Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain
Agronomic biofortification of crops is a promising approach that can improve the nutritional value of staple foods by alleviating dietary micronutrient deficiencies. Iodine deficiency is prevalent in many countries, including Australia, but it is not clear what foliar application strategies will be...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-09-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2023.1246945/full |
| _version_ | 1797679224902909952 |
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| author | Esther Magor Matthew Deas Wilson Henri Wong Tom Cresswell José Tonatiuh Sánchez-Palacios Richard William Bell Richard William Bell Beth Penrose |
| author_facet | Esther Magor Matthew Deas Wilson Henri Wong Tom Cresswell José Tonatiuh Sánchez-Palacios Richard William Bell Richard William Bell Beth Penrose |
| author_sort | Esther Magor |
| collection | DOAJ |
| description | Agronomic biofortification of crops is a promising approach that can improve the nutritional value of staple foods by alleviating dietary micronutrient deficiencies. Iodine deficiency is prevalent in many countries, including Australia, but it is not clear what foliar application strategies will be effective for iodine fortification of grain. This study hypothesised that combining adjuvants with iodine in foliar sprays would improve iodine penetration in wheat, leading to more efficient biofortification of grains. The glasshouse experiment included a total of nine treatments, including three reference controls: 1) Water; 2) potassium iodate (KIO3) and 3) potassium chloride (KCl); and a series of six different non-ionic surfactant or oil-based adjuvants: 4) KIO3 + BS1000; 5) KIO3 + Pulse® Penetrant; 6) KIO3 + Uptake®; 7) KIO3 + Hot-Up®; 8) KIO3 + Hasten® and 9) KIO3 + Synerterol® Horti Oil. Wheat was treated at heading, and again during the early milk growth stage. Adding the organosilicon-based adjuvant (Pulse®) to the spray formulation resulted in a significant increase in grain loading of iodine to 1269 µg/kg compared to the non-adjuvant KIO3 control at 231µg/kg, and the water and KCl controls (both 51µg/kg). The second most effective adjuvant was Synerterol® Horti Oil, which increased grain iodine significantly to 450µg/kg. The Uptake®, BS1000, Hasten®, and Hot-Up® adjuvants did not affect grain iodine concentrations relative to the KIO3 control. Importantly, iodine application and the subsequent increase in grain iodine had no significant effects on biomass production and grain yield relative to the controls. These results indicate that adjuvants can play an important role in agronomic biofortification practices, and organosilicon-based products have a great potential to enhance foliar penetration resulting in a higher translocation rate of foliar-applied iodine to grains, which is required to increase the iodine density of staple grains effectively. |
| first_indexed | 2024-03-11T23:11:24Z |
| format | Article |
| id | doaj.art-4a7e44fbbbaa451f95ff5ffc18971a86 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-03-11T23:11:24Z |
| publishDate | 2023-09-01 |
| publisher | Frontiers Media S.A. |
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| series | Frontiers in Plant Science |
| spelling | doaj.art-4a7e44fbbbaa451f95ff5ffc18971a862023-09-21T08:30:35ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2023-09-011410.3389/fpls.2023.12469451246945Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grainEsther Magor0Matthew Deas Wilson1Henri Wong2Tom Cresswell3José Tonatiuh Sánchez-Palacios4Richard William Bell5Richard William Bell6Beth Penrose7Tasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaTasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaAustralian Nuclear Science and Technology Organisation, Sydney, NSW, AustraliaAustralian Nuclear Science and Technology Organisation, Sydney, NSW, AustraliaCentre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA, AustraliaCentre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Murdoch, WA, AustraliaSoilsWest, Murdoch University, Murdoch, WA, AustraliaTasmanian Institute of Agriculture, University of Tasmania, Hobart, TAS, AustraliaAgronomic biofortification of crops is a promising approach that can improve the nutritional value of staple foods by alleviating dietary micronutrient deficiencies. Iodine deficiency is prevalent in many countries, including Australia, but it is not clear what foliar application strategies will be effective for iodine fortification of grain. This study hypothesised that combining adjuvants with iodine in foliar sprays would improve iodine penetration in wheat, leading to more efficient biofortification of grains. The glasshouse experiment included a total of nine treatments, including three reference controls: 1) Water; 2) potassium iodate (KIO3) and 3) potassium chloride (KCl); and a series of six different non-ionic surfactant or oil-based adjuvants: 4) KIO3 + BS1000; 5) KIO3 + Pulse® Penetrant; 6) KIO3 + Uptake®; 7) KIO3 + Hot-Up®; 8) KIO3 + Hasten® and 9) KIO3 + Synerterol® Horti Oil. Wheat was treated at heading, and again during the early milk growth stage. Adding the organosilicon-based adjuvant (Pulse®) to the spray formulation resulted in a significant increase in grain loading of iodine to 1269 µg/kg compared to the non-adjuvant KIO3 control at 231µg/kg, and the water and KCl controls (both 51µg/kg). The second most effective adjuvant was Synerterol® Horti Oil, which increased grain iodine significantly to 450µg/kg. The Uptake®, BS1000, Hasten®, and Hot-Up® adjuvants did not affect grain iodine concentrations relative to the KIO3 control. Importantly, iodine application and the subsequent increase in grain iodine had no significant effects on biomass production and grain yield relative to the controls. These results indicate that adjuvants can play an important role in agronomic biofortification practices, and organosilicon-based products have a great potential to enhance foliar penetration resulting in a higher translocation rate of foliar-applied iodine to grains, which is required to increase the iodine density of staple grains effectively.https://www.frontiersin.org/articles/10.3389/fpls.2023.1246945/fullbiofortificationnutrient deficiencyiodinewheat grainadjuvantsorganosilicon surfactants |
| spellingShingle | Esther Magor Matthew Deas Wilson Henri Wong Tom Cresswell José Tonatiuh Sánchez-Palacios Richard William Bell Richard William Bell Beth Penrose Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain Frontiers in Plant Science biofortification nutrient deficiency iodine wheat grain adjuvants organosilicon surfactants |
| title | Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain |
| title_full | Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain |
| title_fullStr | Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain |
| title_full_unstemmed | Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain |
| title_short | Selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat (Triticum aestivum L.) grain |
| title_sort | selected adjuvants increase the efficacy of foliar biofortification of iodine in bread wheat triticum aestivum l grain |
| topic | biofortification nutrient deficiency iodine wheat grain adjuvants organosilicon surfactants |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2023.1246945/full |
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