RRC ID 6941
著者 Ueda H, Sugimoto Y.
タイトル Vestitol as a chemical barrier against intrusion of parasitic plant Striga hermonthica into Lotus japonicus roots.
ジャーナル Biosci Biotechnol Biochem
Abstract The root parasitic plant, Striga hermonthica, constrains the production of several agronomically important poaceous crops in the arid and semiarid tropical regions of Sub-Saharan Africa. The parasite is incompatible with the model legume, Lotus japonicus. Studies at the molecular and metabolic levels have revealed that expression of the genes involved in the biosynthesis of vestitol, a legume-specific phytoalexin, was highly up-regulated in L. japonicus roots challenged with S. hermonthica. High-performance liquid chromatography and mass spectroscopy confirmed the presence of vestitol in the exudate released from L. japonicus roots inoculated with S. hermonthica seedlings. Fluorescence, similar to that emitted by authentic vestitol, was displayed on the surface of L. japonicus roots to which successful attachment of S. hermonthica had been achieved. Vestitol exerted a limited inhibitory effect on S. hermonthica germination, but it significantly inhibited seedling growth. These results indicate that vestitol biosynthesis in L. japonicus was induced by S. hermonthica attachment and that vestitol contributed, at least in part, to the host's defence mechanism and acted as a chemical barrier against the intrusion of the parasite.
巻・号 74(8)
ページ 1662-7
公開日 2010-1-1
DOI 10.1271/bbb.100285
PII JST.JSTAGE/bbb/100285
PMID 20699571
MeSH Flavonoids / biosynthesis Flavonoids / metabolism* Flavonoids / pharmacology Gene Expression Regulation, Plant Germination / drug effects Lotus / chemistry* Lotus / genetics Lotus / metabolism Lotus / physiology* Plant Roots / chemistry* Plant Roots / genetics Plant Roots / metabolism Plant Roots / physiology Seedlings / drug effects Seedlings / growth & development Striga / growth & development Striga / physiology* Transcription, Genetic
IF 1.516
引用数 6
WOS 分野 FOOD SCIENCE & TECHNOLOGY CHEMISTRY, APPLIED BIOTECHNOLOGY & APPLIED MICROBIOLOGY BIOCHEMISTRY & MOLECULAR BIOLOGY
リソース情報
ミヤコグサ・ダイズ Miyakojima MG-20