NDLI: N-Glycosylation process in both ER and Golgi plays pivotal role in plant immunity

Content Provider	Springer Nature Link
Author	Kang, Byeong Sul Baek, Ji Hyeong Macoy, Donah Mary Chakraborty, Rupak Cha, Joon Yung Hwang, Duk Ju Lee, Yeon Hee Lee, Sang Yeol Kim, Woe Yeon Kim, Min Gab
Copyright Year	2015
Abstract	N-glycosylation of proteins in the endoplasmic reticulum (ER) and Golgi apparatus is essential for protein posttranslational modification in plant cells. Although the Nglycosylation in the ER and Golgi apparatus has been known to regulate protein quality control, salt stress and cellulose biosynthesis, few evidences related to the roles of Nglycosylation in plant immunity have been reported. Arabidopsis thaliana mutants defective in N-glycosylation, namely, staurosporin and temperature sensitive 3a and 3b (stt3a and stt3b) of oligosaccharyltransferase subunit and complex glycan 1 (cgl1) in Golgi apparatus were used in this study. Results showed that Arabidopsis mutant stt3a was more susceptible against Pseudomonas syringae pv. tomato DC3000 (Pst) and Erwinia carotovora subsp. carotovora (ECC). In addition, stt3a was less resistant against Pst harboring effector protein AvrRpm1 compared to the wild type plant. However stt3b showed less significant changes in susceptibility against these three bacterial strains. These results infer the functions of STT3B in N-glycosylation that STT3B is likely supplementary to the main STT3A. Flg22-induced PR1 accumulation and callose deposition were blocked in Nglycosylation mutants, implying that N-glycosylation is involved in the PAMP-triggered immunity. However, Nglycosylation was not absolutely required for AvrRpm1- and AvrRpt2-triggered immunity. STT3A-binding proteins were searched in order to understand the role of STT3A in plant immunity. Ubiquitin-conjugating enzyme E2s, UBC7 and UBC13, were found to be binding proteins of STT3A by yeast two-hybrid assay.
Starting Page	374
Ending Page	382
Page Count	9
File Format	PDF
ISSN	12269239
Journal	Journal of Plant Biology
Volume Number	58
Issue Number	6
e-ISSN	18670725
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-11-29
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Biotic stress Effector triggered immunity NGlycosylation PAMP triggered immunity Plant Sciences Plant Breeding/Biotechnology Plant Genetics & Genomics Plant Systematics/Taxonomy/Biogeography Plant Ecology
Content Type	Text
Resource Type	Article
Subject	Plant Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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