Symptom and sign of infected plants--chemistry and biological activity-

受感染植物的症状和体征——化学和生物活性——

• 批准号: 63470115
• 负责人: YOSHIHARA Teruhiko
• 金额: $ 4.54万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1988
• 资助国家: 日本
• 起止时间: 1988 至 1989
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-63470115/
• 关键词: Chokol; Induced resistance; Epoxy fatty acid; Fungitoxic compound; Choke disease; Furanosylation; チモシ-ガマの穂病; Epichloe typhina; チョ-ク; フラノシル化; スフィンゴイド; チモシーがまの穂病; Epichloe Iyphina; チョーク; 病害抵抗性機作; チョコール; チョコール酸; 抗菌物質

l.New fungitoxic sesquiterpenoids (nine chokols (D-L), two chokolic acids and chokolal) were isolated from stromata of Epichloe typhina on Phleum pratense and their structures were determined.Because these compounds have fungitoxic activities and exist specifically in the infected timothy, they have possibility to associate with the induced resistance.2.A novel C-11 epoxy fatty acid and a fatty acid lactone were isolated. These compounds have fungitoxic activity and were thought to be associated with the induced resistance.3.As phenolic compounds, non-fungitoxic di-p-coumaroyl-glycerol and its dimer (chokorin) were isolated. A sterol with an aromatized B ring was isolated.4.Three phytols have an aerial hyphae-inducing activity.A cyclooctasulfur having a fruit body-inducing activity was isolated.5.Metabolites of phenolic compounds by Epichloe typhina were investigated. -ribofuanoside from pinoresinol and 7-0- ribofuranoside from diosmetin were metabolized products.The novel furanosylations were revealed.

1.从草原尺蠖Epichotypyphina的寄主中分离得到9个具有真菌毒性的倍半萜类化合物（9个chokols（D-L）、2个chokolic acids和chokolal），并确定了它们的结构，由于这些化合物具有真菌毒性，且特异存在于受感染的梯牧草中，因此它们可能与诱导的抗性有关。这些化合物具有真菌毒活性，被认为与诱导抗性有关。3.作为酚类化合物，分离得到非真菌毒的二对香豆酰甘油及其二聚体（chokorin）。4.三种植物醇具有气生菌丝诱导活性，其中一种环八硫具有子实体诱导活性。结果表明，在代谢过程中，松醇的7--呋喃核糖苷和薯蓣皂苷的7-0-呋喃核糖苷发生了新的呋喃糖基化反应。

项目成果

H. Koshino: "Novel C-11 Epoxy Fatty Acid from Stromata of Epichloe typhina on Phleum pratense" Agric. Biol. Chem. 53.2527-2528 (1989).

H. Koshino：“来自 Phleum pratense 上的 Epichloetyphina 子座的新型 C-11 环氧脂肪酸”Agric。

T. Yoshihara: "Biological Activity of the Symbiosis between Acremoneum Endophyte and Grass." Nihon Nogeikagaku Kaishi 64, (1990).

T. Yoshihara：“枝顶孢内生菌与草之间共生的生物活性。”

Koshino,Hiroyuki: Phytochemistry. 27. 1333-1338 (1988)

小筱宏之：植物化学。

H.Koshino: "New Fungitoxic Sesquiterpenoids,Chokols A-G,from stromata of Epichloe typhina and the Absolute Configuration of Chokol E." Agric.Biol.Chem. 53. 789-796 (1989)

H.Koshino：“新的真菌毒性倍半萜类化合物，Chokols A-G，来自火蜥蜴的子座和 Chokol E 的绝对构型。”

S. Sakamura: "Biologically Active Natural Products-Potential Use in Agriculture" American Chemical Society 57-64 (1988).

S. Sakamura：“生物活性天然产品 - 农业中的潜在用途”美国化学会 57-64 (1988)。