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  • 1
    Digitale Medien
    Digitale Medien
    Virus infections in three marine brown algae: Feldmannia irregularis, F. simplex, and Ectocarpus siliculosus (1993)
    Springer
    Hydrobiologia 260-261 (1993), S. 37-44 
    Details
    ISSN: 1573-5117
    Schlagwort(e): Virus infection ; marine ; Phaeophyceae ; Feldmannia ; Ectocarpus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Culture studies with healthy and virus-infected isolates of Ectocarpus siliculosus, Feldmannia simplex and F. irregularis gave the following results: Virus particles are produced in deformed reproductive organs (sporangia or gametangia) of the hosts and are released into the surrounding seawater. Their infective potential is lost after several days of storage under laboratory conditions. New infections occur when gametes or spores of the host get in contact with virus particles. The virus genome enters all cells of the developing new plant via mitosis. Virus expression is variable, and in many cases the viability of the host is not impaired. Infected host plants may be partly fertile and pass the infection to their daughter plants. Meiosis of the host can eliminate the virus genome and generate healthy progeny. The genome of the Ectocarpus virus consists of dsDNA. Meiotic segregation patterns suggest an intimate association between virus genome and host chromosomes. An extra-generic host range has been demonstrated for the Ectocarpus virus. Field observations suggest that virus infections in ectocarpalean algae occur on all coasts of the world, and many or all Ectocarpus and Feldmannia populations are subject to contact with virus genomes.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00049001
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Transfer of a marine DNA virus fromEctocarpus toFeldmannia (Ectocarpales, Phaeophyceae): aberrant symptoms and restitution of the host (1993)
    Springer
    Protoplasma 175 (1993), S. 121-125 
    Details
    ISSN: 1615-6102
    Schlagwort(e): Ectocarpus ; Feldmannia ; Phaeophyceae ; DNA-virus, marine ; Intergeneric gene transfer
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Summary The marine brown algaEctocarpus siliculosus is invaded by a polyhedric virus, whose genome consists of circular, double-stranded DNA. In laboratory experiments this virus can infect a different host species,Feldmannia simplex. InfectedFeldmannia plants show severe somatic malformations. However, no functional virus particles are formed. SuchFeldmannia plants recover to resume a normal, symptom-free appearance. This result raises the possibility of intergeneric gene transfer in the natural habitat.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01385009
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
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