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Modulation of ACD6 dependent hyperimmunity by natural alleles of an Arabidopsis thaliana NLR resistance gene

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Title
Modulation of ACD6 dependent hyperimmunity by natural alleles of an Arabidopsis thaliana NLR resistance gene
Author(s)
Wangsheng Zhu; Maricris Zaidem; Anna-Lena Van de Weyer; Rafal M. Gutaker; Eunyoung ChaeI; Sang Tae Kim; Felix Bemm; Lei Li; Marco Todesco; Rebecca Schwab; Frederik Unger; Marcel Janis Beha; Monika Demar; Detlef Weigel
Publication Date
2018-09
Journal
PLOS GENETICS, v.14, no.9, pp.e1007628
Publisher
PUBLIC LIBRARY SCIENCE
Abstract
Plants defend themselves against pathogens by activating an array of immune responses. Unfortunately, immunity programs may also cause unintended collateral damage to the plant itself. The quantitative disease resistance gene ACCELERATED CELL DEATH 6 (ACD6) serves to balance growth and pathogen resistance in natural populations of Arabidopsis thaliana. An autoimmune allele, ACD6-Est, which strongly reduces growth under specific laboratory conditions, is found in over 10% of wild strains. There is, however, extensive variation in the strength of the autoimmune phenotype expressed by strains with an ACD6-Est allele, indicative of genetic modifiers. Quantitative genetic analysis suggests that ACD6 activity can be modulated in diverse ways, with different strains often carrying different large-effect modifiers. One modifier is SUPPRESSOR OF NPR1-1, CONSTITUTIVE 1 (SNC1), located in a highly polymorphic cluster of nucleotide-binding domain and leucinerich repeat (NLR) immune receptor genes, which are prototypes for qualitative disease resistance genes. Allelic variation at SNC1 correlates with ACD6-Est activity in multiple accessions, and a common structural variant affecting the NL linker sequence can explain differences in SNC1 activity. Taken together, we find that an NLR gene can mask the activity of an ACD6 autoimmune allele in natural A. thaliana populations, thereby linking different arms of the plant immune system. © 2018 Zhu et al.
URI
https://pr.ibs.re.kr/handle/8788114/6189
DOI
10.1371/journal.pgen.1007628
ISSN
1553-7404
Appears in Collections:
Center for Genome Engineering(유전체 교정 연구단) > 1. Journal Papers (저널논문)
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