A dataset of the distribution of aflatoxin-producing fungi in Japan

The dataset comprises georeferenced records of aflatoxin (AF)-producing fungi distribution across 33 of Japan’s 47 prefectures, compiled through a systematic literature review using sources such as Web of Science, CiNii Research, J-STAGE, AgriKnowledge, and the NARO Genebank. It focuses on fungi of the genus Aspergillus known for producing AF—a genotoxic and carcinogenic mycotoxin—and is intended to support research on how climate change may be influencing the spread of these fungi in Japan. The dataset serves as a valuable resource for meta-analyses and risk assessments related to AF contamination under changing environmental conditions.