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The mycorrhizal pathway of zinc uptake contributes to zinc accumulation in barley and wheat grain.
BMC Plant Biol. 2019 Apr 10; 19(1):133.BP

Abstract

BACKGROUND

Increasing zinc (Zn) concentrations in crops is important for alleviation of human Zn deficiency. Arbuscular mycorrhizal fungi (AMF) contribute to plant Zn uptake, but their contribution to Zn in the edible portion of crops has not yet been investigated. This study aimed to quantify the mycorrhizal pathway of Zn uptake into grain of wheat and barley under varying soil Zn availabilities. Bread wheat (Triticum aestivum) and barley (Hordeum vulgare) were grown in pots with a hyphal compartment containing 65Zn. Plants were inoculated with Rhizophagus irregularis and grown at three soil Zn concentrations. Radioactive Zn in grain and straw was measured and the contribution of AMF to Zn uptake was calculated.

RESULTS

The mycorrhizal pathway of Zn uptake contributed up to 24.3% of total above-ground Zn in wheat, and up to 12.7% of that Zn in barley. The greatest contribution by the mycorrhizal pathway was observed in barley at the lowest Zn addition, and in wheat at the highest one. In addition, grain yield of bread wheat was increased by AMF.

CONCLUSIONS

These results suggest that AMF have a substantial role in uptake of Zn into cereals, and the proportional contribution by the MPU is dependent on plant species, as well as available soil Zn.

Links

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Authors+Show Affiliations

Coccina A
Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy.
Cavagnaro TR
The School of Agriculture, Food and Wine, and the Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, South Australia, 5064, Australia.
Pellegrino E
Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy.
Ercoli L
Institute of Life Sciences, Scuola Superiore Sant'Anna, Piazza Martiri della Libertà 33, 56127, Pisa, Italy.
McLaughlin MJ
The School of Agriculture, Food and Wine, and the Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, South Australia, 5064, Australia.
Watts-Williams SJ
The School of Agriculture, Food and Wine, and the Waite Research Institute, The University of Adelaide, PMB 1, Glen Osmond, South Australia, 5064, Australia. stephanie.watts-williams@adelaide.edu.au. Australian Research Council Centre of Excellence in Plant Energy Biology, The University of Adelaide, Glen Osmond, South Australia, Australia. stephanie.watts-williams@adelaide.edu.au.

MeSH

Edible GrainHordeumMycorrhizaeSoilTriticumZinc

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30967108

Citation

Coccina, Antonio, et al. "The Mycorrhizal Pathway of Zinc Uptake Contributes to Zinc Accumulation in Barley and Wheat Grain." BMC Plant Biology, vol. 19, no. 1, 2019, p. 133.
Coccina A, Cavagnaro TR, Pellegrino E, et al. The mycorrhizal pathway of zinc uptake contributes to zinc accumulation in barley and wheat grain. BMC Plant Biol. 2019;19(1):133.
Coccina, A., Cavagnaro, T. R., Pellegrino, E., Ercoli, L., McLaughlin, M. J., & Watts-Williams, S. J. (2019). The mycorrhizal pathway of zinc uptake contributes to zinc accumulation in barley and wheat grain. BMC Plant Biology, 19(1), 133. https://doi.org/10.1186/s12870-019-1741-y
Coccina A, et al. The Mycorrhizal Pathway of Zinc Uptake Contributes to Zinc Accumulation in Barley and Wheat Grain. BMC Plant Biol. 2019 Apr 10;19(1):133. PubMed PMID: 30967108.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The mycorrhizal pathway of zinc uptake contributes to zinc accumulation in barley and wheat grain. AU - Coccina,Antonio, AU - Cavagnaro,Timothy R, AU - Pellegrino,Elisa, AU - Ercoli,Laura, AU - McLaughlin,Michael J, AU - Watts-Williams,Stephanie J, Y1 - 2019/04/10/ PY - 2018/08/23/received PY - 2019/03/27/accepted PY - 2019/4/11/entrez PY - 2019/4/11/pubmed PY - 2019/4/23/medline KW - Arbuscular mycorrhizal fungi KW - Barley (Hordeum vulgare) KW - Radioisotope tracing KW - Wheat (Triticum aestivum) KW - Yield KW - Zinc nutrition SP - 133 EP - 133 JF - BMC plant biology JO - BMC Plant Biol VL - 19 IS - 1 N2 - BACKGROUND: Increasing zinc (Zn) concentrations in crops is important for alleviation of human Zn deficiency. Arbuscular mycorrhizal fungi (AMF) contribute to plant Zn uptake, but their contribution to Zn in the edible portion of crops has not yet been investigated. This study aimed to quantify the mycorrhizal pathway of Zn uptake into grain of wheat and barley under varying soil Zn availabilities. Bread wheat (Triticum aestivum) and barley (Hordeum vulgare) were grown in pots with a hyphal compartment containing 65Zn. Plants were inoculated with Rhizophagus irregularis and grown at three soil Zn concentrations. Radioactive Zn in grain and straw was measured and the contribution of AMF to Zn uptake was calculated. RESULTS: The mycorrhizal pathway of Zn uptake contributed up to 24.3% of total above-ground Zn in wheat, and up to 12.7% of that Zn in barley. The greatest contribution by the mycorrhizal pathway was observed in barley at the lowest Zn addition, and in wheat at the highest one. In addition, grain yield of bread wheat was increased by AMF. CONCLUSIONS: These results suggest that AMF have a substantial role in uptake of Zn into cereals, and the proportional contribution by the MPU is dependent on plant species, as well as available soil Zn. SN - 1471-2229 UR - https://www.unboundmedicine.com/medline/citation/30967108/The_mycorrhizal_pathway_of_zinc_uptake_contributes_to_zinc_accumulation_in_barley_and_wheat_grain_ DB - PRIME DP - Unbound Medicine ER -