Herbivory in the previous generation primes plants for enhanced insect resistance.

Details

Serval ID
serval:BIB_CA19BD941355
Type
Article: article from journal or magazin.
Collection
Publications
Title
Herbivory in the previous generation primes plants for enhanced insect resistance.
Journal
Plant Physiology
Author(s)
Rasmann S., De Vos M., Casteel C.L., Tian D., Halitschke R., Sun J.Y., Agrawal A.A., Felton G.W., Jander G.
ISSN
1532-2548 (Electronic)
ISSN-L
0032-0889
Publication state
Published
Issued date
2012
Volume
158
Number
2
Pages
854-863
Language
english
Abstract
Inducible defenses, which provide enhanced resistance after initial attack, are nearly universal in plants. This defense signaling cascade is mediated by the synthesis, movement, and perception of jasmonic acid and related plant metabolites. To characterize the long-term persistence of plant immunity, we challenged Arabidopsis (Arabidopsis thaliana) and tomato (Solanum lycopersicum) with caterpillar herbivory, application of methyl jasmonate, or mechanical damage during vegetative growth and assessed plant resistance in subsequent generations. Here, we show that induced resistance was associated with transgenerational priming of jasmonic acid-dependent defense responses in both species, caused caterpillars to grow up to 50% smaller than on control plants, and persisted for two generations in Arabidopsis. Arabidopsis mutants that are deficient in jasmonate perception (coronatine insensitive1) or in the biogenesis of small interfering RNA (dicer-like2 dicer-like3 dicer-like4 and nuclear RNA polymerase d2a nuclear RNA polymerase d2b) do not exhibit inherited resistance. The observation of inherited resistance in both the Brassicaceae and Solanaceae suggests that this trait may be more widely distributed in plants. Epigenetic resistance to herbivory thus represents a phenotypically plastic mechanism for enhanced defense across generations.
Keywords
Acetates/metabolism, Animals, Cyclopentanes/metabolism, Feeding Behavior, Insects/physiology, Oxylipins/metabolism, Plants/genetics, Plants/parasitology, RNA, Small Interfering/genetics
Pubmed
Web of science
Open Access
Yes
Create date
01/03/2012 18:30
Last modification date
20/08/2019 15:45
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