Rice orange leaf phytoplasma

Phytoplasmas are intracellular obligate prokaryotes that lack cell walls and have very small genomes (680–1,600 kb). Many fungal, bacterial and viral diseases have been characterized and resistant breeding programme is progressing very well. Recently, on the basis of the symptoms and on 16SrDNA sequence identity and phylogenetic relationships the association of ‘Ca. P. asteris’ with Rice Orange Leaf phytoplasma disease in South India was confirmed. Rice orange leaf phytoplasma was characterized based on multiple gene systems.

11p caygaocaolon2 14-03-2020 10 1   Download

Based on the nature of symptoms, 16SrDNA sequence identity and phylogenetic relationships, the association of ‘Candidatus Phytoplasma asteris’ with Rice Orange Leaf (ROL) phytoplasma disease in South India was confirmed recently. This disease was transmitted by the Zigzag leafhopper, Recilia dorsalis as persistent manner in nature. The population fluctuation of hoppers played significant role in the incidence of rice orange leaf phytoplasma in rice ecosystem.

5p nguaconbaynhay1 04-12-2019 7 1   Download