A disease caused by a mycoplasmalike organism. The causal agent is restricted in the cells of the phloem sieve tubes and is vectored by leafhoppers. The disease is characterised by short, malformed leaves, the edges of leaves are serrated and chlorotic, and the leaf tips are twisted. At the later stage, the leaves turn yellow-orange beginning at the tip. Leaves may become entirely orange, roll inward and dry out.