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Effect of Bemisia tabaci biotype in the transmission of Tomato Yellow Leaf Curl Sardinia Virus between tomato and common weeds

AuthorsJiang, Y-X.; Blas, C. de; Bedford, I.; Nombela, Gloria ; Muñiz, Mariano
Issue Date2004
CitationSpanish Journal of Agricultural Research 2(1):115-119
AbstractThe common five weed species Datura stramonium L., Solanum nigrum L., Brassica kaber (DC), Capsella bursa-pastoris L. and Malva parviflora L., were tested for their susceptibility to an isolate of TYLCSV from Murcia, Spain (TYLCSV-ES), using the B-, Q- and S-biotypes of Bemisia tabaci (Gennadius). Both, B- and Q-biotypes were shown to transmit TYLCSV-ES from infected tomato to S. nigrum and D. stramonium and vice versa. Transmission efficiency from tomato to these weeds varied from 58.3% to 83.3%. Transmission efficiency from the infected weeds back to tomato varied from 66.7% to 100%. No significant difference between the B- and Q-biotypes was found in transmission efficiency from infected tomato to weed plants and from D. stramonium back to tomato. However, a significant difference in transmission efficiency from infected S. nigrum plants to tomato was detected between the B- and Q-biotypes. No other tested weed species were found to be infected by or host TYLCSV-ES. The S-biotype was unable to survive on tomato long enough to acquire or transmit TYLCSV-ES and could only transmit the virus from S. nigrum to S. nigrum at a very low efficiency. The implications of these results for the epidemiology of TYLCV´s in the field are discussed.
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