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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Plant Physiology and Plant Molecular Biology 43 (1992), S. 527-555 
    ISSN: 1040-2519
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Phytopathology 29 (1991), S. 193-217 
    ISSN: 0066-4286
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Biology
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  Peanut yellow spot virus (PYSV) represents a distinct tospovirus species based on serology and nucleic acid hybridization. The sequence of the S RNA was 2 970 nucleotides with 22 nucleotide long inverted repeats (with three mismatches) at the termini. The coding was ambisense with a long open reading frame (ORF) in each strand. The 5′-large ORF (1 440 nucleotides in the viral sense (v) strand) encoded a protein with a predicted size of 53.2 kDa that was identified as the nonstructural (NSs) protein based on 16–21% sequence identity and 42– 48% sequence similarity with other tospoviruses. A 3′ ORF (741 nucleotides) in the virus complementary (vc) sense encoded a 28.0 kDa protein that was identified as the nucleocapsid (N) gene based on immunoblot analysis of the {in vitro} expressed protein with PYSV polyclonal antiserum. The predicted N protein had 24–28% amino acid sequence identity and 44–51% sequence similarity with the members of other serogroups. In contrast to other tospoviruses, a third ORF (204 nucleotides) occurred in the vc strand, which could encode a protein with a predicted size of 7.5 kDa with two strong hydrophobic regions. The low degree of homology of N and NSs protein sequences with other serogroup members coupled with an additional ORF suggests that PYSV should be classified as a distinct species of the Tospovirus genus. This conclusion also is supported by the absence of serological cross reaction with other serogroups, and biological characteristics including thrips transmission, symptoms and host range.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  Two strains of whitefly-transmitted cowpea mild mottle virus (CPMMV) causing severe (CPMMV-S) and mild (CPMMV-M) disease symptoms in peanuts were collected from two distinct agro-ecological zones in India. The host-range of these strains was restricted to Leguminosae and Chenopodiaceae, and each could be distinguished on the basis of symptoms incited in different hosts. The 3′-terminal 2500 nucleotide sequence of the genomic RNA of both the strains was 70% identical and contains five open reading frames (ORFs). The first three (P25, P12 and P7) overlap to form a triple gene block of proteins, P32 encodes the coat protein, followed by P12 protein located at the 3′ end of the genome. Genome organization and pair-wise comparisons of amino acid sequences of proteins encoded by these ORFs with corresponding proteins of known carlaviruses and potexviruses suggest that CPMMV-S and CPMMV-M are closely related to viruses in the genus Carlavirus. Based on the data, it is concluded that CPMMV is a distinct species in the genus Carlavirus.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  The nucleocapsids purified from peanut plants systemically infected with peanut bud necrosis virus (PBNV), a member of the genus Tospovirus, contained both viral(v) and viral complementary(vc) sense L RNAs. Defective forms of L RNA containing ‘core polymerase region’ were observed. The full length L RNA of PBNV was sequenced using overlapping cDNA clones. The 8911 nucleotide L RNA contains a single open reading frame (ORF) in the vc strand, and encodes a protein of 330 kDa. At the 5′ and 3′ termini of the v sense RNA there were 247 and 32 nt untranslated regions, respectively, containing an 18 nt complementary sequence with one mismatch. Comparisons of the predicted amino acid sequence of the L protein of PBNV with other members of Bunyaviridae suggest that the L protein of PBNV is a viral polymerase. The L protein had highest identity in the ‘core-polymerase domain’ with the corresponding regions of other tospoviruses, tomato spotted wilt virus and impatiens necrotic spot virus.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Molecular genetics and genomics 145 (1976), S. 307-309 
    ISSN: 1617-4623
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary A procedure is described that permits the selection of functionally deficient, temperature sensitive mutants of tobacco mosaic virus based upon the time of local lesion formation on the appropriate host plant.
    Type of Medium: Electronic Resource
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