@conference{
author = "Cvetic Antic, Tijana and Janošević, Dušica and Glamočlija, Jasmina and Mitrović, Aleksandra Lj.",
year = "2022",
abstract = "Fungi and plants interact in different ways, creating a scale of associations. Hemibiotrophic
fungi represent the most interesting group, as they use sequential biotrophic and necrotrophic infection
strategies. The co-evolution of plant and fungal life-styles has not been well characterized.
We present changes of enzymatic component of antioxidative system in succulent plant Tacitus
bellus that specifically correspond to subsequent phases (spore germination, biotrophic phase,
and necrotrophic phase) of hemibiotroph Fusarium verticillioides infection. T. bellus response to F.
verticillioides spore germination was characterized by transient increase in catalase (CAT), but decrease
in superoxide dismutase (SOD) and peroxidase (POD) activity. During biotrophic phase of F.
verticillioides infection, when hyphae spread intercellularly in epidermal and mesophyll tissue, host
antioxidative system was suppressed. The transition from biotrophic to necrotrophic phase (inter
and intracellular colonization and sporulation) triggered the host plant cells to create a highly defensive
environment: CAT, SOD and POD activities were significantly stimulated, slowing, or even
currently arresting, colonization of T. bellus mesophyll cells. CAT, showing the most pronounced
activity increase, could be suggested as the main enzyme responsible for slowing the progression
of necrotrophic phase of F. verticillioides growth. However, contrary to host CAT and SOD which
isoenzyme profile didn’t change, new highly acidic POD isoforms replaced the two mildly acidic
isoforms, suggesting their specific role in slowing the progression of infection. Presented results
add to knowledge of events and mechanisms related to hemibiotrophic fungi pathogenicity in
succulent plants grown under high relative humidity, similar to conditions in greenhouse.",
publisher = "Serbian Plant Physiology Society Institute for Biological Research “Siniša Stanković” National Institute of Republic of Serbia, University of Belgrade Faculty of Biology, University of Belgrade",
journal = "4th International Conference on Plant Biology (23rd SPPS Meeting)",
title = "Enzymatic component of antioxidative system in succulent plant Tacitus bellus as a response to hemibiotroph Fusarium verticillioides infection in vitro",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_rimsi_1820"
}
