Competition between n-alkane-assimilating yeasts and bacteria during colonization of sandy soil microcosms

被引:24
作者
Schmitz, C [1 ]
Goebel, I [1 ]
Wagner, S [1 ]
Vomberg, A [1 ]
Klinner, U [1 ]
机构
[1] Rhein Westfal TH Aachen, Inst Biol Mikrobiol 4, Lehr Forsch Inst Angew Mikrobiol, D-52056 Aachen, Germany
关键词
D O I
10.1007/s002530000348
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
An n-alkane-assimilating strain of Candida tropicalis was selected in sandy soil inoculated with microorganisms from contaminated sites. Competition experiments with n-alkane utilizers from different strain collections confirmed that yeasts overgrow bacteria in sandy soil. Acidification of the soil is one of the colonization factors useful for the yeasts. It can be counteracted by addition of bentonite, a clay mineral with high ion exchange capacity, but not, however, by kaolin. Strains of different yeast species showed different levels of competitiveness. Strains of Arxula adeninivorans. Candida maltosa, and Yarrowia lipolytica overgrew strains of C. tropicalis, C. shehatae or Pichia stipitis. Two strains of C. maltosa and Y. lipolytica coexisted during several serial transfers under microcosm conditions.
引用
收藏
页码:126 / 132
页数:7
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