Possible Role of Phytocassane, Rice Phytoalexin, in Disease Resistance of Rice against the Blast FungusMagnaporthe grisea | Zendy

Kenji Umemura | Zendy; Noriko Ogawa | Zendy; Masaru Shimura | Zendy; Jinichiro Koga | Zendy; Hideki Usami | Zendy; Toshiaki Kono | Zendy

Open Access

Possible Role of Phytocassane, Rice Phytoalexin, in Disease Resistance of Rice against the Blast FungusMagnaporthe grisea

Author(s) -

Kenji Umemura,

Noriko Ogawa,

Masaru Shimura,

Jinichiro Koga,

Hideki Usami,

Toshiaki Kono

Publication year - 2003

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.67.899

Subject(s) - magnaporthe grisea , phytoalexin , fungus , biology , rice plant , magnaporthe , blast disease , virulence , botany , race (biology) , plant disease resistance , oryza sativa , gene , horticulture , genetics , biochemistry , resveratrol

In addition to momilactone, phytocassanes A through E (diterpene phytoalexins) were detected in rice leaves in fields suffering from rice blast. Furthermore, phytocassane accumulation was most abundant at the edges of necrotic lesions, indicating that the phytoalexins prevent subsequent spread of the fungus from the infected site. In pot experiments the pattern of phytocassane accumulation in rice leaves in an incompatible interaction (infection with an avirulent race of Magnaporthe grisea) was more rapidly induced than in a compatible interaction (infection with a virulent race of M. grisea).

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