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Pregled bibliografske jedinice broj: 904631

Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress


Mlinarić, Selma; Cesar, Vera; Lepeduš, Hrvoje
Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress // Abstract book Graz
Graz: Universität Graz, 2017. str. 64-64 (poster, međunarodna recenzija, sažetak, znanstveni)


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Naslov
Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress

Autori
Mlinarić, Selma ; Cesar, Vera ; Lepeduš, Hrvoje

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Abstract book Graz / - Graz : Universität Graz, 2017, 64-64

Skup
Reactive Oxygen Species and Lipid Peroxidation in Human Health and Disease

Mjesto i datum
Graz, Austrija, 14.09.2017. - 15.09.2017

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
common fig ; chilling stress ; antioxidative enzymes ; OJIP

Sažetak
Common fig (Ficus carica L.) is widely cultivated Mediterranean species. Such warm- climate species are adapted to elevated temperatures and are susceptible to chilling stress (0 - 12°C)[1]. However, occasional short chilling periods are common during growing season in temperature areas what can affect functionality of the plant[2]. The aim of this work was to investigate influence of short-term low temperature (chilling) on PSII photochemistry and antioxidative response in young, still developing leaves of common fig. Leaves were detached from the tree, acclimated at room temperature in dark for 12h and then exposed to low temperature (10°C) and low irradiation (50 µmolm-2s-1) for 4h. Dark adapted leaves were considered as the control. Photosynthetic performance was analyzed by measuring in vivo chlorophyll fluorescence increase (JIP test). The production of H2O2, lipid peroxidation (TBARS) and activity of antioxidative enzymes: superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX), glutathione reductase (GR) and guaiacol peroxidase (GPOD) were measured as well. Maximum quantum yield of PSII (Fv/Fm) and overall photosynthetic performance (PItotal) decreased in leaves exposed to the chilling stress. Exposure to low temperature decreased absorption of light energy (ABS), trapping (TR0) of absorbed light energy and electron transport (ET0) further than primary acceptor (QA-) while energy dissipation (DI0) remained the same compared to the control. Moreover, reduction of the end electron acceptor (RE0) at photosystem I (PSI) also decreased after exposure to low temperature. The obstruction of photosynthetic electron transport flow is well documented reason for increased H2O2 production in leaves exposed to short-term chilling stress[1, 3]. In spite of increased H2O2 accumulation, the increase in TBARS level was not observed in the investigated leaves. Low temperatures inhibited activities of SOD and GPOD, while the CAT, APX and GR activities increased compared to the control. Our results suggests that antioxidative system was enough efficient to prevent the oxidative damage in biomembranes of fig leaves exposed to the chilling stress at 10°C.

Izvorni jezik
Engleski



POVEZANOST RADA


Projekti:
073-0731674-0841 - Stanična i tkivna diferencijacija tijekom razvoja biljnih organa
073-0731674-1673 - Utjecaj oksidativnog stresa na organizaciju i funkciju biljnih stanica i tkiva (Lepeduš, Hrvoje, MZOS ) ( CroRIS)


Citiraj ovu publikaciju:

Mlinarić, Selma; Cesar, Vera; Lepeduš, Hrvoje
Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress // Abstract book Graz
Graz: Universität Graz, 2017. str. 64-64 (poster, međunarodna recenzija, sažetak, znanstveni)
Mlinarić, S., Cesar, V. & Lepeduš, H. (2017) Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress. U: Abstract book Graz.
@article{article, author = {Mlinari\'{c}, Selma and Cesar, Vera and Lepedu\v{s}, Hrvoje}, year = {2017}, pages = {64-64}, keywords = {common fig, chilling stress, antioxidative enzymes, OJIP}, title = {Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress}, keyword = {common fig, chilling stress, antioxidative enzymes, OJIP}, publisher = {Universit\"{a}t Graz}, publisherplace = {Graz, Austrija} }
@article{article, author = {Mlinari\'{c}, Selma and Cesar, Vera and Lepedu\v{s}, Hrvoje}, year = {2017}, pages = {64-64}, keywords = {common fig, chilling stress, antioxidative enzymes, OJIP}, title = {Antioxidative response and photosynthetic performance of common fig (Ficus carica L.) leaves after short-term chilling stress}, keyword = {common fig, chilling stress, antioxidative enzymes, OJIP}, publisher = {Universit\"{a}t Graz}, publisherplace = {Graz, Austrija} }




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