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題 名 | The Possible Origin and Relation of Phytophthora Katsurae and P. Heveae, Discovered in a Protected Natural Forest in Taiwan=在臺灣的自然保護林內所發現的Phytophthora Katsurae同P. Heveae之可能來源及關係 |
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作 者 | 柯文雄; 王馨媛; 安寶貞; | 書刊名 | Botanical Studies |
卷 期 | 47:3 民95.07 |
頁 次 | 頁273-277 |
分類號 | 379.1 |
關鍵詞 | 卵胞子囊突起; 原生種; Phytophthora heveae; Phytophthora katsurae; Oogonial protrusion; Indigenous; |
語 文 | 英文(English) |
中文摘要 | 從1976年到2000年由全臺灣各縣採集的531個土壤中,只從三個縣分離到16株Phytophthora katsurae,也只從四個縣分離到9株P. heveae。在蓮花池的自然保護林內,我們同時分離到P. katsurae和P. heveae。此保護林位於山頂上,附近視野內沒有比其更高的地方,由此可見此二種菌可能是台灣的原生種。P. katsurae是以卵胞子囊壁突起,與很相近的P. heveae區別。臺灣的P. katsurae,每個卵胞子囊的突起數差異很大,由2個到23個,顯示此分類特性之不穩定。夏威夷分離到的P. katsurae菌株,所產生的卵胞子囊帶有很少的突起。而且其中兩株所產生的卵胞子囊,大部份都沒有突起,看起來與P. heveae的卵胞子囊沒有差別。這些的試驗結果顯示,P. heveae可能由P. katsurae以消失卵胞子囊上的突起而發展出來。P. heveae同P. katsurae的ITS的相似度,比他們同其他Phytophthora的相似度要高很多。這也支持他們之間,可能一個是由另一個於新近發展而來的觀點。 |
英文摘要 | When a total of 531 soil samples collected from 1976 to 2000 from various locations distributed in every county on the island of Taiwan was assayed, sixteen isolates of Phytophthora katsurae and nine isolates of P. heveae were recovered from three and four counties, respectively. Phytophthora katsurae and P. heveae were isolated from a protected natural forest located atop a hill at Lenhuachih without higher land within the range of vision, suggesting that both species are indigenous to Taiwan. Phytophthora katsurae is distinguished from the similar P. heveae by its verrucose oogonial wall. The number of protrusions produced by the Taiwanese isolates of P. katsurae varied greatly ranging from 2 to 23 per oogonium, indicating the unsteadiness of this taxonomical characteristic. Oogonia produced by isolates of P. katsurae obtained from Hawaii contained very few protrusions. Moreover, most oogonia produced by two of these isolates did not have any protrusions and were indistinguishable from those produced by P. heveae. Results suggest the development of P. heveae directly from P. katsurae by loss of oogonial protrusions. The high level of ITS sequence similarity between P. heveae and P. katsurae in comparison with their relationships to other Phytophthora species tested also support the possibility of the recent development of one species from the other species. |
本系統中英文摘要資訊取自各篇刊載內容。