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Main Title Effect of Stress and Non-Stress Conditions Upon the Interaction of Plectonema Boryanum and the LPP-Phycoviruses.
Author Canno, Robert E. ;
CORP Author Delaware Univ., Newark. Dept. of Biological Sciences.
Year Published 1973
Report Number OWRR-A-016-DEL; 05960,; A-016-DEL(4)
Stock Number PB-230 456
Additional Subjects Aquatic microbiology ; Algae ; Plant viruses ; Stress(Physiology) ; Cyanophyta ; Antibiotics ; Metals ; Nutrients ; Aquatic microorganisms ; Aquatic plants ; Theses ; Plectonema boryanum ; LPP phycoviruses ; Lysogeny ; Host parasite relations ; Water pollution effects(Animals)
Library Call Number Additional Info Location Last
NTIS  PB-230 456 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 46p
Lysogeny was established in Plectonema boryanum, a filamentous blue-green alga, by LPP-1D and LPP-2 phycoviruses after treatment of the alga with antibiotics, heavy metal, and nutrient limitation. Mitomycin C induction and viral neutralization confirm lysogeny. Infection of antibiotic treated cells by LPP-1 virus failed to establish lysogeny, indicating that LPP-1 is a virulent phycovirus while LPP-1D and LPP-2 were found to be temperate viruses. Continuous culture techniques were also used to study long-term population interactions of Plectonema and the LPP-viruses. After LPP-1 infection of sensitive algae, three oscillations occur in cell density with concomitant increases in virus before final stabilization of both algal and phycoviral populations. After LPP-1D and LPP-2 infection, only one fall in cell density occurs with a burst of virus particles. Resistant algae always repopulated; lysogeny was never established in chemostat experiments.