| Genus | Malus |
| Species | fusca |
| Common Name | Oregon crabapple and Pacific crabapple |
| Abbreviation | M. fusca |
| Ploidy | Diploid |
| Chromosome Number | 2n = 34 |
| Genome Size | 680 Mb |
| Genome Assemblies | 5 |
| Cross Reference | NCBI taxon: 106553 |
Organism Image

Malus fusca, with the common names Oregon crabapple and Pacific crabapple, is a species of crabapple native to western North America.
Malus fusca is a deciduous tree growing up to 13 metres (43 feet) tall, with a trunk 20–25 centimetres (8–10 inches) thick. The leaves are 5–8 cm (2–3 in) long, dark green above, and both pale and fibrous beneath; they turn bright orange to red in autumn.
The flowers are white or pale pink, blooming in spring. The fruits are small round apple-shaped pomes, about 2 cm (3⁄4 in) long and from red to yellow-green in colour. They may stay on the tree until winter.
The trees can reach at least 100 years of age.
Malus fusca Genome_v1.0 S genes
| Query | Chr | Size(bp) | Coordinates | BLASTn Hit | BLASTn %ID | Domain |
| SFBB.XVI | Chr17 | 35982444 | 31946765-31947952 | MdSFBB.XVI-S9 | 99.24 | F-box; F_box_assoc |
| SFBB.XVII | Chr17 | 35982444 | 31982165-31980960 | MdSFBB.XVII-S9 | 98.92 | F-box; F_box_assoc |
| SFBB.XIV | Chr17 | 35982444 | 31984434-31985639 | MdSFBB.XIV-S9 | 99.25 | F-box; F_box_assoc |
| SFBB.Ib | Chr17 | 35982444 | 32038832-32037627 | MdSFBB.Ib-S9 | 99.25 | F-box; F_box_assoc |
| SFBB.VI | Chr17 | 35982444 | 32072753-32071575 | MdSFBB.VI-S9 | 97.54 | F-box; F_box_assoc |
| SFBB.III | Chr17 | 35982444 | 32154207-32155388 | MdSFBB.III-S9 | 98.48 | F-box; F_box_assoc |
| SFBB.II | Chr17 | 35982444 | 32204855-32206048 | MdSFBB.II-S9 | 96.7 | F-box; F_box_assoc |
| SFBB.IV | Chr17 | 35982444 | 32210333-32211517 | MdSFBB.IV-S9 | 97.63 | F-box; F_box_assoc |
| SFBB.XI | Chr17 | 35982444 | 32272707-32271522 | MdSFBB.XI-S9 | 95.87 | F-box; F_box_assoc |
| SFBB.Ia | Chr17 | 35982444 | 32391453-32392655 | MdSFBB.Ib-S9 | 94.93 | F-box; F_box_assoc |
| SFBB.Ic | Chr17 | 35982444 | 32507823-32506621 | MdSFBB.Ia-S9 | 90.61 | F-box; F_box_assoc |
| SFBB.XII | Chr17 | 35982444 | 32663508-32664686 | MdSFBB.XII-S9 | 90.09 | F-box; F_box_assoc |
| SFBB.XIb | Chr17 | 35982444 | 32771736-32770561 | MdSFBB.XI-S9 | 91.45 | F-box; F_box_assoc |
| SFBB.V | Chr17 | 35982444 | 32922201-32921023 | MdSFBB.V-S9 | 97.37 | F-box; F_box_assoc |
| SFBB.VII | Chr17 | 35982444 | 33000342-32999164 | MdSFBB.VII-S9 | 95.42 | F-box; F_box_assoc |
| SFBB.XIX | Chr17 | 35982444 | 33069853-33068621 | PbrSFBB.XIX-S17 | 97.57 | F-box; F_box_assoc |
| SFBB.XVIII | Chr17 | 35982444 | 33090986-33089802 | MdSFBB.XVIII-S9 | 95.61 | F-box; F_box_assoc |
| SFBB.VIII | Chr17 | 35982444 | 33151217-33150027 | MdSFBB.VIII.1-S9 | 97.73 | F-box; F_box_assoc |
| SFBB.XXI | Chr17 | 35982444 | 33974141-33975490 | MdSFBB.XXI-S9 | 98.74 | F-box; F_box_assoc |
| S-RNaseψ | Chr17 | 35982444 | 32679322-32679077,32678989-32678462 | MG598497.1, S11-RNase | 99.05 | - |
The Malus fusca S gene sequences are available in FASTA format.
| CDS and Protein (FASTA file) | S-gene_Malus_fusca |
Mansfeld BN, Yocca A, Ou S, Harkess A, Burchard E, Gutierrez B, van Nocker S, Gottschalk C. A haplotype resolved chromosome-scale assembly of North American wild apple Malus fusca and comparative genomics of the fire blight Mfu10 locus. Plant J. 2023 Nov;116(4):989-1002. doi: 10.1111/tpj.16433.