Desmethyl type germinone, a specific agonist for the HTL/KAI2 receptor, induces the Arabidopsis seed germination in a gibberellin-independent manner

被引：3

作者：

Okabe, Shoma ^{[1
]}

Kitaoka, Kana ^{[2
]}

Suzuki, Taiki ^{[1
]}

Kuruma, Michio ^{[1
,3
]}

Hagihara, Shinya ^{[3
]}

Yamaguchi, Shinjiro ^{[4
]}

Fukui, Kosuke ^{[2
]}

Seto, Yoshiya ^{[1
]}

机构：

[1] Meiji Univ, Sch Agr, Lab Plant Chem Regulat, 1-1-1 Higashi Mita,Tama Ku, Kawasaki, Kanagawa, Japan

[2] Okayama Univ Sci, Dept Biochem, Okayama, Okayama 7000005, Japan

[3] RIKEN Ctr Sustainable Resource Sci, 2-1 Hirosawa, Wako, Saitama, Japan

[4] Kyoto Univ, Inst Chem Res, Uji, Kyoto 6110011, Japan

来源：

BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS | 2023年 / 649卷

关键词：

Strigolactone; HTL; KAI2; cc; I3-hydrolase; STRIGOLACTONE RECEPTORS; INHIBITION; KARRIKINS; PROTEIN; RESPONSES; DWARF14; MIMICS; SMOKE; RICE;

D O I：

10.1016/j.bbrc.2023.01.086

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

DWARF14 (D14) and HTL/KAI2 (KAI2) are paralogous receptors in the cc/I3-hydrolase superfamily. D14 is the receptor for a class of plant hormones, strigolactones (SLs), and KAI2 is the receptor for the smoke -derived seed germination inducer, Karrikin (KAR), in Arabidopsis. Germinone (Ger) was previously re-ported as a KAI2 agonist with germination-inducing activity for thermo-inhibited Arabidopsis seed. However, Ger was not specific to KAI2, and could also bind to D14. It was reported that SL analogs with a desmethyl-type D-ring structure are specifically recognized by KAI2. On the basis of this observation, we synthesized a desmethyl-type germinone (dMGer). We found that dMGer is highly specific to KAI2. Moreover, dMGer induced Arabidopsis seed germination more effectively than did Ger. In addition, dMGer induced the seed germination of Arabidopsis in a manner independently of GA, a well-known germination inducer in plants.(c) 2023 Elsevier Inc. All rights reserved.

引用

页码：110 / 117

页数：8