Species of Colletotrichum on Agavaceae

• Published in: Mycological research 2006-12, Vol.110 (12), p.1395-1408
• Main Authors: Farr, David F., Aime, M. Catherine, Rossman, Amy Y., Palm, Mary E.
• Format: Article
• Language: English
• Subjects: Agave; Anthracnose; Asparagaceae; Base Sequence; Colletotrichum; Colletotrichum - classification; Colletotrichum - genetics; Colletotrichum - isolation & purification; Colletotrichum - ultrastructure; Colletotrichum agaves; Colletotrichum boninense; Colletotrichum dracaenophilum; Colletotrichum phormii; Colletotrichum rhodocyclum; DNA, Fungal - chemistry; DNA, Fungal - genetics; DNA, Ribosomal - chemistry; DNA, Ribosomal - genetics; Dracaena; Dracaena sanderiana; Genetic Variation; Glomerella; Glomerella cingulata; Glomerella phacidiomorpha; Glomerella phormii; host plants; internal transcribed spacers; Liliales; Microscopy, Fluorescence; Molecular phylogeny; Molecular Sequence Data; new combination; new species; Phylogeny; Plant Diseases - microbiology; plant pathogenic fungi; Plant pathology; Polymerase Chain Reaction; ribosomal DNA; Sequence Alignment; sequence analysis; Sequence Analysis, DNA; Taxonomy
• ISSN: 0953-7562; 1469-8102
• DOI: 10.1016/j.mycres.2006.09.001

Species of Colletotrichum cause diseases on a wide range of hosts, frequently infecting plants in the Agavaceae (monocotyledons: Liliales). Three species of Colletotrichum restricted to the Agavaceae were detected through morphological studies of specimens and molecular sequence analyses of the LSU of the nu-rDNA and the ITS region of the nu-rDNA from cultures. Colletotrichum agaves on Agave is fully described and illustrated. Colletotrichum dracaenophilum is described as a new species for isolates having long conidia and occurring on Dracaena sanderiana from China. Colletotrichum phormii and Glomerella phormii are determined to be the correct scientific names for the asexual and sexual states, respectively, of a species commonly referred to as C. rhodocyclum and G. phacidiomorpha occurring mainly on Phormium. In addition, C. gloeosporioides and C. boninense were isolated from plants in the Agavaceae. All species of Colletotrichum described on Agavaceae were evaluated based on type specimens. A key to the five species of Colletotrichum on Agavaceae is included. This paper includes one new species, Colletotrichum dracaenophilum, and three new combinations, Colletotrichum phormii, Glomerella phormii, and Phaeosphaeriopsis phacidiomorpha.