First Report of Leaf Spot of Strobilanthes cusia Caused by Aspergillus niger in Guangdong, China
Strobilanthes cusia is a significant economic plant in China, valued for its medicinal properties and as a crucial raw material for industrial extraction of indigo pigment. In September 2025, a leaf spot disease was observed on mature, cultivated S. cusia plants in a farm located in Maoming City, Guangdong Province, Ch...