VIRAL DISEASES OF CROTALARIA IN HAWAII
VIRAL DISEASES OF CROTALARIA IN HAWAII
| dc.contributor.advisor | Melzer, Michael | |
| dc.contributor.author | Kong, Alexandra | |
| dc.contributor.department | Tropical Plant Pathology | |
| dc.date.accessioned | 2021-07-29T23:21:26Z | |
| dc.date.available | 2021-07-29T23:21:26Z | |
| dc.date.issued | 2021 | |
| dc.description.degree | M.S. | |
| dc.identifier.uri | http://hdl.handle.net/10125/75988 | |
| dc.subject | Plant pathology | |
| dc.title | VIRAL DISEASES OF CROTALARIA IN HAWAII | |
| dc.type | Thesis | |
| dcterms.abstract | Sunn hemp (Crotalaria juncea) is a leguminous cover crop valued for its ability torapidly accumulate biomass and fix nitrogen. In October 2016, farmers in Maui County noticed symptoms of leaf mottle, reduced seed pod numbers, and a reduction in seed yield of their sunn hemp crop. Although these symptoms are indicative of Sunn hemp mosaic virus (SHMV) infection, next generation sequencing of a dsRNA-based library revealed the presence of two viruses not yet reported in Hawaii. The first, Tobacco streak virus (TSV) is Ilarvirus previously reported in the continental United States, but not in Hawaii. The second virus is a novel viral species with notable homology to members of the genus Tobamovirus and most similar in sequence identity to SHMV. In 2018 sunn hemp samples from Poamoho with symptoms of leaf chlorosis were also sampled. Next generation sequencing of a dsRNA-based library revealed the presence of another virus not yet reported in Hawaii, the Fabavirus Broad bean wilt virus 2. A weedy sunn hemp relative, Crotalaria micans was also sampled from the Big Island and was found to be infected with the potyvirus Bean common mosaic virus. The presence of these new viruses could cause potential problems not only to the sunn hemp industry in Hawaii, but may potentially impact local agriculture. The purpose of this study was to identify the pathogen(s) responsible for the observed symptoms on C. juncea and other Crotalaria species as well as better characterize this new tobamovirus. | |
| dcterms.extent | 80 pages | |
| dcterms.language | en | |
| dcterms.publisher | University of Hawai'i at Manoa | |
| dcterms.rights | All UHM dissertations and theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission from the copyright owner. | |
| dcterms.type | Text | |
| local.identifier.alturi | http://dissertations.umi.com/hawii:10931 |
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