Napredna pretraga

Pregled bibliografske jedinice broj: 396007

Photochemistry of PSII in CYP38 Arabidopsis thaliana deletion mutant


Lepeduš, Hrvoje; Tomašić, Ana; Jurić, Snježana; Katanić, Zorana; Cesar, Vera; Fulgosi, Hrvoje
Photochemistry of PSII in CYP38 Arabidopsis thaliana deletion mutant // Food Technology and Biotechnology, 47 (2009), 3; 275-280 (međunarodna recenzija, članak, znanstveni)


Naslov
Photochemistry of PSII in CYP38 Arabidopsis thaliana deletion mutant

Autori
Lepeduš, Hrvoje ; Tomašić, Ana ; Jurić, Snježana ; Katanić, Zorana ; Cesar, Vera ; Fulgosi, Hrvoje

Izvornik
Food Technology and Biotechnology (1330-9862) 47 (2009), 3; 275-280

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

Ključne riječi
Chlorophyll fluorescence; photosystem II; photosynthesis regulation; OJIP test; TLP40

Sažetak
Chloroplast protein CYP38 is a cyclophilin-like peptidyl-prolyl cis-trans isomerase involved in photosystem II (PSII) assembly. It also serves as a regulator of thylakoid protein phosphatase. In this work the efficiency of PSII in CYP38 deficient Arabidopsis thaliana plants has been analyzed by measuring in vivo chlorophyll (Chl) a fluorescence transient (OJIP test). Significant differences in overall photosynthetic performance (PIABS), absorption (ABS/RC), trapping (TRo/RC), electron transport (ETo/RC), and dissipation (DIo/RC) were observed between A. thaliana M13 and wild type (WT) plants. Increased Chl a and Chl b levels, as well as decreased Chl a/Chl b ratio were measured in M13 plants, indicating the adjustment of PSII antenna for increasing light absorption capability. Based on the obtained results, it can be concluded that deficiency in CYP38 protein leads to impaired function of PSII due to the conversion of a certain fraction of active reaction centres to dissipative ones. This leads to a decrease in overall photosynthetic performance (PIABS) in M13 plants. Such effect was due to lowering of TRo/DIo parameter, which was influenced mostly by significant increases in energy dissipation (DIo/RC) and in trapping of electrons (TRo/RC) per active reaction centre.

Izvorni jezik
Engleski

Znanstvena područja
Biologija, Poljoprivreda (agronomija), Biotehnologija



POVEZANOST RADA


Projekt / tema
073-0731674-0841 - Stanična i tkivna diferencijacija tijekom razvoja biljnih organa (Vera Cesar, )
073-0731674-1673 - Utjecaj oksidativnog stresa na organizaciju i funkciju biljnih stanica i tkiva (Hrvoje Lepeduš, )
098-0982913-2838 - Regulatorni mehanizmi fotosinteze i diferencijacija plastida (Hrvoje Fulgosi, )

Ustanove
Poljoprivredni institut Osijek,
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus