Changes in the composition of phytate, phosphorus and other cations in soybean seeds with maturity

Abstract

A field experiment was conducted to investigate the phytate, phosphorus (P), calcium (Ca), magnesium (Mg), potassium (K), iron (Fe), zinc (Zn) and manganese (Mn) contents during seed development and plant growth in soybean plants (Glycine max (L) Merr.). The amount of total P in plants increased with increasing plant dry weight. The seed P content increased sharply from anthesis, and the P distribution percentage in the seed reached 35% of the absorbed P at the full‐maturity stage. The P content in flowers was 5.62 g kg−1 dry matter, and that in the seed increased to 7.75 and 9.59 g kg−1 dry matter at 30 and 75 days after anthesis, respectively. The percentages of organic P and cellular P contents in the grain reached to 80–90% of the total P content at early immaturity stage, while it decreased with seed maturity. The percentage of phytic acid P in seeds to total P content was 68% at the full maturity stage. The phytate concentration negatively correlated with Ca, Mg, Zn, Mn and Fe concentrations in the seed; however, the total P concentrations in the seed correlated positively and the K concentration did not correlate with the phytate concentration. The Ca, Mg, Zn, Mn and Fe accumulated greatly at the early maturity stage of seeds; however, phytate accumulated with the increase in total P concentration with seed maturity.

Determination and inheritance of phytic acid as marker in diverse genetic group of bread wheat

“…Phytic acid contents can be decreased by fortification which changes oxidation state of Fe [5]. Phytic acid concentration is negatively correlated with Ca, Mg, Zn, Mn and Fe concentrations [6]. Phytic acid is the main source of phosphorus in cereal grains and in bakery products [7].…”

Isolation of Inositol Hexaphosphate (IHP)-Degrading Bacteria from Arbuscular Mycorrhizal Fungal Hyphal Compartments Using a Modified Baiting Method Involving Alginate Beads Containing IHP

“…The amount of IHP-containing beads was adjusted such that total P was equivalent to the amount of phytate P in 0.5 g of soybeans, and the amount of CaHPO 4 -containing beads was adjusted such that total P was equivalent to the amount of inorganic P in 0.5 g of soybeans. Phytate P in soybeans and buckwheat was measured as previously described ( 28 ). Arable soil was packed in mesh bags as soil inocula with alginate beads.…”