Biological Activity of Anti-bolting Compound, α-(7Z,10Z,13Z)-hexadeca-7,10,13-trienoic Acid Monoglyceride to Reduce the Endogenous Amount of Gibberellins.

Autor: Ogihara, Tsuyoshi, Shikama, Shunpei, Ishii, Akihisa, Hirota, Syotaro, Kashiwagi, Junichi, Fujino, Kaien, Mitsui, Yuki, Shimizu, Takafumi, Seo, Mitsunori, Kitaoka, Naoki, Koda, Yasunori, Matsuura, Hideyuki
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Zdroj: Journal of Plant Growth Regulation; Sep2024, Vol. 43 Issue 9, p3075-3087, 13p
Abstrakt: A monoacylglycerol, α-(7Z,10Z,13Z)-hexadeca-7,10,13-trienoic acid monoglyceride, extracted from leaves of Japanese radish (Raphanus sativus) has been reported as an anti-bolting compound (ABC); however, the mechanism how ABC inhibits the plant bolting has been remained to be elucidated. In this paper, it was found that exogenous applications of ABC led Arabidopsis thaliana seedlings decrease transcriptional levels of AtKO and increase those of AtGA2ox to reduce endogenous levels of gibberellins (GAs) to retard A. thaliana growth, whose physiological phenomena were counteracted by exogenous applications of ent-kaurenoic acid and GA3, respectively. Furthermore, α-oleanolic acid monoglyceride having both activities of supressing KO and enhancing GA2ox inductions retarded A. thaliana growth post germination, although α-palmitic acid monoglyceride having only the effect of supressing KO induction was not enough to suppress the growth. These experimental data supported the idea that dual function was essential for ABC to show biological activity. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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