COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE

Loaiza, Néstor Rosales; Vera, Patricia; Aiello-Mazzarri, Cateryna; Morales, Ever

doi:10.15446/abc.v21n2.48883

Cited by 13 publications

(3 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When carotenoids are absent, the number of phycocyanin molecules connected to the phycobilisome nucleus is strongly reduced, thus, disturbing the organization of the thylakoid membrane and affecting the microalgae growth (Tóth et al, 2015). Under the experimental conditions of this study, N. ellipsosporum seems to be associated with low concentrations of carotenoids, similar to what has been described before (Loaiza et al, 2016;Rivera-González et al, 2017).…”

Section: Laboratory Resultssupporting

confidence: 79%

Modeling the effects of light wavelength on the growth of Nostoc ellipsosporum

Ortiz-Moreno¹,

Cárdenas-Poblador²,

Agredo³

et al. 2020

Univ. Sci.

View full text Add to dashboard Cite

Mathematical models provide information about population dynamics under different conditions. In the study, four models were evaluated and employed to describe the growth kinetics of Nostoc ellipsosporum with different light wavelengths: Baranyi-Roberts, Modiﬁed Gompertz, Modiﬁed Logistic, and Richards. N. ellipsosporum was grown in BG-11 liquid medium for 9 days, using 12 hours of photoperiod and the following treatments: white light (400-800 nm), red light (650-800 nm), yellow light (550-580 nm) and blue light (460-480 nm). Each experiment was performed in triplicate. The optical density (OD) was measured on days 1, 3, 5, 7 and 9, using a spectrophotometer at 650 nm. The maximum cell growth was obtained under white light (OD650 : 0.090 ± 0.008), followed by the yellow light (OD650 :0.057 ± 0.004). Conversely, blue light showed a marked inhibitory effect on the growth of N. ellipsosporum (OD650 : 0.009 ± 0.001). The results revealed that the Baranyi-Roberts model had a better ﬁt with the experimental data from N. ellipsosporum growth in all four treatments. The ﬁndings from this modeling study could be used in several biotechnological applications that require the productionof N. ellipsosporum and its bioproducts.

show abstract

Section: Laboratory Resultssupporting

confidence: 79%

Modeling the effects of light wavelength on the growth of Nostoc ellipsosporum

Ortiz-Moreno¹,

Cárdenas-Poblador²,

Agredo³

et al. 2020

Univ. Sci.

View full text Add to dashboard Cite

show abstract

“…Furthermore, according to the monitored parameters, the maximum algae growth occurred after several days of high luminosity and temperature (Figures 3 and 4). These results could rely on the fact that N. muscorum adapts very well to environmental conditions with high exposure to UV light, unlike other cyanobacteria (Singh et al, 2011;Rosales-Loaiza et al, 2016). Ge-res 3 and 4, indicate the temperature and luminosity variations in the greenhouse.…”

Section: Discussionmentioning

confidence: 99%

Analysis of Nostoc muscorum biomass production in a hydroponic system

Ortiz-Moreno¹,

Solarte-Murillo²,

Sandoval-Parra³

2020

Orinoquia

View full text Add to dashboard Cite

Nostoc es un género de cianobacterias filamentosas con aplicaciones biotecnológicas en nutrición humana, biomedicina, biofertilización y producción comercial de biocombustibles. Sin embargo, su baja tasa de crecimiento en medio líquido por su naturaleza perifítica y su tendencia a formar biofilms, limita su producción a gran escala. Por lo tanto, el objetivo de este estudio fue analizar la producción de biomasa de Nostoc muscorum en un sistema hidropónico modificado. Para ello, se realizaron cultivos de N. muscorum por triplicado, en un sistema hidropónico bajo condiciones semicontroladas de temperatura (29 ± 13°C), intensidad lumínica (32 ± 54 μmol/m2/s) y fotoperiodo (12 horas), durante 23 días en un invernadero. La temperatura, el pH, la conductividad eléctrica y la producción de biomasa seca, fueron monitoreados en días alternados. Los resultados arrojaron que la producción máxima de biomasa seca fue de 0.2276 ± 0.0114 g/m2/día, y la productividad promedio fue de 0.4149 ± 0.0207 g/m2/día. A su vez, la producción máxima de biomasa de N. muscorum se obtuvo el día trece con 0.3185 ± 0.0159 g/m2/día. El análisis estadístico de correlación de variables ambientales no arrojó diferencias significativas, por lo que la temperatura, el pH y la conductividad eléctrica no afectaron la producción de biomasa de N. muscorum. Consecuentemente, el crecimiento algal fue influenciado por la fisiología de la especie. El soporte empleado en el sistema hidropónico permitió la adherencia y el desarrollo de la capa mucilaginosa de la cianobacteria sin requerir períodos de desecación como en los cultivos convencionales. El sistema hidropónico proporcionó un flujo continuo de nutrientes que podría prevenir el ataque de bacterias y hongos oportunistas, generando una alta tasa de crecimiento. De este modo, este sistema hidropónico representa una alternativa viable para la producción de biomasa de N. muscorum en condiciones de invernadero a gran escala.

show abstract

“…Following a 20-day period, the biomass inside the culture medium was extracted using filter paper (Whatman No. 1), with the filtrate output being used as an applied therapy (Pandey et al, 2010 andLoaiza et al, 2016).…”

Section: Preparation Of Bacterial Antagonistsmentioning

confidence: 99%

Biological Induction of Metabolic Defense Mechanisms Against Wheat Yellow Rust Using Bacterial and Organic Biocontrol Agents

Elkhwaga,

Fattouh,

Draz

et al. 2023

Egyptian Journal of Phytopathology

View full text Add to dashboard Cite

Six biocontrol agents, including bacterial antagonists; Pseudomonas fluorescens (strain OR485143), Arthrospira platensis and Nostoc muscorum, as well as organic compounds; fulvic acid, cinnamic acid and 8-Quinolinol (8-hydroxyquinoline) were tested as biological inducers against yellow rust of wheat (cv. Gemmeiza-11). In two field trials, the six biological treatments each proved to be an effective antifungal agent for inducing an adequate level of resistance against wheat yellow rust. The preinfection application resulted in a lower host response to moderate susceptibility, as well as a significant decrease in average coefficient of infection on adult plants, and subsequently increased grain yield components. The most effective treatment was 8-Quinolinol, which offered a good level of disease protection (reached 92% efficacy), followed by spraying of cinnamic acid, A. platensis and N. muscorum (89.33% efficacy each), in comparison with the fungicide propiconazole 25% (94.66% efficacy). Meanwhile, P. fluorescens and fulvic acid offered relatively low protection of 84% each. Metabolic assay of wheat leaves treated with the six biological inducers resulted in a significant accumulation of total phenolic content and an increase in the antioxidant enzymatic activity of POX and PPO enzymes. This study provides profitable results on the capability use of the tested biological agents to induce an adequate level of bioprotective effect against wheat yellow rust, as a safe and eco-friendly alternative to the synthetic fungicide application.

show abstract

COMPARATIVE GROWTH AND BIOCHEMICAL COMPOSITION OF FOUR STRAINS OF Nostoc AND Anabaena (CYANOBACTERIA, NOSTOCALES) IN RELATION TO SODIUM NITRATE

Cited by 13 publications

References 29 publications

Modeling the effects of light wavelength on the growth of Nostoc ellipsosporum

Modeling the effects of light wavelength on the growth of Nostoc ellipsosporum

Analysis of Nostoc muscorum biomass production in a hydroponic system

Biological Induction of Metabolic Defense Mechanisms Against Wheat Yellow Rust Using Bacterial and Organic Biocontrol Agents

Contact Info

Product

Resources

About