Cross sections of C3 rice (left) and C4 sorghum (right) shoots. Both grain crops evolved from a common ancestor, but sorghum evolved to photosynthesize more efficiently.

Researchers at the Salk Institute study how C4 photosynthesis could boost crop productivity and climate resilience.

2. Carbon dioxide gas exchange - Role of light in photosynthetic CO2 fixation and respiration in C3 and C4 plants (2 weeks). 3. Nitrate reductase activity in plants - Effects of nitrate availability ...