Description

The lemon (Citrus x limon) is a species of small evergreen tree in the flowering plant family Rutaceae, native to Asia, primarily Northeast India (Assam), Northern Myanmar, and China.

The tree's ellipsoidal yellow fruit is used for culinary and non-culinary purposes throughout the world, primarily for its juice, which has both culinary and cleaning uses. The pulp and rind are also used in cooking and baking. The juice of the lemon is about 5-6% citric acid, with a pH of around 2.2, giving it a sour taste. The distinctive sour taste of lemon juice, derived from the citric acid, makes it a key ingredient in drinks and foods such as lemonade and lemon meringue pie.

Whole Genomes

Whole Genome Sequences & Annotations for Citrus x limon

• Citrus x limon cv. Eureka v1.0

S genes

Citrus limon cv. Eureka v1.0 S genes

Query	Chr	Size(bp)	Coordinates	BLASTn Hit	BLASTn %ID	Domain
SLF13	ChrA1	34398103	948946-947870	ASM2964120v1, SLF13	98.7	F-box; F_box_assoc
SLF12	ChrA1	34398103	957488-958609	PP719852.1, S30-SLF12	99.02	F-box; F_box_assoc
SLF11	ChrA1	34398103	961586-962761	ASM2964120v1, SLF11	98.469	F-box; F_box_assoc
SLF10	ChrA1	34398103	965182-964037	ASM2964120v1, SLF10	99.564	F-box; F_box_assoc
SLF8	ChrA1	34398103	986903-985764	ASM2964120v1, SLF8-2	97.719	F-box; F_box_assoc
SLF9	ChrA1	34398103	990683-989541	ASM2964120v1, SLF9-2	92.301	F-box; F_box_assoc
SLF7	ChrA1	34398103	993301-994431	PP719832.1, S2-SLF7	92.838	F-box; F_box_assoc
SLF6	ChrA1	34398103	999636-1000778	PP719831.1, S2-SLF6	94.144	F-box; F_box_assoc
S-RNase	ChrA1	34398103	1009492-1009238, 1009146-1008703	WWV94842.1, S2-ribonuclease	98.71	Ribonuclease T2
SLF5	ChrA1	34398103	1077414-1078538	PP719830.1, S2-SLF5	94.133	F-box; F_box_assoc
SLF4	ChrA1	34398103	1099176-1098073	PP719829.1, S2-SLF4	97.826	F-box; F_box_assoc
SLF3	ChrA1	34398103	1131767-1130646	PP719828.1, S2-SLF3	97.772	F-box; F_box_assoc
SLF2	ChrA1	34398103	1155500-1154385	PP719827.1, S2-SLF2	99.104	F-box; F_box_assoc
SLF1	ChrA1	34398103	1170737-1169637	KR363148.1, SLF_S2C	98.274	F-box; F_box_assoc
SLF13-2	ChrB1	29532049	1001794-1000718	ASM2964120v1, SLF13	98.793	F-box; F_box_assoc
SLF12-2	ChrB1	29532049	1013141-1014262	ASM2964120v1, SLF12	99.198	F-box; F_box_assoc
SLF11-2	ChrB1	29532049	1017521-1018696	PP719851.1, S30-SLF11	98.775	F-box; F_box_assoc
SLF10-2	ChrB1	29532049	1021170-1020025	ASM2964120v1, SLF10	99.476	F-box; F_box_assoc
SLF8-2	ChrB1	29532049	1042697-1041558	PP719833.1, S2-SLF8	93.158	F-box; F_box_assoc
SLF9-2	ChrB1	29532049	1046732-1045590	ASM2964120v1, SLF9	93.613	F-box; F_box_assoc
SLF7-2	ChrB1	29532049	1073108-1074238	PP719832.1, S2-SLF7	93.546	F-box; F_box_assoc
SLF6-2	ChrB1	29532049	1082912-1084048	ASM2964120v1, SLF6	91.645	F-box; F_box_assoc
SLF5-2	ChrB1	29532049	1134937-1133813	ASM2964120v1, SLF5	90.311	F-box; F_box_assoc
S-RNase-2ψ	ChrB1	29532049	1153021-1152785, 1152663-1152236	MN652912.1, SmR-ribonuclease	99.9	-
SLF4-2	ChrB1	29532049	1201507-1200386	PP719843.1, S30-SLF4	90.446	F-box; F_box_assoc
SLF3-2	ChrB1	29532049	1228378-1227266	PP719842.1, S30-SLF3	90.999	F-box; F_box_assoc
SLF2-2	ChrB1	29532049	1262459-1261365	PP719841.1, S30-SLF2	91.065	F-box; F_box_assoc

Downloads

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

CDS and Protein (FASTA file)

S-gene_Citrus_limon

Publications

Bao Y, Zeng Z, Yao W, Chen X, Jiang M, Sehrish A, Wu B, Powell CA, Chen B, Xu J, Zhang X, Zhang M. A gap-free and haplotype-resolved lemon genome provides insights into flavor synthesis and huanglongbing (HLB) tolerance. Hortic Res. 2023 Feb 14;10(4):uhad020. doi: 10.1093/hr/uhad020.

Hang Yu, Chao Zhang, Chuang Lu, Yana Wang, Congcong Ge, Guixiang Huang, Haifeng Wang, The lemon genome and DNA methylome unveil epigenetic regulation of citric acid biosynthesis during fruit development, Horticulture Research, 2024;, uhae005. https://doi.org/10.1093/hr/uhae005.

NCBI BioProject PRJNA951227. Lisbon lemon genome sequencing and assembly.

NCBI BioProject PRJNA942352. Lisbon lemon genome sequencing and assembly.