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  Herbivory elicits changes in green leaf volatile production via jasmonate signaling and the circadian clock

Joo, Y., Schuman, M. C., Goldberg, J. K., Wissgott, A., Kim, S.-G., & Baldwin, I. T. (2019). Herbivory elicits changes in green leaf volatile production via jasmonate signaling and the circadian clock. Plant, Cell and Environment, 42(3), 972-982. doi:10.1111/pce.13474.

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 Creators:
Joo, Youngsung1, 2, Author              
Schuman, Meredith C.1, Author              
Goldberg, Jay Keche1, Author              
Wissgott, Antje1, Author              
Kim, Sang-Gyu1, Author              
Baldwin, Ian Thomas1, Author              
Affiliations:
1Department of Molecular Ecology, Prof. I. T. Baldwin, MPI for Chemical Ecology, Max Planck Society, ou_24029              
2IMPRS on Ecological Interactions, MPI for Chemical Ecology, Max Planck Society, Jena, DE, ou_421900              

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 Abstract: The timing of plant volatile emissions is important for a robust indirect defense response. Green leaf volatiles (GLVs) are emitted by plants upon damage but can be suppressed by herbivore-associated elicitors, and the abundance and composition of GLVs vary depending on the timing of herbivore attack. We show that the GLV biosynthetic enzyme HYDROPEROXIDE LYASE (HPL) is transcriptionally regulated by the circadian clock in Nicotiana attenuata. In accordance with transcript abundance of NaHPL, GLV aldehyde pools in intact leaves peaked at night and at subjective night under diurnal and continuous light conditions, respectively. Moreover, although the basal abundance of NaHPL transcripts is upregulated by jasmonate (JA) signaling, JA does not regulate the reduction of NaHPL transcript abundance in damaged leaves by simulated herbivore treatment. Unexpectedly, the plant circadian clock was strongly altered when Manduca sexta larvae fed on N. attenuata, and this was also independent of JA signaling. Lastly, the temporal dynamics of NaHPL transcripts and total GLV emissions were strongly altered by M. sexta larval feeding. Our data suggest that the temporal dynamics of emitted GLV blends result from a combination of damage, JA signaling, herbivore-associated elicitors, and the plant circadian clock.

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 Dates: 2018-10-232018-112019-03
 Publication Status: Published in print
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 Identifiers: Other: ITB593
DOI: 10.1111/pce.13474
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Title: Plant, Cell and Environment
  Other : Plant, Cell & Environment
Source Genre: Journal
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Publ. Info: Oxford, England : Blackwell Science
Pages: - Volume / Issue: 42 (3) Sequence Number: - Start / End Page: 972 - 982 Identifier: ISSN: 0140-7791
CoNE: https://pure.mpg.de/cone/journals/resource/954925471334