For LAMP assay, fresh infected plant material, bacterial DNA, and serial bacterial dilutions as described above, were used for diagnosis. Bacterial ooze was also used from green house infected material by diluting into 25 ul of water. For sample preparation from infected tissues, the cambium layer was exposed and a sterile pipet tip was rubbed three times across the surface at the transition zone. The pipet tips were dipped into a 200 µl microfuge tube containing 25 ul of sterile water and the process was repeated three times. The resulting samples were lysed in the BioRanger at 95 °C for 5-10 min and samples were immediately cooled on ice. These samples served as DNA template for the LAMP reactions from live plant material. In addition, the quick DNA was extracted by boiling and centrifuging the samples as described earlier. The LAMP reaction mixture included: Isothermal enzyme mix (15 ul OptiGene)