9-cis-β-Apo-10′-carotenal is the precursor of strigolactones in planta

被引：14
作者：
Chen, Guan-Ting Erica [1 ,2 ]
Wang, Jian You [1 ]
Jamil, Muhammad [1 ]
Braguy, Justine [1 ]
Al-Babili, Salim [1 ,2 ]
机构：
[1] King Abdullah Univ Sci & Technol, Ctr Desert Agr, BioAct Lab, Thuwal, Saudi Arabia
[2] King Abdullah Univ Sci & Technol KAUST, Biol & Environm Sci & Engn Div, Plant Sci Program, Thuwal, Saudi Arabia
来源：
PLANTA | 2022年 / 256卷 / 05期
关键词：
Strigolactones; Striga; 9-cis-beta-apo-10 '-carotenal; C-13-isotope; Rice; LC-MS; CARLACTONE; INHIBITION; RICE;
D O I：
10.1007/s00425-022-03999-9
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Strigolactones (SLs) are plant hormone that regulates plant architecture and mediates rhizospheric communications. Previous in vitro studies using heterogously produced enzymes unraveled the conversion of all-trans-beta-carotene via the intermediate 9-cis-beta-apo-10'-carotenal into the SL precursor carlactone. However, a direct evidence for the formation of SLs from 9-cis-beta-apo-10'-carotenal is still missing. To provide this evidence, we supplied rice seedlings with C-13-labeled 9-cis-beta-apo-10'-carotenal and analyzed their SLs by LC-MS. Our results show that 9-cis-beta-apo-10'-carotenal is the SL precursor in planta and reveal, for the first time, the application of labeled long-chain apocarotenoids as a promising approach to investigate apocarotenoid metabolism and the genesis of carotenoid-derived growth regulators and signaling molecules.
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页数：7
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