Yellow and green streaks seen on the leaves of maize are not just unique; they’re “psychedelic.” The coloring is due to genes that are known as Psychedelic, and these genes may play a role in altering plant yields.  Plants with a yellow- and green-streaked leaf phenotype have a mutation in genes responsible for carbohydrate transport. Researchers from Pennsylvania State University found two genes in these plants that contribute to the distinctive coloring of the leaves.

The two “psychedelic” genes that the scientists discovered not only influence the color of the leaves, but they also work together to move carbon throughout the plant. Carbohydrate transport is crucial in plants as it allows the proper distribution of nutrients from the roots to the flowers, meaning that these two genes are significant in plant growth and development. Careful manipulation of this pathway could yield great results in corn and other crops. Manipulating the pathway can bring about an increased efficiency in the production of biofuels by increasing corn biomass, while alteration in the pathways of other plants could lead to a multitude of benefits, such as drought-resistant plants or greater food production.

Discussion Question: What benefits (or consequences) can you foresee from the manipulation of “psychedelic” genes?

News Article: http://www.sciencedaily.com/releases/2010/06/100607142215.htm

Journal Article: http://www.sciencedaily.com/releases/2010/06/100607142215.htm