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題 名 | 芒果炭疽病菌胞子發芽之營養需求及胞子外泌物之特性=Nutrient Requirement of Conidial Germination and Characteristics of Spore Matrix for Mango Anthracnose Fungus |
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作 者 | 翁豐嶽; 莊再揚; | 書刊名 | 植物病理學會刊 |
卷 期 | 6:1 1997.03[民86.03] |
頁 次 | 頁17-24 |
分類號 | 435.325 |
關鍵詞 | 芒果炭疽病; 炭疽病菌; 胞子外泌物; Mango anthracnose; Colletotrichum gloeosporioides; Spore matrix; |
語 文 | 中文(Chinese) |
中文摘要 | 翁豐嶽、莊再揚. 1997. 芒果炭疽病菌胞子發芽之營養需求及胞子外泌物之特性 . 植病會刊 6:17-24.檢測11種碳素源及19種氮素源對芒果炭疽病菌胞子發芽率及發芽後菌 絲生長的影響,結果顯示各營養素有不同的效果。一般而言,營養對本菌胞子發芽與菌絲生 長的影響呈一致的關係。 其中加入 0.5 % (w/v) 之 lactose、 lysine、 alanine 及 asparagine 對胞子發芽率及菌絲生長呈顯著的促進作用, 惟相同濃度之 glycine、 histidine 及 cysteine 則會完全抑制胞子的發芽。所有供試碳素源與氮素源均不會促進附 著器的形成。經離心水洗之胞子泡浸於去離子水中,水溶液中蛋白質與碳水化合物濃度隨著 泡浸時間增加而增加,但無法偵測到 mycosporine 之類胞子發芽自我抑制物質。 胞子外泌 物能促進胞子發芽,並對病害發展有促進的作用。除去胞子外泌物後之胞子對芒果新生葉片 之病原性明顯較未水洗之胞子弱,而胞子外泌物不論經高壓殺菌與否,均能促進發病。傷口 接種對病害的擴展有明顯的促進作用。 以能促進胞子發芽之 0.5 % (w/v) lactose, asparagine 及 lysine 添加於水洗胞子,均能促進發病。 |
英文摘要 | Weng, F. Y. and Chuang, T. Y. 1997. Nutrient requirement of conidial g- ermination and characteristics of spore matrix for mango anthracnose fungus. Plant Pathol. Bull. 6:17-24. (Department of Plant Pathology and Entomology, National Taiwan University, Taipei, Taiwan, R.O.C.) On the germination test of conidia of mango anthracnose fungus (Colletrichum gloeosporioides), addition of various carbon and nitrogen source might affect germination rate, germinating hyphal growth and appressorium formation. Generally, nutrient effect on conidial germination paralleled to that on the germination rate of conidia and promoted the growth of hypha. On the other hand, the same concentration of glycine, histidine and cysteine completely inhibited the conidial germination. All tested carbon and nitrogen sources did not enhance appressorium formation. When washed spores of the fungus were immersed in deionized water, the concentration of protein and carbohydrate increased with increasing incubation time in aqueous solution. However, mycosporine was not detected in the solution. The spore matrix might enhance conidial germination and was able to stimulate anthracnose disease development on the young leaves of mango (var. Irwin). Symptoms developed more faster in the leaves which were inoculated with the mix of washed spores and conidial matrix than that inoculated with washed spores alone. Moreover, the stimulating effect of the matrix was heat stable, because autoclaved matrix also stimulated the disease development as well as the crude matrix. However, wounded inoculation was capable of enhancing the disease development obviously. Addition of 0.5% lactose, asparagine and lysine into washed spores also stimulated lesion expansion on the young leaves of mango (var. Irwin). |
本系統中英文摘要資訊取自各篇刊載內容。