Kinases and protein motifs required for AZI1 plastid localization and trafficking during plant defense induction.
Arabidopsis thaliana
AZI1
Systemic immunity
defense priming
lipid transfer protein
signal-anchored proteins
Journal
The Plant journal : for cell and molecular biology
ISSN: 1365-313X
Titre abrégé: Plant J
Pays: England
ID NLM: 9207397
Informations de publication
Date de publication:
03 2021
03 2021
Historique:
revised:
14
12
2020
received:
06
07
2018
accepted:
15
12
2020
pubmed:
21
12
2020
medline:
31
7
2021
entrez:
20
12
2020
Statut:
ppublish
Résumé
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.
Identifiants
pubmed: 33342031
doi: 10.1111/tpj.15137
pmc: PMC8048937
doi:
Substances chimiques
Arabidopsis Proteins
0
Carrier Proteins
0
lipid transfer protein
0
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Langues
eng
Sous-ensembles de citation
IM
Pagination
1615-1629Subventions
Organisme : NIH HHS
ID : T32 GM007183
Pays : United States
Organisme : Howard Hughes Medical Institute
Pays : United States
Informations de copyright
© 2020 The Authors. The Plant Journal published by Society for Experimental Biology and John Wiley & Sons Ltd.
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