Individual variability in herbivore-specific elicitors from the plant's perspective

Molecular Ecology
Amy RodaI T Baldwin

Abstract

Lepidopteran larvae oral secretions and regurgitant (R), which contain a plethora of potential elicitors, are known to dramatically change a plant's wound response. We demonstrate, with a detailed microarray and secondary metabolite analysis, that the two most abundant fatty acid-amino acid conjugates (FACs) in the R of the specialist herbivore Manduca sexta (Lepidoptera, Sphingidae) can account for all measured direct (trypsin proteinase inhibitor: TPI) and indirect (cis-alpha-bergamotene) defences, the endogenous jasmonic acid burst that elicits them, and 86% of the induced transcriptional changes (89% up and 83% down) in its native host Nicotiana attenuata and hence are necessary and sufficient for the Manduca-specific modulation of the wound response. FACs were not found in eggs, but detected in larvae of all instars after their first meal. FACs were found in all regions of the alimentary canal and in the frass, but did not occur in salivary or mandibular glands, extracts of which were not active in any assay. Individual larvae differed substantially in their FAC composition and two FAC chemotypes were discernible: N-linolenoyl-L-glutamine biased R and N-linolenoyl-L-glutamate biased R. We created synthetic blends of FACs t...Continue Reading

References

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Citations

Apr 2, 2011·Journal of Chemical Ecology·Seung Ho Chung, Gary W Felton
Jan 7, 2009·Proceedings of the National Academy of Sciences of the United States of America·Eric A SchmelzPeter E A Teal
Oct 14, 2011·Journal of Experimental Botany·Floriane ConsalesPhilippe Reymond
Mar 5, 2008·Plant Physiology·May R Berenbaum, Arthur R Zangerl
Dec 8, 2009·Biological Reviews of the Cambridge Philosophical Society·Monika Hilker, Torsten Meiners
Aug 5, 2005·Annual Review of Phytopathology·Richard M Bostock
Jan 15, 2013·Journal of Experimental Botany·Ingela FridborgSarosh Bejai
Aug 17, 2006·Proceedings of the National Academy of Sciences of the United States of America·Jens SchwachtjeIan T Baldwin
Jul 8, 2014·Metabolites·Shinichiro MurakamiNaoki Mori
Mar 5, 2016·Bioscience, Biotechnology, and Biochemistry·Naoko Yoshinaga
Feb 1, 2005·Insect Biochemistry and Molecular Biology·Naoko YoshinagaNaoki Mori
Feb 14, 2007·Trends in Ecology & Evolution·Jan E KammengaRainer Breitling
Mar 10, 2007·The Plant Journal : for Cell and Molecular Biology·Shree P Pandey, Ian T Baldwin
Jun 26, 2007·The Plant Journal : for Cell and Molecular Biology·Jianqiang WuIan T Baldwin
Dec 22, 2005·The Plant Journal : for Cell and Molecular Biology·Anja PascholdIan T Baldwin

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