Title

Phosphorus deficiency alters nutrient accumulation patterns and grain nutritional quality in rice

Document Type

Article

Publication details

Rose, TJ, Kretzschmar, T, Liu, L, Lancaster, G & Wissuwa, M 2016, 'Phosphorus deficiency alters nutrient accumulation patterns and grain nutritional quality in rice', Agronomy, vol. 6, no. 4, pp. 52-60.

Article available on Open Access

Peer Reviewed

Peer-Reviewed

Abstract

The accumulation of biomass and mineral nutrients during the post-anthesis period was investigated in field-grown rice plants cultivated in phosphorus (P)-sufficient vs. P-deficient soil. Phosphorus deficiency reduced biomass accumulation by around 30%, and reduced the accumulation of all nutrients in aboveground plant biomass except sulfur (S) and copper (Cu). Ultimately, grain zinc (Zn), Cu, and calcium (Ca) concentrations were significantly higher in P-deficient plants, while grain magnesium (Mg) concentrations were significantly lower. While P deficiency caused a 40% reduction in the concentration of the anti-nutrient phytate in the grain, this was offset by a 40% reduction in grain starch lysophospholipids, which have positive benefits for human health and grain quality.