Inhibition of Photosystem II of Spinach by the Respiration Inhibitors Piericidin A and Thenoyltrifluoroacetone | Zendy

Nobuhiro Ikezawa | Zendy; Kentaro Ifuku | Zendy; Tsuyoshi Endo | Zendy; Fumihiko Sato | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Inhibition of Photosystem II of Spinach by the Respiration Inhibitors Piericidin A and Thenoyltrifluoroacetone

Author(s) -

Nobuhiro Ikezawa,

Kentaro Ifuku,

Tsuyoshi Endo,

Fumihiko Sato

Publication year - 2002

Publication title -

bioscience biotechnology and biochemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.509

H-Index - 116

eISSN - 1347-6947

pISSN - 0916-8451

DOI - 10.1271/bbb.66.1925

Subject(s) - p680 , photosystem ii , chemistry , thenoyltrifluoroacetone , photochemistry , electron acceptor , spinach , quinone , acceptor , photosystem i , stereochemistry , photosynthesis , biochemistry , organic chemistry , extraction (chemistry) , solvent extraction , physics , condensed matter physics

The effects of several respiration inhibitors on photosystem II (PS II) were investigated. Among the agents tested, piericidin A and thenoyltrifluoroacetone (TTFA) inhibited the photosynthetic electron transport of spinach as measured from chlorophyll (Chl) fluorescence parameters (Fm'-F)/Fm' and Fv/Fm. Using specific donors and acceptors of electrons, we identified the sites of inhibition in and around the PS II complex; the site of inhibition by TTFA was between QA, primary quinone acceptor in PS II, and QB, secondary quinone acceptor, in the acceptor side of P680, the reaction center Chl of PS II, while inhibition by piericidin A of the acceptor side was downstream of Q(B), out of the PS II complex. Both agents also inhibited the donor side of P680, probably between tyrosine-161 of the reaction center protein of PS II and P680.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research