Quo vadis, Pep? Plant elicitor peptides at the crossroads of immunity, stress and development
JournalItem (Reviews, Editorials, Rezensionen, Urteilsanmerkungen etc. in einer wissenschaftlichen Zeitschrift)
ID 3178871
Author(s) Bartels, Sebastian; Boller, Thomas
Author(s) at UniBasel Boller, Thomas
Merker, Sebastian
Year 2015
Title Quo vadis, Pep? Plant elicitor peptides at the crossroads of immunity, stress and development
Journal Journal of experimental botany
Volume 66
Number 17
Pages 5183-93
Keywords DAMP, danger, Pep, PEPR, plant elicitor peptide, PTI

The first line of inducible plant defence, pattern-triggered immunity (PTI), is activated by the recognition of exogenous as well as endogenous elicitors. Exogenous elicitors, also called microbe-associated molecular patterns, signal the presence of microbes. In contrast, endogenous elicitors seem to be generated and recognized under more diverse circumstances, making the evaluation of their biological relevance much more complex. Plant elicitor peptides (Peps) are one class of such endogenous elicitors, which contribute to immunity against attack by bacteria, fungi, as well as herbivores. Recent studies indicate that the Pep-triggered signalling pathways also operate during the response to a more diverse set of stresses including starvation stress. In addition, in silico data point to an involvement in the regulation of plant development, and a study on Pep-mediated inhibition of root growth supports this indication. Importantly, Peps are neither limited to the model plant Arabidopsis nor to a specific plant family like the previously intensively studied systemin peptides. On the contrary, they are present and active in angiosperms all across the phylogenetic tree, including many important crop plants. Here we summarize the progress made in research on Peps from their discovery in 2006 until now. We discuss the two main models which describe their likely function in plant immunity, highlight the studies supporting additional roles of Pep-triggered signalling and identify urgent research tasks to further uncover their biological relevance.

Publisher Oxford University Press
ISSN/ISBN 0022-0957
edoc-URL http://edoc.unibas.ch/dok/A6411229
Full Text on edoc No
Digital Object Identifier DOI 10.1093/jxb/erv180
PubMed ID http://www.ncbi.nlm.nih.gov/pubmed/25911744
ISI-Number WOS:000359688700006
Document type (ISI) Journal Article, Review

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