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Updated: Jan 24, 2026

The Plant Infection Test: Spray and Wound-Mediated Inoculation with the Plant Pathogen Magnaporthe Grisea
Published on: August 4, 2018
Targeted Gene Inactivations Expose Silent Cytochalasans in Magnaporthe grisea NI980
Chongqing Wang1, Verena Hantke1, Russell J Cox1
1Institute for Organic Chemistry and Centre for Biomolecular Drug Research , Leibniz University Hannover , Schneiderberg 38 , Hannover 30167 , Germany.
Abstract:
The biosynthetic gene cluster encoding the phytotoxin pyrichalasin H 5 was discovered in Magnaporthe grisea NI980, and the late-stage biosynthetic pathway of 5 was fully elucidated using targeted gene inactivations resulting in the isolation of 13 novel cytochalasans. This study reveals that the nonproteinogenic amino acid O-methyltyrosine is the true precursor of 5, and other cryptic cytochalasans and mutasynthesis experiments produce novel halogenated pyrichalasin H analogues.
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