreme environments. Fusarium and Cladosporium isolates show high PGP properties, but they can also be phytopathogenic. Therefore, it is essential to evaluate their pathogenic properties and safety for crops before considering their practical use in agriculture.

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The national maize hybrid as a potential mediator in the contamination of the food chain with heavy metals

Cited by 2 publications

References 30 publications

Seasonal variation and uptake pattern of heavy metals in maize

Seasonal variation and uptake pattern of heavy metals in maize

The Mechanisms of Cadmium Stress Mitigation by Fungal Endophytes from Maize Grains

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