Fusarium fujikuroi
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Author(s): O.P. Sharma, NCIPM, New Delhi. India
Source: IPM Images
Author(s): Clemson University - USDA Cooperative Extension Slide Series
Source: IPM Images
Fusarium fujikuroi Nirenberg 1976
This fungus causes the bakanae disease of rice in various rice growing regions. The disease is transmitted by contaminated seeds and can already affect rice seedlings. The name "bakanae" can be translated from Japanese as "foolish seedling". Symptoms include stunting and elongation of the plants, resulting in a spindly growth, as well as yellowish green leaves and pale green flag leaves. However, these symptoms can be also caused by some other species of Fusarium. Yield losses of up to 50% have been reported, e.g. from some areas in Asia.
F. fujikuroi and closely related species form the Fusarium fujikuroi species complex which includes around 60 species. The complex has been further grouped into the American, African and Asia clades. The complex is well supported genetically. Moprhologically, it is characterized by the species producing macroconidia, microconidia in chains and/or false heads, and by the absence of chlamydospores. The species of the complex often cause important plant diseases, produce mycotoxins like beauvericin, fumonisins, or moniliformin, and can also cause opportunistic human infections. For a taxonomic review of the F. fujikuroi species complex see Yilmaz et al. (2021).
Synonyms:
Gibberella fujikuroi (mating type C)
