Arsenic and zinc concentrations in wheat grains under soil zinc application and arsenic-contaminated irrigation

IF 1.5 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Clean-soil Air Water Pub Date : 2024-08-06 DOI:10.1002/clen.202300106

Ammara Basit, Shahid Hussain

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Abstract

Above-permissible levels of arsenic (As) in irrigation water lead to toxic levels in wheat grains, increasing health risks for humans. In this study, two zinc (Zn)-biofortified wheat (Triticum aestivum L.) cultivars (Akbar-2019 and Zincol-2016) were grown in pots with two Zn application rates (0 and 8 mg Zn kg⁻¹) and three levels of As in irrigation water (distilled-water control, 100 and 1000 µg As L⁻¹). Irrigation with As-contaminated water decreased dry matter yields, concentrations of grain phosphorus (P) and Zn, and estimated daily intake (EDI) of Zn. Conversely, it increased grain As concentration and As EDI. Soil Zn application mitigated the negative effects of As on dry matter yields of both cultivars while simultaneously enhancing grain Zn concentration and Zn EDI. On average, Zn application increased grain Zn concentration by 114% compared to no Zn application. Additionally, Zn application decreased grain As concentration at all As levels. In conclusion, this study suggests that applying Zn to Zn-biofortified wheat irrigated with As-contaminated water can mitigate the toxic effects of As on wheat. It increase Zn concentration and decrease As concentration in wheat grains, which is vital for enhancing grain quality for human consumption.

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土壤施锌和砷污染灌溉条件下小麦籽粒中的砷和锌浓度

灌溉水中砷（As）含量超过允许值会导致小麦籽粒中的砷含量达到有毒水平，从而增加人类的健康风险。在这项研究中，两个锌（Zn）生物强化小麦（Triticum aestivum L.）栽培品种（Akbar-2019 和 Zincol-2016）在两种锌施用率（0 和 8 mg Zn kg-1）和三种砷含量（蒸馏水对照、100 和 1000 µg As L-1）的灌溉水中进行了盆栽。用砷污染的水灌溉会降低干物质产量、谷物磷（P）和锌的浓度以及锌的估计日摄入量（EDI）。相反，却增加了谷物的砷浓度和砷的 EDI。土壤施锌减轻了砷对两个品种干物质产量的负面影响，同时提高了谷物的锌浓度和锌的 EDI。与不施锌相比，施锌可使谷物锌浓度平均提高 114%。此外，在所有砷浓度水平下，施锌都能降低谷物的砷浓度。总之，这项研究表明，在用砷污染的水灌溉的锌生物强化小麦中施用锌可以减轻砷对小麦的毒性影响。它能提高小麦籽粒中的锌浓度，降低砷浓度，这对提高供人类食用的谷物品质至关重要。

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来源期刊

Clean-soil Air Water 环境科学-海洋与淡水生物学

CiteScore

2.80

自引率

5.90%

发文量

审稿时长

3.6 months

期刊介绍： CLEAN covers all aspects of Sustainability and Environmental Safety. The journal focuses on organ/human--environment interactions giving interdisciplinary insights on a broad range of topics including air pollution, waste management, the water cycle, and environmental conservation. With a 2019 Journal Impact Factor of 1.603 (Journal Citation Reports (Clarivate Analytics, 2020), the journal publishes an attractive mixture of peer-reviewed scientific reviews, research papers, and short communications. Papers dealing with environmental sustainability issues from such fields as agriculture, biological sciences, energy, food sciences, geography, geology, meteorology, nutrition, soil and water sciences, etc., are welcome.