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Agronomy 2016, 6(4), 52; doi:10.3390/agronomy6040052

Phosphorus Deficiency Alters Nutrient Accumulation Patterns and Grain Nutritional Quality in Rice

1
Southern Cross Plant Science, Southern Cross University, Lismore 2480, NSW, Australia
2
Southern Cross GeoScience, Southern Cross University, Lismore 2480, NSW, Australia
3
Genotyping Services Laboratory, International Rice Research Institute (IRRI), DAPO BOX 7777, Metro Manila, Philippines
4
Environmental Analysis Laboratories, Southern Cross University, Lismore 2480, NSW, Australia
5
Crop, Livestock and Environment Division, Japan International Research Centre for Agricultural Science, Tsukuba 305-8686, Ibaraki, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Gareth J. Norton
Received: 11 September 2016 / Revised: 21 October 2016 / Accepted: 24 October 2016 / Published: 28 October 2016
(This article belongs to the Special Issue Accumulation and Distribution of Elements in Crop Plants)
View Full-Text   |   Download PDF [194 KB, uploaded 28 October 2016]

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. View Full-Text
Keywords: iron; lysophospholipids; magnesium; nitrogen; nutrient harvest index; Oryza sativa; potassium iron; lysophospholipids; magnesium; nitrogen; nutrient harvest index; Oryza sativa; potassium
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rose, T.J.; Kretzschmar, T.; Liu, L.; Lancaster, G.; Wissuwa, M. Phosphorus Deficiency Alters Nutrient Accumulation Patterns and Grain Nutritional Quality in Rice. Agronomy 2016, 6, 52.

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