Plant Mol Biol (2017) 93:109–120 DOI 10.1007/s11103-016-0550-z Arabidopsis thaliana methionine sulfoxide reductase B8 influences stress-induced cell death and effector-triggered immunity 1 1 Shweta Roy · Ashis Kumar Nandi Received: 14 June 2016 / Accepted: 3 October 2016 / Published online: 29 November 2016 © Springer Science+Business Media Dordrecht 2016 Abstract avirulent pathogen or UV treatment induces expression of Key message Reactive oxygen species (ROS) oxi- MSRB7 and MSRB8 genes. The T-DNA insertion mutant dize methionine to methionine sulfoxide (MetSO) of MSRB8 exaggerates HR-associated and UV-induced cell and thereby inactivate proteins. Methionine sulfox- death and accumulates a higher level of ROS than wild- ide reductase (MSR) enzyme converts MetSO back to type plants. The negative regulatory role of MSRB8 in HR the reduced form and thereby detoxifies the effect of is further supported by amiRNA and overexpression lines. ROS. Our results show that Arabidopsis thaliana MSR Mutants and overexpression lines of MSRB8 are suscepti- enzyme coding gene MSRB8 is required for effector- ble and resistant respectively, compared to the wild-type triggered immunity and containment of stress-induced plants, against avirulent strains of Pseudomonas syringae cell death in Arabidopsis. pv. tomato DC3000 (Pst) carrying AvrRpt2, AvrB, or AvrP- Abstract Plants activate pattern-triggered immunity phB genes.
Plant Molecular Biology – Springer Journals
Published: Nov 29, 2016
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