41. シロイヌナズナ、ニンジンの根が生産する根寄生植物ヤセウツボの種子発芽刺激物質に関する研究

概要

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The parasitic weeds Orobanche and Striga invade host plants in order to rob them of water, minerals, and nutrients, and are serious threat to agriculture in large parts of the world. Seeds of these parasites require specific host factors for efficient germination, thereby insuring the availability of an appropriate host root prior to germination. In this study, germination stimulants for root parasitic plants Orobanch minor produced by Arobidopsis thaliana and carrot were examined. The root exudates were collected periodically from the plants grown hydroponically and extracted with ethyl acetate. Characterization of germination stimulants was conducted by comparing retention times of germination stimulants on ODS-HPLC with those of synthetic standards, and by using LC/MS/MS. The results indicate that Arabidopsis produces at least two different stimulants including orobanchol and that carrot produces several novel stimulants, probably strigolactones.
植物化学調節学会の論文
2005-10-13