Responses of rice to chronic and acute iron toxicity: genotypic differences and biofortification aspects

Frei, Michael; Tetteh, Richmond Narh; Razafindrazaka, Ando; Fuh, Michael Apolonius; Wu, Lin-Bo; Becker, M.

doi:10.1007/s11104-016-2918-x

Cited by 32 publications

(33 citation statements)

References 36 publications

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“…Yet, agronomic biofortification conducted on a large scale also has some risks related to the variability of micronutrient uptake, which cannot be easily standardized due to the variable interactions between genotypes and environments, as well as to the interactions among nutrients during uptake. Repeated supplemental fertilization of the soil with metals like Fe and Zn can pose environmental and health risks due to their potential leaching into the ground water or the accumulation in the soil or in the plant tissues at excessive levels that can be toxic for the plants and other living organisms, as well as for the consumers [11,17,44]. From this perspective, soilless growing systems combined with customized nutrient solutions of known concentrations could allow a standardization of the process of biofortification and fine control of the product quality, while avoiding or minimizing some of the risks associated with agronomic biofortification of soil grown crops [45][46][47][48].…”

Section: Introductionmentioning

confidence: 99%

Zinc and Iron Agronomic Biofortification of Brassicaceae Microgreens

et al. 2019

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Insufficient or suboptimal dietary intake of iron (Fe) and zinc (Zn) represent a latent health issue affecting a large proportion of the global population, particularly among young children and women living in poor regions at high risk of malnutrition. Agronomic crop biofortification, which consists of increasing the accumulation of target nutrients in edible plant tissues through fertilization or other eliciting factors, has been proposed as a short-term approach to develop functional staple crops and vegetables to address micronutrient deficiency. The aim of the presented study was to evaluate the potential for biofortification of Brassicaceae microgreens through Zn and Fe enrichment. The effect of nutrient solutions supplemented with zinc sulfate (Exp-1; 0, 5, 10, 20 mg L −1 ) and iron sulfate (Exp-2; 0, 10, 20, 40 mg L −1 ) was tested on the growth, yield, and mineral concentration of arugula, red cabbage, and red mustard microgreens. Zn and Fe accumulation in all three species increased according to a quadratic model. However, significant interactions were observed between Zn or Fe level and the species examined, suggesting that the response to Zn and Fe enrichment was genotype specific. The application of Zn at 5 and 10 mg L −1 resulted in an increase in Zn concentration compared to the untreated control ranging from 75% to 281%, while solutions enriched with Fe at 10 and 20 mg L −1 increased Fe shoot concentration from 64% in arugula up to 278% in red cabbage. In conclusion, the tested Brassicaceae species grown in soilless systems are good targets to produce high quality Zn and Fe biofortified microgreens through the simple manipulation of nutrient solution composition.

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Section: Introductionmentioning

confidence: 99%

Zinc and Iron Agronomic Biofortification of Brassicaceae Microgreens

et al. 2019

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“…Rice is one of the most important cereal crops in the world in terms of annual production and provides the staple food for around half of the a1111111111 a1111111111 a1111111111 a1111111111 a1111111111 (ferrous Fe) [23,24]. When excessive Fe is taken up into rice plants it leads to the formation of oxidative stress via the Fenton reaction [25], visible leaf bronzing symptoms [26], and eventually yield losses due to reduced growth and increased spikelet sterility [27,28]. Fe toxicity either occurs as an acute stress during the vegetative stage, when abundant amounts of Fe are mobilized from adjacent slopes due to heavy rainfall, or as a chronic stress with a more gradual build-up of high Fe concentrations in soil solution [23,28].…”

Section: Introductionmentioning

confidence: 99%

“…When excessive Fe is taken up into rice plants it leads to the formation of oxidative stress via the Fenton reaction [25], visible leaf bronzing symptoms [26], and eventually yield losses due to reduced growth and increased spikelet sterility [27,28]. Fe toxicity either occurs as an acute stress during the vegetative stage, when abundant amounts of Fe are mobilized from adjacent slopes due to heavy rainfall, or as a chronic stress with a more gradual build-up of high Fe concentrations in soil solution [23,28]. As farmers have very few management options to address Fe toxicity, the breeding of Fe tolerant rice varieties represents the most promising strategy of adapting rice production to high Fe soils.…”

Section: Introductionmentioning

confidence: 99%

“…These studies have revealed that Fe tolerance is a complex trait controlled by a large number of small and medium effect loci rather than large effect quantitative trait loci [26,30]. Moreover, the progress in breeding is hampered by limited consistency between different screening experiments and lack of genetic variation for certain desirable traits, such as the ability to translocate large amounts of Fe to the grains despite Fe toxicity [28]. Another limitation is that to date no RWR have been evaluated regarding their potential to contribute to Fe tolerance breeding.…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of rice wild relatives as a source of traits for adaptation to iron toxicity and enhanced grain quality

et al. 2020

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Rice wild relatives (RWR) constitute an extended gene pool that can be tapped for the breeding of novel rice varieties adapted to abiotic stresses such as iron (Fe) toxicity. Therefore, we screened 75 Oryza genotypes including 16 domesticated O. sativa genotypes, one O. glaberrima, and 58 RWR representing 21 species, for tolerance to Fe toxicity. Plants were grown in a semi-artificial greenhouse setup, in which they were exposed either to control conditions, an Fe shock during the vegetative growth stage (acute treatment), or to a continuous moderately high Fe level (chronic treatment). In both stress treatments, foliar Fe concentrations were characteristic of Fe toxicity, and plants developed foliar stress symptoms, which were more pronounced in the chronic Fe stress especially toward the end of the growing season. Among the genotypes that produced seeds, only the chronic stress treatment significantly reduced yields due to increases in spikelet sterility. Moreover, a moderate but non-significant increase in grain Fe concentrations, and a significant increase in grain Zn concentrations were seen in chronic stress. Both domesticated rice and RWR exhibited substantial genotypic variation in their responses to Fe toxicity. Although no RWR strikingly outperformed domesticated rice in Fe toxic conditions, some genotypes scored highly in individual traits. Two O. meridionalis accessions were best in avoiding foliar symptom formation in acute Fe stress, while an O. rufipogon accession produced the highest grain yields in both chronic and acute Fe stress. In conclusion, this study provides the basis for using interspecific crosses for adapting rice to Fe toxicity. , et al.(2020) Evaluation of rice wild relatives as a source of traits for adaptation to iron toxicity and enhanced grain quality. PLoS ONE 15(1): e0223086. https://doi.org/10.

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“…Moreover, high mineral concentrations can turn into stress conditions for plants. Excessive amounts of Fe can lead to phytotoxicity and growth inhibition, as demonstrated in many cultures such as rice [12][13][14], potato [15], wheat [16,17] and tea [18]. On the other hand, the spread of biofortified transgenic crops in many countries must undergo procrastinated procedures before its legal distribution to the public [1].…”

Section: Introductionmentioning

confidence: 99%

Iron Biofortification of Red and Green Pigmented Lettuce in Closed Soilless Cultivation Impacts Crop Performance and Modulates Mineral and Bioactive Composition

et al. 2019

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Consumer demand for vegetables of fortified mineral and bioactive content is on the rise, driven by the growing interest of society in fresh products of premium nutritional and functional quality. Biofortification of leafy vegetables with essential micronutrients such as iron (Fe) is an efficient means to address the human micronutrient deficiency known as hidden hunger. Morphometric analysis, lipophilic and hydrophilic antioxidant capacities of green and red butterhead lettuce cultivars in response to Fe concentration in the nutrient solution (0.015 control, 0.5, 1.0 or 2.0 mM Fe) were assessed. The experiment was carried out in a controlled-environment growth chamber using a closed soilless system (nutrient film technique). The percentage of yield reduction in comparison to the control treatment was 5.7%, 13.5% and 25.3% at 0.5, 1.0 and 2.0 mM Fe, respectively. Irrespective of the cultivar, the addition of 1.0 mM or 2.0 mM Fe in the nutrient solution induced an increase in the Fe concentration of lettuce leaves by 20.5% and 53.7%, respectively. No significant effects of Fe application on phenolic acids and carotenoid profiles were observed in green Salanova. Increasing Fe concentration in the nutrient solution to 0.5 mM triggered a spike in chlorogenic acid and total phenolics in red Salanova lettuce by 110.1% and 29.1% compared with the control treatment, respectively; moreover, higher accumulation of caffeoyl meso tartaric phenolic acid by 31.4% at 1.0 mM Fe and of carotenoids violaxanthin, neoxanthin and β-carotene by 37.0% at 2.0 mM Fe were also observed in red Salanova compared with the control (0.015 mM Fe) treatment. Red Salanova exhibited higher yield, P and K contents, ascorbic acid, phenolic acids and carotenoid compounds than green Salanova. The wok shows how nutrient solution management in soilless culture could serve as effective cultural practices for producing Fe-enriched lettuce of premium quality, notwithstanding cultivar selection being a critical underlying factor for obtaining high quality products.

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Responses of rice to chronic and acute iron toxicity: genotypic differences and biofortification aspects

Cited by 32 publications

References 36 publications

Zinc and Iron Agronomic Biofortification of Brassicaceae Microgreens

Zinc and Iron Agronomic Biofortification of Brassicaceae Microgreens

Evaluation of rice wild relatives as a source of traits for adaptation to iron toxicity and enhanced grain quality

Iron Biofortification of Red and Green Pigmented Lettuce in Closed Soilless Cultivation Impacts Crop Performance and Modulates Mineral and Bioactive Composition

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