| Primary Identifier | IPR018836 | Type | Family |
| Short Name | Necrogenic_Nec1 |
| description | The Nec1 protein has necrogenic activity on excised potato tuber tissue, and the encoding gene is highly conserved in plant-pathogenic Streptomyces spp. The G+C content of nec1 indicates lateral transfer from an unrelated taxon, but its origins are unclear. Deletion analysis of nec1 demonstrated that the 151-amino-acid C-terminal region of the Nec1 protein is sufficient to confer necrogenic activity. Streptomyces turgidiscabies containing a nec1 deletion was greatly compromised in virulence on Arabidopsis thaliana (Mouse-ear cress), Nicotiana tabacum (Common tobacco), and Raphanus sativus (Radish) seedlings. The wild-type strain, S. turgidiscabies Car8, aggressively colonized and infected the root meristem of radish, whereas the delta-nec1 mutant Car811 did not. Taken together, the data suggest that Nec1 is a secreted virulence protein with a conserved plant cell target that acts early in plant infection []. |
