Physiology and biochemistry of leaves bleaching in prematurely aging maple (Acer saccharinum L.) trees: II. Functional and molecular adjustment of PSII

Lepeduš, Hrvoje; Begović, Lidija; Mlinarić, Selma; Šimić, Domagoj; Štolfa, Ivna; Parađiković, Nada; Užarević, Zvonimir; Jurković, Vlatka; Cesar, Vera

doi:10.2478/v10184-010-0010-9

Pregled bibliografske jedinice broj: 460666

Physiology and biochemistry of leaves bleaching in prematurely aging maple (Acer saccharinum L.) trees: II. Functional and molecular adjustment of PSII

Lepeduš, Hrvoje; Begović, Lidija; Mlinarić, Selma; Šimić, Domagoj; Štolfa, Ivna; Parađiković, Nada; Užarević, Zvonimir; Jurković, Vlatka; Cesar, Vera

Physiology and biochemistry of leaves bleaching in prematurely aging maple (Acer saccharinum L.) trees: II. Functional and molecular adjustment of PSII // Acta botanica Croatica, 70 (2011), 2; 137-150 doi:10.2478/v10184-010-0010-9 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 460666 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
Physiology and biochemistry of leaves bleaching in prematurely aging maple (Acer saccharinum L.) trees: II. Functional and molecular adjustment of PSII

Autori
Lepeduš, Hrvoje ; Begović, Lidija ; Mlinarić, Selma ; Šimić, Domagoj ; Štolfa, Ivna ; Parađiković, Nada ; Užarević, Zvonimir ; Jurković, Vlatka ; Cesar, Vera

Izvornik
Acta botanica Croatica (0365-0588) 70 (2011), 2; 137-150

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

Ključne riječi
silver maple ; photosynthesis ; premature aging ; chlorophyll fluorescence

Sažetak
In the present study we aimed to investigate physiological and molecular mechanisms of photosynthetic performance decline in prematurely aged bleached leaves of silver maple (Acer saccharinum L.) trees. We used in vivo chlorophyll a fluorescence measurement to analyze changes in PSII photochemistry, relative abundance of photosynthetic proteins (D1, LHCII, Cytf and Rubisco LSU), relations between chlorophylls and their precursor protochlorophyllide as well as leaves elemental composition. Decrease in Al, Cr, Cu, Fe, K, Zn and increase in S concentrations were found in bleached leaves in comparison to healthy green ones. Visually, bleached leaves were expressing symptoms characteristically for Fe deficiency. Further, they had considerably decreased chlorophylls and protochlorophyllide contents, overall photosynthetic activity and relative abundance of major photosynthetic proteins. All obtained results indicate that modifications in molecular organization of photosynthetic electron-transport chain components in bleached leaves led to functional adaptation of the PSII achieved by modifications of a certain fraction of reaction centres (RCs) from active to dissipative ones. This provided efficient protective strategy in bleached leaves against high-light induced oxidative damage during summer. Key words: Silver maple, photosynthesis, premature aging, chlorophyll fluorescence

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija), Biotehnologija

POVEZANOST RADA

Projekti:
073-0731674-0841 - Stanična i tkivna diferencijacija tijekom razvoja biljnih organa
073-0730463-0203 - Genetska analiza koncentracije minerala u zrnu kukuruza (Šimić, Domagoj, MZOS ) ( CroRIS)
073-0731674-0552 - Fiziologija stresa i gospodarska svojstva različitih kultivara pšenice i ječma (Kovačević, Josip, MZOS ) ( CroRIS)
098-0982913-2838 - Regulatorni mehanizmi fotosinteze i diferencijacija plastida (Fulgosi, Hrvoje, MZOS ) ( CroRIS)
073-0731674-1673 - Utjecaj oksidativnog stresa na organizaciju i funkciju biljnih stanica i tkiva (Lepeduš, Hrvoje, MZOS ) ( CroRIS)

Ustanove:
Poljoprivredni institut Osijek,
Institut "Ruđer Bošković", Zagreb,
Fakultet za odgojne i obrazovne znanosti, Osijek,
Sveučilište u Osijeku - Odjel za biologiju

Profili:

Lidija Begović (autor)