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Nat Plants. 2017 May 26;3:17072. doi: 10.1038/nplants.2017.72.

NLR locus-mediated trade-off between abiotic and biotic stress adaptation in Arabidopsis.

Author information

1
Department of Bioscience, Tokyo University of Agriculture, Tokyo 156-8502, Japan.
2
Department of Biology, Chiba University, Chiba 263-8522, Japan.
3
Graduate School of Biological Sciences, Nara Institute for Science and Technology, Ikoma 630-0192, Japan.
4
Department of Plant-Microbe Interactions, Max-Planck Institute for Plant Breeding Research, D-50829 Cologne, Germany.
5
Department of Plant Biology, University of Barcelona, 08028 Barcelona, Spain.
6
Department of Plant Breeding and Genetics, Max-Planck Institute for Plant Breeding Research D-50829 Cologne, Germany.
7
United States Department of Agriculture, Agricultural Research Service (USDA-ARS), Ithaca, 14853 New York, USA.
8
United States Department of Agriculture, Agricultural Research Service (USDA-ARS), Maricopa, Arizona 85138, USA.
9
Plant Productivity Systems Research Group, RIKEN Centre for Sustainable Resource Science, Kanagawa 230-0045, Japan.
10
RIKEN BioResource Center, Ibaraki, 305-0074 Japan.
11
Gene Discovery Research Group, RIKEN Center for Sustainable Resource Science, Kanagawa 230-0045, Japan.
12
JST PRESTO, Ikoma 630-0192, Japan.

Abstract

Osmotic stress caused by drought, salt or cold decreases plant fitness. Acquired stress tolerance defines the ability of plants to withstand stress following an initial exposure1. We found previously that acquired osmotolerance after salt stress is widespread among Arabidopsis thaliana accessions2. Here, we identify ACQOS as the locus responsible for ACQUIRED OSMOTOLERANCE. Of its five haplotypes, only plants carrying group 1 ACQOS are impaired in acquired osmotolerance. ACQOS is identical to VICTR, encoding a nucleotide-binding leucine-rich repeat (NLR) protein3. In the absence of osmotic stress, group 1 ACQOS contributes to bacterial resistance. In its presence, ACQOS causes detrimental autoimmunity, thereby reducing osmotolerance. Analysis of natural variation at the ACQOS locus suggests that functional and non-functional ACQOS alleles are being maintained due to a trade-off between biotic and abiotic stress adaptation. Thus, polymorphism in certain plant NLR genes might be influenced by competing environmental stresses.

PMID:
28548656
DOI:
10.1038/nplants.2017.72
[Indexed for MEDLINE]

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