Department of Botany and Department of Biotechnology, Yeshwant Mahavidyalaya, Nanded Maharastra 431602
Online published on 9 January, 2018.
Bacterial blight of Rice caused by Xanthomonasoryzaepv. oryzae(Xoo) induces extensive reduction in yield of rice. The pathogen enters through the injury in the leaf tips and grows to be systemic leading to death of seedling. So far host plant resistance has been the effective control method of management of this disease. Over 30 resistance genes have been identified in rice genotypes worldwide. The elucidation of host pathogen interaction, culture filtrates were used to treat three rice varieties viz. Sugandha, (PBNR 87-B), Parag (PBNR), and PBNR 93-1. It was clear from the study that culture filtrate, heated culture filtrate and proteinase K treated culture filtrate induced typical bacterial blight symptoms on rice varieties tested. The phytotoxicity was evident with heated culture filtrate on both rice varieties. The extraction of culture filtrate with ethyl acetate lead to reduction of the phytotoxicity.
Bacterial blight of Rice, Xanthomonasoryzaepv. Oryzae
