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NaMYB8 regulates distinct, optimally distributed herbivore defense traits

MPG-Autoren
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Schäfer,  Martin
Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

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Brütting,  Christoph
Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

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Xu,  Shuqing
Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society;

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Ling,  Zhihao
Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society;
IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society;

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Baldwin,  Ian Thomas
Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society;

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Schuman,  Meredith C.
Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society;

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Zitation

Schäfer, M., Brütting, C., Xu, S., Ling, Z., Steppuhn, A., Baldwin, I. T., et al. (2017). NaMYB8 regulates distinct, optimally distributed herbivore defense traits. Journal of Integrative Plant Biology, 59(12), 844-850. doi:10.1111/jipb.12593.


Zitierlink: https://hdl.handle.net/11858/00-001M-0000-002D-B1C7-6
Zusammenfassung
When herbivores attack, plants specifically reconfigure their metabolism. Herbivory on the wild tobacco Nicotiana attenuata strongly induces the R2/R3 MYB transcriptional activator MYB8, which was reported to specifically regulate the accumulation of phenolamides (PAs). We discovered that transcriptional regulation of trypsin protease inhibitors (TPIs) and a threonine deaminase (TD) also depend on MYB8 expression. Induced distributions of PAs, TD and TPIs all meet predictions of optimal defense theory: their leaf concentrations increase with the fitness value and the probability of attack of the tissue. Therefore, we suggest that these defensive compounds have evolved to be co-regulated by MYB8.