Q92: Pear decline caused by 'Candidatus Phytoplasma pyri' is transmitted by: - Entomology, Beneficial Insects, Nematology & Pest Management - ICAR AIEEA PG Entomology 09 July 2023 (Shift 1) Paper | Agrigyan

Vector biology of fruit tree phytoplasmas:

• Pear decline is a serious disease of pears (Pyrus communis) caused by the wall-less prokaryotic phloem-limited bacterium 'Candidatus Phytoplasma pyri'.
• It is transmitted naturally by psyllids (jumping plant lice, Family Psyllidae), primarily Cacopsylla pyricola (pear psylla) and Cacopsylla pyri, in a persistent, propagative manner through phloem feeding.