| differential life history trait associations of aphids with nonpersistent viruses in cucurbits. | the diversity of vectors and fleeting nature of virus acquisition and transmission renders nonpersistent viruses a challenge to manage. we assessed the importance of noncolonizing versus colonizing vectors with a 2-yr survey of aphids and nonpersistent viruses on commercial pumpkin farms. we quantified aphid alightment using pan traps, while testing leaf samples with multiplex rt-pcr targeting cucumber mosaic virus (cmv), zucchini yellow mosaic virus (zymv), watermelon mosaic virus (wmv), and pa ... | 2015 | 26313961 |
| transmission efficiency of papaya ringspot virus by three aphid species. | the transmission efficiency of papaya ringspot virus (prsv) by three aphid vectors (i.e., aphis gossypii, a. craccivora, and myzus persicae) was studied. efficiency was measured by single-aphid inoculation, group inoculation (using five aphids), duration of virus retention, and the number of plants following a single acquisition access period (aap) to which the aphids could successfully transmit the virus. single-aphid inoculation studies indicated that m. persicae (56%) and a. gossypii (53%) we ... | 2008 | 18943221 |
| resistance gene homologues in melon are linked to genetic loci conferring disease and pest resistance. | genomic and cdna fragments with homology to known disease resistance genes (rgh fragments) were cloned from cucumis melo using degenerate-primer pcr. fifteen homologues of the nbs-lrr gene family have been isolated. the nbs-lrr homologues show high divergence and, based on the partial nbs-fragment sequences, appear to include members of the two major subfamilies that have been described in dicot plants, one that possesses a tir-protein element and one that lacks such a domain. genomic organizati ... | 2002 | 12582612 |