TY  - CONF
AU  - Živanović, Bojana
AU  - Prokić, Ljiljana
AU  - Milić Komić, Sonja
AU  - Nikolić, Nenad
AU  - Sedlarević Zorić, Ana
AU  - Vidović, Marija
AU  - Veljović Jovanović, Sonja
PY  - 2022
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1842
AB  - The objective of this study was to determine the constitutive differences in physiological, biochemical and morphological parameters between two tomato genotypes with different levels of abscisic acid (ABA) – wild type Ailsa Craig (WT) and ABA deficient mutant flacca. Due to reduced ABA biosynthesis, flacca mutant is a suitable model system for investigating the influence of endogenous leaf ABA level in response to drought in plants. Within this research, plants were grown under controlled conditions at 800 μmol m-2s-1, until the end of the vegetative phase when samples were taken. The accumulation of the most abundant soluble sugars, sorbitol, phenolic compounds, and ascorbate in the leaves, as well as the cell walls compounds, were analyzed. Lower constitutive ABA content in flacca was accompanied by two times higher stomatal conductance and similar leaf water potential. Higher content of phenolic compounds (HBAs, HCAs, flavonoids) was determined in WT plants, which was in contrast with the elevated accumulation of the epidermal flavonoids in flacca. Larger accumulation of sorbitol in WT, and of the most abundant soluble sugars (glucose, fructose and sucrose) indicate that flacca accumulates lower content of osmolytes which was opposite to the condition at low light. However, an alternative mechanism related to cell wall modulation imposed its importance in the development of plant acclimation mechanisms under stressful environmental conditions in tomato deficient in ABA. On the other hand, an elevated ascorbate redox state in flacca indicates a higher sensitivity to oxidative stress of the mutant compared to WT even in optimal environmental conditions.
PB  - 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
C3  - 4th International Conference on Plant Biology and 23rd SPPS Meeting, 6-8 October 2022, Belgrade
T1  - Comparative study of physiological, biochemical and morphological parameters in two tomato genotypes, wild type cv. Ailsa Craig and its ABA-deficient mutant flacca
SP  - 83
UR  - https://hdl.handle.net/21.15107/rcub_imagine_1842
ER  - 

@conference{
author = "Živanović, Bojana and Prokić, Ljiljana and Milić Komić, Sonja and Nikolić, Nenad and Sedlarević Zorić, Ana and Vidović, Marija and Veljović Jovanović, Sonja",
year = "2022",
abstract = "The objective of this study was to determine the constitutive differences in physiological, biochemical and morphological parameters between two tomato genotypes with different levels of abscisic acid (ABA) – wild type Ailsa Craig (WT) and ABA deficient mutant flacca. Due to reduced ABA biosynthesis, flacca mutant is a suitable model system for investigating the influence of endogenous leaf ABA level in response to drought in plants. Within this research, plants were grown under controlled conditions at 800 μmol m-2s-1, until the end of the vegetative phase when samples were taken. The accumulation of the most abundant soluble sugars, sorbitol, phenolic compounds, and ascorbate in the leaves, as well as the cell walls compounds, were analyzed. Lower constitutive ABA content in flacca was accompanied by two times higher stomatal conductance and similar leaf water potential. Higher content of phenolic compounds (HBAs, HCAs, flavonoids) was determined in WT plants, which was in contrast with the elevated accumulation of the epidermal flavonoids in flacca. Larger accumulation of sorbitol in WT, and of the most abundant soluble sugars (glucose, fructose and sucrose) indicate that flacca accumulates lower content of osmolytes which was opposite to the condition at low light. However, an alternative mechanism related to cell wall modulation imposed its importance in the development of plant acclimation mechanisms under stressful environmental conditions in tomato deficient in ABA. On the other hand, an elevated ascorbate redox state in flacca indicates a higher sensitivity to oxidative stress of the mutant compared to WT even in optimal environmental conditions.",
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 and 23rd SPPS Meeting, 6-8 October 2022, Belgrade",
title = "Comparative study of physiological, biochemical and morphological parameters in two tomato genotypes, wild type cv. Ailsa Craig and its ABA-deficient mutant flacca",
pages = "83",
url = "https://hdl.handle.net/21.15107/rcub_imagine_1842"
}

Živanović, B., Prokić, L., Milić Komić, S., Nikolić, N., Sedlarević Zorić, A., Vidović, M.,& Veljović Jovanović, S.. (2022). Comparative study of physiological, biochemical and morphological parameters in two tomato genotypes, wild type cv. Ailsa Craig and its ABA-deficient mutant flacca. in 4th International Conference on Plant Biology and 23rd SPPS Meeting, 6-8 October 2022, Belgrade
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., 83.
https://hdl.handle.net/21.15107/rcub_imagine_1842

Živanović B, Prokić L, Milić Komić S, Nikolić N, Sedlarević Zorić A, Vidović M, Veljović Jovanović S. Comparative study of physiological, biochemical and morphological parameters in two tomato genotypes, wild type cv. Ailsa Craig and its ABA-deficient mutant flacca. in 4th International Conference on Plant Biology and 23rd SPPS Meeting, 6-8 October 2022, Belgrade. 2022;:83.
https://hdl.handle.net/21.15107/rcub_imagine_1842 .

Živanović, Bojana, Prokić, Ljiljana, Milić Komić, Sonja, Nikolić, Nenad, Sedlarević Zorić, Ana, Vidović, Marija, Veljović Jovanović, Sonja, "Comparative study of physiological, biochemical and morphological parameters in two tomato genotypes, wild type cv. Ailsa Craig and its ABA-deficient mutant flacca" in 4th International Conference on Plant Biology and 23rd SPPS Meeting, 6-8 October 2022, Belgrade (2022):83,
https://hdl.handle.net/21.15107/rcub_imagine_1842 .

TY  - JOUR
AU  - Zivanović, Bojana
AU  - Komić, Sonja Milic
AU  - Tosti, Tomislav
AU  - Vidović, Marija
AU  - Prokić, Ljiljana
AU  - Veljović-Jovanović, Sonja
PY  - 2020
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/1342
AB  - Water deficit has a global impact on plant growth and crop yield. Climate changes are going to increase the intensity, duration and frequency of severe droughts, particularly in southern and south-eastern Europe, elevating the water scarcity issues. We aimed to assess the contribution of endogenous abscisic acid (ABA) in the protective mechanisms against water deficit, including stomatal conductance, relative water potential and the accumulation of osmoprotectants, as well as on growth parameters. To achieve that, we used a suitable model system, ABA-deficient tomato mutant, flacca and its parental line. Flacca mutant exhibited constitutively higher levels of soluble sugars (e.g., galactose, arabinose, sorbitol) and free amino acids (AAs) compared with the wild type (WT). Water deficit provoked the strong accumulation of proline in both genotypes, and total soluble sugars only in flacca. Upon re-watering, these osmolytes returned to the initial levels in both genotypes. Our results indicate that flacca compensated higher stomatal conductance with a higher constitutive level of free sugars and AAs. Additionally, we suggest that the accumulation of AAs, particularly proline and its precursors and specific branched-chain AAs in both, glucose and sucrose in flacca, and sorbitol in WT, could contribute to maintaining growth rate during water deficit and recovery in both tomato genotypes.
PB  - MDPI : Basel
T2  - Plants
T1  - Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid-Mediated Drought Response in Tomato
IS  - 9
SP  - 1147
VL  - 9
DO  - 10.3390/plants9091147
ER  - 

@article{
author = "Zivanović, Bojana and Komić, Sonja Milic and Tosti, Tomislav and Vidović, Marija and Prokić, Ljiljana and Veljović-Jovanović, Sonja",
year = "2020",
abstract = "Water deficit has a global impact on plant growth and crop yield. Climate changes are going to increase the intensity, duration and frequency of severe droughts, particularly in southern and south-eastern Europe, elevating the water scarcity issues. We aimed to assess the contribution of endogenous abscisic acid (ABA) in the protective mechanisms against water deficit, including stomatal conductance, relative water potential and the accumulation of osmoprotectants, as well as on growth parameters. To achieve that, we used a suitable model system, ABA-deficient tomato mutant, flacca and its parental line. Flacca mutant exhibited constitutively higher levels of soluble sugars (e.g., galactose, arabinose, sorbitol) and free amino acids (AAs) compared with the wild type (WT). Water deficit provoked the strong accumulation of proline in both genotypes, and total soluble sugars only in flacca. Upon re-watering, these osmolytes returned to the initial levels in both genotypes. Our results indicate that flacca compensated higher stomatal conductance with a higher constitutive level of free sugars and AAs. Additionally, we suggest that the accumulation of AAs, particularly proline and its precursors and specific branched-chain AAs in both, glucose and sucrose in flacca, and sorbitol in WT, could contribute to maintaining growth rate during water deficit and recovery in both tomato genotypes.",
publisher = "MDPI : Basel",
journal = "Plants",
title = "Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid-Mediated Drought Response in Tomato",
number = "9",
pages = "1147",
volume = "9",
doi = "10.3390/plants9091147"
}

Zivanović, B., Komić, S. M., Tosti, T., Vidović, M., Prokić, L.,& Veljović-Jovanović, S.. (2020). Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid-Mediated Drought Response in Tomato. in Plants
MDPI : Basel., 9(9), 1147.
https://doi.org/10.3390/plants9091147

Zivanović B, Komić SM, Tosti T, Vidović M, Prokić L, Veljović-Jovanović S. Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid-Mediated Drought Response in Tomato. in Plants. 2020;9(9):1147.
doi:10.3390/plants9091147 .

Zivanović, Bojana, Komić, Sonja Milic, Tosti, Tomislav, Vidović, Marija, Prokić, Ljiljana, Veljović-Jovanović, Sonja, "Leaf Soluble Sugars and Free Amino Acids as Important Components of Abscisic Acid-Mediated Drought Response in Tomato" in Plants, 9, no. 9 (2020):1147,
https://doi.org/10.3390/plants9091147 . .

TY  - JOUR
AU  - Vidović, Marija
AU  - Morina, Filis
AU  - Milić-Komić, S.
AU  - Vuleta, A.
AU  - Zechmann, B.
AU  - Prokić, Lj
AU  - Veljović-Jovanović, Sonja
PY  - 2016
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/937
AB  - Hydrogen peroxide is an important signalling molecule, involved in regulation of numerous metabolic processes in plants. The most important sources of H2O2 in photosynthetically active cells are chloroplasts and peroxisomes. Here we employed variegated Pelargonium zonale to characterise and compare enzymatic and non-enzymatic components of the antioxidative system in autotrophic and heterotrophic leaf tissues at (sub)cellular level under optimal growth conditions. The results revealed that both leaf tissues had specific strategies to regulate H2O2 levels. In photosynthetic cells, the redox regulatory system was based on ascorbate, and on the activities of thylakoid-bound ascorbate peroxidase (tAPX) and catalase. In this leaf tissue, ascorbate was predominantly localised in the nucleus, peroxisomes, plastids and mitochondria. On the other hand, non-photosynthetic cells contained higher glutathione content, mostly located in mitochondria. The enzymatic antioxidative system in non-photosynthetic cells relied on the ascorbate-glutathione cycle and both Mn and Cu/Zn superoxide dismutase. Interestingly, higher content of ascorbate and glutathione, and higher activities of APX in the cytosol of non-photosynthetic leaf cells compared to the photosynthetic ones, suggest the importance of this compartment in H2O2 regulation. Together, these results imply different regulation of processes linked with H2O2 signalling at subcellular level. Thus, we propose green-white variegated leaves as an excellent system for examination of redox signal transduction and redox communication between two cell types, autotrophic and heterotrophic, within the same organ.
PB  - Wiley, Hoboken
T2  - Plant Biology
T1  - Characterisation of antioxidants in photosynthetic and non-photosynthetic leaf tissues of variegated Pelargonium zonale plants
EP  - 680
IS  - 4
SP  - 669
VL  - 18
DO  - 10.1111/plb.12429
ER  - 

@article{
author = "Vidović, Marija and Morina, Filis and Milić-Komić, S. and Vuleta, A. and Zechmann, B. and Prokić, Lj and Veljović-Jovanović, Sonja",
year = "2016",
abstract = "Hydrogen peroxide is an important signalling molecule, involved in regulation of numerous metabolic processes in plants. The most important sources of H2O2 in photosynthetically active cells are chloroplasts and peroxisomes. Here we employed variegated Pelargonium zonale to characterise and compare enzymatic and non-enzymatic components of the antioxidative system in autotrophic and heterotrophic leaf tissues at (sub)cellular level under optimal growth conditions. The results revealed that both leaf tissues had specific strategies to regulate H2O2 levels. In photosynthetic cells, the redox regulatory system was based on ascorbate, and on the activities of thylakoid-bound ascorbate peroxidase (tAPX) and catalase. In this leaf tissue, ascorbate was predominantly localised in the nucleus, peroxisomes, plastids and mitochondria. On the other hand, non-photosynthetic cells contained higher glutathione content, mostly located in mitochondria. The enzymatic antioxidative system in non-photosynthetic cells relied on the ascorbate-glutathione cycle and both Mn and Cu/Zn superoxide dismutase. Interestingly, higher content of ascorbate and glutathione, and higher activities of APX in the cytosol of non-photosynthetic leaf cells compared to the photosynthetic ones, suggest the importance of this compartment in H2O2 regulation. Together, these results imply different regulation of processes linked with H2O2 signalling at subcellular level. Thus, we propose green-white variegated leaves as an excellent system for examination of redox signal transduction and redox communication between two cell types, autotrophic and heterotrophic, within the same organ.",
publisher = "Wiley, Hoboken",
journal = "Plant Biology",
title = "Characterisation of antioxidants in photosynthetic and non-photosynthetic leaf tissues of variegated Pelargonium zonale plants",
pages = "680-669",
number = "4",
volume = "18",
doi = "10.1111/plb.12429"
}

Vidović, M., Morina, F., Milić-Komić, S., Vuleta, A., Zechmann, B., Prokić, L.,& Veljović-Jovanović, S.. (2016). Characterisation of antioxidants in photosynthetic and non-photosynthetic leaf tissues of variegated Pelargonium zonale plants. in Plant Biology
Wiley, Hoboken., 18(4), 669-680.
https://doi.org/10.1111/plb.12429

Vidović M, Morina F, Milić-Komić S, Vuleta A, Zechmann B, Prokić L, Veljović-Jovanović S. Characterisation of antioxidants in photosynthetic and non-photosynthetic leaf tissues of variegated Pelargonium zonale plants. in Plant Biology. 2016;18(4):669-680.
doi:10.1111/plb.12429 .

Vidović, Marija, Morina, Filis, Milić-Komić, S., Vuleta, A., Zechmann, B., Prokić, Lj, Veljović-Jovanović, Sonja, "Characterisation of antioxidants in photosynthetic and non-photosynthetic leaf tissues of variegated Pelargonium zonale plants" in Plant Biology, 18, no. 4 (2016):669-680,
https://doi.org/10.1111/plb.12429 . .

TY  - JOUR
AU  - Veljović-Jovanović, Sonja
AU  - Vidović, Marija
AU  - Morina, Filis
AU  - Prokić, Lj.
AU  - Todorović, D. M.
PY  - 2016
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/906
AB  - Green-white variegated leaves of Pelargonium zonale were studied using the photoacoustic method. Our aim was to characterize photosynthetically active green tissue and nonphotosynthetically active white tissue by the photoacoustic amplitude signals. We observed lower stomatal conductance and higher leaf temperature in white tissue than in green tissue. Besides these thermal differences, significantly higher absorbance in green tissue was based on chlorophyll and carotenoids which were absent in white tissue. However, optical properties of epidermal layers of both tissues were equal. The photoacoustic amplitude of white tissue was over four times higher compared to green tissue, which was correlated with lower stomatal conductance. In addition, at frequencies  gt 700 Hz, the significant differences between the photoacoustic signals of green and white tissue were obtained. We identified the photoacoustic signal deriving from photosynthetic oxygen evolution in green tissue, using high intensity of red light modulated at 10 Hz. Moreover, the photoacoustic amplitude of green tissue increased progressively with time which corresponded to the period of induction of photosynthetic oxygen evolution. For the first time, very high frequencies (1 kHz to 5 kHz) were applied on leaf material.
PB  - Springer/Plenum Publishers, New York
T2  - International Journal of Thermophysics
T1  - Comparison of Photoacoustic Signals in Photosynthetic and Nonphotosynthetic Leaf Tissues of Variegated Pelargonium zonale
IS  - 9
VL  - 37
DO  - 10.1007/s10765-016-2092-7
ER  - 

@article{
author = "Veljović-Jovanović, Sonja and Vidović, Marija and Morina, Filis and Prokić, Lj. and Todorović, D. M.",
year = "2016",
abstract = "Green-white variegated leaves of Pelargonium zonale were studied using the photoacoustic method. Our aim was to characterize photosynthetically active green tissue and nonphotosynthetically active white tissue by the photoacoustic amplitude signals. We observed lower stomatal conductance and higher leaf temperature in white tissue than in green tissue. Besides these thermal differences, significantly higher absorbance in green tissue was based on chlorophyll and carotenoids which were absent in white tissue. However, optical properties of epidermal layers of both tissues were equal. The photoacoustic amplitude of white tissue was over four times higher compared to green tissue, which was correlated with lower stomatal conductance. In addition, at frequencies  gt 700 Hz, the significant differences between the photoacoustic signals of green and white tissue were obtained. We identified the photoacoustic signal deriving from photosynthetic oxygen evolution in green tissue, using high intensity of red light modulated at 10 Hz. Moreover, the photoacoustic amplitude of green tissue increased progressively with time which corresponded to the period of induction of photosynthetic oxygen evolution. For the first time, very high frequencies (1 kHz to 5 kHz) were applied on leaf material.",
publisher = "Springer/Plenum Publishers, New York",
journal = "International Journal of Thermophysics",
title = "Comparison of Photoacoustic Signals in Photosynthetic and Nonphotosynthetic Leaf Tissues of Variegated Pelargonium zonale",
number = "9",
volume = "37",
doi = "10.1007/s10765-016-2092-7"
}

Veljović-Jovanović, S., Vidović, M., Morina, F., Prokić, Lj.,& Todorović, D. M.. (2016). Comparison of Photoacoustic Signals in Photosynthetic and Nonphotosynthetic Leaf Tissues of Variegated Pelargonium zonale. in International Journal of Thermophysics
Springer/Plenum Publishers, New York., 37(9).
https://doi.org/10.1007/s10765-016-2092-7

Veljović-Jovanović S, Vidović M, Morina F, Prokić L, Todorović DM. Comparison of Photoacoustic Signals in Photosynthetic and Nonphotosynthetic Leaf Tissues of Variegated Pelargonium zonale. in International Journal of Thermophysics. 2016;37(9).
doi:10.1007/s10765-016-2092-7 .

Veljović-Jovanović, Sonja, Vidović, Marija, Morina, Filis, Prokić, Lj., Todorović, D. M., "Comparison of Photoacoustic Signals in Photosynthetic and Nonphotosynthetic Leaf Tissues of Variegated Pelargonium zonale" in International Journal of Thermophysics, 37, no. 9 (2016),
https://doi.org/10.1007/s10765-016-2092-7 . .

TY  - JOUR
AU  - Vidović, Marija
AU  - Morina, Filis
AU  - Prokić, Ljiljana
AU  - Milić-Komić, Sonja
AU  - Zivanović, Bojana
AU  - Veljović-Jovanović, Sonja
PY  - 2016
UR  - https://imagine.imgge.bg.ac.rs/handle/123456789/960
AB  - In this study we exposed variegated leaves of Pelargonium zonale to strong sunlight ( gt 1100 mu mol m(-2) s(-1) of photosynthetically active radiation) with and without paraquat (Pq), with the aim to elucidate the mechanisms of H2O2 regulation in green and white tissues with respect to the photosynthetically-dependent generation of reactive oxygen species (ROS). Sunlight induced marked accumulation of H2O2 in the apoplast of vascular and (peri)vascular tissues only in green sectors. This effect was enhanced by the addition of Pq. In the presence of diphenyl iodide, an NADPH oxidase inhibitor, H2O2 accumulation was abolished. Distinct light-induced responses were observed: in photosynthetic cells, sunlight rapidly provoked ascorbate (Asc) biosynthesis and an increase of glutathione reductase (GR) and catalase activities, while in non-photosynthetic cells, early up-regulation of soluble ascorbate peroxidase, dehydroascorbate reductase (DHAR) and GR activities was observed. Paraquat addition stimulated DHAR and GR activities in green sectors, while in white sectors activities of monodehydroascorbate reductase, DHAR and class III peroxidases, as well as Asc content rapidly increased. Differential antioxidative responses in the two tissues in the frame of their contrasting metabolisms, and the possible role of (peri)vascular H2O2 in signaling were discussed.
PB  - Elsevier Gmbh, Munich
T2  - Journal of Plant Physiology
T1  - Antioxidative response in variegated Pelargonium zonale leaves and generation of extracellular H2O2 in (peri)vascular tissue induced by sunlight and paraquat
EP  - 39
SP  - 25
VL  - 206
DO  - 10.1016/j.jplph.2016.07.017
ER  - 

@article{
author = "Vidović, Marija and Morina, Filis and Prokić, Ljiljana and Milić-Komić, Sonja and Zivanović, Bojana and Veljović-Jovanović, Sonja",
year = "2016",
abstract = "In this study we exposed variegated leaves of Pelargonium zonale to strong sunlight ( gt 1100 mu mol m(-2) s(-1) of photosynthetically active radiation) with and without paraquat (Pq), with the aim to elucidate the mechanisms of H2O2 regulation in green and white tissues with respect to the photosynthetically-dependent generation of reactive oxygen species (ROS). Sunlight induced marked accumulation of H2O2 in the apoplast of vascular and (peri)vascular tissues only in green sectors. This effect was enhanced by the addition of Pq. In the presence of diphenyl iodide, an NADPH oxidase inhibitor, H2O2 accumulation was abolished. Distinct light-induced responses were observed: in photosynthetic cells, sunlight rapidly provoked ascorbate (Asc) biosynthesis and an increase of glutathione reductase (GR) and catalase activities, while in non-photosynthetic cells, early up-regulation of soluble ascorbate peroxidase, dehydroascorbate reductase (DHAR) and GR activities was observed. Paraquat addition stimulated DHAR and GR activities in green sectors, while in white sectors activities of monodehydroascorbate reductase, DHAR and class III peroxidases, as well as Asc content rapidly increased. Differential antioxidative responses in the two tissues in the frame of their contrasting metabolisms, and the possible role of (peri)vascular H2O2 in signaling were discussed.",
publisher = "Elsevier Gmbh, Munich",
journal = "Journal of Plant Physiology",
title = "Antioxidative response in variegated Pelargonium zonale leaves and generation of extracellular H2O2 in (peri)vascular tissue induced by sunlight and paraquat",
pages = "39-25",
volume = "206",
doi = "10.1016/j.jplph.2016.07.017"
}

Vidović, M., Morina, F., Prokić, L., Milić-Komić, S., Zivanović, B.,& Veljović-Jovanović, S.. (2016). Antioxidative response in variegated Pelargonium zonale leaves and generation of extracellular H2O2 in (peri)vascular tissue induced by sunlight and paraquat. in Journal of Plant Physiology
Elsevier Gmbh, Munich., 206, 25-39.
https://doi.org/10.1016/j.jplph.2016.07.017

Vidović M, Morina F, Prokić L, Milić-Komić S, Zivanović B, Veljović-Jovanović S. Antioxidative response in variegated Pelargonium zonale leaves and generation of extracellular H2O2 in (peri)vascular tissue induced by sunlight and paraquat. in Journal of Plant Physiology. 2016;206:25-39.
doi:10.1016/j.jplph.2016.07.017 .

Vidović, Marija, Morina, Filis, Prokić, Ljiljana, Milić-Komić, Sonja, Zivanović, Bojana, Veljović-Jovanović, Sonja, "Antioxidative response in variegated Pelargonium zonale leaves and generation of extracellular H2O2 in (peri)vascular tissue induced by sunlight and paraquat" in Journal of Plant Physiology, 206 (2016):25-39,
https://doi.org/10.1016/j.jplph.2016.07.017 . .