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

Agronomy

Matthias Wissuwa¹  Graham Lancaster²  Tobias Kretzschmar³  Terry J. Rose⁴  Lei Liu⁴ 

[1] Crop, Livestock and Environment Division, Japan International Research Centre for Agricultural Science, Tsukuba 305-8686, Ibaraki, Japan;Environmental Analysis Laboratories, Southern Cross University, Lismore 2480, NSW, Australia;Genotyping Services Laboratory, International Rice Research Institute (IRRI), DAPO BOX 7777, Metro Manila, Philippines;Southern Cross Plant Science, Southern Cross University, Lismore 2480, NSW, Australia;

关键词: iron;    lysophospholipids;    magnesium;    nitrogen;    nutrient harvest index;    Oryza sativa;    potassium;   

DOI  :  10.3390/agronomy6040052

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown