These plant hormones (also cytokinins) are found in higher plants, but also in algae, bacteria and fungi. In close interaction with other hormones such as auxins and abscisic acid, they regulate diverse plant growth and differentiation processes. These include above all the delay of the ageing process and the promotion of the plant's elongation growth. They activate cell division and the metabolic processes involved. This prevents the premature decomposition of chlorophyll and promotes the growth of flowers and shoots. See also under vines.