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  1. Article: Biostimulants’ influence on tomato fruit characteristics at conventional and low-input NPK regime

    Klokić, Izudin / Koleška, Ivana / Hasanagić, Dino / Murtić, Senad / Bosančić, Borut / Todorović, Vida

    Acta agriculturæ Scandinavica. 2020 Apr. 2, v. 70, no. 3

    2020  

    Abstract: Plant biostimulants are commercial products based on different chemical substances used to enhance plant growth and productivity. The effects of biostimulants, Megafol and Viva, with different dominant compositions (amino acids and humic acids) on two ... ...

    Abstract Plant biostimulants are commercial products based on different chemical substances used to enhance plant growth and productivity. The effects of biostimulants, Megafol and Viva, with different dominant compositions (amino acids and humic acids) on two tomato cultivars (cv. Gravitet F1 and cv. Minaret F1) exposed to conventional and low-input macronutrient nutrition were investigated. Application of both biostimulants positively affected yield at conventional nutrition. In low-input nutrition variant, biostimulant application prevented yield loss only in cv. Minaret F1. Inter-cultivar differences were noticed in fruit characteristics (total phenol content, total flavonoids content and total antioxidative capacity) where application of biostimulants leads to opposite results in the examined cultivars. We considered the possibility of biostimulant usage as an effective nutritional addition for overcoming the problem of excessive fertilisation.
    Keywords amino acids ; antioxidant activity ; flavonoids ; fruit characteristics ; humic acids ; nutrition ; phenols ; plant growth ; tomatoes
    Language English
    Dates of publication 2020-0402
    Size p. 233-240.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 32458-9
    ISSN 1651-1913 ; 0906-4710
    ISSN (online) 1651-1913
    ISSN 0906-4710
    DOI 10.1080/09064710.2019.1711156
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 5695: Show issues

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  2. Article: Long term drought effects on tomato leaves: anatomical, gas exchange and antioxidant modifications

    Hasanagić, Dino / Koleška, Ivana / Kojić, Danijela / Vlaisavljević, Sanja / Janjić, Nina / Kukavica, Biljana

    Acta physiologiae plantarum. 2020 July, v. 42, no. 7

    2020  

    Abstract: Plant response to drought is a complex phenomenon consisting of numerous metabolic pathways primarily based on water loss prevention and redox homeostasis maintenance. This study analyses the correlation of stomatal and non-stomatal carbon assimilation- ... ...

    Abstract Plant response to drought is a complex phenomenon consisting of numerous metabolic pathways primarily based on water loss prevention and redox homeostasis maintenance. This study analyses the correlation of stomatal and non-stomatal carbon assimilation-limiting mechanisms with the strategies in antioxidant metabolism pathways and their connection with anatomical modifications in tomato leaves during long-term drought period lasting over 28 days. The results obtained in this research indicate that activation of stomatal closure was the first response to drought as stomatal pore was narrowed by 20% in day 15. The stomatal closing in early stress response was followed by decline in photosynthetic and transpiration rates even though the RUBISCO content has not been changed. Along with drought stress, both stomatal closure and RUBISCO content dramatically decreased leading to a decline in gas exchange parameters; thus, at the end of the experimental Queryperiod, the photosynthetic rate was reduced by 69% and transpiration rate by 80% in comparison with control plants. Superoxide dismutase and ascorbate peroxidase were induced in early stress response (as soon as after 15 days) with a constantly elevated activity during entire drought period. Terminal phase of drought induced the synthesis of new peroxidase isoform (MW ~ 49 kDa) which highly correlated with the phenolic acid contents. At the end of experimental period, the total phenol content of drought-treated plants was doubled as compared to control plants and this increase is correlated to elevated concentrations of hydroxybenzoic acid, ferulic acid, p-coumaric acid and caffeic acid. The progressive involvement of different antioxidant mechanisms over the drought period and their correlations with anatomical modifications and photosynthetic pigments protection was discussed in this paper.
    Keywords antioxidants ; ascorbate peroxidase ; caffeic acid ; carbon ; drought ; ferulic acid ; gas exchange ; homeostasis ; hydroxybenzoic acids ; loss prevention ; p-coumaric acid ; peroxidase ; phenols ; photosynthesis ; plant response ; ribulose-bisphosphate carboxylase ; stomatal movement ; stress response ; superoxide dismutase ; tomatoes ; transpiration ; water stress
    Language English
    Dates of publication 2020-07
    Size p. 121.
    Publishing place Springer Berlin Heidelberg
    Document type Article
    Note NAL-AP-2-clean
    ZDB-ID 783102-x
    ISSN 1861-1664 ; 0137-5881
    ISSN (online) 1861-1664
    ISSN 0137-5881
    DOI 10.1007/s11738-020-03114-z
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

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  3. Article: Response of cherry tomato seedlings to liquid fertiliser application under water stress

    Murtic, Senad / Oljaca, Rodoljub / Koleska, Ivana / Karic, Lutvija / Todorovic, Vida

    Zahradnictví. , v. 45, no. 1

    2018  

    Abstract: The aim of this study was to examine the impact of different liquid fertilisers on selected physiological parameters in order to evaluate the drought tolerance of cherry tomato seedlings. The following physiological parameters were investigated: total ... ...

    Abstract The aim of this study was to examine the impact of different liquid fertilisers on selected physiological parameters in order to evaluate the drought tolerance of cherry tomato seedlings. The following physiological parameters were investigated: total phenolic and flavonoid content, total antioxidant capacity and proline content of leaf extracts. Total phenolic and flavonoid content were determined using the Folin-Ciocalteu and aluminium chloride colorimetric methods, respectively. The ferric-reducing/antioxidant power (FRAP assay) was used to measure the total antioxidant capacity, while proline content was evaluated according to the method of Bates. The contents of proline, total phenolics and flavonoids were significantly higher in the leaves of cherry tomato seedlings exposed to water stress, which suggests that the higher synthesis of these substances by plants represents an important defence mechanism of drought tolerance. The results also indicate that the application of all the used fertilisers in accordance with the manufacturer’s instructions can significantly increase the content of phenol compounds and total antioxidant capacity of plants under normal growth conditions, thus improving survival under subsequent stress.
    Keywords aluminum chloride ; antioxidant activity ; cherry tomatoes ; colorimetry ; drought tolerance ; fertilizer application ; flavonoids ; leaves ; liquid fertilizers ; liquids ; phenol ; proline ; water stress
    Language English
    Dates of publication 2018-0221
    Size p. 22-28.
    Publishing place Czech Academy of Agricultural Sciences
    Document type Article
    ZDB-ID 2054054-1
    ISSN 0862-867X
    ISSN 0862-867X
    DOI 10.17221/17/2017-hortsci
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 3520: Show issues

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  4. Article: Biostimulant prevents yield loss and reduces oxidative damage in tomato plants grown on reduced NPK nutrition

    Koleška, Ivana / Hasanagić, Dino / Klokić, Izudin / Kukavica, Biljana / Murtić, Senad / Parađiković, Nada / Todorović, Vida

    Journal of plant interactions. 2017 Jan. 1, v. 12, no. 1

    2017  

    Abstract: Plant biostimulants are substances which have the capacity to modify physiological processes in plants in a way that provides potential benefits to growth, development or stress response. Effects of biostimulant application on two tomato hybrids ( ... ...

    Abstract Plant biostimulants are substances which have the capacity to modify physiological processes in plants in a way that provides potential benefits to growth, development or stress response. Effects of biostimulant application on two tomato hybrids (Ombeline F1 and Bostina F1) submitted to reduced nitrogen, phosphorus and potassium (NPK) nutrition aiming at prevention of oxidative stress generation as well as yield and fruit quality loss were investigated in this study. According to obtained results, foliar applied Viva® biostimulant decreased superoxide dismutase (SOD, EC 1.15.1.1) and peroxidase (POD, EC 1.11.1.7) activity in tomato leaves even when recommended NPK nutrition was reduced at 40%. Fruit quality parameters (total soluble solids, total acidity, ascorbic acid and lycopene content) and yield were also maintained in reduced macronutrient fertilization when biostimulant was added. Combination of biostimulant with reduced NPK fertilizer enabled stability of cell homeostasis in tomato plants and their better adaptation to stress conditions. The possibility of biostimulant being used as environmental friendly tool in the reduction of mineral fertilizers without negative consequences regarding yield and fruit quality was discussed.
    Keywords acidity ; ascorbic acid ; foliar application ; fruit quality ; homeostasis ; hybrids ; leaves ; lycopene ; mineral fertilizers ; nitrogen ; NPK fertilizers ; nutrition ; oxidative stress ; peroxidase ; phosphorus ; potassium ; stress response ; superoxide dismutase ; tomatoes ; total soluble solids
    Language English
    Dates of publication 2017-0101
    Size p. 209-218.
    Publishing place Taylor & Francis
    Document type Article
    ZDB-ID 2234941-8
    ISSN 1742-9153 ; 1742-9145
    ISSN (online) 1742-9153
    ISSN 1742-9145
    DOI 10.1080/17429145.2017.1319503
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 7652: Show issues

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  5. Article: Biostimulants' influence on tomato fruit characteristics at conventional and low-input NPK regime

    Klokic, Izudin / Koleska, Ivana / Hasanagic, Dino / Murtic, Senad / Bosancic, Borut / Todorovic, Vida

    Acta agriculturae Scandinavica : Section B, Soil and plant science

    2020  Volume 70, Issue 3, Page(s) 233

    Language English
    Document type Article
    ZDB-ID 32458-9
    ISSN 0906-4710
    Database Current Contents Nutrition, Environment, Agriculture

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    In stock of ZB MED Bonn / Germany

    Z 5695: Show issues

    Order via subito

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    Inter-library loan at ZB MED

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