2020
DOI: 10.1105/tpc.19.00903
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Abstract: Plant innate immunity relies on nucleotide-binding leucine-rich repeat receptors (NLRs) that recognize pathogen-derived molecules and activate downstream signaling pathways. We analyzed the variation in NLR gene copy number and identified plants with a low number of NLR genes relative to sister species. We specifically focused on four plants from two distinct lineages, one monocot lineage (Alismatales) and one eudicot lineage (Lentibulariaceae). In these lineages, the loss of NLR genes coincides with loss of t… Show more

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Cited by 64 publications
(82 citation statements)
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“…That is, 11 of the 12 aquatic plants surveyed had no more than 200 NLR genes, and nine of these had fewer than 100 NLR genes. This is consistent with the findings of a previous study, which showed convergent reductions of NLR genes among four aquatic plants in two orders (Baggs et al, 2020).…”
Section: Nlr Contraction Tends To Occur In Aquatic Parasitic and Casupporting
confidence: 93%
See 1 more Smart Citation
“…That is, 11 of the 12 aquatic plants surveyed had no more than 200 NLR genes, and nine of these had fewer than 100 NLR genes. This is consistent with the findings of a previous study, which showed convergent reductions of NLR genes among four aquatic plants in two orders (Baggs et al, 2020).…”
Section: Nlr Contraction Tends To Occur In Aquatic Parasitic and Casupporting
confidence: 93%
“…Baggs et al (2020) reported the convergent loss of EDS1, PAD4, and ADR1 in four aquatic species, and hypothesized that the plant immune system co-evolved with thedrought response system. Of the 16 species lacking the RNL and EDS1 gene families identified in the present study, eight are indeed aquatic species: Spirodela polyrhiza, Lemna minor, Zostera marina, Zostera muelleri, U. gibba, G. aurea, Cladopus chinensis, and Ceratophyllum demersum.…”
mentioning
confidence: 99%
“…Enrichment of non-synonymous variants compared to genome wide average and Waterson's diversity estimate (theta) of non-synonymous variation were calculated independently. The frequency of loss-of-function was calculated similar to previous descriptions 61,62 , where loss-of-function was defined as alleles (premature stop codons and frameshifts) resulting in disruption of at least 10% of the coding region of the canonical gene model. Genes experiencing purifying selection should exhibit lower levels of natural polymorphism than what would be predicted by mutation rate alone.…”
Section: Signatures Of Selection and Constraint From Natural Populationsmentioning
confidence: 99%
“…In accordance with the so-called “guard” model, NLRs then trigger an ETI response (Cao et al, 2014). The Arabidopsis genome encodes 160 NLR proteins (Baggs et al, 2020), of which we identified 119 genes among our data set of DEGs (84 were assigned to clusters). Among these NLR genes, about 40% clustered across four immunity clusters, cluster C21 (18 genes), C16 (14 genes), C15 (11 genes), and C7 (4 genes), and were uniquely enriched in clusters 21 ( p -value = 2.58e−07) and 16 ( p -value = 6.82e−06), both of which include genes specifically repressed in the endophyte (Supplemental Data Set 15).…”
Section: Resultsmentioning
confidence: 99%