A carlactonoic acid methyltransferase that contributes to the inhibition of shoot branching in Arabidopsis

SignificanceStrigolactones (SLs) are a group of apocarotenoid hormones, which regulates shoot branching and other diverse developmental processes in plants. The major bioactive form(s) of SLs as endogenous hormones has not yet been clarified. Here, we identify an methyltransferase, CLAMT, responsibl...

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Vydané v:Proceedings of the National Academy of Sciences - PNAS Ročník 119; číslo 14; s. e2111565119
Hlavní autori: Mashiguchi, Kiyoshi, Seto, Yoshiya, Onozuka, Yuta, Suzuki, Sarina, Takemoto, Kiyoko, Wang, Yanting, Dong, Lemeng, Asami, Kei, Noda, Ryota, Kisugi, Takaya, Kitaoka, Naoki, Akiyama, Kohki, Bouwmeester, Harro, Yamaguchi, Shinjiro
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: United States 05.04.2022
Predmet:
Arabidopsis - genetics
Arabidopsis - metabolism
Hormones - metabolism
Lactones - metabolism
Methyltransferases - genetics
Methyltransferases - metabolism
Plant Growth Regulators - metabolism
Plant Shoots - genetics
Plant Shoots - metabolism
terpenoid
strigolactone
biosynthesis
plant hormones
ISSN:1091-6490, 1091-6490
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Shrnutí:SignificanceStrigolactones (SLs) are a group of apocarotenoid hormones, which regulates shoot branching and other diverse developmental processes in plants. The major bioactive form(s) of SLs as endogenous hormones has not yet been clarified. Here, we identify an methyltransferase, CLAMT, responsible for the conversion of an inactive precursor to a biologically active SL that can interact with the SL receptor in vitro. Reverse genetic analysis showed that this enzyme plays an essential role in inhibiting shoot branching. This mutant also contributed to specifying the SL-related metabolites that could move from root to shoot in grafting experiments. Our work has identified a key enzyme necessary for the production of the bioactive form(s) of SLs.
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ISSN:1091-6490
1091-6490
DOI:10.1073/pnas.2111565119