Genomic information

Here you will find a brief description of all the protein dataset that are used in GreeningDB. From this page, users can go directly to the original source of the proteome and download the protein sequences. More information regarding Citrus species can be found at the Citrus Genome Database (CGD)


Citrus spp. susceptible to HLB infection
C. clementina

Clementine, a diploid with a chromosome number of 2n=2x=18 and a genome size of 370Mb. [Wu et al., 2014]. Link to proteome [FASTA] [Phytozome]

C. sinensis

Sweet orange, a diploid with a chromosome number of 2n=2x=18 and a genome size of 380Mb. [Wu et al., 2014]. Link to proteome [FASTA] [Phytozome]

C. reticulata

Mandarin orange (tangerine), a diploid with a chromosome number of 2n=2x=18 and a genome size of 391Mb. [Wang et al., 2018]. Link to proteome [FASTA] [Citrus sinensis Annotation Project (CAP)]

C. ichangensis (Citrus cavaleriei)

Papeda, a diploid with a chromosome number of 2n=2x=18 and a genome size of 370Mb. [Wang et al., 2017]. Link to proteome [FASTA] [Citrus sinensis Annotation Project (CAP)]

C. grandis (Citrus maxima)

Pomelo (pummelo), a diploid with a chromosome number of 2n=2x=18 and a genome size of 380Mb. [Wang et al., 2017]. Link to proteome [FASTA] [Citrus sinensis Annotation Project (CAP)]

C. medica

Citron, a diploid with a chromosome number of 2n=2x=18 and a genome size of 407Mb. [Wang et al., 2017]. Link to proteome [FASTA] [Citrus sinensis Annotation Project (CAP)]

Atalantia buxifolia (Citrus buxifolia)

Chinese box orange, a diploid with a chromosome number of 2n=2x=18 and a genome size of 328Mb. [Wang et al., 2017]. Link to proteome [FASTA] [Citrus sinensis Annotation Project (CAP)]

Fortunella hindsii

Hongkong kumquat, a tetraploid with a chromosome number of 2n=4x=36 and a genome size around 370 Mb. [Zhu et al., 2019]. Link to proteome [FASTA] [Citrus sinensis Annotation Project (CAP)]


Citrus spp. tolerant to HLB infection
Clausena excavata

A medicinal plant in many Asian countries. Clausena is a genus of flowering plants in the citrus family. [Bae et al., 2018]. Link to proteome [FASTA] [NCBI]

Poncirus trifoliata (Citrus trifoliata)

Hardy orange, a diploid with a chromosome number of 2n=2x=18 and a genome size of 370Mb. [Unigene Assembly Pipeline]. Link to proteome [FASTA] [Citrus Genome Database (CGD)]


Liberibacter spp. infecting Citrus
Ca. liberibacter asiaticus str. gxpsy

The bacterium causes citrus huanglongbing, a devastating disease of citrus which results in tremendous economic losses worldwide. Gram-negative bacteria with a total genome size of 1.26824 Mb; 1,075 proteins and a GC%:36.6 [Lin et al., 2013]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. A4

“Candidatus Liberibacter asiaticus” strain. This is an unculturable alpha-proteobacterium associated with citrus Huanglongbing (HLB, yellow shoot disease), which has been observed over a hundred years in Guangdong Province in China. Gram-negative bacteria with a total genome size of 1.23351 Mb; 1,027 proteins and a GC%:36.4 [Zheng et al., 2014]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. psy62

Candidatus Liberibacter asiaticus str. psy62. Candidatus Liberibacter asiaticus causes Huanglongbing (also called citrus greening disease) in citrus in Asia. This organism causes a lethal infection to the tree and is transmitted from tree to tree by the sap-sucking Asian citrus psyllid, Diaphorina citri. Once infected the citrus tree turns yellow (huanglongbing means yellow dragon disease) and the fruit remains green. Gram-negative bacteria with a total genome size of 1.22733 Mb; 1,021 proteins and a GC%:36.5 [Zhou et al., 2011]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. JXGC

CLas strain JXGC originated from a symptomatic citrus (Citrus reticulata Blanco cv. Ponkan) in Guangchang City of Jiangxi Province, China. Gram-negative bacteria with a total genome size of 1.22516 Mb; 1,040 proteins and a GC%:36.4 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. Ishi-1

Citrus greening by Candidatus Liberibacter asiaticus is the most destructive disease of citrus worldwide. We obtained the complete genome of the uncultured Ca. L. asiaticus Japanese strain designated Ishi-1 that lack the bacteriophage-type DNA polymerase gene. Gram-negative bacteria with a total genome size of 1.19085 Mb; 997 proteins and a GC%:36.3 [Katoh et al., 2014]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. AHCA1

Genomic research on diversity of CLas strain in California. Gram-negative bacteria with a total genome size of 1.23375 Mb; 1,010 proteins and a GC%:36.6 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. FL17

"Candidatus Liberibacter asiaticus" is associated with Citrus Huanglongbing, which is one of the most destructive disease worldwide. Gram-negative bacteria with a total genome size of 1.22725 Mb; 1,029 proteins and a GC%:36.5 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. YNJS7C

Ca. Liberibacter asiaticus strain YNJS7C was first identified in a navel orange (Citrus sinensis L. Osbeck) tree showing typical HLB symptoms in Jianshui City of Yunnan Province, China. Gram-negative bacteria with a total genome size of 1.25899 Mb; 1,073 proteins and a GC%:36.6 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. YCPsy

From microbial diversity analysis on Diaphorina citri in Guangdong Province. Gram-negative bacteria with a total genome size of 1.23365 Mb; 1,042 proteins and a GC%:36.5 [Wu et al., 2015]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. SGCA5

From a orange citrus in San Gabriel, California. Gram-negative bacteria with a total genome size of 1.20138 Mb; 1,005 proteins and a GC%:36.4 [Wu et al., 2015]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. TX2351

An “Ca. L. asiaticus” strain TX2351 directly from ACP carrying “Ca. L. asiaticus” in South Texas. “Ca. L. asiaticus” strain TX2351 was originally collected in May, 2016 by USDA-APHIS inspectors from ACP on a Mexican lime (Citrus aurantiifolia) tree showing typical HLB symptoms. Gram-negative bacteria with a total genome size of 1.252 Mb; 1,026 proteins and a GC%:36.5 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. HHCA

Candidatus Liberibacter asiaticus is associated with citrus Huanglongbing (HLB, yellow shoot disease). The disease has been observed in most citrus-producing area, including California and Texas. Gram-negative bacteria with a total genome size of 1.15062 Mb; 827 proteins and a GC%:36.5 [Zheng et al., 2014]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter asiaticus str. SGCA1

Genomic research on diversity of CLas strain in California. Gram-negative bacteria with a total genome size of 0.233414 Mb; 499 proteins and a GC%:36.3 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]


Ca. liberibacter africanus str. PTSAPSY

Candidatus Liberibacter africanus is one of three species of unculturable bacterium associated with citrus Huanglongbing disease. Gram-negative bacteria with a total genome size of 1.19223 Mb; 966 proteins and a GC%:34.5 [Lin et al., 2015]. Link to proteome [FASTA] [NCBI]


Ca. liberibacter americanus str. PW_SP

Strain obtained from dodder-infected periwinkle plants (Catharanthus roseus) grown in a screen house in Brazil. Gram-negative bacteria with a total genome size of 1.1952 Mb; 945 proteins and a GC%:31.10 [Lin et al., 2013]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter americanus str. Sao Paulo

Strain obtained from infected citrus to periwinkle using dodder and was maintained and curated at an INRA greenhouse facility at Bordeaux, France. The purpose of this study was to obtain the complete genomic DNA sequence of Ca. Liberibacter americanus (Lam) and compare it to the genomes of two different Liberibacter species: Ca. L. asiaticus (Las), with the same host range as Lam, and with Ca. L. solanacearum (Lso) with a host range on potato and tomato. The idea is to attempt to identify pathogenicity factors and/or host range determinants that were common only to the two species (Las and Lam) that attacked citrus. Gram-negative bacteria with a total genome size of 1.17607 Mb; 925 proteins and a GC%:31.10 [Wulff et al., 2014]. Link to proteome [FASTA] [NCBI]


Liberibacter spp. infecting Solanacearum
Ca. liberibacter solanacearum str. CLso-ZC1

This unculturable bacterium causes Zebra Chip disease of potato. The bacterium was identified in 2008 and named as "Candidatus Liberibacter solanacearum" The disease causes million dollar loss in U.S. potato industry. Gram-negative bacteria with a total genome size of 1.25828 Mb; 1,015 proteins and a GC%:35.2 [Lin et al., 2011]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. LsoNZ1

To provide genome sequence information to aid research into the Candidatus Liberibacter genus which includes a number of plant pathogens. Gram-negative bacteria with a total genome size of 1.31242 Mb; 1,093 proteins and a GC%:35.3 [Thompson et al., 2015]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. FIN114

This is a metagenomic sequencing project to get genome sequence of plant pathogenic bacteria, Candidatus Liberibacter solanacearum, an Finnish isolate 114. Gram-negative bacteria with a total genome size of 1.24512 Mb; 1,005 proteins and a GC%:35.2 [Wang et al., 2017]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. HenneA

Candidatus Liberibacter solanacearum haplotype A sequenced from high Lso titer potato psyllids from colony originating in South Texas, US. Gram-negative bacteria with a total genome size of 1.21136 Mb; 887 proteins and a GC%:34.9 [Thompson et al., 2015]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. RSTM

Microbial diversity on Bactericera cockerelli in California. Gram-negative bacteria with a total genome size of 1.28679 Mb; 1,083 proteins and a GC%:35.1 [Wu et al., 2015]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. FIN111

This is a metagenomic sequencing project to get genome sequence of plant pathogenic bacteria, Candidatus Liberibacter solanacearum, an Finnish isolate 111. Gram-negative bacteria with a total genome size of 1.2024 Mb; 982 proteins and a GC%:34.9 [Wang et al., 2017]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. ISR100

Genome analysis of Haplotype D of Candidatus Liberibacter solanacearum. Gram-negative bacteria with a total genome size of 1.30369 Mb; 1,088 proteins and a GC%:35.0 [Genome Sequence and Assembly Reference]. Link to proteome [FASTA] [NCBI]

Ca. liberibacter solanacearum str. R1

Candidatus Liberibacter solanacearum’ is a phloem-limited bacterium, which associated with zebra chip disease of potato. Gram-negative bacteria with a total genome size of 1.20426 Mb; 936 proteins and a GC%:35.3 [Zheng et al., 2014]. Link to proteome [FASTA] [NCBI]


Liberibacter spp. cultured
Liberibacter crescens BT-1

Bacterial isolate BT-1 genome sequencing project. Gram-negative bacteria with a total genome size of 1.50466 Mb; 1,235 proteins and a GC%:35.4 [Leonard et al., 2012]. Link to proteome [FASTA] [NCBI]


Insect vector
Diaphorina citri

Asian psyllid vector is a vector for the causative agent of Huanglongbing(HLB) or citrus greening, which threatens citrus production worldwide. The Asian citrus psyllid originated in Asia but it is now also found in parts of the Middle East, South and Central America, Mexico and the Caribbean. In the United States, this psyllid was first detected in Florida in 1998 and is now also found in Louisiana, Georgia, Arizona, South Carolina and Texas. The psyllid feeds on all varieties of citrus (e.g., oranges, grapefruit, lemons, and mandarins). Link to proteome [FASTA] [Citrus greening solutions]