Does quinone or phenol enrichment of humic substances alter the primary compound from a non-algicidal to an algicidal preparation?

Bährs, Hanno; Menzel, Ralph; Kubsch, Georg; R, Stösser; Putschew, Anke; Heinze, Tobias; Steinberg, Christian E. W.

doi:10.1016/j.chemosphere.2012.01.009

Cited by 15 publications

(3 citation statements)

References 44 publications

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“…3, Table SD 3). Based on previous studies, Fv/Fm is mainly used in photosynthetic activity (Bahrs et al, 2012; Control ( Chen et al, 2012;Choi et al, 2012;Kottuparambil et al, 2012;Perreault et al, 2012;Zhang et al, 2012). However, area, which represents the blockage of electron transfer from the reaction center to the quinone pool, was the most sensitive endpoint among the photosynthetic activity endpoints.…”

Section: Resultsmentioning

confidence: 99%

Cell size and the blockage of electron transfer in photosynthesis: Proposed endpoints for algal assays and its application to soil alga Chlorococcum infusionum

Nam

2015

Chemosphere

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Section: Resultsmentioning

confidence: 99%

Cell size and the blockage of electron transfer in photosynthesis: Proposed endpoints for algal assays and its application to soil alga Chlorococcum infusionum

Nam

2015

Chemosphere

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“…2 ). Humic material enriched in quinone and phenolic compounds can inhibit cyanobacterial growth ( 48 , 49 ). Phenolic photosynthetic electron transfer inhibitors, such as 2,5-dibromo-3-methyl-6-isopropyl-p-benzoquinone (DBMIB), alter the redox potential of the plastoquinone (PQ) pool of PSII by blocking forward electron transfer to the cytochrome b 6 /f complex ( 50 ).…”

Section: Discussionmentioning

confidence: 99%

Inhibition of Cyanobacterial Growth on a Municipal Wastewater Sidestream Is Impacted by Temperature

Korosh

Dutcher

Pfleger

et al. 2018

mSphere

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Cyanobacteria are viewed as promising platforms to produce fuels and/or high-value chemicals as part of so-called “biorefineries.” Their integration into wastewater treatment systems is particularly interesting because removal of the nitrogen and phosphorus in many wastewater streams is an expensive but necessary part of wastewater treatment. In this study, we evaluated strategies for cultivating Synechococcus sp. strain PCC 7002 on media comprised of two wastewater streams, i.e., treated secondary effluent supplemented with the liquid fraction extracted from sludge following anaerobic digestion. This strain is commonly used for metabolic engineering to produce a variety of valuable chemical products and product precursors (e.g., lactate). However, initial attempts to grow PCC 7002 under otherwise-standard conditions of light and temperature failed. We thus systematically evaluated alternative cultivation conditions and then used multiple methods to dissect the apparent toxicity of the media under standard cultivation conditions.

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“…We propose that the herbicidal effect of GBF is primarily due to PSII inhibition as shown in Figures 7 and 8, brought about by quinone or phenolic compounds within the "soluble microbial products" found in our EEM scans ( Figure 2). Humic material enriched in quinone and phenolic compounds can inhibit cyanobacterial growth (57,58). Phenolic photosynthetic electron transfer inhibitors, such as 2,5-Dibromo-3-methyl-6-isopropyl-p-benzoquinone (DBMIB), alter the redox potential of the PQ pool of PSII by blocking forward electron transfer to the cytochrome b 6 /f complex (59).…”

Section: Discussionmentioning

confidence: 99%

Cyanobacterial Growth on Municipal Wastewater Requires Low Temperatures

Korosh

Dutcher

Pfleger

et al. 2017

Preprint

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28Side-streams in wastewater treatment plants can serve as concentrated sources of nutrients 29 (i.e. nitrogen and phosphorus) to support the growth of photosynthetic organisms that ultimately 30 serve as feedstock for production of fuels and chemicals. However, other chemical characteristics 31 of these streams may inhibit growth in unanticipated ways. Here, we evaluated the use of liquid 32 recovered from municipal anaerobic digesters via gravity belt filtration as a nutrient source for 33 growing the cyanobacterium Synechococcus sp. strain PCC 7002. The gravity belt filtrate (GBF) 34 contained high levels of complex dissolved organic matter (DOM), which seemed to negatively 35 influence cells. We investigated the impact of GBF on physiological parameters such as growth 36 rate, membrane integrity, membrane composition, photosystem composition, and oxygen 37 evolution from photosystem II. At 37°C, we observed an inverse correlation between GBF 38 concentration and membrane integrity. Radical production was also detected upon exposure to 39 GBF at 37°C. However, at 27°C the dose dependent relationship between GBF concentration and 40 lack of membrane integrity was abolished. Immediate resuspension of strains in high doses of GBF 41 showed markedly reduced oxygen evolution rates relative to the control. Together, this suggests 42 that one mechanism responsible for GBF toxicity to Synechococcus is the interruption of 43 photosynthetic electron flow and subsequent phenomena. We hypothesize this is likely due to the 44 presence of phenolic compounds within the DOM. 45 46

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Does quinone or phenol enrichment of humic substances alter the primary compound from a non-algicidal to an algicidal preparation?

Cited by 15 publications

References 44 publications

Cell size and the blockage of electron transfer in photosynthesis: Proposed endpoints for algal assays and its application to soil alga Chlorococcum infusionum

Cell size and the blockage of electron transfer in photosynthesis: Proposed endpoints for algal assays and its application to soil alga Chlorococcum infusionum

Inhibition of Cyanobacterial Growth on a Municipal Wastewater Sidestream Is Impacted by Temperature

Cyanobacterial Growth on Municipal Wastewater Requires Low Temperatures

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