Bernsdorff, Friederike ORCID: 0000-0003-3457-2034, Doering, Anne-Christin, Gruner, Katrin, Schuck, Stefan ORCID: 0000-0002-3959-4884, Braeutigam, Andrea and Zeier, Juergen (2016). Pipecolic Acid Orchestrates Plant Systemic Acquired Resistance and Defense Priming via Salicylic Acid-Dependent and -Independent Pathways. Plant Cell, 28 (1). S. 102 - 130. ROCKVILLE: AMER SOC PLANT BIOLOGISTS. ISSN 1532-298X

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Abstract

We investigated the relationships of the two immune-regulatory plant metabolites, salicylic acid (SA) and pipecolic acid (Pip), in the establishment of plant systemic acquired resistance (SAR), SAR-associated defense priming, and basal immunity. Using SA-deficient sid2, Pip-deficient ald1, and sid2 ald1 plants deficient in both SA and Pip, we show that SA and Pip act both independently from each other and synergistically in Arabidopsis thaliana basal immunity to Pseudomonas syringae. Transcriptome analyses reveal that SAR establishment in Arabidopsis is characterized by a strong transcriptional response systemically induced in the foliage that prepares plants for future pathogen attack by preactivating multiple stages of defense signaling and that SA accumulation upon SAR activation leads to the downregulation of photosynthesis and attenuated jasmonate responses systemically within the plant. Whereas systemic Pip elevations are indispensable for SAR and necessary for virtually the whole transcriptional SAR response, a moderate but significant SA-independent component of SAR activation and SAR gene expression is revealed. During SAR, Pip orchestrates SA-dependent and SA-independent priming of pathogen responses in a FLAVIN-DEPENDENT-MONOOXYGENASE1 (FMO1)-dependent manner. We conclude that a Pip/FMO1 signaling module acts as an indispensable switch for the activation of SAR and associated defense priming events and that SA amplifies Pip-triggered responses to different degrees in the distal tissue of SAR-activated plants.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Bernsdorff, FriederikeUNSPECIFIEDorcid.org/0000-0003-3457-2034UNSPECIFIED
Doering, Anne-ChristinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gruner, KatrinUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Schuck, StefanUNSPECIFIEDorcid.org/0000-0002-3959-4884UNSPECIFIED
Braeutigam, AndreaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Zeier, JuergenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-293340
DOI: 10.1105/tpc.15.00496
Journal or Publication Title: Plant Cell
Volume: 28
Number: 1
Page Range: S. 102 - 130
Date: 2016
Publisher: AMER SOC PLANT BIOLOGISTS
Place of Publication: ROCKVILLE
ISSN: 1532-298X
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
PATTERN-RECOGNITION RECEPTORS; WRKY TRANSCRIPTION FACTORS; ARABIDOPSIS-THALIANA; DISEASE RESISTANCE; TRANSLOCATED SIGNAL; EXPRESSION ANALYSIS; MONOOXYGENASE FMO1; CROSS-TALK; GENE; IMMUNITYMultiple languages
Biochemistry & Molecular Biology; Plant Sciences; Cell BiologyMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/29334

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