Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/48379
Title: STUDY ON CROSS PROTECTION BETWEEN HIBISCUS LATENT SINGAPORE VIRUS AND TOBACCO MOSAIC VIRUS IN NICOTIANA BENTHAMIANA
Authors: WEN YI
Keywords: cross protection, HLSV, TMV, microarray analysis, NbTOM1, NbCP2
Issue Date: 14-Aug-2013
Source: WEN YI (2013-08-14). STUDY ON CROSS PROTECTION BETWEEN HIBISCUS LATENT SINGAPORE VIRUS AND TOBACCO MOSAIC VIRUS IN NICOTIANA BENTHAMIANA. ScholarBank@NUS Repository.
Abstract: Cross protection is the phenomenon through which a mild strain virus suppresses symptoms induced by a closely related severe strain virus in infected plants. Hibiscus latent Singapore virus (HLSV) and Tobacco mosaic virus (TMV) are species within the genus Tobamovirus. HLSV protects Nicotiana benthamiana against TMV-U1 strain, inducing mild symptoms instead of severe systemic necrosis. HLSV accumulation increased in cross protected plants compared with that of single HLSV infected plants, while TMV decreased, suggesting viruses compete for host factors during replication. A microarray was conducted to monitor global host genes during cross protection. Some host genes corresponded to TMV accumulation and some host genes were up-regulated only by HLSV. NbTOM1 was chosen for competition analysis of host factors in virus replication, indicating host factors are competed by viruses. NbCP2 was up-regulated by HLSV and facilitated its accumulation, resulting in decreasing the cell death caused by TMV in cross protected plants.
URI: http://scholarbank.nus.edu.sg/handle/10635/48379
Appears in Collections:Ph.D Theses (Open)

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