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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Plant pathology 33 (1984), S. 0 
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Published data on the susceptibility of plant species to 18 tymoviruses were collated. These data showed that tymoviruses infected more species from the family of their natural field host than species from other families. The data also indicated that tymoviruses infected a greater proportion of species from the same primary division of the dicotyledons (crassinucellate or tenuinucelate) as their natural host than other species, but the correlation was not statistically significant.The susceptibility of 18 crassinucellate and 18 tenuinucellate test plant species to 10 tymoviruses was determined. The viruses infected about three times more plant species from the primary taxonomic division that contained the family of their field host than species from the other division; this difference was statistically significant.The separation of tymoviruses into two groups based on the taxonomic division containing their natural hosts and most of their experimental hosts correlates broadly with a classification of the tymoviruses based on the serological relationships of their particle coat proteins.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-203X
    Keywords: Key words Banana bunchy top virus ; Promoter ; Vascular expression ; Green fluorescent protein ; Intron-mediated enhancement
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The intergenic regions of banana bunchy top virus (BBTV) DNA-1 to -5 were fused to the green fluorescent protein (GFP) and uidA reporter genes and assessed for promoter activity in transgenic banana (Musa spp. cv. Bluggoe). Promoter activity associated with the BBTV-derived promoters was transgene dependent with greatest activity observed using the GFP reporter. The BBTV promoters (BT1 to BT5) directed expression primarily in vascular-associated cells, although levels of activity varied between individual promoters. Promoters BT4 and BT5 directed the highest levels of GFP expression, while activity from BT1, BT2 and BT3 promoters was considerably weaker. Intron-mediated enhancement, using the maize polyubiquitin 1 (ubi1) intron, generated a significant increase in GUS expression directed by the BBTV promoters in transgenic plants.
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  • 3
    ISSN: 1432-203X
    Keywords: Key words Musa ; Banana ; Transformation ; Microprojectile bombardment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  An effective method has been developed for the stable transformation and regeneration of Cavendish banana (Musa spp. AAA group) cv 'Grand Nain' by microprojectile bombardment. Embryogenic cell suspensions were initiated using immature male flowers as the explant. Cells were co-bombarded with the neomycin phosphotransferase (nptII) selectable marker gene under the control of a banana bunchy top virus (BBTV) promoter or the CaMV 35S promoter, and either the β-glucuronidase (uidA) reporter gene or BBTV genes under the control of the maize polyubiquitin promoter. Plants were regenerated, under selection with kanamycin, that were co-transformed with nptII and either the uidA or BBTV genes. Molecular characterisation of transformants demonstrated that the transgenes had been stably integrated into the banana genome.
    Type of Medium: Electronic Resource
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