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  • Puccinia infection  (1)
  • wheat  (1)
  • Springer  (2)
  • National Academy of Sciences
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  • Springer  (2)
  • National Academy of Sciences
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  • 1
    Electronic Resource
    Electronic Resource
    Oleosomes in flag leaves of wheat; their distribution, composition and fate during senesence and rust-infection (1981)
    Springer
    Planta 152 (1981), S. 36-43 
    Details
    ISSN: 1432-2048
    Keywords: Leaf ; Oleosomes ; Puccinia infection ; Senescence (leaves) ; Triacylglycerol ; Triticum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Oleosomes, up to 14μm in diameter, were found in mesophyll and bundle sheath cells of the flag and lower leaves of wheat cv Professeur Marchal. They develop in flag leaves at least 10 d before anthesis, possibly from fatty acids secreted by the plastids, and persist in mature and senescing leaf tissue. Oleosomes are bordered with an osmiophilic layer rather than a unit membrane. The major lipids of oleosomes, isolated 20 d after anthesis, are triacylglycerols (50%) and sterol or wax exter (34%). The dominant fatty acids of both lipid classes are plamitic (16:0) and stearic (18:0) acids which accounts for the low osmiophilia of the oleosomes. The function of the oleosomes is unknown but they may act as short-term energy reserves. Oleosomes persist in leaves infected with brown rust, even in cells penetrated by haustoria. Yellowish-brown oleosomes found in senescing and rust-infected leaves may be formed by the release and coalescence of pigmented plastoglobuli.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00384982
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Sequence analysis of WIS-2-1A, a retrotransposon-like element from wheat (1992)
    Springer
    Plant molecular biology 20 (1992), S. 991-995 
    Details
    ISSN: 1573-5028
    Keywords: retrotransposon-like element ; sequence analysis ; wheat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract WIS-2-1A, a 8624 bp insertion in the Glu-1A-2 locus of chromosome 1A of wheat, consists of two 1755 bp long terminal repeats enclosing a 5114 bp internal region. No long open reading frames could be found, but inspection of the predicted amino acid sequence showed regions with homology to retrotransposon structures, including a methionine tRNA initiator binding site, a nucleotide binding domain, a protease, an integrase and a polymerase. DNA replication errors have resulted in frame-shifts in the protein coding region, suggesting that retrotransposition of WIS-2-1A, if it occurs, must be mediated by trans-acting factors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00027169
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    Paper (German National Licenses)
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