Inhibition of PSII in Atrazine-Tolerant Tobacco Cells by Barbatic Acid, a Lichen-Derived Depside

Toshikazu TAKAHAGI; Nobuhiro IKEZAWA; Tsuyoshi ENDO; Kentaro IFUKU; Yoshikazu YAMAMOTO; Yasuhiro KINOSHITA; Shunji TAKESHITA; Fumihiko SATO

doi:10.1271/bbb.70.266

Biochemistry & Molecular Biology Notes

Inhibition of PSII in Atrazine-Tolerant Tobacco Cells by Barbatic Acid, a Lichen-Derived Depside

Toshikazu TAKAHAGI, Nobuhiro IKEZAWA, Tsuyoshi ENDO, Kentaro IFUKU, Yoshikazu YAMAMOTO, Yasuhiro KINOSHITA, Shunji TAKESHITA, Fumihiko SATO

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Keywords: atrazine-resistance, lichen acid, inhibition of photosynthesis, photosystem II (PSII), psbA gene

JOURNAL FREE ACCESS

2006 Volume 70 Issue 1 Pages 266-268

DOI https://doi.org/10.1271/bbb.70.266

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Abstract

In atrazine-tolerant tobacco cells with Ser to Thr mutation at the 264th amino acid of PsbA polypeptide in photosystem II (PSII), electron trannsport around the secondary quinone acceptor (Q_B) site was inhibited to a greater extent by barbatic acid than in wild-type cells. Further characterization suggests similar mode of action of barbatic acid and phenyl-type herbicides.

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