Abstract
Context Arsenic (As) is a noxious metalloid for plants, animals and humans. Elevated levels of As in soils may cause it to accumulate to above-permissible levels in wheat grains, posing a threat to human health. Moreover, vulnerable population groups in developing countries have inadequate dietary zinc (Zn) linked to cereal-based diets. Aims The present study evaluated the effect of soil Zn application on accumulation of As and Zn in grains of two Zn-biofortified wheat (Triticum aestivum L.) cultivars (Akbar-2019 and Zincol-2016). Methods Wheat plants were grown on an alkaline calcareous soil spiked with three levels of As (0, 5 and 25 mg kg−1). Before sowing, two rates of Zn (0 and 8 mg kg−1) were also applied to the soil. Key results Arsenic spiking in soil decreased plant dry matter yield, chlorophyll pigments, and phosphorus (P) and Zn accumulation, and increased As accumulation in wheat. By contrast, soil Zn application enhanced crop yield and increased P and Zn accumulation, with a simultaneous decrease in As accumulation in both cultivars. Compared with the Zn control, soil Zn application decreased grain As concentration by 26%, 30% and 32% for plants grown in soil spiked with 0, 5 and 25 mg As kg−1, respectively. Conclusions Applying Zn to As-spiked soil mitigates the harmful effects of As by increasing Zn and decreasing As concentrations in wheat, resulting in improved grain quality for human consumption. Implications Zinc application to crop plants should be recommended for addressing the health implications associated with As-contaminated crops and human Zn deficiency.
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Claims 10
Claim · model-written summary
Soil arsenic decreased wheat plant dry matter yield and chlorophyll pigments.
- Taxon
- wheat
Triticum aestivumt0 - Treatment
- Arsenic spiking in soile0
- Outcome
- plant dry matter yield, chlorophyll pigmentse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arsenic spiking in soil decreased plant dry matter yield, chlorophyll pigments”
t0“wheat cultivars”
Claim · model-written summary
Soil arsenic decreased phosphorus and zinc accumulation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- Arsenic spiking in soile0
- Outcome
- phosphorus (P) and Zn accumulatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Arsenic spiking in soil decreased plant dry matter yield, chlorophyll pigments, and phosphorus (P) and Zn accumulation”
t0“wheat cultivars”
Claim · model-written summary
Soil arsenic increased arsenic accumulation in wheat.
- Taxon
- wheatTriticum aestivume0
- Treatment
- Arsenic spiking in soilt0
- Outcome
- As accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased As accumulation in wheat”
t0“Arsenic spiking in soil”
Claim · model-written summary
Soil zinc enhanced wheat crop yield.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- soil Zn applicatione0
- Outcome
- crop yielde0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Zn application enhanced crop yield”
t0“wheat cultivars”
Claim · model-written summary
Soil zinc increased phosphorus and zinc accumulation.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- soil Zn applicatione0
- Outcome
- P and Zn accumulatione0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Zn application enhanced crop yield and increased P and Zn accumulation”
t0“wheat cultivars”
Claim · model-written summary
Soil zinc decreased arsenic accumulation in both cultivars.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- soil Zn applicatione0
- Outcome
- As accumulatione0
- Direction
- decreasee0
- Qualifier
- both cultivarse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Zn application enhanced crop yield and increased P and Zn accumulation, with a simultaneous decrease in As accumulation in both cultivars”
t0“wheat cultivars”
Claim · model-written summary
Soil zinc decreased grain arsenic concentration by 26% at 0 mg As kg−1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- soil Zn applicatione0
- Outcome
- grain As concentratione0
- Direction
- decreasede0
- Value
- 26%e0
- Qualifier
- 0, 5 and 25 mg As kg−1e0
- Comparator
- Zn controlt1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Zn application decreased grain As concentration by 26%, 30% and 32% for plants grown in soil spiked with 0, 5 and 25 mg As kg−1, respectively”
t0“wheat cultivars”
t1“Zn control”
Claim · model-written summary
Soil zinc decreased grain arsenic concentration by 30% at 5 mg As kg−1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- soil Zn applicatione0
- Outcome
- grain As concentratione0
- Direction
- decreasede0
- Value
- 30%e0
- Comparator
- Zn controlt1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Zn application decreased grain As concentration by 26%, 30% and 32% for plants grown in soil spiked with 0, 5 and 25 mg As kg−1, respectively”
t0“wheat cultivars”
t1“Zn control”
Claim · model-written summary
Soil zinc decreased grain arsenic concentration by 32% at 25 mg As kg−1.
- Taxon
- wheatTriticum aestivumt0
- Treatment
- soil Zn applicatione0
- Outcome
- grain As concentratione0
- Direction
- decreasede0
- Value
- 32%e0
- Comparator
- Zn controlt1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“soil Zn application decreased grain As concentration by 26%, 30% and 32% for plants grown in soil spiked with 0, 5 and 25 mg As kg−1, respectively”
t0“wheat cultivars”
t1“Zn control”
Claim · model-written summary
The authors recommend zinc application to crops affected by arsenic contamination and zinc deficiency.
- Taxon
- wheatTriticum aestivumt0
- Outcome
- Zinc application to crop plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Zinc application to crop plants should be recommended for addressing the health implications associated with As-contaminated crops and human Zn deficiency”
t0“wheat cultivars”
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