| Title: | Host plant defense signaling in response to a coevolved herbivore combats introduced herbivore attack |
| Author(s): | Woodard AM; Ervin GN; Marsico TD; |
| ISSN/ISBN: | 2045-7758 (Electronic) 2045-7758 (Print) 2045-7758 (Linking) |
| Abstract: | "Defense-free space resulting from coevolutionarily naive host plants recently has been implicated as a factor facilitating invasion success of some insect species. Host plants, however, may not be entirely defenseless against novel herbivore threats. Volatile chemical-mediated defense signaling, which allows plants to mount specific, rapid, and intense responses, may play a role in systems experiencing novel threats. Here we investigate defense responses of host plants to a native and exotic herbivore and show that (1) host plants defend more effectively against the coevolved herbivore, (2) plants can be induced to defend against a newly-associated herbivore when in proximity to plants actively defending against the coevolved species, and (3) these defenses affect larval performance. These findings highlight the importance of coevolved herbivore-specific defenses and suggest that naivete or defense limitations can be overcome via defense signaling. Determining how these findings apply across various host-herbivore systems is critical to understand mechanisms of successful herbivore invasion" |
| Keywords: | Coevolution HIPVs defense priming herbivore-induced plant volatiles insect herbivore invasive species naive host plant defense plant-plant signaling; |
| Notes: | "PubMed-not-MEDLINEWoodard, Anastasia M Ervin, Gary N Marsico, Travis D eng England 2012/07/28 Ecol Evol. 2012 May; 2(5):1056-64. doi: 10.1002/ece3.224" |
