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Elucidating Kinetic Of Xanthomonas Oryzae Infection in Drought Tolerance
Rice, Mr219-4
Hani Shafiqah Binti Shamsudin
Supervisor: Dr.Muhamad Fairus Bin Noor Hassim
Co-Supervisor: Prof.Dr.Aziz Bin Ahmad
Bachelor of Science (Biological Sciences)
School of Fundamental Science
Rice (Oryza sativa) is a primary source of carbohydrates and cultivated in tropical and
subtropical region thus prone to abiotic and biotic stresses. In this study, pathology of
Xanthomonas oryzae infection during development of local drought tolerance paddy,
MR219-4 were investigated. The kinetic of X. oryzae infection, the morphology and
total fatty acid content was assessed in seedlings, vegetative and reproductive phases
of MR219-4. The results show that formation of bacterial colonies in the xylems but
did not cause significance differences in plant height, root length, biomass (except day
20 th ) and the fatty acid content between infected and non-infected paddies. Variance
analysis shows the infection causes decreased to fatty acid/weight variance in seedling
stage, while vice versa in the other phases. However, variance of dry-weight and
biomass is negatively correlated. This indicate MR219-4 respond to the infection is
deterministic during seedling but stochastic during vegetative associated with
resistancy to bacterial infection.
361 | U M T U N D E R G R A D U A T E R E S E A R C H D A Y 2018