Competition between n-alkane-assimilating yeasts and bacteria during colonization of sandy soil microcosms
Competition between n-alkane-assimilating yeasts and bacteria during colonization of sandy soil microcosms
复制标题
沙土微观世界定殖过程中正烷烃同化酵母和细菌之间的竞争
DOI：
10.1007/s002530000348
复制
发表时间：
2000
影响因子：
5
通讯作者：
U. Klinner
中科院分区：
文献类型：
--
作者：
C. Schmitz;I. Goebel;S. Wagner;A. Vomberg;U. Klinner
摘要在沙质土壤中接种污染场地微生物，筛选了一株热带念珠菌正构烷烃同化菌株。与不同菌株收集的正构烷烃利用菌的竞争实验证实，酵母菌在沙质土壤中过度生长细菌。土壤酸化是对酵母有益的定植因素之一。它可以通过添加膨润土（一种具有高离子交换能力的粘土矿物）来抵消，但不能通过高岭土来抵消。不同酵母菌株表现出不同的竞争力水平。腺芽胞杆菌、麦芽糖假丝酵母菌和多脂耶氏菌的菌株超过了热带假丝酵母菌、shehatae假丝酵母菌或stipichia stipitis的菌株。在微观条件下，两株麦芽糖酵母菌和多脂酵母菌在多次连续转移中共存。
Abstract 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.