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Pregled bibliografske jedinice broj: 789090

Photosynthetic response of young and mature fig leaves to high irradiation


Mlinarić, Selma; Cesar, Vera; Lepeduš, Hrvoje
Photosynthetic response of young and mature fig leaves to high irradiation // Zbornik sažetaka (Hrvatski biološki kongres s međunarodnim sudjelovanjem)  /  Klobučar, Göran ; Kopjar, Nevenka ; Gligora Udovič, Marija ;  Lukša, Žaklin ;  Jelić, Dušan  (ur.).
Zagreb: Hrvatsko biološko društvo, 2015. str. 99-100 (predavanje, domaća recenzija, sažetak, znanstveni)


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Naslov
Photosynthetic response of young and mature fig leaves to high irradiation

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

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

Izvornik
Zbornik sažetaka (Hrvatski biološki kongres s međunarodnim sudjelovanjem)  /  Klobučar, Göran ; Kopjar, Nevenka ; Gligora Udovič, Marija ;  Lukša, Žaklin ;  Jelić, Dušan  - Zagreb : Hrvatsko biološko društvo, 2015, 99-100

Skup
12. hrvatski biološki kongres s međunarodnim sudjelovanjem

Mjesto i datum
Sveti Martin na Muri, Hrvatska, 18.09.2015. - 23.09.2015

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
Ficus carica L.;  photosynthesis;  light stress;  chlorophyll a fluorescence
( Ficus carica L.;  photosynthesis;  light stress;  chlorophyll a fluorescence)

Sažetak
High irradiation often causes photoinhibition due to limited electron transport and reduced photosynthetic quantum conversion. We aimed to investigate influence of high irradiation on photosynthetic performance of young (YL) and mature (ML) fig leaves (Ficus carica L.) exposed to elevated temperature. Detached YL and ML were acclimated at room temperature in darkness for 12h and then exposed to 35±1°C combined with low (LI, ~50 µmolm-2s-1) or high irradiation (HI, ~800 µmolm-2s-1) for 4h. To evaluate primary photochemistry of photosystem II (PSII), modulated chlorophyll a fluorescence was measured. High maximum quantum yield of PSII photochemistry (Fv/Fm) indicated full functionality of both leaf types exposed to LI. Exposure of ML to HI induced significant reduction of Fv/Fm, followed with decreased electron transport rate (ETR) and non- photochemical quenching (NPQ). Increase in the quantum yield of non-regulated energy dissipation (Y(NO)), accompanied with decline in both, the effective quantum yield of photochemical energy conversion in PSII (Y(PSII)) and the quantum yield of pH-dependant energy dissipation (Y(NPQ)), suggested reduced capacity of photoprotective reactions. YL exposed to HI showed no significant difference in all measured parameters compared to LI, thus indicating stable photosynthetic performance. In conclusion, YL maintained efficient photoprotective mechanisms at HI, while increased susceptibility of ML to HI resulted with severe photoinhibition.

Izvorni jezik
Engleski

Znanstvena područja
Biologija



POVEZANOST RADA


Projekti:
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:
Sveučilište u Osijeku - Odjel za biologiju

Poveznice na cjeloviti tekst rada:

Pristup cjelovitom tekstu rada

Citiraj ovu publikaciju:

Mlinarić, Selma; Cesar, Vera; Lepeduš, Hrvoje
Photosynthetic response of young and mature fig leaves to high irradiation // Zbornik sažetaka (Hrvatski biološki kongres s međunarodnim sudjelovanjem)  /  Klobučar, Göran ; Kopjar, Nevenka ; Gligora Udovič, Marija ;  Lukša, Žaklin ;  Jelić, Dušan  (ur.).
Zagreb: Hrvatsko biološko društvo, 2015. str. 99-100 (predavanje, domaća recenzija, sažetak, znanstveni)
Mlinarić, S., Cesar, V. & Lepeduš, H. (2015) Photosynthetic response of young and mature fig leaves to high irradiation. U:  Klobučar, G., Kopjar, N., Gligora Udovič, M.,  Lukša, Ž. &  Jelić, D. (ur.)Zbornik sažetaka (Hrvatski biološki kongres s međunarodnim sudjelovanjem) .
@article{article, author = {Mlinari\'{c}, Selma and Cesar, Vera and Lepedu\v{s}, Hrvoje}, year = {2015}, pages = {99-100}, keywords = {Ficus carica L.,  photosynthesis,  light stress,  chlorophyll a fluorescence}, title = {Photosynthetic response of young and mature fig leaves to high irradiation}, keyword = {Ficus carica L.,  photosynthesis,  light stress,  chlorophyll a fluorescence}, publisher = {Hrvatsko biolo\v{s}ko dru\v{s}tvo}, publisherplace = {Sveti Martin na Muri, Hrvatska} }
@article{article, author = {Mlinari\'{c}, Selma and Cesar, Vera and Lepedu\v{s}, Hrvoje}, year = {2015}, pages = {99-100}, keywords = { Ficus carica L.,  photosynthesis,  light stress,  chlorophyll a fluorescence}, title = {Photosynthetic response of young and mature fig leaves to high irradiation}, keyword = { Ficus carica L.,  photosynthesis,  light stress,  chlorophyll a fluorescence}, publisher = {Hrvatsko biolo\v{s}ko dru\v{s}tvo}, publisherplace = {Sveti Martin na Muri, Hrvatska} }




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