Novel bioprocess for the cultivation of microalgae in hydroponic growing system of tomato plants

Barone, Valeria; Puglisi, Ivana; Fragalà, Ferdinando; Piero, Angela Roberta Lo; Giuffrida, F.; Baglieri, Andrea

doi:10.1007/s10811-018-1518-y

Cited by 72 publications

(64 citation statements)

References 20 publications

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“…They were obtained by and maintained in the algal collection of the Department of Agriculture, Food and Environment (Di3A) (University of Catania, Italy) as described in Baglieri et al [ 36 ]. Microalgal growth was conducted in 250 mL flask containing 150 mL of sterile BG11 culture medium [ 37 ] at pH 8.4, incubated on a mechanical shaker (100 rpm) at 25–30 °C, illuminated by a 3500-lx, average photon flux (PPF) 100 μmol photons m −2 s −1 light source (PHILIPS SON-T AGRO 400) with a 12 h photoperiod for 30 days in a growth chamber and aerated by pumps with 20 L h –1 1.5% CO 2 [ 38 ]. Microalgal biomasses were harvested by centrifugation (at 5000 rpm for 15 min), washed with distilled water (up conductivity < 200 μS cm −1 ), and freeze-dried as described in Puglisi et al [ 39 ].…”

Section: Methodsmentioning

confidence: 99%

Effect of Microalgal Extracts from Chlorella vulgaris and Scenedesmus quadricauda on Germination of Beta vulgaris Seeds

Puglisi

Barone

Fragalà

et al. 2020

Plants

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Sugar beet (Beta vulgaris subsp. vulgaris) is a commercially important biennial root crop, providing about 20% of the world’s annual sugar production. Seed quality is crucial for adequate plant growth and production. The productivity of sugar beet is often limited by heterogeneous germination in the field. In order to improve the sugar beet germination process, the effect of different concentrations of microalgal extracts from Chlorella vulgaris or Scenedesmus quadricauda was investigated by calculating several indices useful to evaluate the germination performance. Moreover, root morphological analysis was performed by using WinRHIZO software. B. vulgaris seeds were soaked with five different concentrations (from 0.1 to 10 mg Corg/L) of the microalgal extracts, considering the amount of organic carbon (Corg) in each extract. Our results show that these microalgal extracts exert a positive effect on sugar beet germination, by increasing efficiency and regularity of this critical process for B. vulgaris seeds. The best results, in terms of germination indices as well as root morphological traits, were reached by using C. vulgaris extract at the concentrations C2 (1 mg Corg/L) and C3 (2 mg Corg/L).

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Section: Methodsmentioning

confidence: 99%

Effect of Microalgal Extracts from Chlorella vulgaris and Scenedesmus quadricauda on Germination of Beta vulgaris Seeds

Puglisi

Barone

Fragalà

et al. 2020

Plants

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“…S. quadricauda increased the shoot growth of tomato plants, along with an increase in microalgal biomass. Taking into account that hydroponic crop productions was increased in the world, the co-production of tomato and microalgae in the hydroponic system might be suggested as a new approach for a better, cheaper and eco-friendly productions of microalgae and tomato plants [76].…”

Section: Microalgae Productionmentioning

confidence: 99%

“…Moreover, the valorisation of unused greenhouse space for indoor microalgae production might decrease their cost of production through the already presence of artificial lighting and heating [98]. In turn, the recycling of greenhouse wastewaters for microalgae productions may reduce the dependence of inorganic fertilisers and generate incomes from hydroponic co-productions [75,76]. Additionally, the plant growth-promoting compound present inside the microalgal biomass demonstrated that the nutrient concentration through microalgae production give an added value vs. the direct use of wastewater on soil [139].…”

Section: Economic Assessment Of Microalgal Extractsmentioning

confidence: 99%

Microalgal Biostimulants and Biofertilisers in Crop Productions

Ronga¹,

Biazzi²,

et al. 2019

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Microalgae are attracting the interest of agrochemical industries and farmers, due to their biostimulant and biofertiliser properties. Microalgal biostimulants (MBS) and biofertilisers (MBF) might be used in crop production to increase agricultural sustainability. Biostimulants are products derived from organic material that, applied in small quantities, are able to stimulate the growth and development of several crops under both optimal and stressful conditions. Biofertilisers are products containing living microorganisms or natural substances that are able to improve chemical and biological soil properties, stimulating plant growth, and restoring soil fertility. This review is aimed at reporting developments in the processing of MBS and MBF, summarising the biologically-active compounds, and examining the researches supporting the use of MBS and MBF for managing productivity and abiotic stresses in crop productions. Microalgae are used in agriculture in different applications, such as amendment, foliar application, and seed priming. MBS and MBF might be applied as an alternative technique, or used in conjunction with synthetic fertilisers, crop protection products and plant growth regulators, generating multiple benefits, such as enhanced rooting, higher crop yields and quality and tolerance to drought and salt. Worldwide, MBS and MBF remain largely unexploited, such that this study highlights some of the current researches and future development priorities.

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“…Stirk et al (2002) [43] applied this bioassay to evaluate the eventual presence of cytokinins in ten different strains of microalgae and claimed a positive result in all of them, being especially significant in species such as Scenedesmus quadricuada and Chlamydomonas sp. Furthermore, Barone et al (2019) developed two systems of co-cultivation with tomato seedlings using one microalga specie (Scenedesmus quadricuada (Sq) or Chlorella vulgaris (Cv)). Sq allowed an increase of 107% and Cv, of 144% of root fresh weight, after 46 days of cultivation [44].…”

Section: Cytokinin-like Effect Cucumber Cotyledon Root Expansionmentioning

confidence: 99%

“…Furthermore, Barone et al (2019) developed two systems of co-cultivation with tomato seedlings using one microalga specie (Scenedesmus quadricuada (Sq) or Chlorella vulgaris (Cv)). Sq allowed an increase of 107% and Cv, of 144% of root fresh weight, after 46 days of cultivation [44].…”

Section: Cytokinin-like Effect Cucumber Cotyledon Root Expansionmentioning

confidence: 99%

Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater

et al. 2020

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Microalgae are microorganisms with the capacity to contribute to the sustainable and healthy food production, in addition to wastewater treatment. The subject of this work was to determine the potential of Scenedesmus obliquus microalga grown in brewery wastewater to act as a plant biostimulant. The germination index of watercress seeds, as well as the auxin-like activity in mung bean and cucumber, and in the cytokinin-like activity in cucumber bioassays were used to evaluate the biostimulant potential. Several biomass processes were studied, such as centrifugation, ultrasonication and enzymatic hydrolysis, as well as the final concentration of microalgal extracts to determine their influence in the biostimulant activity of the Scenedesmus biomass. The results showed an increase of 40% on the germination index when using the biomass at 0.1 g/L, without any pre-treatment. For auxin-like activity, the best results (up to 60% with respect to control) were obtained at 0.5 g/L of biomass extract, after a combination of cell disruption, enzymatic hydrolysis and centrifugation. For cytokinin-like activity, the best results (up to 187.5% with respect to control) were achieved without cell disruption, after enzymatic hydrolysis and centrifugation at a biomass extract concentration of 2 g/L.

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Novel bioprocess for the cultivation of microalgae in hydroponic growing system of tomato plants

Cited by 72 publications

References 20 publications

Effect of Microalgal Extracts from Chlorella vulgaris and Scenedesmus quadricauda on Germination of Beta vulgaris Seeds

Effect of Microalgal Extracts from Chlorella vulgaris and Scenedesmus quadricauda on Germination of Beta vulgaris Seeds

Microalgal Biostimulants and Biofertilisers in Crop Productions

Biostimulant Potential of Scenedesmus obliquus Grown in Brewery Wastewater

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