Abstract
Wheat common bunt caused by Tilletia laevis (Kühn) and T. caries (Bjerk.) Wint., is one of the world's most destructive diseases (He et al., 2022). In June 2022, we observed wheat common bunt symptoms in ten fields of city Mingora in Swat District, Khyber Pakhtunkhwa, Pakistan (35.2227°N, 72.4258°E) with spring cultivar Galaxy 2013. The corresponding disease heads were collected to isolate and characterized the causal agent of wheat common bunt. Teliospores morphology, germination, and disease symptoms revealed that fungal isolates belong to Tilletia laevis, which cause common bunt disease of wheat. After Koch's postulates, the artificially inoculated plants showed similar symptoms to those observed in the fields with same teliospores morphology and germination. Tilletia laevis was also confirmed through molecular characterization using sequence characterized amplification region (SCAR) markers specific for T. laevis and obtained 660 bp bands from leaves, stem and heads from artificially inoculated plants. Therefore, to the best of our knowledge, this is the first report of T. laevis causing common bunt in Mingora, Swat, Khyber Pakhtunkhwa, Pakistan.
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