Identification of Sternbin and Naringenin as Detoxified Metabolites from the Rice Flavanone Phytoalexin Sakuranetin by  Pyricularia oryzae | Zendy

Katsumata Shun | Zendy; Hamana Kazuho | Zendy; Horie Kiyotaka | Zendy; Toshima Hiroaki | Zendy; Hasegawa Morifumi | Zendy

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Identification of Sternbin and Naringenin as Detoxified Metabolites from the Rice Flavanone Phytoalexin Sakuranetin by Pyricularia oryzae

Author(s) -

Katsumata Shun,

Hamana Kazuho,

Horie Kiyotaka,

Toshima Hiroaki,

Hasegawa Morifumi

Publication year - 2017

Publication title -

chemistry and biodiversity

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.427

H-Index - 70

eISSN - 1612-1880

pISSN - 1612-1872

DOI - 10.1002/cbdv.201600240

Subject(s) - pyricularia , phytoalexin , naringenin , flavanone , chemistry , hesperetin , identification (biology) , biochemistry , flavonoid , botany , biology , resveratrol , antioxidant

Sakuranetin ( 1 ) is a flavanone phytoalexin that has been reported to play an important role in disease resistance in rice plants. The rice blast fungus Pyricularia oryzae (syn. Magnaporthe oryzae ) has been reported to metabolize 1 to lower its antifungal activity. Here, two flavanones, sternbin ( 2 ) and naringenin ( 3 ), were identified as metabolites of 1 in P . oryzae suspension culture by liquid chromatography tandem mass spectrometry ( LC / MS / MS ). The inhibition of 1 , 2 , and 3 on P . oryzae mycelial growth were 45%, 19%, and 19%, respectively, at a concentration of 100 μ m . Thus, 2 and 3 are detoxified metabolites of 1 by P . oryzae .

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