Reference Report for IND82043914
| Title: | Whitefly bemisia-tabaci transmission and some properties of cowpea mild mottle virus on soybean glycine-max in thailand |
| Authors: | Iwaki, M., Thongmeearkom, P., Prommin, M. |
| Source: | Plant Dis. 1982, 65(5):365-368 |
| Abstract: | A rod-shaped virus was isolated from naturally infected soybean (G. max) plants collected at Phitsanulok, northern Thailand, in 1979. The virus caused mild mottle symptoms in soybean and was transmitted by whitefilies. B. tabaci, in a semipersistent manner, by sap inoculation and through soybean seed; it was not transmitted by the aphids Aphis craccivora or A. glycines. Among 26 plant species tested by mechanical inoculation, the virus systemically infected mainly plants of the family Leguminosae, and it produced poorly defined local lesions on inoculated leaves of Chenopodium amaranticolor. Virus particle dimensions (10-15 .times. 650-700 nm) were in the range of those of carlaviruses. In tube precipitin tests, the virus reacted with antiserum to cowpea mild mottle virus, a previously reported virus infecting legumes in Africa, and showed distant serologic relationships with carnation latent virus and chrysanthemum virus B but not with other morphologically similar viruses. Infectivity of the virus was retained in sap diluted to 10-5 but not 10-6, heated for 10 min at 70.degree. C but not 75.degree. C, held at 20.degree. C for 21 days but not 28 days. The virus contained single-stranded RNA and was identified as cowpea mild mottle virus on the basis of host range, symptomatology, particle morphology and serologic relationships. |
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