Quarantine plant pathogen

'Candidatus Liberibacter africanus' → Diaphorina citri → Potexvirus citriflavivenae

Source EPPO: LIBEAF Vector EPPO: DIAACI Target EPPO: CSYV00
RU A1 K-K

← To all hypotheses

Scoring

All four metrics are dimensionless. The total score is the product of specificity, host distance and confidence.

0.167
Specificity
1 / the number of pathogens on the vector — this vector carries 6 pathogens in EPPO.
0.00
Host distance
1.0 = no shared hosts · 0.5 = shared family · 0.2 = shared genus · 0.0 = shared species.
1.00
Confidence (K-K)
K = confirmed vector (1.0), P = potential (0.5); both edges are multiplied.
0.000
Total
specificity × host distance × confidence

Distribution: Potexvirus citriflavivenae

Countries with recorded presence per the EPPO Global Database (9 ISO codes).

ESINKRIRCNUSPKITTR

Host plants: Potexvirus citriflavivenae

Top 10 host taxa per EPPO; classes per EPPO host categorisation.

  • Citrus x aurantium CIDAU Major host
  • Citrus x limon CIDLI Major host
  • Malva sylvestris MALSI Wild/Weed
  • Ranunculus arvensis RANAR Wild/Weed
  • Sinapis arvensis SINAR Wild/Weed
  • Solanum nigrum SOLNI Wild/Weed
  • Citroncirus sp. CJCSS Host
  • Citrus hybrids CIDHX Host
  • Citrus hystrix CIDHY Host
  • Citrus maxima CIDGR Host

Synonyms: Potexvirus citriflavivenae

  • yellow vein of citrus
  • Citrus yellow vein agent
  • Citrus yellow vein clearing virus
  • CYVCV

Sources

'Candidatus Liberibacter africanus' ↔ Diaphorina citri

* Ajene IJ, Khami FM, van Asch B, Pietersen G, Seid N, Rwomushana I, Ombura FLO, Momanyi G, Finyange P, Rasowo BA, Tanga CM, Mohammed S, Ekesi S (2020) Distribution of Candidatus Liberibacter species in Eastern Africa, and the first report of Candidatus Liberibacter asiaticus in Kenya. Scientific Reports 10, 3919 https://doi.org/10.1038/s41598-020-60712-0

* Gottwald TR (2010). Current epidemiological understanding of citrus huanglongbing. Annual Review of Phytopathology 48, 119-139.

Diaphorina citri ↔ Potexvirus citriflavivenae

* Liu KH, Cui XJ, Zhou Y (2023) Identification of citrus yellow vein clearing virus from Diaphorina citri. Acta Phytopathologica Sinica 53(3), 546-549. (abst.)
------- first detection in Diaphorina citri. No transmission studies. 

* Bin Y, Jiang L, Zhuang A, Li M, Li J, Song Z, Zhou C, Wei T, Li Y (2026) Semipersistent transmission of citrus yellow vein clearing virus by Asian citrus psyllid: insights from field surveys and infectious clone-based studies. Phytopathology Research 8(1), 32  https://doi.org/10.1186/s42483-026-00424-x
---Diaphorina citri transmits CYVCV between citrus species, in a semipersistent manner.