Description

The trifoliate orange, Citrus trifoliata (syn.Poncirus trifoliata), is a member of the family Rutaceae. Whether the trifoliate oranges should be considered to belong to their own genus, Poncirus, or be included in the genus Citrus is debated. The species is unusual among citrus for having deciduous, compound leaves and pubescent (downy) fruit.

It is native to northern China and Korea, and is also known as the Japanese bitter-orange (karatachi), hardy orange or Chinese bitter orange.

The plant is a fairly cold-hardy citrus (USDA zone 6) and will tolerate moderate frost and snow, making a large shrub or small tree 4–8 m (13–26 ft) tall. Because of its relative hardiness, citrus grafted onto Citrus trifoliata are usually hardier than when grown on their own roots.

Whole Genomes

Whole Genome Sequences & Annotations for Citrus trifoliata

• Citrus trifoliata ASM1835013v1

S genes

Citrus trifoliata ASM1835013v1 S genes

Query	Chr	Size(bp)	Coordinates	BLASTn Hit	BLASTn %ID	Domain
SLF1	chr7_ZK8	21477625	20096284-20097384	ASM2964120v1, SLF1-2	98.183	F-box; F_box_assoc
SLF2	chr7_ZK8	21477625	20099121-20100245	PP719841.1, S30-SLF2	96.178	F-box; F_box_assoc
SLF3	chr7_ZK8	21477625	20161181-20162281	PB533_SCSK_HAP2, SLF3	95.924	F-box; F_box_assoc
SLF4	chr7_ZK8	21477625	20165826-20166941	PP719843.1, S30-SLF4	93.548	F-box; F_box_assoc
SLF5	chr7_ZK8	21477625	20190703-20189576	PP719830.1, S2-SLF5	87.433	F-box; F_box_assoc
SLF9	chr7_ZK8	21477625	20224035-20222911	PB533_SCSK_HAP2, SLF9	91.133	F-box; F_box_assoc
SLF6	chr7_ZK8	21477625	20259439-20260575	ASM2964120v1, SLF6	88.506	F-box; F_box_assoc
SLF7	chr7_ZK8	21477625	20292206-20291076	PP719832.1, S2-SLF7	89.92	F-box; F_box_assoc
SLF8	chr7_ZK8	21477625	20313045-20314184	ASM2964120v1, SLF8	95.066	F-box; F_box_assoc
SLF10	chr7_ZK8	21477625	20335102-20336247	ASM2964120v1, SLF10	99.215	F-box; F_box_assoc
SLF11ψ	chr7_ZK8	21477625	20338687-20337513	ASM2964120v1, SLF11-2	98.98	F-box; F_box_assoc
SLF12	chr7_ZK8	21477625	20342845-20341721	PP719852.1, S30-SLF12	96.533	F-box; F_box_assoc
SLF13	chr7_ZK8	21477625	20354308-20355384	ASM2964120v1, SLF13	99.257	F-box; F_box_assoc
SLF3-2	chr7_ZK8	21477625	20420999-20422120	PP719828.1, S2-SLF3	98.841	F-box; F_box_assoc
SLF4-2	chr7_ZK8	21477625	20436136-20437239	PP719829.1, S2-SLF4	99.366	F-box; F_box_assoc
SLF5-2	chr7_ZK8	21477625	20453124-20452000	PP719830.1, S2-SLF5	93.956	F-box; F_box_assoc
SLF6-2	chr7_ZK8	21477625	20480127-20479003	PP719831.1, S2-SLF6	93.789	F-box; F_box_assoc
SLF7-2	chr7_ZK8	21477625	20492378-20491248	PP719832.1, S2-SLF7	92.75	F-box; F_box_assoc
SLF9-2	chr7_ZK8	21477625	20494954-20496096	ASM2964120v1, SLF9	92.913	F-box; F_box_assoc
SLF8-2	chr7_ZK8	21477625	20500668-20501807	ASM2964120v1, SLF8-2	98.421	F-box; F_box_assoc
SLF10-2	chr7_ZK8	21477625	20523585-20524730	ASM2964120v1, SLF10	98.866	F-box; F_box_assoc
SLF11-2	chr7_ZK8	21477625	20527280-20526105	ASM2964120v1, SLF11	98.724	F-box; F_box_assoc
SLF12-2	chr7_ZK8	21477625	20531427-20530306	ASM2964120v1, SLF12	99.287	F-box; F_box_assoc
SLF13-2	chr7_ZK8	21477625	20542919-20543995	ASM2964120v1, SLF13	99.35	F-box; F_box_assoc
S-RNase-1	chr7_ZK8	21477625	20175555-20175313, 20175211-20174759	OR359668.1, S31-RNase	99.1	Ribonuclease T2
S-RNase-2	chr7_ZK8	21477625	20469272-20469526, 20469618-20470061	OQ672696.1, S2-RNase	100	Ribonuclease T2

Downloads

The Citrus trifoliata S gene sequences are available in FASTA format.

CDS and Protein (FASTA file)

S-gene_Citrus_trifoliata

Publications

Peng Z, Bredeson JV, Wu GA, Shu S, Rawat N, Du D, Parajuli S, Yu Q, You Q, Rokhsar DS, Gmitter FG Jr, Deng Z. A chromosome-scale reference genome of trifoliate orange (Poncirus trifoliata) provides insights into disease resistance, cold tolerance and genome evolution in Citrus. Plant J. 2020 Dec;104(5):1215-1232. doi: 10.1111/tpj.14993.

Huang Y, Xu Y, Jiang X, Yu H, Jia H, Tan C, Hu G, Hu Y, Rao MJ, Deng X, Xu Q. Genome of a citrus rootstock and global DNA demethylation caused by heterografting. Hortic Res. 2021 Apr 1;8(1):69. doi: 10.1038/s41438-021-00505-2.