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Distribution and Transmission of Iris yellow spot virus.
Iris yellow spot virus (IYSV), a new tospovirus associated with a disease in onion (Allium cepa) that is known to growers in Israel as "straw bleaching," was identified and further characterized byExpand
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A point mutation in the coat protein abolishes aphid transmissibility of a potyvirus.
A nonaphid transmissible (NAT) variant of tobacco vein mottling virus (TVMV) was used to test the hypothesis that the viral coat protein (CP) plays a role in determining aphid transmissibility.Expand
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Mutations in the HC-Pro gene of zucchini yellow mosaic potyvirus: effects on aphid transmission and binding to purified virions.
Transmission of zucchini yellow mosaic virus (ZYMV) by aphids was examined by introducing mutations within the highly conserved proline-threonine-lysine (PTK) motif of the helper component proteinaseExpand
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Mutations in the helper component protease gene of zucchini yellow mosaic virus affect its ability to mediate aphid transmissibility.
The nucleotide sequence of the helper component protease (HC-Pro) genes of three zucchini yellow mosaic virus (ZYMV) strains has been compared with that of a helper-deficient strain of ZYMV-HC. TheExpand
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Iris Yellow Spot Tospovirus Detected in Onion (Allium cepa) in Israel.
During March 1997, 20 to 30% of field-grown onion (Allium cepa), observed in Bet Shean Valley, Israel, had unusual viral symptoms of straw-colored ringspots on leaves and flower stalks. Leaf samplesExpand
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Epidemiological risks from mixed virus infections and transgenic plants expressing viral genes.
Publisher Summary This chapter focuses on the epidemiological risks from mixed virus infections and transgenic plants expressing viral genes. Several types of interaction may occur between a virusExpand
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Lisianthus Leaf Necrosis: A New Disease of Lisianthus Caused by Iris yellow spot virus.
Unusual viral symptoms were seen on lisianthus (Eustoma russellianum) grown in the Besor area in Israel. Symptoms included necrotic spots and rings on leaves and systemic necrosis. PreliminaryExpand
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Particle bombardment drastically increases the infectivity of cloned DNA of zucchini yellow mosaic potyvirus.
An infectious full-length cDNA clone of the RNA genome of the potyvirus zucchini yellow mosaic virus (ZYMV) was constructed under the control of the cauliflower mosaic virus 35S promoter. All squash,Expand
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Plant Virus Transmission by Insects
12 paginas, 5 figuras, y 2 tablas Acknowledgements In memorial of Prof. Michael Thresh, for his outstanding contributions in the field of Plant Virus Epidemiology
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Effect of endotoxic compounds isolated fromVerticillium lecanii on the sweetpotato whitefly,Bemisia tabaci
Toxic products extracted by methanol from intact mycelia ofVerticillium lecanii were tested for their toxicity to eggs, larvae, pupae and adults ofBemisia tabaci and additional insects. All stagesExpand
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