Worldwide Genetic Diversity for Mineral Element Concentrations in Rice Grain

By S. Pinson, L. Tarpley, Wengui Yan, K. Yeater, Brett Lahner, Elena Yakubova, Xin-Yuan Huang, Min Zhang, M. Guerinot, D. Salt. 2015

176 citations recorded by the source corpus.

With the aim of identifying rice (Oryza spp.) germplasm having enhanced grain nutritional value, the mineral nutrient and trace element concentrations (or ionome) of whole (unmilled) grains from a set of 1763 rice accessions of diverse geographic and genetic origin were evaluated. Seed for analysis of P, Mg, K, S, Ca, As, Cd, Co, Cu, Fe, Mn, Mo, Ni, Rb, Sr, and Zn concentrations by inductively coupled plasma mass spectrometry was produced over 2 yr in Beaumont, TX, under both flooded and unflooded watering regimes. The distributions of all element concentrations analyzed were skewed toward higher concentration. A significant portion of this ionomic variation has a genetic basis (broad sense heritabilities 0.14–0.75), indicating an ability to breed for improved grain concentration of all elements except possibly Ni. Variation in grain elemental concentrations was not strongly associated with plant height, heading time, or grain shape, suggesting these physiological factors are not of primary importance in controlling ionomic variation in rice grain. Accessions high in specific elements were sometimes found to have similar genetic or geographic origins, suggesting they share a heritable mechanism underlying their enhanced ionomes. For example, accessions with high Ca, Mg, or K were more common in the indica than in the japonica subgroup; low As was most common among temperate japonica accessions; and several lines high in Mo originated in Malaysia or adjacent Brunei.

Subfields: Plant Science, Pollution

View Paper: https://www.semanticscholar.org/paper/eeb7d72184a7111737b379bf7c1edcb56de40a2f

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Plant Science

1. J. Ma
2. S. Clemens
3. F. Zhao
4. Zhong Tang
5. D. Gupta
6. S. Chatterjee
7. R. Moogouei
8. A. Mitra

In Pollution

1. J. Ma
2. F. Zhao
3. Zhong Tang
4. S. Clemens

Citations in the corpus

• Arsenic Accumulation in Rice and Probable Mitigation Approaches: A Review (2017, background): “More than 1700 rice varieties are investigated around the world for their differences in arsenic accumulation, and about 20 fold variations was found among various strains of rice [64].”
• The roles of membrane transporters in arsenic uptake, translocation and detoxification in plants (2020, background): “Large variations in the As accumulation ability exist within crop germplasm (Duan et al., 2017; Pinson et al., 2015).”
• Toxic Heavy Metal and Metalloid Accumulation in Crop Plants and Foods. (2016, background): “In the largest survey published to date, more than 1,700 rice accessions were cultivated over two years in flooded and nonflooded conditions (102).”