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Fumonisin-Plant Interactions
https://kindai.repo.nii.ac.jp/records/9836
https://kindai.repo.nii.ac.jp/records/98369af552c6-ec78-48de-a789-896a15f54fef
| Item type | ☆紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2011-12-09 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Fumonisin-Plant Interactions | |||||||||||||
| 著者 |
Abbas, Hamed K.
× Abbas, Hamed K.
× Smeda, R.J.
× Duke, S.O.
× Shier, W.T.
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| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||||
| アクセス権 | ||||||||||||||
| アクセス権 | metadata only access | |||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||||||||||
| 著者 所属 | ||||||||||||||
| 値 | USDA-ARS, Southern Weed Science Laboratory | |||||||||||||
| 著者 所属 | ||||||||||||||
| 値 | USDA-ARS, Southern Weed Science Laboratory | |||||||||||||
| 著者 所属 | ||||||||||||||
| 値 | USDA-ARS, Southern Weed Science Laboratory | |||||||||||||
| 著者 所属 | ||||||||||||||
| 値 | College of Pharmacy, University of Minnesota | |||||||||||||
| 出版者 名前 | ||||||||||||||
| 出版者 | 近畿大学農学総合研究所 | |||||||||||||
| 書誌情報 |
近畿大学農学総合研究所報告 en : Bulletin of the Institute for Comprehensive Agricultural Sciences, Kinki University 号 5, p. 63-73, 発行日 1997-03-01 |
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| ISSN | ||||||||||||||
| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 09193022 | |||||||||||||
| 抄録 | ||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||
| 内容記述 | [Synopsis] The fumonisins are phytotoxins produced by fungi including Fusarium and Alternaria species infesting weeds, crops, soil and conifers. Fumonisin B_1 (FB_1) is also well-known as a mammalian toxin. FB_1 is a long-chain alkylamine with propanetricarboxylic moieties attached. It is structurally related to AAL-toxin, a phytotoxin first isolated from A. alternata f. sp. lycopersici, which causes stem canker disease on susceptible (asc / asc) tomatoes (Lycopersicon esculentum Mill.) . The susceptibility range of FB_1 and AAL-toxin has been investigated. Both toxins were initially thought to be host-specific to asc / asc tomatoes, but now are known to also be phytotoxic to weeds, specifically dicots. Symptoms include chlorosis, necrosis, stunting, and mortality. The fumonisins, especially FB_1, are produced by F. moniliforme, F. proliferatum and other Fusarium spp. of the Liseola section. Fumonisins were also isolated from A. alternata grown in liquid media and the mycelia and spores of A. alternata grown on solid rice media. FB_1 and AAL-toxin inhibit ceramide synthase, causing accumulation of free sphingolipid bases that are intermediates in the biosynthesis of sphingolipids, essential components of cell membrances. The accumulation of free sphingolipid bases is thought to result in the damage to cell components, cellular leakage, and chlorophyll loss. FB_1 and AAL-toxin were about 8 times more active than the recently-discovered ceramide synthase inhibitor australifungin. Duckweed was exposed to 1 μM FB_1, 1μM AAL-toxin or 5μM australifungin for 24 or 48 hrs and transferred to toxin-free media for 2 wks. Duckweed exposed to 24 hrs of FB_1 or AAL-toxin at 1μM recovered, whereas plants exposed to longer periods or higher concentrations did not. Duckweed subjected to 5μM of australifungin for up to 72 hrs recovered dramatically after removal of the toxin. To determine if FB_1 is a contact toxin or can be translocated throughout the plant, the movement of radiolabeled FB_1 was followed in jimsonweed, black nightshade and tomatoes. These results indicate that FB_1 applied to the surface of plants exhibits primarily contact activity. However, application of FB_1 to a wound site results in extensive damage to tissue above the point of application, indicating that FB_1 is xylem mobile. Fumonisins are potent phototoxins that act by a novel mechanism. Research is continuing to discover possible applications for fumonisins or their analogs in weed control. | |||||||||||||
