Lepista Sordida Research Articles

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)

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)

クリーピングベントグラス、コウシュンシバ、および寒地型芝草をコウシュンシバに混植した芝生におけるチビホコリタケ、ヒダホコリタケ、コムラサキシメジによるフェアリーリング病部位での発生子実体と病徴との位置関係

クリーピングベントグラス、コウシュンシバ、および寒地型芝草をコウシュンシバに混植した芝生におけるチビホコリタケ、ヒダホコリタケ、コムラサキシメジによるフェアリーリング病部位での発生子実体と病徴との位置関係

칠갑산 야생버섯 추출물로부터 혈전용해효소의 활성 검색

Extracts of 67 wild mushrooms were tested for their fibrinolytic activities. The extract of Marasmius pulcherripes showed 112% higher increased activity as compared with a positive control, plasmin (0.75 U/ml). Helvella elastica and Psathyrella sp. showed 60% and 49% of activities to that of plasmin, respectively. Three mushrooms such as Lepista sordida, Fomitella fraxinea, and Leucoagaricus rubrotinctus showed 40% of plasmin activity. The other 60 mushroom extracts did not show any fibrinolytic activity.

Laccase production by Lepista sordida

A Lepista sordida laccase has been characterized. Laccase and manganese peroxidase were detected in liquid medium with ammonium phosphate, yeast extract and ammonium molybdidate as nitrogen sources after 3 days of cultivation. Laccase optimal temperature and pH were 45oC and 3.5, respectively.

Movement of the fairy ring by Lepista sordida in Zoysia matrella turf

Movement of the fairy ring by <I>Lepista sordida</I> in <I>Zoysia matrella</I> turf

Antifungal constituents in the bark ofMagnolia obovata Thunb

The acetone extract of the bark ofMagnolia obovata Thunb. had potent antifungal activity against plant pathogenic and wood destroying fungi. The active principles were isolated and identified to be eudesmols (I), magnolol (II) and honokiol (III). Eudesmols, which are main components of the volatile bark oil, showed strong antifungal activity against all of the fungi tested, especially basidiomycetes. It completely inhibited the growths ofCoriolus versicolor, Lepista sordida, Pycnoporus coccineus, Rhizoctonia solani, Serpula lacrymans andTyphula ishikariensis at a concentration of 500 μg mL−1. Two biphenyl type neolignans, magnolol and honokiol, also exhibited potent antifungal activity against these fungi except againstC. versicolor andL. sordida. They completely depressed the growths ofS. lacrymans andT. ishikariensis at the same concentration.

Two new bioactive diterpenes from Lepista sordida

In a screening for inducers of the differentiation of human leukaemic cells, two new active diterpenoids were isolated from fermentations of the basidiomycete Lepista sordida. The structural elucidation by spectroscopic methods and the biological activities of both metabolites are described.

Lipid Components of Seven Species of Basidiomycotina and Three Species of Ascomycotina

The lipids of seven species of Basidiomycotina (Lepista sordida, Amanita pantherina, Russula emetica, Russula nigricans, Lactarius vellereus, Clavulina cristata and Polyporus squmosus) and three species of Ascomycotina (Morchella esculenta, Morchella elata and Pezia vesiculosa) were studied for determination of total lipid, neutral lipid, glycolipid and phospholipid content and fatty acid composition. The major fatty acid components of all samples were 16 : 0, 18 : 1 and 18 : 2, but 18 : 0 was found in L. vellereus in considerable amounts. Two unusual fatty acids cis-9, trans-11, trans-13, cis-15-octadecatetraenoic acid and cis-9, cis-14-, octadecadien-, 12-ynoic acid were also detected as fatty acid components of C. cristata. Their structures were assigned based on chromatographic and UV and GC-MS spectrometric data as well as a comparison with the authentic samples.

Surface Replicas of the Spores of Fleshy Fungi

SUMMARYSingle- or two-stage surface replicas were made of the following: Clitopilus prunulus, Leucopaxillus albissimus var. lentus, Laccaria laccata, Laccaria trullisata, Clitocybe asterospora, Clitocybe inversa, Clitocybe highlandensis, Lepista caespitosa, Lepista sordida, Lepista irina var., Lepista nuda, Lepista sp., Russula dissimulans, Lactarius sp., Cantharellus floccosus.Various means of preparation and comments upon their utility are reported along with the electron micrographs. Some of the results contribute information which is of direct application to taxonomy while others only illustrate the variation of spore ornamentation and the resolution of surface structure.