Jasmonic acid‐dependent regulation of seed dormancy following maternal herbivory in Arabidopsis

• DOI: 10.1111/nph.14525
• Publication Date: 2017-03-24T06:51:01Z
• Authors: Prashant Singh; Anuja Dave; Fabian E. Vaistij; Dawn Worrall; Geoff H. Holroyd; Jonathan G. Wells; Filip Kaminski; Ian A. Graham; Michael R. Roberts
• Keywords: Jasmonic acid

Summary Maternal experience of abiotic environmental factors such as temperature and light are well known to control seed dormancy in many plant species. biotic stress alters offspring defence phenotypes, but whether it also affects remains unexplored. We exposed Arabidopsis thaliana plants herbivory investigated plasticity germination phenotypes their offspring, along with the roles phytohormone signalling regulating maternal effects. resulted accumulation jasmonic acid‐isoleucine loss seeds stressed plants. Dormancy was reduced by engineering seed‐specific acid transgenic Loss dependent on an intact jasmonate pathway associated increased gibberellin content abscisic sensitivity during germination. Altered only observed first generation following herbivory, whereas priming maintained for at least two generations. Herbivory generates a acid‐dependent reduction dormancy, mediated alteration signalling. This is direct effect, operating independently from transgenerational herbivore resistance priming.