First report of Laetisaria fuciformis causing red thread on seashore paspalum (Paspalum vaginatum) in south China.
In April 2010, circular or irregular pink patches ranging from 5 to 50 cm in diameter were observed in the golf course fairway and rough established with P. vaginatum cv. Salam on two golf courses in Haikou, Hainan Province, China. When morning dew was present or rainfall occurred, a pink layer of gelatinous fungal growth could be observed on leaves and sheaths. The green leaves of infected plants initially became water-soaked, then tan to bleached, shrivelled, and infested with pink or reddish, gelatinous, stranded hyphae. The hyphae matted together, then formed thread-like or antler-like stromata from the tips of blighted leaves. Two isolates from each golf course were collected. Sequences of mitochondrial small subunit ribosomal RNA (mt-SSU) were amplified from the two isolates by primers MS1 and MS2, and the sequences showed 99% similarity with L. fuciformis from the NCBI database (accession no. AY293232). This is thought to be the first report of L. fuciformis causing red thread on P. vaginatum or from any host plant in China.