Starmer W T, Barker J S, Phaff H J, Fogleman J C
Aust J Biol Sci. 1986;39(1):69-77.
The interactions of yeasts growing in decaying cactus tissue with and without 2-propanol were studied with respect to the costs and benefits provided to three cactophilic Drosophila species (D. mojavensis, D. arizonensis and D. buzzatii). Two common cactus yeasts, Candida sonorensis and Cryptococcus cereanus, which can tolerate and metabolize 2-propanol, provide benefits to the three Drosophila species in the presence of the alcohol, as compared with another common cactus yeast, Pichia cactophila, which has less tolerance and cannot metabolize 2-propanol. Because 2-propanol is commonly found in decaying cactus tissue and C. sonorensis and Cr. cereanus are also frequently recovered from the rotting tissue being utilized by the Drosophila species, the interactions described here are viewed as a possible adaptation in which the yeast provides benefits to one of its vectors by metabolism of 2-propanol in the habitat.
研究了在有和没有2-丙醇的腐烂仙人掌组织中生长的酵母与三种嗜仙人掌果蝇物种（D. mojavensis、D. arizonensis和D. buzzatii）之间的相互作用，涉及为这些果蝇提供的成本和益处。两种常见的仙人掌酵母，即能耐受并代谢2-丙醇的索诺拉念珠菌和 Cereanus隐球菌，与另一种耐受性较低且不能代谢2-丙醇的常见仙人掌酵母嗜仙人掌毕赤酵母相比，在有酒精存在的情况下能为这三种果蝇提供益处。由于2-丙醇常见于腐烂的仙人掌组织中，且索诺拉念珠菌和Cereanus隐球菌也经常从果蝇物种所利用的腐烂组织中分离出来，这里描述的相互作用被视为一种可能的适应性变化，即酵母通过在栖息地中代谢2-丙醇为其一种载体提供益处。
