Comparison of algae growth and symbiotic mechanisms in the presence of plant growth promoting bacteria and non-plant growth promoting bacteria

Peng, Huanwei; Bashan, Luz E. de; Higgins, Brian

doi:10.1016/j.algal.2020.102156

Cited by 28 publications

(14 citation statements)

References 49 publications

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“…Chlamydomonas is known to produce lumichrome (31), but lumichrome production has not been reported previously in P. tricornutum or Desmodesmus. Most previous studies of algae and lumichrome or riboflavin (vitamin B2), of which lumichrome is a derivative, have focused on possible lumichrome/riboflavin production by algal growth-promoting bacteria, as opposed to algal production (33)(34)(35). In addition to biological production, lumichrome can be produced through photochemical degradation of riboflavin (36).…”

Section: Discussionmentioning

confidence: 99%

Identification of Effector Metabolites Using Exometabolite Profiling of Diverse Microalgae

et al. 2021

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Section: Discussionmentioning

confidence: 99%

Identification of Effector Metabolites Using Exometabolite Profiling of Diverse Microalgae

et al. 2021

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“…Chlamydomonas is known to produce lumichrome (31), but lumichrome production has not been reported previously in P. tricornutum or Desmodesmus. Most previous studies of algae and lumichrome or riboflavin (vitamin B2), of which lumichrome is a derivative, have focused on possible lumichrome/riboflavin production by algal growth promoting bacteria, as opposed to algal production (33)(34)(35). Two recent studies found that exogenous lumichrome had positive growth impacts on the green algae Chlorella sorokiniana and Auxenochlorella protothecoides (33,34), while another found that riboflavin increased chlorophyll production in Chlorella vulgaris (35).…”

Section: Discussionmentioning

confidence: 99%

“…Most previous studies of algae and lumichrome or riboflavin (vitamin B2), of which lumichrome is a derivative, have focused on possible lumichrome/riboflavin production by algal growth promoting bacteria, as opposed to algal production (33)(34)(35). Two recent studies found that exogenous lumichrome had positive growth impacts on the green algae Chlorella sorokiniana and Auxenochlorella protothecoides (33,34), while another found that riboflavin increased chlorophyll production in Chlorella vulgaris (35). Supporting these studies, we found that P. tricornutum, which produced the highest level of lumichrome (Supplemental Figure S3), exhibited increased growth in response to exogenous lumichrome addition (Figure 5), indicating it may be particularly important for this model diatom.…”

Section: Discussionmentioning

confidence: 99%

Identification of effector metabolites using exometabolite profiling of diverse microalgae

Brisson

Mayali

Bowen

et al. 2021

Preprint

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Dissolved metabolites mediate algal interactions in aquatic ecosystems, but microalgal exometabolomes remain understudied. We conducted an untargeted metabolomic analysis of non-polar exometabolites exuded from four phylogenetically and ecologically diverse eukaryotic microalgal strains grown in the laboratory: freshwater Chlamydomonas reinhardtii, brackish Desmodesmus sp., marine Phaeodactylum tricornutum, and marine Microchloropsis salina, to identify released metabolites based on relative enrichment in the exometabolomes compared to cell pellet metabolomes. Exudates from the different taxa were distinct, but we did not observe clear phylogenetic patterns. We used feature based molecular networking to explore the identities of these metabolites, revealing several distinct di- and tripeptides secreted by each of the algae, lumichrome, a compound that is known to be involved in plant growth and bacterial quorum sensing, and novel prostaglandin-like compounds. We further investigated the impacts of exogenous additions of eight compounds selected based on exometabolome enrichment on algal growth. Of the these, five (lumichrome, 5’-S-methyl-5'-thioadenosine, 17-phenyl trinor prostaglandin A2, dodecanedioic acid, and aleuritic acid) impacted growth in at least one of the algal cultures. Two of these (dodecanedioic acid and aleuritic acid) produced contrasting results, increasing growth in some algae and decreasing growth in others. Together, our results reveal new groups of microalgal exometabolites, some of which could alter algal growth when provided exogenously, suggesting potential roles in allelopathy and algal interactions.

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“…Furthermore, at later stage of the experiment, the live bacteria continued to decline in both M-B and B-O due to depletion of nutrients (especially the organic carbon) in SWM, but the number of viable bacteria in M-B was still higher than that in the B-O. It might be put down to the release of nutrients (such as dissolved organic carbon) by microalgae metabolism that allow more bacteria to survive (Natrah et al 2014, Peng et al 2021…”

mentioning

confidence: 97%

“…from 49.73-99.15%(Lananan et al 2014), which proved the superiority for improving the N, P removal e ciency by co-culture of microalgae and bacteria. The co-culture mode of M-B provided a new approach to solute the common problems of the N, P control in wastewater treatment, such as: the removal capacity of bacteria was limited by the low C/N ratio, bacteria with e cient P removal performance were di cult to isolated (Zhang et al 2020b), single microalgae systems needed relatively long treatment cycles and released excessive alkali resulting in high pH in e uent(Li et al 2018, Peng et al 2021). This study expanded the application prospect of the Chlorella sp.…”

mentioning

confidence: 99%

Efficient nitrogen and phosphorus removal from wastewater by screening and constructing a novel Chlorella sp.-Bacillus taeanensis SD148BN12 consortium

Liu

Zhang

et al. 2022

Preprint

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The discharge of wastewater rich in nitrogen and phosphorus were posing a serious threat to ecological balance and human health. In the study, Bacillus taeanensis SD148BN12 with biosafety and capability of aerobic nitrogen removal by assimilation was selected to construct the Chlorella sp.-Bacillus taeanensis SD148BN12 consortium (M-B). Compared with single axenic Chlorella sp. and single Bacillus taeanensis SD148BN12, M-B improved the removal efficiencies of total nitrogen (91.89%) and total phosphorus (94.58%), the biomass yield (0.52 g/L), as well as the contents of carbohydrate and lipid after cultivation in synthetic wastewater. M-B had the high and stable nitrogen removal efficiency at temperature 20-30 ℃, salinity 20-40‰, light intensity 50-200 μmol photons m-2 s-1, pH 6-9, C/N ratio 1-10, N/P ratio 4-20, N concentration 1-50 mg/L. The conspicuous removal efficiency of nitrogen and phosphorus from actual marine wastewater could be realized by M-B. Meanwhile, the synergistic interaction between Chlorella sp. and strain SD148BN12 was demonstrated by the characteristics of cell growth, photosynthetic activity and material exchange. The study provided an economical and environmentally friendly strategy for efficient removal of nitrogen and phosphorus from wastewater (including the neglected aquaculture wastewater) by establishing a hopeful microalgae-bacteria consortium.

show abstract

Comparison of algae growth and symbiotic mechanisms in the presence of plant growth promoting bacteria and non-plant growth promoting bacteria

Cited by 28 publications

References 49 publications

Identification of Effector Metabolites Using Exometabolite Profiling of Diverse Microalgae

Identification of Effector Metabolites Using Exometabolite Profiling of Diverse Microalgae

Identification of effector metabolites using exometabolite profiling of diverse microalgae

Efficient nitrogen and phosphorus removal from wastewater by screening and constructing a novel Chlorella sp.-Bacillus taeanensis SD148BN12 consortium

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