The addition of genes for C4 photosynthesis into non-C4 plants, for example, gives us crops that are much more efficient at using water and nitrogen (see “Supercharged Photosynthesis”). But such advances are only worthwhile if they lead us to crops that yield well in the variable and unpredictable environments that we now face.
MIT's Technology Review
Clay, Sharon, "Pliable Plants" (2015). Agronomy, Horticulture and Plant Science Faculty Publications. 9.