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Background: In Asia, germ plasm exchange in different ecosystems, has been observed. This exchange causes movement of different pathogens. In present study, we worked on movement of Xanthomonas oryzae pv. oryzae (Xoo) causing bacterial blight of rice. In 1976, this disease was first recorded from Punjab (Pakistan) but the cultivars of that time showed resistance against bacterial blight. Then in 1984, the disease was seen on IRRI9. Tremendous increase of this pathogen has become prevalent due to increase in demand of Basmati 385 (cultivar), and now it is one of the most important rice diseases in Pakistan. Hypothesis of present study is “there is genetic diversity of Xoo in different rice growing areas of Punjab, Pakistan.”
Methods: By fingerprinting; the movement pattern of Xanthomonas oryzae pv. oryzae were searched out in present study. The IS1112; a repetitive element of Xanthomonas oryzae pv. oryzae was used to fingerprint twenty-one bacterial strains.
Results: We compared local strains with that of provided by IRRI Philippine (International Rice Research Institute, Philippine). The obtained clusters were correlated with regional differentiation.
Conclusion: Present reported work is the pioneer study (1998-2000) which clued the occurrence of regional movement of pathogen via germ plasm exchange. This study may also provide help to forensics to watch the bioterrorism.
Ishrat Aziz, Saadat Ali, Zia Rehman, Sheikh Riazuddin, Ahmad Ali Shahid. (2022) Biological movement of Xanthomonas oryzae pv. oryzae in Pakistan; A pioneer project of CEMB, Punjab, Pakistan, Advancements in Life Sciences, Volume 9, issue 2.
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