Cecchini, NM, Speed, DJ, Roychoudhry, S orcid.org/0000-0002-9736-0269 et al. (1 more author) (2021) Kinases and protein motifs required for AZI1 plastid localization and trafficking during plant defense induction. The Plant Journal, 105 (6). pp. 1615-1629. ISSN 0960-7412
Abstract
The proper subcellular localization of defense factors is an important part of the plant immune system. A key component for systemic resistance, lipid transfer protein (LTP)‐like AZI1, is needed for the systemic movement of the priming signal azelaic acid (AZA) and a pool of AZI1 exists at the site of AZA production, the plastid envelope. Moreover, after systemic defense‐triggering infections, the proportion of AZI1 localized to plastids increases. However, AZI1 does not possess a classical plastid transit peptide that can explain its localization. Instead, AZI1 uses a bipartite N‐terminal signature that allows for its plastid targeting. Furthermore, the kinases MPK3 and MPK6, associated with systemic immunity, promote the accumulation of AZI1 at plastids during priming induction. Our results indicate the existence of a mode of plastid targeting possibly related to defense responses.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2020 The Authors. The Plant Journal published by Society for Experimental Biology and John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
Keywords: | Systemic immunity; Arabidopsis thaliana; signal‐anchored proteins; defense priming; lipid transfer protein |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 30 Apr 2021 08:05 |
Last Modified: | 30 Apr 2021 08:05 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1111/tpj.15137 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:173517 |