EPPO Global Database

Citrus tristeza virus(CTV000)

Distribution details in Portugal

Current pest situation evaluated by EPPO on the basis of information dated 2017: Present, restricted distribution
Pest status declared by NPPO: Present, only in some parts of the Member State concerned, under eradication (2017-12)
From CABI Disease map 289 (1998): Present, few occurrences
Intercepted only, in 1988 in imported citrus plants. The identification was based on serological tests (ISEM and ELISA). Has not otherwise occurred in PT.

EPPO Reporting Service (1995/07) : the presence of the vector Toxoptera citricida having been recorded in Madeira, there was a possibility that citrus tristeza closterovirus might have been introduced also. Extensive testing has given negative results.

EPPO Reporting Service (1995/95) : two foci in the Algarve, and a few infected plants in Madeira. Preliminary indications suggest that eradication was successful.

A survey conducted in 1995 covered 420 citrus sites all over the country and 2656 samples serologically tested. The virus was found at 7 sites, and eradication measures were applied.

EPPO Reporting Service (2018/024) : 2 outbreaks recorded in 2017 on citrus trees in urban areas. Under eradication.
* Brunt, A.; Crabtree, K.; Dallwitz, M. Gibbs, A.; Watson, L. (1996) Viruses of plants, 409-411. CAB International, Wallingford, UK.

* NPPO of Portugal (1994-12, 1995-04, 2017-08, 2017-12).

* Silva G, Nolasco G (2013) Epidemiological situation of Citrus tristeza virus in mainland Portugal. Phytopathologia Mediterranea 52(3), 472-477.
------- Except for isolated cases found in backyard trees or small orchards in the north and central Portugal, CTV is present in the major citrus producing zones (Algarve).
Situation in neighbouring countries
Country State Status
Spain Present, widespread view...