A vector system for fast-forward studies of the HOPZ-ACTIVATED RESISTANCE1 (ZAR1) resistosome in the model plant Nicotiana benthamiana

Harant, Adeline, Pai, Hsuan, Sakai, Toshiyuki, Kamoun, Sophien and Adachi, Hiroaki (2022) A vector system for fast-forward studies of the HOPZ-ACTIVATED RESISTANCE1 (ZAR1) resistosome in the model plant Nicotiana benthamiana. Plant Physiology, 188 (1). pp. 70-80. ISSN 0032-0889

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Abstract

Nicotiana benthamiana has emerged as a complementary experimental system to Arabidopsis thaliana. It enables fast-forward in vivo analyses primarily through transient gene expression and is particularly popular in the study of plant immunity. Recently, our understanding of nucleotide-binding leucine-rich repeat (NLR) plant immune receptors has greatly advanced following the discovery of the Arabidopsis HOPZ-ACTIVATED RESISTANCE1 (ZAR1) resistosome. Here, we describe a vector system of 72 plasmids that enables functional studies of the ZAR1 resistosome in N. benthamiana. We showed that ZAR1 stands out among the coiled coil class of NLRs (CC-NLRs) for being highly conserved across distantly related dicot plant species and confirmed NbZAR1 as the N. benthamiana ortholog of Arabidopsis ZAR1. Effector-activated and autoactive NbZAR1 triggers the cell death response in N. benthamiana and this activity is dependent on a functional N-terminal α1 helix. C-terminally tagged NbZAR1 remains functional in N. benthamiana, thus enabling cell biology and biochemical studies in this plant system. We conclude that the NbZAR1 open source pZA plasmid collection forms an additional experimental system to Arabidopsis for in planta resistosome studies.

Item Type: Article
Additional Information: Funding Information: This work was funded by the Gatsby Charitable Foundation (S.K., TSL), Biotechnology and Biological Sciences Research Council (S.K., BBS/E/J/000PR9795 and BB/V002937/1), and European Research Council (S.K., NGRB and BLASTOFF).
Uncontrolled Keywords: physiology,genetics,plant science ,/dk/atira/pure/subjectarea/asjc/1300/1314
Faculty \ School:
Faculty of Science > School of Biological Sciences
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Depositing User: LivePure Connector
Date Deposited: 15 Oct 2021 01:13
Last Modified: 12 May 2022 00:29
URI: https://ueaeprints.uea.ac.uk/id/eprint/81724
DOI: 10.1093/plphys/kiab471

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