systemic stress response
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2021 ◽  
Author(s):  
Liping Zeng ◽  
Jin‐Zheng Wang ◽  
Xiang He ◽  
Haiyan Ke ◽  
Mark Lemos ◽  
...  

2021 ◽  
Author(s):  
liping zeng ◽  
Jin-Zheng Wang ◽  
Xiang He ◽  
Haiyan Ke ◽  
Mark Lemos ◽  
...  

Plants employ an array of intricate and hierarchical signaling cascades to perceive and transduce informational cues to synchronize and tailor adaptive responses. Systemic stress response (SSR) is a recognized complex signaling and response network quintessential to plant's local and distal responses to environmental triggers, however, the identity of the initiating signals has remained fragmented. Here, we show that both biotic (aphids and viral pathogens) and abiotic (high light and wounding) stresses induce accumulation of the plastidial-retrograde-signaling metabolite, methylerythritol cyclodiphosphate (MEcPP), leading to reduction of the phytohormone, auxin, and the subsequent decreased expression of the phosphatase, PP2C.D1. This enables phosphorylation of mitogen-activated protein kinases (MAPK3/6), and the consequential induction of the downstream events ultimately resulting in biosynthesis of the two SSR priming metabolites, pipecolic- and N-hydroxy-pipecolic acid. This work identifies plastids as the initiation site, and the plastidial retrograde-signal, MEcPP as the initiator of a multi-component signaling cascade potentiating the biosynthesis of SSR activators, in response to biotic and abiotic triggers.


2018 ◽  
Vol 178 (2) ◽  
pp. 672-683 ◽  
Author(s):  
Jesús Beltrán ◽  
Yashitola Wamboldt ◽  
Robersy Sanchez ◽  
Evan W. LaBrant ◽  
Hardik Kundariya ◽  
...  

2018 ◽  
Author(s):  
Jesss Beltrrn ◽  
Yashitola Wamboldt ◽  
Robersy Sanchez ◽  
Evan LaBrant ◽  
Hardik Kundariya ◽  
...  

2017 ◽  
Vol 158 (2) ◽  
pp. 454-464 ◽  
Author(s):  
Samantha J. Snow ◽  
Marie A. McGee ◽  
Andres Henriquez ◽  
Judy E. Richards ◽  
Mette C. Schladweiler ◽  
...  

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