A salicylic acid‐associated plant‐microbe interaction attracts beneficial Flavobacterium sp. to the Arabidopsis thaliana phyllosphere

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00008291
URN to cite this document: urn:nbn:de:bvb:703-epub-8291-3

Title data

Sommer, Anna ; Wenig, Marion ; Knappe, Claudia ; Kublik, Susanne ; Foesel, Bärbel U. ; Schloter, Michael ; Vlot, A. Corina:
A salicylic acid‐associated plant‐microbe interaction attracts beneficial Flavobacterium sp. to the Arabidopsis thaliana phyllosphere.
In: Physiologia Plantarum. Vol. 176 (2024) Issue 4 . - e14483.
ISSN 1399-3054
DOI der Verlagsversion: https://doi.org/10.1111/ppl.14483

	Format: PDF Name: Physiologia Plantarum - 2024 - Sommer - A salicylic acid‐associated plant‐microbe interaction attracts beneficial.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Abstract

Both above- and below-ground parts of plants are constantly challenged with microbes and interact closely with them. Many plant-growth-promoting rhizobacteria, mostly interacting with the plant's root system, enhance the immunity of plants in a process described as induced systemic resistance (ISR). Here, we characterized local induced resistance (IR) triggered by the model PGPR Pseudomonas simiae WCS417r (WCS417) in Arabidopsis thaliana. Hydroponic application of WCS417 to Arabidopsis roots resulted in propagation of WCS417 in/on leaves and the establishment of local IR.WCS417-triggered local IR was dependent on salicylic acid (SA) biosynthesis and signalling and on functional biosynthesis of pipecolic acid and monoterpenes, which are classically associated with systemic acquired resistance (SAR). WCS417-triggered local IRwas further associated with a priming of gene expression changes related to SA signalling and SAR. A metabarcoding approach applied to the leaf microbiome revealed a significant local IR-associated enrichment of Flavobacterium sp.. Co-inoculation experiments using WCS417 and At-LSPHERE Flavobacterium sp. Leaf82 suggest that the proliferation of these bacteria is influenced by both microbial and immunity-related, plant-derived factors. Furthermore, application of Flavobacterium Leaf82 to Arabidopsis leaves induced SAR in an NPR1-dependent manner, suggesting that recruitment of this bacterium to the phyllosphere resulted in propagation of IR. Together, the data highlight the importance of plant-microbe-microbe interactions in the phyllosphere and reveal Flavobacterium sp. Leaf82 as a newbeneficial promoter of plant health.

Further data

Item Type:	Article in a journal
DDC Subjects:	500 Science > 570 Life sciences, biology 500 Science > 580 Plants (Botany)
Institutions of the University:	Faculties > Faculty of Life Sciences: Food, Nutrition and Health > Chair Crop Plant Genetics > Chair Crop Plant Genetics - Univ.-Prof. Dr. Anna Cornelia Vlot-Schuster Faculties Faculties > Faculty of Life Sciences: Food, Nutrition and Health Faculties > Faculty of Life Sciences: Food, Nutrition and Health > Chair Crop Plant Genetics
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-8291-3
Date Deposited:	12 Mar 2025 06:52
Last Modified:	12 Mar 2025 06:52
URI:	https://epub.uni-bayreuth.de/id/eprint/8291

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