Description

Solanum arcanum is a species of nightshade, commonly called the "wild tomato," endemic to Peru.

The wild tomato is a perennial plant, woody at the base, being up to 1 metre (3.3 ft) or more in diameter and up to 1m tall. Its stem is between 7 and 12 millimetres (0.28 and 0.47 in) in diameter at its base, often hollow, green, glabrous to variously pubescent with a mixture of simple uniseriate trichomes.

Its sympodial units are 2-foliate; internodes being between 2 and 6 centimetres (0.79 and 2.36 in). Its leaves are interrupted imparipinnate, green to pale beneath, glabrous to sparsely short pubescent with a mixture of simple uniseriate trichomes, some populations lacking trichomes. The petiolule is between 0.5 and 1 centimetre (0.20 and 0.39 in).

Inflorescences are between 6 and 20 centimetres (2.4 and 7.9 in) in size, simple, with 5–20 flowers, ebracteate or nearly all the nodes bracteate; peduncle between 3.5 and 10 centimetres (1.4 and 3.9 in), glabrous and minutely glandular to densely velvety pubescent with intermixed longer patent trichomes like those of the stems. The pedicels are between 1.1 and 1.7 centimetres (0.43 and 0.67 in), articulated at the middle or in the distal half. Buds are conical, straight, approximately half way exerted from the calyx. Flowers with the calyx tube are minute, the lobes lanceolate; corolla is between 1.8 and 2 centimetres (0.71 and 0.79 in), pentagonal and yellow.

Ovary is globose, glabrous or with a few minute trichomes at the apex; the style being between 0.8 and 1 centimetre (0.31 and 0.39 in); stigma capitate and green. The fruit is between 1 and 1.4 centimetres (0.39 and 0.55 in) in diameter, globose and green with a dark green stripe around it that may change to purple at maturity. Seeds are obovate, narrowly winged at the apex and acute at the base, pale brown, pubescent with hair-like outgrowths of the tegument cell radial walls, which give the surface a silky appearance. Chromosome number: n=12.

Whole Genomes

Whole Genome Sequences & Annotations for Solanum arcanum

• Solanum arcanum 'LA2157 (cultivar)' ASM2778914v1

S genes

Solanum arcanum 'LA2157 (cultivar)' ASM2778914v1 S genes

Query	Chromosome	Size(bp)	Coordinates	BLASTn Hit	BLASTn %ID	Domain
SLF15	CM050933.1	106,941,000	2559553-2558294	Solanum lycopersicum SL2.31, SLF15	97.857	F-box domain
SLF16	CM050933.1	106,941,000	3199511-3198330	Solanum lycopersicum SL2.31, SLF16	98.816	F-box domain
SLF22	CM050933.1	106,941,000	52319667-52318534	Solanum pennellii BK009218.1, SLF22	99.206	F-box domain
SLF1	CM050933.1	106,941,000	54413017-54411842	Solanum pennellii KJ814858.1, SLF1	92.863	F-box domain
SLF17	CM050933.1	106,941,000	54807033-54805852	Solanum peruvianum KU987615.1, SLF17	95.601	F-box domain
SLF23	CM050933.1	106,941,000	55051578-55050421	Solanum arcanum MG266244.1, SLF23	99.8	F-box domain
SLF13	CM050933.1	106,941,000	59324315-59325517	Solanum peruvianum KJ814856.1, SLF13	98.836	F-box domain
SLF12	CM050933.1	106,941,000	60157463-60158626	Solanum peruvianum KJ814855.1, SLF12	99.313	F-box domain
SLF11	CM050933.1	106,941,000	62182766-62183938	Solanum pennellii NM_001323461.1, SLF11	99.488	F-box domain
SLF9	CM050933.1	106,941,000	64616716-64617858	Solanum pimpinellifolium KJ814875.1, SLF9	98.6	F-box domain
SLF21	CM050933.1	106,941,000	65720012-65721313	Solanum peruvianum KU960914.1, SLF21	99.004	F-box domain
SLF20	CM050933.1	106,941,000	66171424-66172590	Solanum peruvianum KU960913.1, SLF20	98.458	F-box domain
SLF6Ψ	CM050933.1	106,941,000	66264850-66265990	Solanum tuberosum DM8.1, SLF6	89.295	-
SLF7	CM050933.1	106,941,000	66304940-66306109	Solanum habrochaites KJ814923.1, SLF7-S1	98.803	F-box domain
SLF6-2	CM050933.1	106,941,000	66989761-66990906	Solanum peruvianum KJ814850.1, SLF6	98.604	F-box domain
SLF5	CM050933.1	106,941,000	67026472-67027641	Solanum habrochaites KJ814915.1, SLF5-S1	96.667	F-box domain
SLF4	CM050933.1	106,941,000	67111648-67112814	Solanum pimpinellifolium KJ814871.1, SLF4	95.973	F-box domain
SLF2	CM050933.1	106,941,000	68077308-68076127	Solanum habrochaites KJ814908.1, SLF2-S1	98.223	F-box domain
S-RNase	CM050933.1	106,941,000	69142587-69142342, 69142228-69141803	Solanum peruvianum Z26581.1, Sn-RNase	100	Ribonuclease T2 family
SLF14Ψ	CM050933.1	106,941,000	70933172-70932066	Solanum lycopersicum KJ814903.1, SLF14	98.193	-
SLF18	CM050933.1	106,941,000	83183260-83184375	Solanum lycopersicum SL2.31, SLF18	99.104	F-box domain
SLF19	CM050933.1	106,941,000	83200173-83199064	Solanum lycopersicum SL2.31, SLF19	98.559	F-box domain

Downloads

The Solanum arcanum S gene sequences are available in FASTA format.

CDS and Protein (FASTA file)

S-gene_Solanum_arcanum

Publications

Jiang L, Ling J, Zhao J, Yang Y, Yang Y, Li Y, Jiao Y, Mao Z, Wang Y, Xie B. Chromosome-scale genome assembly-assisted identification of Mi-9 gene in Solanum arcanum accession LA2157, conferring heat-stable resistance to Meloidogyne incognita. Plant Biotechnol J. 2023 Jul;21(7):1496-1509. doi: 10.1111/pbi.14055.