Pregled bibliografske jedinice broj: 1122615
Antioxidative response and photosynthetic regulatory mechanisms in common fig leaves after short-term chilling stress
Antioxidative response and photosynthetic regulatory mechanisms in common fig leaves after short-term chilling stress // Annals of applied biology, 178 (2021), 2; 315-327 doi:10.1111/aab.12671 (međunarodna recenzija, članak, znanstveni)
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Naslov
Antioxidative response and photosynthetic
regulatory mechanisms in common fig leaves
after short-term chilling stress
Autori
Mlinarić, Selma ; Cesar, Vera ; Lepeduš, Hrvoje
Izvornik
Annals of applied biology (0003-4746) 178
(2021), 2;
315-327
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
antioxidative enzymes ; cold stress ; Ficus carica L. ; photoinhibition ; photosynthesis ; TBARS
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). However, occasional short chilling periods are common during growing season in temperate areas that can affect functionality of the plant. The aim of this work was to investigate influence of short-term chilling stress on antioxidative response and PSII photochemistry in developing leaves of two common fig varieties: Zamorčica and Green matalon. Leaves were detached from the trees, acclimated at room temperature in dark for 16 hr and then exposed to low temperature (10°C) at low irradiation (50 μmol m−2 s−1) for 4 hr. Dark adapted leaves were considered as the control. The damage to the membranes was determined as lipid peroxidation (thiobarbituric acid reactive substances) while the antioxidative response was evaluated by determining activities of the selected antioxidative enzymes. Photosynthetic performance was analysed by measuring in vivo chlorophyll a fluorescence (ChlF) increase. Relative accumulation of the main photosynthetic proteins (D1 and Rubisco LSU) was determined, as well. Due to efficient antioxidative activity, neither of investigated variety showed damage of the membrane lipids. Both varieties revealed functional antennae and its good connectivity to their reaction centres shown as negative L and K bands as well as stable D1 protein accumulation suggesting functional electron transport through photosystem II (PSII) and efficient primary photochemistry. Blocked electron flow further than QA resulted in limitation of the Photosystem I (PSI) functionality in both varieties. Due to differential relative accumulation of D1 and Rubisco LSU proteins upon the chilling stress, Zamorčica revealed greater decrease of the main photosynthetic parameters derived from in vivo ChlF induction (PItotal, PIABS and φP0) in comparison to Green matalon. In addition, increased specific energy fluxes through PSII in Zamorčica suggested its higher susceptibility to photoinhibition caused by chilling stress in comparison to Green matalon.
Izvorni jezik
Engleski
Znanstvena područja
Biologija, Poljoprivreda (agronomija)
POVEZANOST RADA
Projekti:
MZOS-073-0731674-1673 - Utjecaj oksidativnog stresa na organizaciju i funkciju biljnih stanica i tkiva (Lepeduš, Hrvoje, MZOS ) ( CroRIS)
073-0731674-0841 - Stanična i tkivna diferencijacija tijekom razvoja biljnih organa
Ustanove:
Filozofski fakultet, Osijek,
Sveučilište u Osijeku - Odjel za biologiju,
Fakultet za dentalnu medicinu i zdravstvo, Osijek
Citiraj ovu publikaciju:
Uključenost u ostale bibliografske baze podataka::
- MEDLINE