New data on diseases and nematodes of quarantine importance
By browsing through the literature, the EPPO Secretariat has noted the following items of interest concerning several pathogens and nematodes of quarantine importance.
New distribution records
- Beet necrotic yellow vein furovirus (EPPO A2 quarantine pest) found in Kyrgyzstan. Review of Plant Pathology, 73, p 286, (2490).
- Puccinia horiana (EPPO A2 quarantine pest) found in the central region of Venezuela in commercial fields of Chrysanthemum. Review of Plant Pathology, 73, p 483, (3987).
- Phytophthora megasperma f. sp. glycinea (EPPO A2 quarantine pest) has been isolated in China, from diseased soybean tissues, in the provinces of Heilongjiang, Jilin and the municipality of Beijing. According to the EPPO Secretariat this is the first report of the disease in Asia. Review of Plant Pathology, 73, p 533, (4391).
- Verticillium albo-atrum (EPPO A2 quarantine pest) has been detected for the first time in the majority of lucerne meadows during a survey in Hokkaido (JP). Yield losses up to 30;% have been observed on susceptible cultivars. Review of Plant Pathology, 74, p 256, (2050).
Detailed records
- Severe infections caused by beet leaf curl rhabdovirus (EPPO A2 quarantine pest) have been observed in 1993 in Poland, after an interval of many years without the disease. This report confirms earlier data on the possible occurrence of this virus in Poland. Review of Plant Pathology, 74, p 284, (2265).
- Bursaphelenchus xylophilus (EPPO A1 quarantine pest) has been found in Shenzhen (near Guangzhou) in China. The EPPO Secretariat had previously no data on the occurrence of the pine wood nematode in this province of China (Guangdong). However, it must be noted that Shenzhen is adjoining Hong Kong where pine wood nematode is present. Nematological Abstracts, 63, p 149 (1287).
- Clavibacter michiganensis subsp. michiganensis and Xanthomonas campestris pv. vesicatoria (both EPPO A2 quarantine pests) are reported from tomatoes grown in glasshouses in Poland. These reports confirm earlier data on the possible presence of these two bacteria in Poland. Review of Plant Pathology, 74, p 116, (970).
- Cronartium himalayense (EPPO A1 quarantine pest) has reached epidemic levels on chir pine (Pinus roxburghii) in Pauri and Tehri Garhwal regions in Uttar Pradesh, in India, according to a survey carried out in 1981-1992. Review of Plant Pathology, 73, p 565, (4652).
- Ditylenchus dipsaci (EPPO A2 quarantine pest) has been identified on onions grown in the province of Santa Catarina, in Brazil. Nematological Abstracts, 63, p 169 (1482).
- Nacobbus aberrans (EPPO A1 quarantine pest) has been found for the first time in the south east of Buenos Aires in Argentina during a survey conducted in potato fields. Infested potatoes were deriving from certified seed potatoes originating from Tucumán (highlands). Nematological Abstracts, 63, p 167 (1465).
- Plasmopara halstedii (EU Annex II/A2) has been reported for the first time on sunflowers in Kansas (US). Review of Plant Pathology, 73, p 555, (4572).
New host records
- Alstroemeria spp. has been reported for the first time as a host of tomato spotted wilt tospovirus (potential EPPO A2 quarantine pest) in Italy. Affected plants showed chlorotic and yellow rings on the leaves. Review of Plant Pathology, 74, p 212, (1734).
- Strawberry latent ringspot nepovirus (EU Annex II/A2) has been isolated for the first time from flowering cherry (Prunus serrulata sensu lato) in New Zealand. Review of Plant Pathology, 73, p 914, (7411).
Sources
EPPO Secretariat, Paris (1995-06).