A new study from the University of Sao Paulo shows that the combined effects of elevated CO2, high temperatures, and drought could increase soybean production by 50% but significantly reduce seed quality. Researchers found that soybeans under this triple climate stress had 20% less starch and 6% less protein, with a surprising 175% increase in amino acid content. The study used AI predictive modeling based on experimentally verified dual-stress data to estimate the triple impact. While elevated CO2 alone can boost plant growth through a fertilizing effect, the combination with heat and drought creates complex metabolic deviations. The plant redirects carbon toward building cell walls instead of storing starch and protein in the seed. This matters because soybean is a major global crop for animal feed and food ingredients. Lower nutritional quality could affect both agricultural value and food security in a warming climate. The research highlights the importance of studying multiple climate stressors together rather than individually. The findings can help improve predictive models for assessing climate change impacts on global agriculture, which is directly relevant to carbon markets and climate adaptation strategies.
