Little leaf in brinjal is caused by

Little leaf in brinjal is caused by Mycoplasma.
Little leaf of brinjal or eggplant (Solanum melongena L.) is one of the most serious diseases of brinjal in the areas of its cultivation.
The disease is caused by a plant pathogenic mollicute, Phytoplasma (earlier known as a mycoplasma-like organism or MLO) and is transmitted by the insect vector, Hishimonus phycitis which belongs to the group of leafhoppers.
Symptoms of the disease include the shortening of the petioles and the production of leaves that are much smaller in size. Petioles are so short that leaves seem to be glued to the stem. They become soft and yellow. Affected plants do not bear any flowers or fruits if infection is in the early stages of plant growth.