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http://hdl.handle.net/10297/5617
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| Title: | Synthesis and biological activity of amino acid conjugates of abscisic acid. |
| Authors: | Todoroki, Yasushi
Narita, Kenta
Muramatsu, Taku
Shimomura, Hajime
Ohnishi, Toshiyuki
Mizutani, Masaharu
Ueno, Kotomi
Hirai, Nobuhiro |
| Journal Title: | Bioorganic & Medicinal Chemistry |
| Publisher: | Elsevier |
| Journal Volume: | 19 |
| Journal Issue: | 5 |
| Start Page: | 1743 |
| End Page: | 1750 |
| Issue Date: | 2011-03-01 |
| Rights: | Copyright © 2011 Elsevier Ltd All rights reserved. |
| NDC: | 471 |
| Abstract: | We prepared 19 amino acid conjugates of the plant hormone abscisic acid (ABA) and investigated their biological activity, enzymatic hydrolysis by a recombinant Arabidopsis amidohydrolases GST-ILR1 and GST-IAR3, and metabolic fate in rice seedlings. Different sets of ABA-amino acids induced ABA-like responses in different plants. Some ABA-amino acids, including some that were active in bioassays, were hydrolyzed by recombinant Arabidopsis GST-IAR3, although GST-ILR1 did not show hydrolysis activity for any of the ABA-amino acids. ABA-L-Ala, which was active in all the bioassays, an Arabidopsis seed germination, spinach seed germination, and rice seedling elongation assays, except in a lettuce seed germination assay and was hydrolyzed by GST-IAR3, was hydrolyzed to free ABA in rice seedlings. These findings suggest that some plant amidohydrolases hydrolyze some ABA-amino acid conjugates. Because our study indicates the possibility that different plants have hydrolyzing activity toward different ABA-amino acids, an ABA-amino acid may function as a species-selective pro-hormone of ABA. |
| ISSN: | 09680896  |
| DOI: | 10.1016/j.bmc.2011.01.019 |
| PMID: | 21310619 |
| Journal NCID: | AA10938083  |
| Textversion: | author |
| Appears in Collections: | 06. 雑誌論文・記事(Journal Article, Article, Preprint)
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Todoroki, Yasushi
( 轟, 泰司)
( トドロキ, ヤスシ)
-- Narita, Kenta
-- Muramatsu, Taku
-- Shimomura, Hajime
-- Ohnishi, Toshiyuki
( 大西, 利幸)
( オオニシ, トシユキ)
-- Mizutani, Masaharu
-- Ueno, Kotomi
-- Hirai, Nobuhiro
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