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  • Dissolution  (1)
  • Plantago lanceolata L  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Archives of microbiology 96 (1974), S. 175-182 
    ISSN: 1432-072X
    Keywords: Ultrastructure ; Septa ; Schizophyllum ; Dissolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A strain ofSchizophyllum commune carrying a mutation in theB-mating factor (B-mut) shows septal dissolution when grown at 30° C for 2 to 3 days. The septa are intact if the organism is grown at 25° C for the same time, but begin to break down within 1 h after transfer to 30° C. At the ultrastructural level the dolipore swelling is the first part of the septal apparatus to be degraded, closely followed by the disorganization of the parenthesomes. A progressive thinning of the septal cross-wall produces an enlargement of the septal aperture sufficient to allow the passage of nuclei. It appears that degradative enzymes are probably carried to the site of septal dissolution in vesicles derived from endoplasmic reticulum in the area of the septal apparatus.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-2242
    Keywords: Cytoplasmic male sterility ; Mitochondrial DNA ; Cytoplasm-type assay ; RNA ; Plantago lanceolata L
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary To establish the feasibility of a cytoplasmtype assay based on molecular hybridizations, mitochondrial DNAs from the two male-sterile cytoplasms of Plantago lanceolata (P and R) were compared by restriction endonuclease digestion. We cloned a 1.1 kbp Eco RI-HindIII fragment from P-mtDNA (pPl-311), which on hybridization to Southern blots of Bam HI digested mtDNA and total DNA from plants with P-cytoplasm, hybridized to a specific 1.1 kbp Bam HI fragment. Hybridizations of pPl-311 to Northern blots of total RNA resulted in the detection of 1,250 and 1,100 nucleotides transcripts specific to P- and R-cytoplasm, respectively, and of a common transcript of 930 nt. Evidence was obtained for additional cytoplasmic variation within P. lanceolata populations.
    Type of Medium: Electronic Resource
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