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Plant resistance genes


Molecular Diagnosis and Diversity for Regulated Xanthomonas


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plant:strawberry

Strawberry (//Fragaria vesca//, //F. ananassa//)

Author: Inga Moročko-Bičevska (Joël F. Pothier)
Internal reviewer: Giusy D'Attoma
Expert reviewer: FIXME

Pathogen: //Xanthomonas fragariae//

Resistance gene: FaRXf1

Synonyms

NA

Source

Wild accessions US4808 (native Fragaria virginiana clone SG-89 from Minesota) and US4809 (hybrid between F. virginiana clone SG-26 from Georgia and F. x ananassa ‘Earliglow’) (Maas et al., 2002; Hartung et al., 2003; Roach et al., 2016).

Status (identified, mapped, cloned, sequenced)

QTL mapped on linkage group 6D (Roach et al., 2016).

Molecular markers

SNPs (Roach et al., 2016).

Brief description

Accessions US4808 and US4809 were identified as resistant to the four genetic clades of X. fragariae (Maas et al., 2002; Hartung et al., 2003). Introgression of the trait into commercial quality perennial-type germplasm was initiated by Roach et al. (2016). Resistance detected in two wild accessions US4808 and US4809 was found to be highly heritable and controlled by a major locus FaRXf1 on linkage group 6D (Roach et al., 2016). Annotation of the FaRXf1 region in F. vesca genome revealed the presence of several resistance-associated genes, including nucleotide-binding leucine-rich
repeat (NB-LRRs), zinc finger and serine/threonine-protein
kinase genes (Roach et al., 2016). Allelic diversity at the FaRXf1 locus is unknown.


Pathogen: //Xanthomonas arboricola// pv. //fragariae//

Resistance gene: **none**

Synonyms

NA

Source

NA

Status (identified, mapped, cloned, sequenced)

NA

Molecular markers

NA

Brief description

NA


References

Hartung JS, Gouin CC, Lewers KS, Maas JL, Hokanson S (2003). Identification of sources of resistance to bacterial angular leafspot disease of strawberry. Acta Hort. 626: 155-159. DOI: 10.17660/ActaHortic.2003.626.20

Maas JL, Gouin CC, Hokanson SC, Hartung JS (2002). Strawberry parent clones US 4808 and US 4809 resistant to bacterial angular leafspot disease caused by Xanthomonas fragariae. HortScience 37: 716-717. DOI: 10.21273/HORTSCI.37.4.716

Roach JA, Verma S, Peres NA, Jamieson AR, van de Weg WE, Bink MCAM, Bassil NV, Lee S, Whitaker VM (2016). FaRXf1: a locus conferring resistance to angular leaf spot caused by Xanthomonas fragariae in octoploid strawberry. Theor. Appl. Genet. 129: 1191-1201. DOI: 10.1007/s00122-016-2695-1

plant/strawberry.txt · Last modified: 2020/08/03 21:40 by rkoebnik