Degradation and metabolization of the pigment—melanoidin in distillery effluent by the marine cyanobacterium Oscillatoria boryana BDU 92181

Kalavathi, D.; Uma, Lakshmanan; Gopalakrishnan, Subramaniam

doi:10.1016/s0141-0229(01)00383-0

Cited by 113 publications

(7 citation statements)

References 15 publications

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“…Further, the sustenance of ROS clearly depicts the stress response in L. valderiana BDU20041 as cyanobacteria maintain their antioxidants level by release of reactive oxygen species into the milieu [5,24]. Studies with eukaryotic and bacterial systems showed that, low levels of AOS are indispensable to act in cellular signaling and in the control of gene expression [25].…”

Section: Resultsmentioning

confidence: 99%

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Characterization of manganese superoxide dismutase from a marine cyanobacterium Leptolyngbya valderianaBDU20041

et al. 2010

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BackgroundCyanobacteria are recognized as the primordial organisms to grace the earth with molecular oxygen ~3.5 billion years ago as a result of their oxygenic photosynthesis. This laid a selection pressure for the evolution of antioxidative defense mechanisms to alleviate the toxic effect of active oxygen species (AOS) in cyanobacteria. Superoxide dismutases (SODs) are metalloenzymes that are the first arsenal in defense mechanism against oxidative stress followed by an array of antioxidative system. Unlike other living organisms, cyanobacteria possess multiple isoforms of SOD. Hence, an attempt was made to demonstrate the oxidative stress tolerance ability of marine cyanobacterium, Leptolyngbya valderiana BDU 20041 and to PCR amplify and sequence the SOD gene, the central enzyme for alleviating stress.ResultL. valderiana BDU 20041, a filamentous, non-heterocystous marine cyanobacterium showed tolerance to the tested dye (C.I. Acid Black 1) which is evident by increased in biomass (i.e.) chlorophyll a. The other noticeable change was the total ROS production by culture dosed with dye compared to the control cultures. This prolonged incubation showed sustenance, implying that cyanobacteria maintain their antioxidant levels. The third significant feature was a two-fold increase in SOD activity of dye treated L. valderiana BDU20041 suggesting the role of SOD in alleviating oxidative stress via Asada-Halliwell pathway. Hence, the organism was PCR amplified for SOD gene resulting in an amplicon of 550 bp. The sequence analysis illustrated the presence of first three residues involved in motif; active site residues at H4, 58 and D141 along with highly conserved Mn specific residues. The isolated gene shared 63.8% homology with MnSOD of bacteria confirmed it as Mn isoform. This is the hitherto report on SOD gene from marine cyanobacterium, L. valderiana BDU20041 of Indian subcontinent.ConclusionGeneration of Reactive Oxygen Species (ROS) coupled with induction of SOD by marine cyanobacterium, L. valderiana BDU20041 was responsible for alleviating stress caused by an azo dye, C. I. Acid Black 1. The partial SOD gene has been sequenced and based on the active site, motif and metal specific residues; it has been identified as Mn metalloform.

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Section: Resultsmentioning

confidence: 99%

“…For the survival of cyanobacteria with oxygenic photosynthesis, the selection pressure led to the evolution of SODs [2-7]. Cyanobacteria are well documented for its ability to maintain the antioxidant levels by releasing H 2 O 2 into the environment [2-5]. The prime armory for the release of H 2 O 2 is superoxide dismutases.…”

Section: Introductionmentioning

confidence: 99%

Characterization of manganese superoxide dismutase from a marine cyanobacterium Leptolyngbya valderianaBDU20041

et al. 2010

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“…Some species of cyanobacteria possess the characteristics to decontaminate specific pollutants; a list of these potential bio-remediators is summarized in Table 2 below. Wastewater treatment and help to reduce calcium and chloride content in water bodies for fish survival [102] Oscillatoria boryana BDU 92181 Removal of melanoidin from distillery effluents [103] Arthrospira genomes (Arthrospira maxima CS-328, Arthrospira sp. PCC8005, A. platensis NIES-39, A. platensis Paraca P0)…”

Section: Environmental Implicationsmentioning

confidence: 99%

Cyanobacteria: Review of Current Potentials and Applications

Choo²,

et al. 2020

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Continual increases in the human population and growing concerns related to the energy crisis, food security, disease outbreaks, global warming, and other environmental issues require a sustainable solution from nature. One of the promising resources is cyanobacteria, also known as blue-green algae. They require simple ingredients to grow and possess a relatively simple genome. Cyanobacteria are known to produce a wide variety of bioactive compounds. In addition, cyanobacteria’s remarkable growth rate enables its potential use in a wide range of applications in the fields of bioenergy, biotechnology, natural products, medicine, agriculture, and the environment. In this review, we have summarized the potential applications of cyanobacteria in different areas of science and development, especially related to their use in producing biofuels and other valuable co-products. We have also discussed the challenges that hinder such development at an industrial level and ways to overcome such obstacles.

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“…BDU 30501 and Halobacterium US 101 can be utilized for minimizing the amount of calcium and chloride in wastewater to a level that can support the survival of fishes (Uma and Subramanian, 1990). Similarly, Phormidium valderianum BDU 30501 and Oscillatoria boryana BDU 92181 can be utilized to remove phenol and melanoidin, respectively, from the effluents of distillery (Shashirekha et al, 1997;Kalavathi et al, 2001). Desertification is another challenge for sustainable agriculture practices which can be reversed by the application of cyanobacterial inoculums.…”

Section: Cyanobacteria As Bioremediatorsmentioning

confidence: 99%

Cyanobacterial Farming for Environment Friendly Sustainable Agriculture Practices: Innovations and Perspectives

Pathak

Rajneesh

Maurya

et al. 2018

Front. Environ. Sci.

166

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Sustainable supply of food and energy without posing any threat to environment is the current demand of our society in view of continuous increase in global human population and depletion of natural resources of energy. Cyanobacteria have recently emerged as potential candidates who can fulfill abovementioned needs due to their ability to efficiently harvest solar energy and convert it into biomass by simple utilization of CO 2 , water and nutrients. During conversion of radiant energy into chemical energy, these biological systems produce oxygen as a by-product. Cyanobacterial biomass can be used for the production of food, energy, biofertilizers, secondary metabolites of nutritional, cosmetics, and medicinal importance. Therefore, cyanobacterial farming is proposed as environment friendly sustainable agricultural practice which can produce biomass of very high value. Additionally, cyanobacterial farming helps in decreasing the level of greenhouse gas, i.e., CO 2 , and it can be also used for removing various contaminants from wastewater and soil. However, utilization of cyanobacteria for resolving the abovementioned problems is subjected to economic viability. In this review, we provide details on different aspects of cyanobacterial system that can help in developing sustainable agricultural practices. We also describe different large-scale cultivation systems for cyanobacterial farming and discuss their merits and demerits in terms of economic profitability.

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Degradation and metabolization of the pigment—melanoidin in distillery effluent by the marine cyanobacterium Oscillatoria boryana BDU 92181

Cited by 113 publications

References 15 publications

Characterization of manganese superoxide dismutase from a marine cyanobacterium Leptolyngbya valderianaBDU20041

Characterization of manganese superoxide dismutase from a marine cyanobacterium Leptolyngbya valderianaBDU20041

Cyanobacteria: Review of Current Potentials and Applications

Cyanobacterial Farming for Environment Friendly Sustainable Agriculture Practices: Innovations and Perspectives

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