The three-dimensional distribution of minerals in potato tubers

Subramanian, Nithya; White, Philip J.; Broadley, Martin R.; Ramsay, Gavin

doi:10.1093/aob/mcr009

Cited by 107 publications

(98 citation statements)

References 55 publications

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“…Tuber mineral concentrations (including Ca and K) have been found to decrease following DM (starch) accumulation during tuber bulking (Kolbe and Stephan-Beckmann 1997). Within the tuber, Ca is concentrated around the periphery and decreases towards the centre (Subramanian et al 2011). …”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, K is mobile in the phloem and its concentration was found to be higher at the bud end than the stem end of the tuber (Subramanian et al 2011). Within cells K is required for many physiological functions, including osmoregulation, enzyme activation and membrane transport processes (White and Karley 2010).…”

Section: Discussionmentioning

confidence: 99%

“…On the other hand, neither Fe nor Ca have high phloem mobility (Kärenlampi and White, 2009), and the association of Fe and Ca might be due to the high entrapment of these minerals by periderm of the potato tuber, since the surface layers of potato tubers contain 55% and 34% of total tuber Fe and Ca concentrations, respectively (Subramanian et al 2011). …”

Section: Discussionmentioning

confidence: 99%

“…The freeze-dried samples were weighed to determine the dry matter content and then ground in a coffee blender (De'Longhi, Treviso, Italy) and were stored in re-sealable, air-tight polyethylene bags at -20°C until analysed for their mineral concentration. Tuber mineral concentrations were determined on acid-digested material using inductively coupled plasma mass spectrometry (ICP-MS; ELAN DRCe; PerkinElmer, Waltham, MA, USA), following the method reported by Subramanian et al (2011).…”

Section: Plant Materials and Mineral Analysesmentioning

confidence: 99%

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Variation in tuber mineral concentrations among accessions of Solanum species held in the Commonwealth Potato Collection

Subramanian

White

Broadley

et al. 2017

Genet Resour Crop Evol

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Abstract:The variation in tuber mineral concentrations amongst accessions of wild tuber-bearing Solanum species in the Commonwealth Potato Collection (CPC) was evaluated under greenhouse conditions. Selected CPC accessions, representing the eco-geographical distribution of wild potatoes, were grown to maturity in peat-based compost under controlled conditions. Tubers from five plants of each accession were harvested, bulked and their mineral composition analysed. Among the germplasm investigated, there was a greater range in tuber concentrations of some elements of nutritional significance to both plants and animals, such as (Ca, Fe and Zn; 6.7, 3.6, and 4.5-fold respectively) than others, such as (K, P and S; all <3-fold). Significant positive correlations were found between mean altitude of the species' range and tuber P, K, Cu and Mg concentrations. The amount of diversity observed in the CPC collection indicates the existence of wide differences in tuber mineral accumulation among different potato accessions. This might be useful in breeding for nutritional improvement of potato tubers. Powered by Editorial Manager® and ProduXion Manager® from Aries Systems Corporation AbstractThe variation in tuber mineral concentrations amongst accessions of wild tuber-bearing Solanum species in the Commonwealth Potato Collection (CPC) was evaluated under greenhouse conditions. Selected CPC accessions, representing the eco-geographical distribution of wild potatoes, were grown to maturity in peat-based compost under controlled conditions. Tubers from five plants of each accession were harvested, bulked and their mineral composition analysed. Among the germplasm investigated, there was a greater range in tuber concentrations of some elements of nutritional significance to both plants and animals, such as (Ca, Fe and Zn; 6.7, 3.6, and 4.5-fold respectively) than others, such as (K, P and S; all <3-fold). Significant positive correlations were found between mean altitude of the species' range and tuber P, K, Cu and Mg concentrations. The amount of diversity observed in the CPC collection indicates the existence of wide differences in tuber mineral accumulation among different potato accessions. This might be useful in breeding for nutritional improvement of potato tubers.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Plant Materials and Mineral Analysesmentioning

confidence: 99%

See 2 more Smart Citations

Variation in tuber mineral concentrations among accessions of Solanum species held in the Commonwealth Potato Collection

Subramanian

White

Broadley

et al. 2017

Genet Resour Crop Evol

Self Cite

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“…It is part of DNA, mRNA, ATP, and phospholipid structures in the cell membranes. It is also involved in biosynthesis and energy transference reactions, and affects the functional properties of the starch in which it is present (SUBRAMANIAN et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Influence of phosphate fertilization on phosphorus levels in foliage and tuber yield of the potato cv. Ágata

et al. 2013

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The healthy development of potato tubers requires, among other agricultural practices, proper fertilization. Potato crops require large amounts of nutrients, and therefore consume a large amount of fertilizer. In Brazilian soils, phosphorus is the nutrient that produces the highest response in tuber yields. The objective of this work was to study the effect of different levels of phosphorus fertilizer on the potato cultivar Ágata, by evaluating foliar levels of phosphorus and tuber yield under field conditions. The experiment was conducted at the Experimental Station of the Agriculture Cooperative Alto Paranaíba (COOPADAP) in Rio Paranaiba, Minas Gerais, during the 2008/2009 growing season. Treatments consisted of five doses of phosphorus (P 2 O 5 ) (0, 200, 400, 600, and 800 kg ha -1 ), with superphosphate as the source. The phosphorus content in the leaves of potato plants decreased with increasing doses of phosphorus in the soil. The crop showed an increase in tuber productivity with increasing doses of phosphorus, reaching a maximum estimated productivity of 49.11 t ha -1 with the application of approximately 700 kg ha -1 P 2 O 5 .

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Biofortification of Edible Crops

White

2016

Encyclopedia of Life Sciences

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Humans require sufficient amounts of at least 18 mineral elements for normal development and well‐being. Unfortunately, many people's diets lack sufficient iron, zinc, calcium, magnesium, iodine and selenium. Mineral malnutrition can be addressed by dietary diversification, mineral supplementation, food fortification or the biofortification of edible crops. Biofortification can be achieved by two complementary strategies. The ‘genetic’ strategy, which includes breeding and genetic manipulation of crops, aims not only to increase the acquisition of mineral elements and their accumulation in edible portions but also to improve their bioavailability by altering concentrations affecting uptake by the gut. The ‘agronomic’ strategy, which includes effective soil management and fertiliser applications, aims to increase the phytoavailability of mineral elements. Using these strategies, staple crops can be adequately biofortified with minerals currently lacking in people's diets. Furthermore, biofortification appears to be a cost‐effective approach to alleviating mineral malnutrition, reaching urban and rural populations in developed and developing nations. Key Concepts Human diets must supply sufficient quantities of 18 essential mineral elements. Many people's diets lack sufficient iron, zinc, calcium, magnesium, iodine or selenium. One strategy to combat mineral malnutrition in humans is biofortification of edible crops. Biofortification increases the bioavailable concentrations of essential minerals in produce. Agronomic biofortification strategies include effective soil management and fertiliser applications. Genetic biofortification strategies employ the selection, breeding or genetic manipulation of crops. Crop genotypes can be developed with greater acquisition and accumulation of minerals in edible portions. Crop genotypes can be developed with reduced concentrations of antinutrients, such as phytate or oxalate, or greater concentrations of promoter substances, such as ascorbate, β‐carotene, protein cysteine and various organic acids and amino acids, to improve the bioavailability of minerals. Biofortification is a cost‐effective strategy to alleviate mineral malnutrition and can reach both urban and rural populations in developed and developing nations.

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The three-dimensional distribution of minerals in potato tubers

Cited by 107 publications

References 55 publications

Variation in tuber mineral concentrations among accessions of Solanum species held in the Commonwealth Potato Collection

Variation in tuber mineral concentrations among accessions of Solanum species held in the Commonwealth Potato Collection

Influence of phosphate fertilization on phosphorus levels in foliage and tuber yield of the potato cv. Ágata

Biofortification of Edible Crops

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