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Review
, 24 (8), 688-699

Stronger When Together: Clustering of Plant NLR Disease Resistance Genes

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Review

Stronger When Together: Clustering of Plant NLR Disease Resistance Genes

Solveig van Wersch et al. Trends Plant Sci.

Abstract

Gene clustering is rare in eukaryotes. However, nucleotide-binding leucine-rich repeat (NLR)-encoding disease resistance (R) genes show consistent clustering in plant genomes. These arrangements are likely to provide coregulatory benefits, as suggested by growing evidence that the gene products of both paired and larger clusters of NLRs act together in triggering immunity. Head-to-head gene pairs where one of the encoded NLRs includes an integrated decoy domain appear to behave differently than clusters evolved from closely related typical NLRs. These patterns may help to explain the broad resistance that most plants have despite their finite number of R genes. By taking into consideration the relationship between genomic arrangement and function, we can improve our understanding of and ability to predict plant immune detection.

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