Sonja Tancic Zivanov

Dr. Sonja Tancic Zivanov

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Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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13 August 2019 in Journal of Plant Diseases and Protection
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Sonja Tancic ZivanovSonja Tancic Zivanov
Sonja Tancic Zivanov
BDBoško Dedić
Boško Dedić
ADAleksandra Dimitrijević
Aleksandra Dimitrijević
NDNenad Dušanić
Nenad Dušanić
Siniša JocićSiniša Jocić
Siniša Jocić
Dragana MiladinovićDragana Miladinović
Dragana Miladinović
1 January 2020 in Brazilian Archives of Biology and Technology
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Journal Article
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Sonja Tancic ZivanovSonja Tancic Zivanov
Sonja Tancic Zivanov
SMSladjana Medic-Pap
Sladjana Medic-Pap
DDDario Danojević
Dario Danojević
Dejan PrvulovićDejan Prvulović
Dejan Prvulović
One of the main challenges in pepper production is to enhance seed germination energy and germination, and to grow healthy nursery plants with strong root system. Trichoderma species colonize roots as they grow and provide season-long benefits to plants, which is why Trichoderma species are widely used as plant growth promoter agents and promoters of plant defence mechanisms. This study evaluated the effectiveness of seed biopriming with Trichoderma isolates for growth promotion of pepper plants in early stage and their effects on seedling physiology. Nine out of ten Trichoderma isolates positively affected root weight of pepper seedlings, while three out of ten positively affected shoot weight. Root and shoot lengths were mainly unaffected. Germination energy was positively affected by five isolates with up to 40% increase compared to the control, while germination was significantly enhanced by two isolates with up to 22% increase. Considering seedling physiology, two different strain-dependent modes of actions were expressed. Promising Trichoderma isolates induced formation and accumulation of reactive oxygen species (ROS) which acted as signal molecules that increased germination energy and germination. Positive correlation was found between pyrogallol peroxidase, superoxide dismutase, catalase activity and germination in plants treated with these isolates.
1 January 2013 in Pesticidi i fitomedicina
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Sonja Tancic ZivanovSonja Tancic Zivanov
Sonja Tancic Zivanov
JSJelica Skrobonja
Jelica Skrobonja
MLMirjana Lalosevic
Mirjana Lalosevic
RJRadivoje Jevtic
Radivoje Jevtic
MVMilos Vidic
Milos Vidic
Trichoderma species have been registered as species with important plant growth promoting potential and antagonistic effect against various phytopathogens. Trichoderma isolates originating from different soil types from the Vojvodina region (Serbia) were screened using dual culture test for their antagonistic effect against the pathogen Sclerotinia sclerotiorum. All tested isolates had high radial growth inhibition (RGI) factors of the pathogen and high colonization percentage. Growth promoting activity of Trichoderma isolates on soybean seeds was tested under glasshouse conditions. Soybean seeds were coated with suspensions of different Trichoderma isolates and seed germination percentage, root and shoot length were measured. According to data analysed in Statistica 10, using Duncan?s test, there were no significant effects on shoot length among the tested isolates, compared to the control. The four tested Trichoderma isolates showed significant positive effects on germination, root length and vigour index, while two isolates exhibited no significant effect on any of the measured parameters.
27 May 2025 in Journal of Fungi
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Ivana MitrovićIvana Mitrović
Ivana Mitrović
PČPetar Čanak
Petar Čanak
Sonja Tancic ZivanovSonja Tancic Zivanov
Sonja Tancic Zivanov
HFHunor Farkaš
Hunor Farkaš
Marko VasiljevicMarko Vasiljevic
Marko Vasiljevic
BMBojan Mitrovic
Bojan Mitrovic
Background: Maize, one of the world’s most important food and feed crops, is often threatened by fungal infections that not only reduce yields but also contaminate grains with harmful mycotoxins. Methods: This study evaluated the biocontrol potential of Trichoderma harzianum K179 as an eco-friendly alternative to synthetic fungicides for protecting maize from two major pathogens, Fusarium graminearum and Aspergillus flavus. T. harzianum K179 was cultivated in a lab-scale bioreactor, and its antifungal activity was assessed through in vitro inhibition assays and two-year field trials. During the field trial, maize ear disease severity, yield, and mycotoxin levels in maize samples were monitored to assess the efficacy of the produced Trichoderma biopreparation. Results: In laboratory tests, T. harzianum K179 significantly inhibited both target pathogens. Field trials demonstrated that seed treatments with the Trichoderma bioagent reduced ear rot severity and increased grain yield compared to untreated and chemically treated controls. Notably, maize samples from T. harzianum-treated plots contained lower concentrations of key mycotoxins, including fumonisins and aflatoxins. Conclusions: These findings highlight the usefulness of T. harzianum K179 in integrated pest management strategies, offering a sustainable solution that enhances crop safety and productivity while mitigating the environmental risks associated with chemical fungicides.
1 October 2019 in Plant Disease
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Journal Article
Open access
DŽDalibor Živanov
Dalibor Živanov
Sonja Tancic ZivanovSonja Tancic Zivanov
Sonja Tancic Zivanov
NNNevena Nagl
Nevena Nagl
AIAleksandra Ilić
Aleksandra Ilić
SKSnežana Katanski
Snežana Katanski
DMDragan Milić
Dragan Milić
Macrophomina phaseolina (Tassi.) Goid has been reported as severe pathogen of many plants worldwide (Su et al., 2001), as well as in Serbia (Tančić et al., 2012; Tančić Živanov et al., 2018). However, there has been no formal report of the M. phaseolina causing dry root rot of chickpea in Serbia. In June 2018, first symptoms were registered on affected field plants grouped in patches on approximately 10% of chickpea plants in the area of 3 acres at Rimski Šančevi, Serbia. Withering and death of aerial parts, as well as root rot were observed on chickpea plants at the V6 growth stage. Cuttings from 5 chickpea plants with symptomatic root tissue were surface disinfected with 1% NaOCl solution for 5 min, rinsed three times in sterile distilled water, air dried on sterilized filter paper and plated on potato dextrose agar (PDA) and water agar (WA) amended with 100 mg/liter streptomycin sulfate (Sigma-Aldrich). After 7 days of incubation at 28°C in the dark, isolates were preliminary identified according their...
1 January 2015 in Pesticidi i fitomedicina
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Sonja Tancic ZivanovSonja Tancic Zivanov
Sonja Tancic Zivanov
SSSlavica Stankovic
Slavica Stankovic
JLJelena Levic
Jelena Levic
VKVesna Krnjaja
Vesna Krnjaja
A total of 39 Fusarium graminearum, F. sporotrichioides, F. semitectum and F. equiseti isolates, originating from wheat and maize samples collected at 10 locations in Serbia, were analyzed by ELISA method for their potential of deoxynivalenol (DON) and zearalenone (ZEA) production under optimal laboratory conditions. Fusarium graminearum isolates with the highest intraspecies variability were the best producers of both deoxynivalenol and zearalenone. In contrast, F. equiseti isolates were the weakest producers of these two toxins. Considering the plant origin of the isolates, wheat-originating F. sporotrichioides isolates were better deoxynivalenol producers, while the maize-originating isolates produced more zearalenone. There was no clear difference in ZEA production between wheat- and maizeoriginating isolates of F. graminearum, while higher average DON concentrations were produced by F. graminearum wheat-originating isolates. Negative correlation was detected between the production of deoxynivalenol and zearalenone by various Fusarium spp.