Abstract
Beach spider lily (Hymenocallis littoralis) is indigenous to Latin America and has been widely distributed in most of tropical countries as a regular garden plant known for its attractive flowers. In February 2022, characteristic anthracnose symptoms were observed on the leaves of spider lilies at the gardens in Bangalore, India. The associated pathogen was isolated, purified and identified as Colletotrichum sp. Phylogenetic analysis of concatenated sequence alignment of internal transcribed spacer (ITS) region, glyceraldehyde-3-phosphate dehydrogenase (GAPDH), actin (ACT) and histone (H3) genes supported by cultural morphological characteristics revealed Colletotrichum siamense as causal agent. Pathogenicity test combined with pathogen re-isolation and identification was carried out to validate Koch's postulates. To the best of our knowledge, this is the first report of anthracnose caused by C. siamense on H. littoralis in India.
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