Influence of growth medium on the species-specific interactions between algae and bacteria

IF 3.6 4区 生物学 Q2 ENVIRONMENTAL SCIENCES
Kamile Jonynaite, Arunas Stirke, Henri Gerken, Wolfgang Frey, Christian Gusbeth
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Abstract

In this study, we investigated a species-specific algal–bacterial co-culture that has recently attracted worldwide scientific attention as a novel approach to enhancing algal growth rate. We report that the type of interaction between Chlorella vulgaris and bacteria of the genus Delftia is not solely determined by species specificity. Rather, it is a dynamic process of adaptation to the surrounding conditions, where one or the other microorganism dominates (temporally) depending on the growth conditions, in particular the medium. Under laboratory conditions, we found that Delftia sp. had a negative effect on C. vulgaris growth when co-cultured in a TAP medium. However, the co-culture of algae and bacteria under BG-11 and BG-11 + acetic acid resulted in an increase in algal concentration compared to algal cultures without bacteria under the same conditions. Additional chemical analysis revealed that the presence of different carbon (the main organic carbon source—acetic acid in TAP or BG-11 + acetic acid medium and inorganic carbon source—Na2CO3 in BG-11 or BG-11 + acetic acid medium) and nitrogen (NH4Cl in TAP medium and NaNO3 in BG-11 or BG-11 + acetic acid medium) species in the growth medium was one of the main factors driving the shift in interaction type.

Abstract Image

生长介质对藻类和细菌之间特定物种相互作用的影响。
在本研究中,我们调查了一种物种特异性藻类-细菌共培养,它作为一种提高藻类生长率的新方法最近引起了全世界科学界的关注。我们发现,普通小球藻与 Delftia 属细菌之间的相互作用类型并非完全由物种特异性决定。相反,这是一个适应周围环境的动态过程,其中一种或另一种微生物(在时间上)占主导地位取决于生长条件,特别是培养基。在实验室条件下,我们发现在 TAP 培养基中共同培养 Delftia sp.然而,在 BG-11 和 BG-11 + 醋酸培养基中进行藻类和细菌共培养时,与相同条件下无细菌的藻类培养相比,藻类浓度有所增加。其他化学分析显示,生长培养基中存在的不同碳(TAP 或 BG-11 + 醋酸培养基中的主要有机碳源-醋酸,以及 BG-11 或 BG-11 + 醋酸培养基中的无机碳源-Na2CO3)和氮(TAP 培养基中的 NH4Cl,以及 BG-11 或 BG-11 + 醋酸培养基中的 NaNO3)物种是导致相互作用类型转变的主要因素之一。
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来源期刊
Environmental Microbiology Reports
Environmental Microbiology Reports ENVIRONMENTAL SCIENCES-MICROBIOLOGY
CiteScore
6.00
自引率
3.00%
发文量
91
审稿时长
3.0 months
期刊介绍: The journal is identical in scope to Environmental Microbiology, shares the same editorial team and submission site, and will apply the same high level acceptance criteria. The two journals will be mutually supportive and evolve side-by-side. Environmental Microbiology Reports provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following: the structure, activities and communal behaviour of microbial communities microbial community genetics and evolutionary processes microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors microbes in the tree of life, microbial diversification and evolution population biology and clonal structure microbial metabolic and structural diversity microbial physiology, growth and survival microbes and surfaces, adhesion and biofouling responses to environmental signals and stress factors modelling and theory development pollution microbiology extremophiles and life in extreme and unusual little-explored habitats element cycles and biogeochemical processes, primary and secondary production microbes in a changing world, microbially-influenced global changes evolution and diversity of archaeal and bacterial viruses new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens.
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