Aparición y evolución de la fotosíntesis C4

the photosynthesis type c4 had its origin 7-5 millions years ago in several genera of plants. the atmospheric diminution of co2 concentration leads to a concentrative mechanism. some studies of genes and enzymes than participate in this pathway shown several changes than have occurred in dna and proteins in order to adapt them for a new function, co2 concentrating mechanism. this mechanism avoid rubisco's oxygenase function.