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題 名 | Morphological and Genetic Variations among Isolates of Bursaphelenchus spp. in Taiwan based on Ultrastructure and DNA Polymorphisms=臺灣松材線蟲之形態及核酸多型性遺傳變異 |
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作 者 | 李明仁; 王露儀; 蘇碧華; | 書刊名 | 嘉義技術學院學報 |
卷 期 | 65 1999.08[民88.08] |
頁 次 | 頁17-33 |
分類號 | 433.3 |
關鍵詞 | 松材線蟲; 擬松材線蟲; 核酸逢機擴增多型性; 形態; 遺傳變異; 演化關係; Bursaphelenchus xylophilus; B. mucronatus; RAPD; Morphology; Genetic variation; Phylogenetic relationship; |
語 文 | 英文(English) |
中文摘要 | 本研究以掃描式電子顯微鏡及核酸逢機擴增多型性(RAPD)技術,分析七個臺灣松 材線蟲的地理分離族群的形態及核酸多型性遺傳變異。七個松材線蟲族群樣本依形態特徵, 可分成松材線蟲 (Bursaphelenchus xylophilus) 及擬松材線蟲 (B. mucronatus) 兩類。 自線蟲樣本萃取基因組 DNA,分別用六十條含十個�B機排列的核甘酸引子來擴增基因組 DNA 的條帶。結果有二十八條引子的反產物,在各分離樣本間顯現明顯的電泳圖譜。再以相似度 係數及歸群分析來研究各線蟲樣本族群間的關係。核酸逢機擴增多型性分析結果顯示,松材 線蟲地理分離族群間具有遺傳變異。以相似度係數 0.85 為區分點可以將臺灣松材線蟲地理 分離族群分為兩群,此與利用松材線蟲形態特徵分類的結果相一致。 |
英文摘要 | Seven geographical isolates of pine wood nematodes (PWN) were studied with scanning electron microscopy (SEM) and tested by means of random amplified polymorphic DNAs (RAPDs). Seven PWN isolates could be separated into two groups, i.e., Bursaphelenchus xylophilus group and B. mucronatus group, based on morphological characteristics of PWNs. Genomic DNA isolated from PWNs were amplified in polymerase chain reactions with sixth random decamer primers. Twenty eight of the primers showed distinct RAPD bands., The relationship between seven isolates was studied using similarity coefficients and cluster analysis. RAPD analyses revealed that genetic variations existed among different geographical isolates of PWNs. Seven PWN isolates in Taiwan could be divided into two groups by similarity coefficient 0.85, which was consistent with classification based on morphological characteristics of PWN isolates. |
本系統中英文摘要資訊取自各篇刊載內容。