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A novel role of salt and drought induced RING 1 protein in modulating plant defense against hemibiotrophic and necrotrophic pathogens

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Title A novel role of salt and drought induced RING 1 protein in modulating plant defense against hemibiotrophic and necrotrophic pathogens
 
Creator Ramu, Vemanna S.
Oh, Sunhee
Lee, Hee-Kyung
Nandety, Raja Sekhar
Oh, Youngjae
Lee, Seonghee
Nakashima, Jin
Tang, Yuhong
Senthil-Kumar, Muthappa
Mysore, Kirankumar S.
 
Subject Plant immunity
Disease resistance
E3 Ligase
transcription factor
ABA
Jasmonic acid
Hormones
 
Description Accepted date: 24 Nov 2020
Many plant encoded E3 ligases are known to be involved in plant defense. Here we report a novel role of E3 ligase SALT- AND DROUGHT-INDUCED RING FINGER1 (SDIR1) in plant immunity. Even though SDIR1 is reasonably well-characterized, its role in biotic stress response is not known. The silencing of SDIR1 in Nicotiana benthamiana reduced the multiplication of the virulent bacterial pathogen Pseudomonas syringae pv. tabaci. The Arabidopsis sdir1 mutant is resistant to virulent pathogens, whereas SDIR1 overexpression lines are susceptible to both host and nonhost hemibiotrophic bacterial pathogens. However, sdir1 mutant and SDIR1 overexpression lines showed hypersusceptibility and resistance, respectively, against the necrotrophic pathogen, Erwinia carotovora. The mutant of SDIR1 target protein, SDIR-interacting protein 1 (SDIR1P1), also showed resistance to host and nonhost pathogens. In SDIR1 overexpression plants, transcripts of NAC transcription factors were less accumulated and the levels of JA and abscisic acid (ABA) were increased. In sdir1 mutants, JA signaling genes JAZ7 and JAZ8 were downregulated. These data suggest that SDIR1 is a susceptibility factor, and its activation/overexpression enhances disease caused by P. syringae pv. tomato DC3000 in Arabidopsis. Our results show a novel role of SDIR1 in modulating plant defense gene expression and plant immunity.
We thank Dr. Sheng Yang He (Michigan State University) for providing
seeds of JAZ9 overexpression and mutant lines, and Janie Gallaway for assistance in plant care.
V.S.R acknowledges Fulbright-Nehru postdoctoral fellowship from USIEF, INDIA. K.S.M
acknowledges Fulbright-Nehru Academic and Professional Excellence Award.
 
Date 2020-11-27T08:52:25Z
2020-11-27T08:52:25Z
2020
 
Type Article
 
Identifier Molecular Plant-Microbe Interactions, (In Press)
1943-7706
https://doi.org/10.1094/MPMI-09-20-0257-R
https://apsjournals.apsnet.org/doi/10.1094/MPMI-09-20-0257-R?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub%20%200pubmed
http://223.31.159.10:8080/jspui/handle/123456789/1127
 
Language en_US
 
Format application/pdf
 
Publisher American Phytopathological Society