69.コムラサキシメジ(Lepista sordida)と芝の共生に関する化学的解明(口頭発表)

概要

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During the spring or summer a circle or arc of stimulated grass or of toadstools may appear in lawns and other grassy places. These are turf abnormalities called fairy-rings. "Fairy-ring diseases" are caused by about sixty kinds of mushroom-forming fungi. Among fairy-ring forming mushrooms, Lepista sordida was investigated as a source of plant-growth regulators. The culture broths of L. sordida were filtered. The filtrates were partitioned between hexane and water, then ethyl acetate and water. The aqueous layer was dried under reduced pressure, and the resulting residue was extracted with ethanol. Effect of the obtained fractions on turf growth was examined. The bioassay-guided separation of both ethyl acetate soluble part and ethanol soluble part gave compounds 1 and 2, respectively. Root growth of bentgrass seedlings exposed to 10μM of 1 was accelerated (320% of control). Compound 2 also promoted the root elongation (134% of control).
植物化学調節学会の論文
2007-10-05