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Isoprene and β-caryophyllene confer plant resistance via different plant internal signaling pathways.

Plant Cell Environ. 44, 1151-1164 (2021)
Verlagsversion DOI
Open Access Gold (Paid Option)
Creative Commons Lizenzvertrag
Isoprene and other terpenoids are important biogenic volatile organic compounds in terms of atmospheric chemistry. Isoprene can aid plant performance under abiotic stresses, but the fundamental biological reasons for the high emissions are not completely understood. Here, we provide evidence of a previously unrecognized ecological function for isoprene and for the sesquiterpene, ß-caryophyllene. We show that isoprene and ß-caryophyllene act as core components of plant signaling networks, inducing resistance against microbial pathogens in neighboring plants. We challenged Arabidopsis thaliana with Pseudomonas syringae, after exposure to pure volatile terpenoids or to volatile emissions of transformed poplar or Arabidopsis plants. The data suggests that isoprene induces a defense response in receiver plants that is similar to that elicited by monoterpenes and depended on salicylic acid (SA) signaling. In contrast, the sesquiterpene, ß-caryophyllene, induced resistance via jasmonic acid (JA)-signaling. The experiments in an open environment show that natural biological emissions are enough to induce resistance in neighboring Arabidopsis. Our results show that both isoprene and ß-caryophyllene function as allelochemical components in complex plant signaling networks. Knowledge of this system may be used to boost plant immunity against microbial pathogens in various crop management schemes.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Arabidopsis Thaliana ; Pseudomonas Syringae ; Isoprene ; Jasmonic Acid ; Plant Resistance ; Salicylic Acid ; Terpenes ; Volatile Organic Compounds ; ß-caryophyllene
ISSN (print) / ISBN 0140-7791
e-ISSN 1365-3040
Quellenangaben Band: 44, Heft: 4, Seiten: 1151-1164 Artikelnummer: , Supplement: ,
Verlag Wiley
Verlagsort Malden, MA
Begutachtungsstatus Peer reviewed
Förderungen Deutsche Forschungsgemeinschaft