LAUSR

Fatsia japonica (synonym Aralia japonica Thunb.), which belongs to the family Araliaceae (Lee et al. 2008), is valued in both landscape and interior decoration in South China. In addition, F. japonica has potential medicinal uses (Ye et al. 2014; Yu et al. 2014). In September 2015, leaf spot symptoms were observed on leaves in Fujian Province, China. The disease incidence was between 50%-80% in three commercial nurseries, which had about 15 acres per commercial nursery. Early symptoms appeared as small, slightly sunken, brown spots. With expansion, lesions became tawny in the center, dark brown at the margin and bordered by a tan halo, water-soaked, obvious warts on back and cracks in the centre of the lesions. Ultimately, severely infected leaves wilted and died. Symptomatic leaves were cut into 5- × 5-mm slices, dipped in 75% (v/v) alcohol for 30 s, then in 0.1% (w/v) mercuric chloride solution for 90 s. Samples were then rinsed three times in sterilized water, placed on PDA. Six Colletotrichum-like iso...