Magnaporthe grisea, also known as rice blast fungus among other names, is a plant-pathogenic fungus and model organism that causes a serious disease affecting rice. The species is now understood to be a cryptic species complex containing at least two genetically distinct, non-interbreeding lineages: members isolated from Digitaria are now defined more narrowly as Magnaporthe grisea, while those isolated from rice and other hosts have been renamed Magnaporthe oryzae, though which of the two names properly belongs to the rice pathogen remains disputed among researchers.
Facts
Disputed
Scientific NameMagnaporthe oryzae, also called Magnaporthe grisea 1 Authors disagree on whether the rice pathogen is named Magnaporthe grisea or Magnaporthe oryzae; the source states both names are in use. Identification
Distinguishing AppearanceCauses white to gray-green lesions with darker borders; older lesions are elliptical or spindle-shaped and whitish to gray with necrotic borders 1 Sources
1. Magnaporthe grisea, Wikipedia
Lead section, fifth sentence
Confusion on which of these two names to use for the rice blast pathogen remains, as both are now used by different authors.
Hosts and symptoms, first paragraph
Initial symptoms are white to gray-green lesions or spots with darker borders produced on all parts of the shoot, while older lesions are elliptical or spindle-shaped and whitish to gray with necrotic borders.
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