Distribution of the stable isotopes 57Fe and 68Zn in grain tissues of various wheat lines differing in their phytate content

Xue, Yuanchao; Xia, Haiyong; McGrath, Steve P.; Shewry, Peter R.; Zhao, Fang‐Jie

doi:10.1007/s11104-015-2582-6

Cited by 14 publications

(13 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Most of these studies reported positive correlations of the essential metal microelements Cu‐Fe‐Zn with grain protein content and S, and the essential metal macroelements Ca‐K‐Mg with P in cereal grains. Phytates serve as a major storage for Mg, Ca and K in seeds (Lott et al , ), although other metals also can be stored in combination with phytic acid (Xue et al , ), especially in wheat (Ficco et al , ). Moreover, we can assume that some negative correlations of K after adjustment for P concentration can result from the competition between divalent Mg and Ca with monovalent K (Lott et al , ).…”

Section: Discussionmentioning

confidence: 99%

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within the wheat grain ionome

et al. 2019

View full text Add to dashboard Cite

Dissection of the genetic basis of wheat ionome is crucial for understanding the physiological and biochemical processes underlying mineral accumulation in seeds, as well as for efficient crop breeding. Most of the elements essential for plants are metals stored in seeds as chelate complexes with phytic acid or sulfur-containing compounds. We assume that the involvement of phosphorus and sulfur in metal chelation is the reason for strong phenotypic correlations within ionome. Adjustment of element concentrations for the effect of variation in phosphorus and sulfur seed content resulted in drastic change of phenotypic correlations between the elements. The genetic architecture of wheat grain ionome was characterized by quantitative trait loci (QTL) analysis using a cross between durum and wild emmer wheat. QTL analysis of the adjusted traits and two-trait analysis of the initial traits paired with either P or S considerably improved QTL detection power and accuracy, resulting in the identification of 105 QTLs and 617 QTL effects for 11 elements. Candidate gene search revealed some potential functional associations between QTLs and corresponding genes within their intervals. Thus, we have shown that accounting for variation in P and S is crucial for understanding of the physiological and genetic regulation of mineral composition of wheat grain ionome and can be implemented for other plants.

show abstract

Section: Discussionmentioning

confidence: 99%

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within the wheat grain ionome

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Calcium is predominantly stored in the bran, which may be due to its function in structural maintenance. However, a large proportion of Se and Cd accumulate in the endosperm (Wang et al, 2011; Xue et al, 2015).…”

mentioning

confidence: 99%

Mineral Elements Bioavailability in Milling Fractions of Wheat Grain Response to Zinc and Nitrogen Application

Zhang

Wang

et al. 2019

Agronomy Journal

View full text Add to dashboard Cite

A field experiment was conducted in a high‐yield region in North China to estimate the effect of Zn and N fertilization on mineral element distribution and bioavailability in eight milling fractions of wheat grain (Triticum aestivum L.), which included bran, shorts, break (B1, B2, and B3) and reduction (R1, R2, and R3). The results indicated that foliar Zn decreased Ca and Mn concentration in wheat grain averagely by 4.3 and 6.8%, respectively, but increased Zn by 42.6%. Soil N application improved N, Ca, Cu, Fe, and Zn concentration by 38.9, 10.5, 19.95, 7.0, and 24.4%, respectively. All elements, N, P, K, Ca, Mg, Cu, Mn, Fe, and Zn, were mostly located in bran and shorts. Foliar Zn significantly decreased the accumulation of Mn in bran, shorts, and B2, and increased Zn in each fraction, but did not influence the distribution of Mn and Zn among the eight fractions. Nitrogen application increased the accumulation of all elements in shorts, and altered the distribution in wheat grain. Both measures improved the bioavailability of Zn in B3, R1, R2, and reduction, but did not affect that in bran and shorts. Foliar Zn and N application increased total daily absorbed Zn in flour by 66.0 and 48.9%, and grain by 32.0 and 28.4%, respectively. The concentration of N in wheat grains was positively correlated with Ca, Cu, Fe, and Zn. No correlation was found between Zn and Fe concentration. These results are relevant to agronomic management strategies to improve the element nutrition of wheat grain. Core Ideas Foliar Zn decreases Mn accumulation in bran, shorts, and B2 and increased Zn in each fraction. Soil N application increased accumulation of all elements in shorts, Cu, and Fe in bran but decreased P and K in bran fraction. Zinc bioavailability was higher in break and reduction, and improved by foliar Zn and soil N application. Nitrogen concentration was positively correlated with Ca, Cu, Fe, and Zn in wheat grains. Zinc concentration was not correlated with Fe in wheat grains.

show abstract

“…Most of these studies reported positive associations of the essential metal microelements- Cu-Fe-Zn with GPC and S, and the essential metal macroelements Ca-K-Mg with P in cereal grains. Phytates serve as a major storage for Mg, Ca and K in seeds (Lott et al , 2000), although other metals also can be stored in combination with phytic acid (Xue et al , 2015), especially in wheat (Ficco et al , 2009). Moreover, we can assume that some negative associations of K after adjustment for P concentration can result from the competition between divalent Mg and Ca with monovalent K (Lott et al , 1985).…”

Section: Discussionmentioning

confidence: 99%

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within wheat grain ionome

Fatiukha

Klymiuk

Peleg

et al. 2019

Preprint

View full text Add to dashboard Cite

Summary Dissection of the genetic basis of wheat ionome is crucial for understanding the physiological and biochemical processes underlying mineral accumulation in seeds, as well as for efficient crop breeding. Most of the elements essential for plants are metals stored in seeds as chelate complexes with phytic acid or sulfur‐containing compounds. We assume that the involvement of phosphorus and sulfur in metal chelation is the reason for strong phenotypic correlations within ionome. Adjustment of element concentrations for the effect of variation in phosphorus and sulfur seed content resulted in drastic change of phenotypic correlations between the elements. The genetic architecture of wheat grain ionome was characterized by quantitative trait loci (QTL) analysis using a cross between durum and wild emmer wheat. QTL analysis of the adjusted traits and two‐trait analysis of the initial traits paired with either P or S considerably improved QTL detection power and accuracy, resulting in the identification of 105 QTLs and 617 QTL effects for 11 elements. Candidate gene search revealed some potential functional associations between QTLs and corresponding genes within their intervals. Thus, we have shown that accounting for variation in P and S is crucial for understanding of the physiological and genetic regulation of mineral composition of wheat grain ionome and can be implemented for other plants.

show abstract

Distribution of the stable isotopes 57Fe and 68Zn in grain tissues of various wheat lines differing in their phytate content

Cited by 14 publications

References 48 publications

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within the wheat grain ionome

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within the wheat grain ionome

Mineral Elements Bioavailability in Milling Fractions of Wheat Grain Response to Zinc and Nitrogen Application

Variation in phosphorus and sulfur content shapes the genetic architecture and phenotypic associations within wheat grain ionome

Contact Info

Product

Resources

About