First report of Fusarium redolens causing root and bulb rot disease on Lanzhou lily (Lilium davidii var. unicolor) in China.
Lanzhou lily (Lilium davidii var. unicolor) with severe wilt symptoms, including root, bulb, and stem rots, with a progressive yellowing and wilting of leaves from the base, were observed in Gansu, China. The disease has resulted in serious loss of bulb production, especially in continuous cropping fields or soil with high moisture content. The causal pathogen was isolated and identified as Fusarium redolens based on morphological characteristics, molecular data (sequence analysis of the internal transcribed spacer region of the ribosomal DNA (ITS) and the translation elongation factor 1α (TEF-1α) gene) and pathogenicity tests. This is thought to be the first report F. redolens causing root and bulb rot on edible Lanzhou lily in China.