Molecular Plant-Microbe Interactions (2012) 25, 1605-1616

Vessela Atanasova-Penichon, Sebastien Pons, Laetitia Pinson-Gadais, Adeline Picot, Gisèle Marchegay, Marie-Noelle Bonnin-Verdal, Christine Ducos, Christian Barreau, Joel Roucolle, Pierre Sehabiague, Pierre Carolo and Florence Richard-Forget (2012)
Chlorogenic acid and maize ear rot resistance: A dynamic study investigating Fusarium graminearum development, deoxynivalenol production, and phenolic acid accumulation
Molecular Plant-Microbe Interactions 25 (12), 1605-1616
Abstract: Fusarium graminearum is the causal agent of Gibberella ear rot and produces trichothecene mycotoxins. Basic questions remain unanswered regarding the kernel stages associated with trichothecene biosynthesis and the kernel metabolites potentially involved in the regulation of trichothecene production in planta. In a two-year field study, F. graminearum growth, trichothecene accumulation, and phenolic acid composition were monitored in developing maize kernels of a susceptible and a moderately resistant variety using quantitative polymerase chain reaction and liquid chromatography coupled with photodiode array or mass spectrometry detection. Infection started as early as the blister stage and proceeded slowly until the dough stage. Then, a peak of trichothecene accumulation occurred and infection progressed exponentially until the final harvest time. Both F. graminearum growth and trichothecene production were drastically reduced in the moderately resistant variety. We found that chlorogenic acid is more abundant in the moderately resistant variety, with levels spiking in the earliest kernel stages induced by Fusarium infection. This is the first report that precisely describes the kernel stage associated with the initiation of trichothecene production and provides in planta evidence that chlorogenic acid may play a role in maize resistance to Gibberella ear rot and trichothecene accumulation.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Vessela Atanasova-Penichon, Christian Barreau

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Fusarium graminearum	Maize/corn (Zea mays)