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CHINESE JOURNAL OF OIL CROP SCIENCES ›› 2020, Vol. 42 ›› Issue (3): 441-.doi: 10.19802/j.issn.1007-9084.2019243

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Genome-wide analysis of NBS-LRR-encoding gene in Helianthus annuus

  

  1. College of Horticulture and Plant Protection, Inner Mongolia Agricultural University, Hohhot 010019, China
  • Online:2020-06-28 Published:2020-06-08

Abstract:

 In this study, 255 NBS-encoding genes were identified in sunflower genome by bioinformatics meth⁃ods. The results showed that the candidate proteins could be classified into two groups, based on the gene structural diversity, conserved protein motifs and phylogenetic relationship analysis. We also identified physic-chemical prop⁃erties, motifs of encoded putative proteins, and physical locations of 42 NBS-LRR genes. We found that most of NBS-LRR genes were located in chromosome 4, 8 and 13, 52.4% of which were located in gene clusters. Addition⁃ally, domain prediction data showed all the proteins had NBS domain. These 42 genes shared 29.26% similarity in amino acid sequence. Expression data revealed all of six NBS genes had specific expression in disease-resistant va⁃rieties which inoculated with Puccinia helianthi. The results indicated that these genes might be involved in the sun⁃flower resistant response to rust disease stress.

Key words:  , sunflower;NBS-LRR;resistance genes;sunflower rust

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