Magnesium in Crop Production, Food Quality and Human Health
Crop and Pasture Science Special Issue 66(12)Edited by:
This Special Issue of Crop & Pasture Science shows that one of critical physiological roles of Mg in plants is the regulation of assimilate partitioning into sink organs such as roots and seeds.
How magnesium (Mg) supply in soils contributes to maintenance of good yields under various stressful environmental conditions, especially under soil acidity and aluminum toxicity was one of the key themes of the 2nd International Symposium on Magnesium in Crop Production, Food Quality and Human Health held in Sao Paulo, Brazil, in November 2014. A role of Mg in human nutrition, changes in Mg supply in the global food chain, and variation in Mg content were also discussed at the Symposium. + Full description
The symposium presentations published in this Special Issue of Crop & Pasture Science showed that one of critical physiological roles of Mg in plants is the regulation of assimilate partitioning into sink organs such as roots and seeds. It was also shown that Mg deficiency affects wheat yield by decreasing individual seed weight rather than seed number per spike. Magnesium has a role in protecting roots from oxidative stress caused by toxicity of heavy metal and Al. Limited transport of photoassimilates from shoots to roots and decreased H+-ATPase activity, needed for release of organic acid anions from roots to inactivate Al in the rhizosphere, make Mg-deficient plants highly susceptible to Al toxicity.
Concentration and content of Mg in various edible plant tissues and organs were discussed at the Symposium with respect to human and animal nutrition. Different plant species grown under the same conditions differ substantially in their shoot Mg concentrations.
These findings highlight importance of adequate content of Mg in food crops to meet the human demand for Mg. Future research on linking Mg nutrition of crops, pastures and animals with the human diet, health and well-being is seen as a high priority.
DetailsPaperback | January 2016 | $ 75.00
ISBN: CP66/12 | 100 pages
Publisher: CSIRO Publishing