Contents
	Summary	2564
I.	Introduction	2564
II.	Evolutionary divergence of JA biosynthesis and signalling pathway	2565
III.	Microbial effectors targeting the JA Pathway: convergence across biotic interactions	2565
IV.	The broad role of JA‐signalling across mutualistic relationships: MYC2 as a coordinator between immunity and mutualism	2565
V.	Environmental integration: light, heat, nutrients and microbes	2567
VI.	Multilayered and spatial regulation of JA signalling	2567
VII.	Conclusion and future perspectives	2568
	Acknowledgements	2569
	References	2569