Studies on the structure and elicitor activity of fungal glucans.
Studies on the structure and elicitor activity of fungal glucans.
复制标题
真菌葡聚糖的结构和诱导子活性的研究。
作者：
A. Anderson
Bot. 58: 2343-2348. Neutral sugar compositionsof materials released from isolated mycelial walls of race 1 and race 2 of Firsariutn oxysporutn f. sp. lycopersici and Fuscrriutn oxysporutn f. sp. cirbense were similar (5% ribose, 52% mannose, 28% galactose, 15% glucose). High molecular weight glucans were isolated by ion-exchange chromatography from the cell wall extracts of each of the Fitsariutn isolates. The linear chain linkage structure of the Firscrrirrttr glucans was predominantly 1-3 and 1-6. That of the Colletotrichirtt~ lit~dett~~rthicrt~lr,,~ glucans was 1-3 and 1-4. These Fusariirttl glucans were nearly as effective as glucans from Colletotricl~utn species at eliciting browning and phytoalexin production in green bean cotyledons. Tomato fruit and stem tissue showed browning and phytoalexin production when exposed to F. oxysporutn f. sp. ctrbetlse spores. These symptoms did not develop upon treatment of tomato tissues with the Frrsariurn or Colletotricllrrtn glucans that had elicitor activity in green bean. ANDERSON, A.
