“…Due to the systemic nature of herbivore‐induced plant responses, JA–SA crosstalk is expected to occur between leaves and flowers as well, although this has not been tested. Flowers differ from leaves and even vary among flower organs in the accumulation and regulation of JA and SA signalling pathway components (Hause et al ., 2000 ; Rusman et al ., 2019a ), concentrations of defence chemistry (Onodera et al ., 2014 ; Palmer‐Young et al ., 2019 ; Stegemann et al ., 2019 ) and primary metabolites (Abdalsamee & Müller, 2015 ), which might reduce JA–SA crosstalk. A mechanistic understanding of the consequences of herbivory on vegetative tissues for plant interactions with florivores, and more specifically whether flower tissues reflect local or systemic species‐specific induction patterns, will help us understand the evolution of integrated defence responses across plant tissues (Agrawal & Fishbein, 2006 ).…”