hormone crosstalk
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2019 ◽  
Author(s):  
Ryan Anderson ◽  
Devdutta Deb ◽  
John Withers ◽  
Sheng Yang He ◽  
John McDowell

ABSTRACTUnderstanding the mechanisms through which pathogens alter plant cell networks is essential for understanding plant-pathogen interactions and will inform efforts to reduce crop diseases. Oomycetes secrete diverse effector proteins into plant cells. The mechanisms through which these effectors promote virulence are largely unknown. We show that the HaRxL10 effector protein from the Arabidopsis thaliana pathogen Hyaloperonospora arabidopsidis (Hpa) targets a transcriptional repressor (JAZ3) involved in jasmonic acid (JA) signalling. This manipulation activates a regulatory cascade that inhibits salicylic acid (SA) signalling, which normally restricts Hpa infection. This virulence mechanism is functionally equivalent to but mechanistically distinct from activation of the antagonistic JA-SA hormone crosstalk by the bacterial JA-mimicking toxin coronatine and by bacterial Type III effectors. These results reveal a key role for JAZ3 in plant immunity and emphasize that JA-SA crosstalk is an Achilles’ heel in the plant immune system, vulnerable to manipulation by diverse microbes.


2018 ◽  
Vol 41 (10) ◽  
pp. 2342-2356 ◽  
Author(s):  
Silvia Proietti ◽  
Lotte Caarls ◽  
Silvia Coolen ◽  
Johan A. Van Pelt ◽  
Saskia C.M. Van Wees ◽  
...  

Plant Science ◽  
2016 ◽  
Vol 253 ◽  
pp. 86-97 ◽  
Author(s):  
Balázs Kalapos ◽  
Petre Dobrev ◽  
Tibor Nagy ◽  
Pavel Vítámvás ◽  
János Györgyey ◽  
...  

2016 ◽  
Vol 21 (7) ◽  
pp. 594-608 ◽  
Author(s):  
Elzbieta Sarnowska ◽  
Dominika M. Gratkowska ◽  
Sebastian P. Sacharowski ◽  
Pawel Cwiek ◽  
Takayuki Tohge ◽  
...  

2015 ◽  
Vol 67 (7) ◽  
pp. 2107-2120 ◽  
Author(s):  
Tong Zhang ◽  
Arati N. Poudel ◽  
Jeremy B. Jewell ◽  
Naoki Kitaoka ◽  
Paul Staswick ◽  
...  

2015 ◽  
Vol 66 (16) ◽  
pp. 4853-4854 ◽  
Author(s):  
Angus Murphy
Keyword(s):  

2015 ◽  
Vol 16 (5) ◽  
pp. 369-388 ◽  
Author(s):  
Puja Ohri ◽  
Renu Bhardwaj ◽  
Shagun Bali ◽  
Ravinderjit Kaur ◽  
Shivam Jasrotia ◽  
...  

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