Rights statement: This is the peer reviewed version of the following article: Singh, P., Dave, A., Vaistij, F. E., Worrall, D., Holroyd, G. H., Wells, J. G., Kaminski, F., Graham, I. A. and Roberts, M. R. (2017), Jasmonic acid-dependent regulation of seed dormancy following maternal herbivory in Arabidopsis. New Phytol, 214: 1702–1711. doi:10.1111/nph.14525 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/nph.14525/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
}
TY - JOUR
T1 - Jasmonic acid-dependent regulation of seed dormancy following maternal herbivory in Arabidopsis
AU - Singh, Prashant
AU - Dave, Anuja
AU - Vaistij, Fabian
AU - Worrall, Dawn
AU - Holroyd, Geoffrey Heys
AU - Wells, Jonathan
AU - Kaminski, Filip
AU - Graham, Ian
AU - Roberts, Michael Richard
N1 - This is the peer reviewed version of the following article: Singh, P., Dave, A., Vaistij, F. E., Worrall, D., Holroyd, G. H., Wells, J. G., Kaminski, F., Graham, I. A. and Roberts, M. R. (2017), Jasmonic acid-dependent regulation of seed dormancy following maternal herbivory in Arabidopsis. New Phytol, 214: 1702–1711. doi:10.1111/nph.14525 which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/nph.14525/abstract This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving.
PY - 2017/6
Y1 - 2017/6
N2 - Maternal experience of abiotic environmental factors such as temperature and light are well-known to control seed dormancy in many plant species. Maternal biotic stress alters offspring defence phenotypes, but whether it also affects seed dormancy is remains unexplored.We exposed Arabidopsis thaliana plants to herbivory and investigated plasticity in germination and defence phenotypes in their offspring, along with the roles of phytohormone signalling in regulating maternal effects.Maternal herbivory resulted in the accumulation of jasmonic acid-isoleucine and loss of dormancy in seeds of stressed plants. Dormancy was also reduced by engineering seed-specific accumulation of jasmonic acid in transgenic plants. Loss of dormancy was dependent on an intact jasmonate signalling pathway and was associated with increased gibberellin content and reduced abscisic acid-sensitivity during germination. Altered dormancy was only observed in the first generation following herbivory, whereas defence priming was maintained for at least two generations.Herbivory generates a jasmonic acid-dependent reduction in seed dormancy, mediated by alteration of gibberellin and abscisic acid signalling. This is a direct maternal effect, operating independently from transgenerational herbivore resistance priming.
AB - Maternal experience of abiotic environmental factors such as temperature and light are well-known to control seed dormancy in many plant species. Maternal biotic stress alters offspring defence phenotypes, but whether it also affects seed dormancy is remains unexplored.We exposed Arabidopsis thaliana plants to herbivory and investigated plasticity in germination and defence phenotypes in their offspring, along with the roles of phytohormone signalling in regulating maternal effects.Maternal herbivory resulted in the accumulation of jasmonic acid-isoleucine and loss of dormancy in seeds of stressed plants. Dormancy was also reduced by engineering seed-specific accumulation of jasmonic acid in transgenic plants. Loss of dormancy was dependent on an intact jasmonate signalling pathway and was associated with increased gibberellin content and reduced abscisic acid-sensitivity during germination. Altered dormancy was only observed in the first generation following herbivory, whereas defence priming was maintained for at least two generations.Herbivory generates a jasmonic acid-dependent reduction in seed dormancy, mediated by alteration of gibberellin and abscisic acid signalling. This is a direct maternal effect, operating independently from transgenerational herbivore resistance priming.
KW - Abscisic acid
KW - Arabidopsis thaliana
KW - defence
KW - dormancy
KW - herbivory
KW - jasmonic acid
KW - priming
KW - seeds
U2 - 10.1111/nph.14525
DO - 10.1111/nph.14525
M3 - Journal article
VL - 214
SP - 1702
EP - 1711
JO - New Phytologist
JF - New Phytologist
SN - 0028-646X
IS - 4
ER -