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 ...

Certain microbes can denitrify nitrate explosives in the ... They engineered tobacco plants that express pentaerythritol tetranitrate reductase, a microbial enzyme capable of removing nitrates ...