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  • 1
    Digitale Medien
    Digitale Medien
    Studies on the fungal phytotoxin victorin: Structures of three novel amino acids from the acid hydrolyzate (1985)
    Springer
    Cellular and molecular life sciences 41 (1985), S. 1370-1374 
    Details
    ISSN: 1420-9071
    Schlagwort(e): Cochliobolus victoriae ; Helminthosporium ; Bipolaris ; Avena
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Medizin
    Notizen: Summary The host-selective phytotoxin victorin, produced by the fungusCochliobolus victoriae, was found to be at least partially peptidic in nature, and did not contain victoxinine. The exact mass of the M-H ion was measured by FABMS as 795.1877. Derivatives of three major acid hydrolysis products were isolated. The structures of the corresponding amino acids were assigned as 2S,3R-3-hydroxyleucine, 5,5-dichloroleucine, and 3-hydroxylysine. A into victorin by the fungus in vivo.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01949994
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  • 2
    Digitale Medien
    Digitale Medien
    Improved resistance to bacterial soft rot by protoplast fusion between Brassica rapa and B. oleracea (2000)
    Springer
    Theoretical and applied genetics 100 (2000), S. 810-819 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Key words Bacterial soft rot ; Disease resistance ; Chinese cabbage ; Protoplast fusion ; Brassica rapa ; B. oleracea ; B. napus ; Erwinia carotovora subsp. carotovora
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract  Erwinia soft rot is a destructive disease of Brassica rapa vegetables. Reliable sources of resistance and control methods are limited, so development of highly resistant breeding lines is desirable. Protoplasts from B. rapa and B. oleracea genotypes selected for resistance to soft rot were fused in order to combine different sources of resistance. Twelve somatic hybrids (synthetic B. napus) were obtained and confirmed by morphology, nuclear DNA content, and RAPD analysis. They were normal looking plants that easily set seeds following self-pollination and backcrossing to B. rapa. Assays of detached leaves or seedlings inoculated in a mist-chamber showed that most somatic hybrids had lower disease severity ratings than the B. rapa fusion partner and a commercial variety of B. napus. Some progeny from selfing or backcrossing of somatic hybrids to B. rapa showed much more resistance than either fusion partner. The offspring populations of the somatic hybrids (F1–S1 and F1–BC1) clearly moved to the resistant direction compared to the parents; the percentage of resistant plants increased from 21% (average of parents) to 36% (F1–S1) and 48% (F1–BC1). These results suggest that it may be possible to obtain highly resistant B. rapa lines by further backcrossing and selection.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s001220051356
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