Yet if cytokinins are entering the shoot systems they signal the auxiliary buds to start growing. Auxin cannot stop the buds from growing once it has begun. The coordination between auxin and cytokinins allow a balance of growth in the shoots and roots systems. When the roots become more extensive they cytokines level increase and signals the system to form more branches. Growth of the auxiliary buds are regulated by both auxin and cytokinins are still effected by one more hormone, ethylene.
Cytokinins can slow down the aging of some plant organs.
This may be because they are inhibiting protein breakdown, by stimulating RNA and protein synthesis. If you took leaves from a plant and dipped them into a cytokinins solutions, they would stay green much longer. Cytokinins is a hormone that acts as a retarding agent in plant growth. This hormone also works with auxin to stimulate cell division and more. Inc. PageWise makes no representations about the content published on this site.