Morpho-physiological characterization of bacterial grain rot in rice seed from Gowa Regency, South Sulawesi

Abstract Bacterial Grain Rot caused by Burkholderia glumae is an important disease of rice. In South Sulawesi, this seed-borne pathogen has been detected in several places. There were some reports from the farmers regarding rice yield loss due to disease. This study aimed isolate and characterize morpho-physiologically bacterium causing grain rot main rice-producing areas Gowa Regency, Sulawesi. Samples obtained 10 districts. Several grains isolated grown King’s B medium. Morphological characteristics determined color, form, edge, elevation colonies. KOH solubility, catalase test, anaerobic growth, toxoflavin production assay, fluorescent pigment, colony color on YDC medium performed determine physiological characteristics. 1 each area was found which similar morphological traits B. . Colonies that yellow, yellowish white, creamy grayish with a circular entire convex elevation. The result characterization showed all isolates tested positive for solubility test as well. All negative reactions 5 able produce yellow pigment (toxoflavin), so it can be concluded have characterized are presumably confirmed