Arabidopsis thaliana trx x and trx y mutants cannot counter acceptor side limitation of photosystem I. (IMAGE)

Okayama University

Arabidopsis thaliana trx x and trx y mutants cannot counter acceptor side limitation of photosystem I.

Caption

The photoprotective role of x- and y-type thioredoxins (Trxs) remains a mystery. Researchers in Japan have shown that Arabidopsis thaliana trx x and trx y mutants exhibit reduced photosynthetic efficiency in photosystem I [Y(I)] and acceptor-side limitation of photosystem I [Y(NA)] . This causes photoinhibition of photosystem I under fluctuating light conditions.

Credit

Yuki Okegawa from Okayama University, Japan

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