Characterisation of bacteria from the cultures of a Chlorella strain isolated from textile wastewater and their growth enhancing effects on the axenic cultures of Chlorella vulgaris in low nutrient media
Characterisation of bacteria from the cultures of a Chlorella strain isolated from textile wastewater and their growth enhancing effects on the axenic cultures of Chlorella vulgaris in low nutrient media
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DOI：
10.1016/j.algal.2019.101666
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发表时间：
2019-12
期刊：
影响因子：
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通讯作者：
K. Tait;D. White;Susan A. Kimmance;G. Tarran;Paul A Rooks;Mark Jones;C. Llewellyn
中科院分区：
文献类型：
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作者：
K. Tait;D. White;Susan A. Kimmance;G. Tarran;Paul A Rooks;Mark Jones;C. Llewellyn
人们对利用在废水中生长的微藻来提供有用的代谢物越来越感兴趣。几种细菌已被证明会影响藻类的生长速度和质量，但尚不清楚这是否是特定细菌群所特有的，或者营养条件是否也会影响这种相互作用。与淡水小球藻相关的细菌群落。对从开放池塘纺织厂废水中分离的细菌进行了表征，并分离了不同的细菌群。我们提供的证据表明，营养浓度影响细菌群落组成。在BG 11培养基上生长时，以假单胞菌为主，而在氮磷含量较低的Chu 10培养基中，aBrevundimonasspp.增加分离出的几种细菌能够影响无菌小球藻培养物的生长。假单胞菌属在所有测试的培养基中都有负面影响，而一些分离物增强了C.生长速度较慢，但仅在初10中等。这支持了细菌刺激藻类生长不限于物种特异性相互作用而是受环境条件影响的理论。在低营养条件下，小球藻。可能越来越依赖于细菌的生长。
There is increasing interest in the use of microalgae grown on wastewater to provide useful metabolites. Several bacteria have been shown to affect the growth rate and quality of the algae, but it is not clear if this is specific to a particular group of bacteria or if nutrient conditions can also influence this interaction. The bacterial community associated with a freshwaterChlorellasp. isolated from open pond textile factory wastewater was characterised and a diverse group of bacteria isolated. We provide evidence that nutrient concentrations affect bacterial community composition. When grown in BG11 medium, the community was dominated byPseudomonassp., but when grown in Chu 10 medium (which contains lower nitrogen and phosphorus), the relative abundance of aBrevundimonasspp. increased. Several of the bacteria isolated were able to influence the growth of an axenicChlorella vulgarisculture. ThePseudomonassp. had a negative effect in all media tested whereas several isolates enhancedC. vulgarisgrowth, but only in Chu 10 medium. This supports the theory that bacterial stimulation of algal growth is not limited to species-specific interactions but is influenced by environmental conditions. In low nutrient conditions,Chlorellasp. may be increasingly dependent on bacteria for growth.