Photosynthetic electron transport and superoxide dismutase activity during natural senescence of maple leaves

Lepeduš, Hrvoje; Štolfa, Ivna; Radić, Sandra; Ćurković Perica, Mirna; Pevalek-Kozlina, Branka; Cesar, Vera

Pregled bibliografske jedinice broj: 304800

Photosynthetic electron transport and superoxide dismutase activity during natural senescence of maple leaves

Lepeduš, Hrvoje; Štolfa, Ivna; Radić, Sandra; Ćurković Perica, Mirna; Pevalek-Kozlina, Branka; Cesar, Vera

Photosynthetic electron transport and superoxide dismutase activity during natural senescence of maple leaves // Croatica chemica acta, 81 (2008), 1; 97-103 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 304800 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Photosynthetic electron transport and superoxide dismutase activity during natural senescence of maple leaves

Autori
Lepeduš, Hrvoje ; Štolfa, Ivna ; Radić, Sandra ; Ćurković Perica, Mirna ; Pevalek-Kozlina, Branka ; Cesar, Vera

Izvornik
Croatica chemica acta (0011-1643) 81 (2008), 1; 97-103

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
senescence ; photosystem II ; Rubisco LSU ; SOD ; lipid peroxidation ; protein oxidation

Sažetak
Natural senescence of maple (Acer pseudoplatanus L.) leaves was investigated. Three types of senescing leaves were used: green (G), yellow-green (YG) and yellow (Y) ones. Down regulation of photosynthetic performance was achieved due to significant degradation of total chlorophylls, decrease in maximum quantum yield of PSII (Fv/Fm) and relative electron transport rate (rel. ETR). Also, decrease in Rubisco LSU abundance as well as degradation of rbcL gene was shown in YG and Y leaves. Senescent leaves revealed significant increase in the capacity of PSII for oxygen evolution when expressed per chlorophyll unit. This was the most probable source of reactive oxygen specie (ROS) excess. The level of SOD activity increased 3.5-fold in Y leaves in respect to G and YG leaves. The increase in ROS level as well as in SOD activity during natural senescence of maple leaves was associated with increased level of lipid peroxidation and protein carbonyl content.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija)

POVEZANOST RADA

Projekti:
073-0731674-0841 - Stanična i tkivna diferencijacija tijekom razvoja biljnih organa
073-0731674-0552 - Fiziologija stresa i gospodarska svojstva različitih kultivara pšenice i ječma (Kovačević, Josip, MZOS ) ( CroRIS)
073-0731674-1673 - Utjecaj oksidativnog stresa na organizaciju i funkciju biljnih stanica i tkiva (Lepeduš, Hrvoje, MZOS ) ( CroRIS)
098-0982913-2838 - Regulatorni mehanizmi fotosinteze i diferencijacija plastida (Fulgosi, Hrvoje, MZOS ) ( CroRIS)
119-1191192-1215 - Biološka kontrola biljnih bolesti (Ćurković-Perica, Mirna, MZOS ) ( CroRIS)
119-1191196-1202 - Molekularni mehanizmi odgovora hrvatskih endemičnih i rijetkih biljaka na stres (Pevalek-Kozlina, Branka, MZOS ) ( CroRIS)