Isolation and Identification of a Fusarium sp. from Laminaria Gametophyte Clones

Abstract:

A fungal strain (No. 059601016C) was obtained from Laminaria Gametophyte Clones. Growth states, morphological characteristics and internal transcribed sequence (ITS) were studied. The results showed that colonics on PDA are white and cottony, the reverse color changed from white to dark purple. The aerial mycelium grew abundantly and the height reached 5 mm to 7 mm. Microconidia are in false head or chains, (5.0?10.5) μm × (1.2?2.5) μm. Macroconidia sickle-shaped were slightly bent, apex acuminate, 2?5 septate, mostly 3?4 septate. Based on the analysis of ITS and the phyogenetic tree, the strain showed a 100% homogeneous and the most close relationship to Fusarium proliferatum Nirenberg. Hence, the strain 059601016C isolated form Laminaria Gametophyte Clones belonged to the genus Fusarium sp. and the GenBank accession number of strain 059601016C ITS is GU951805.