Ourmia melon virus (OuMV), a virus with novel properties found infecting melon in the Iranian province of Ourmia, has been further studied. Seed transmission. DAS-ELISA was used to assess seed transmission in seedlings in experimentally infected plants. Transmission in Nicotiana benthamiana, in 4 seedlings out of 240 tested. As in the previously reported case of N. megalosiphon (10 plants infected out of 670 tested), no clear symptoms were observed in the infected plants, although virus concentrations were not particularly low. No transmission was detected in 130 N. clevelandii, 316 petunia, 102 tornato, and 102 tobacco cv. "White Burley" seedlings. Search for vectors. Transmission tests using the mealybug Pseudococcus citri and the whitefly Bemisia tabaci were negative. P. citri were fed for 1 to 3 weeks on infected N. clevelandii and then transfered in mass to 13 healthy N. clevelandii and kept till the end of their lives. 8. tabaci were reared on OuMV infected rnelon plants and then transferred in mass to 10 melon plants and 8 cucumber plants (20-40 individuals per plant). We have previously reported failure to transmit OuMV by aphids, Trialeurodes vaporariorum and Tetranychus urticae mites. Transmission throgh dodder. Cuscuta campestris transmitted OUMV from melon to melon, in 8 plants out of 14 tested. Experirnental host range On 4 soybean cvs, OUMV caused severe systemic disease. Tobacco cv "White Burley", first reported as a local lesion host, also developed systemic chlorotic-necrotic ringspots. Attempts to infect apricot, peach, and Prunus cerasifera, either by sap inoculation or by grafting, were unsuccessful. These tests were done because Epirus cherry virus stures many properties with OuMV. Occurrence of OuMV in the original area. Forty six desiccated cucurbit samples were sent in 1987 from Ourmia to Torino. OuMV was detected in 11 samples.
OURMIA MELON VIRUS: UPDATE ON ITS BIOLOGY
P Caciagli;M Vecchiati;
1989
Abstract
Ourmia melon virus (OuMV), a virus with novel properties found infecting melon in the Iranian province of Ourmia, has been further studied. Seed transmission. DAS-ELISA was used to assess seed transmission in seedlings in experimentally infected plants. Transmission in Nicotiana benthamiana, in 4 seedlings out of 240 tested. As in the previously reported case of N. megalosiphon (10 plants infected out of 670 tested), no clear symptoms were observed in the infected plants, although virus concentrations were not particularly low. No transmission was detected in 130 N. clevelandii, 316 petunia, 102 tornato, and 102 tobacco cv. "White Burley" seedlings. Search for vectors. Transmission tests using the mealybug Pseudococcus citri and the whitefly Bemisia tabaci were negative. P. citri were fed for 1 to 3 weeks on infected N. clevelandii and then transfered in mass to 13 healthy N. clevelandii and kept till the end of their lives. 8. tabaci were reared on OuMV infected rnelon plants and then transferred in mass to 10 melon plants and 8 cucumber plants (20-40 individuals per plant). We have previously reported failure to transmit OuMV by aphids, Trialeurodes vaporariorum and Tetranychus urticae mites. Transmission throgh dodder. Cuscuta campestris transmitted OUMV from melon to melon, in 8 plants out of 14 tested. Experirnental host range On 4 soybean cvs, OUMV caused severe systemic disease. Tobacco cv "White Burley", first reported as a local lesion host, also developed systemic chlorotic-necrotic ringspots. Attempts to infect apricot, peach, and Prunus cerasifera, either by sap inoculation or by grafting, were unsuccessful. These tests were done because Epirus cherry virus stures many properties with OuMV. Occurrence of OuMV in the original area. Forty six desiccated cucurbit samples were sent in 1987 from Ourmia to Torino. OuMV was detected in 11 samples.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
