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Genome-wide identification of NBS resistance genes in Populus trichocarpa

Abstract : As the largest class of disease resistance R genes, the genes encoding nucleotide binding site and leucine-rich repeat proteins (“NBS-LRR genes”) play a critical role in defending plants from a multitude of pathogens and pests. The diversity of NBS-LRR genes was examined in the Populus trichocarpa draft genome sequence. The NBS class of genes in this perennial tree is large and diverse, comprised of ∼400 genes, at least twice the complement of Arabidopsis. The NBS family can be divided into multiple subfamilies with distinct domain organizations. It includes 119 Coiled-Coil-NBS-LRR genes, 64 TIR-NBS-LRR genes, 34 BED-finger-NBS-LRR, and both truncated and unusual NBS- and NBS-LRR-containing genes. The transcripts of only 34 NBS-LRR genes were detected in rust-infected and non-infected leaves using a whole-genome oligoarray. None showed an altered expression two days post inoculation.
Keywords : NBS-LRR Resistance
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Submitted on : Sunday, May 31, 2020 - 2:30:52 PM
Last modification on : Friday, February 5, 2021 - 3:40:49 AM

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Annegret Kohler, Cécile Rinaldi, Sébastien Duplessis, Marie Baucher, Danny Geelen, et al.. Genome-wide identification of NBS resistance genes in Populus trichocarpa. Plant Molecular Biology, Springer Verlag (Germany), 2008, 66 (6), pp.619-636. ⟨10.1007/s11103-008-9293-9⟩. ⟨hal-02669184⟩



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