查詢結果分析
相關文獻
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頁籤選單縮合
題 名 | Phytoplasmas are not Associated with Quick Decline of Macadamia Trees in Hawaii=夏威夷之澳洲胡桃樹快速萎凋病與植物菌質體沒有相關性 |
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作 者 | 李英敏; 柯文雄; | 書刊名 | Botanical Bulletin of Academia Sinica |
卷 期 | 39:4 1998.10[民87.10] |
頁 次 | 頁251-254 |
分類號 | 373.9 |
關鍵詞 | 植物菌質體; 澳洲胡桃樹; 快速萎凋病; Macadamia integrifolia; Nectria rugulosa; Phytoplasma; Quick decline; Xylaria arbuscula; |
語 文 | 英文(English) |
中文摘要 | 本文重新評估夏威夷之澳洲胡桃樹快速萎凋病與植物菌質體之相關性。自夏威夷 島兩個地區(Keauu 和 Kaiwiki)的兩種感病栽培品種333和344採集20個具病徵與不具病徵植 株的樣品供分析。應用超敏感巢式聚合�t連鎖反應兩對植物菌質體普遍性引子分析上述20個 樣品,結果均無法檢測到植物菌質體,此結果否定最近報導植物菌質體可能引起澳洲胡桃樹 萎凋病或快速萎凋病。相反地,在萎凋的澳洲胡桃樹總是可以發現其樹感染兩種病原真菌: Nectria rugulos和Xylaria arbuscula,此結果支持以前的假說,即澳洲胡桃樹的快速死亡 導因於病原真菌感染樹幹,並造成樹幹表皮環狀壞死所致。 |
英文摘要 | Association of phytoplasma with quick decline of macadamia trees in Hawaii was reevaluated. Twenty samples were collected from symptomatic and symptomless trees of the two susceptible cultivars cv.333, and cv.344 grown at Keaau and Kaiwiki on the island of Hawaii. Ultrasensitive nested-PCR assays using two universal primer pairs failed to detect phytoplasmas in all samples tested, contradicting the recent reports that phytoplasma may play a role in macadamia decline or quick decline. In contrast, infection of trunks by two fungal pathogens, Nectria rugulosa and Xylaria arbuscula were consistently associated with declining but not healthy macadamia trees, supporting the previous suggestion that sudden death of macadamia trees is primarily caused by girding of trunks resulting form infection by fungal pathogens. |
本系統中英文摘要資訊取自各篇刊載內容。