Physiological responses and productivity of the seaweed Ulva ohnoi (Chlorophyta) under changing cultivation conditions in pilot large land-based ponds

Revilla-Lovano, Stephanie; Sandoval‐Gil, Jose Miguel; Zertuche-González, José A.; Belando-Torrentes, María Dolores; Bernardeau-Esteller, Jaime; Rangel-Mendoza, Laura K.; Ferreira-Arrieta, Alejandra; Guzmán-Calderón, José M.; Camacho-Ibar, Víctor F.; Muñíz-Salazar, Raquel; Ávila-López, María del Carmen

doi:10.1016/j.algal.2021.102316

Cited by 13 publications

(10 citation statements)

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“…The cosmopolitan green seaweed Ulva (Chlorophyta), also known as sea lettuce, has been proposed as a model species for land-based aquaculture due to its high biomass productivity (Msuya and Neori 2008;Robertson-Andersson et al 2008;Bruhn et al 2011;Nikolaisen et al 2011;Praeger et al 2019;Revilla-Lovano et al 2021). Ulva also shows potential for the production of high value compounds, such as, e.g.…”

Section: Introductionmentioning

confidence: 99%

Seasonal variation in productivity, chemical composition and nutrient uptake of Ulva spp. (Chlorophyta) strains

et al. 2022

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Applications of seaweeds require the supply of uniform biomass, yet performance of Ulva is generally characterised by a wide variation across study sites and seasons, as well as among species or strains. This study aimed to determine the variation in growth, biochemical composition and nutrient uptake of five Ulva strains collected in the Eastern Scheldt estuary (the Netherlands) and cultivated under standardised outdoor conditions from July to November. Surprisingly, only two strains performed well (maximum 291 ± 95 and 570 ± 122 kg FW ha−1 day−1 for VEE and YER strain), one strain showed slow growth (maximum 155 ± 91 kg FW ha−1 day−1 for SCH strain), and the last two strains (JAC and KOM) did not grow at all. Chemical composition was only determined for the well-performing strains. For most of the parameters, strong seasonality was observed; growth, crude fat (0.4–1.3%), ash (16–25%) and starch (3–11%) decreased, whereas fibres (37–45%) and proteins (7–22% crude; 6–18% true) increased. To evaluate the bio-remediation potential, nutrient uptake of YER, VEE and SCH strains was determined from in- and outflowing water (453–2027 µmol DIN; 4–101 µmol PO4 kg FW h−1). Highest rates were observed for the SCH strain which was not in accordance with growth nor composition, suggesting that nutrients were not (all) directed towards vegetative growth. This study demonstrates a large variation in performance between different Ulva strains collected in relatively close proximity and thereby highlights the importance to test a variety of local seaweed strains prior to commercial farming.

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Section: Introductionmentioning

confidence: 99%

Seasonal variation in productivity, chemical composition and nutrient uptake of Ulva spp. (Chlorophyta) strains

et al. 2022

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“…The application of seaweed products in adequate quantities indirectly affects the nutrient acquisition capacity of plants by improving the physical, chemical, and biological characteristics of the soil or substrate [ 23 ]. Ulva ohnoi contains polyanionic compounds with strong chelating activity as phenolics [ 35 ] and ulvans [ 21 , 57 ] that can form complexes with metal ions essential for plant nutrition [ 15 , 16 , 22 ]. Likewise, some amino acids (e.g., cysteine, glycine, histidine, and glutamic acid) reported in the species [ 34 , 66 ] bind to some trace elements to form very small and electrically neutral chelates, which accelerate their uptake and transport within the plant [ 75 ].…”

Section: Resultsmentioning

confidence: 99%

“…Chlorophyll content is an accurate indicator of the overall tissue development, plant stress levels, and CO 2 uptake and is used to monitor N requirements during the crop cycle [ 35 , 75 ]. In previous studies, increases in chlorophyll content have been observed in tomato plants grown in seaweed-amended soils [ 20 , 25 , 69 ] or those treated with SEs [ 14 , 20 , 40 , 43 , 79 , 80 ].…”

Section: Resultsmentioning

confidence: 99%

“…de C.V., located in Ensenada, Baja California, Mexico. The species was identified by morphological and molecular methods [ 35 ].…”

Section: Methodsmentioning

confidence: 99%

“…The large amount of biomass deposited on coasts during green tides represents a highly exploitable resource for local communities; however, this biomass is often treated as rubbish and is not utilized [ 26 , 33 ]. Ulva ohnoi has also been successfully grown under different culture conditions and in intensive systems, which has resulted in the stable and commercial production of biomass [ 34 , 35 ]. However, few studies have evaluated the agricultural potential of this species [ 36 , 37 , 38 ].…”

Section: Introductionmentioning

confidence: 99%

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Application of Seaweed Generates Changes in the Substrate and Stimulates the Growth of Tomato Plants

Espinosa-Antón

Zamora-Natera

Zarazúa-Villaseñor

et al. 2023

Plants

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Ulva ohnoi is a cosmopolitan green seaweed with commercial potential given the biomass that may be generated. We evaluated the effects of substrate changes induced by U. ohnoi application on the vegetative response of tomato plants under greenhouse conditions. First, the decomposition dynamics and N release of the dry seaweed biomass were studied using the litterbag method. Subsequently, we evaluated the effect of seaweed powder (SP) or seaweed extract (SE) applications on substrate and plant growth. Additionally, the growth parameters responses evaluated were related to the changes in substrate properties associated with each treatment. The results showed that the dry seaweed biomass has a rapid rate of degradation (k = 0.07 day−1) and N release (k = 0.024 day−1). The SP application improved the physicochemical and biological characteristics of the substrate by increasing the availability of minerals, the fungi:bacteria ratio, and the growth morphophysiological parameters (length, area, dry and fresh weight), chlorophyll and mineral content. In contrast, SE treatment showed a positive effect on the root, mineral content, and soil microbes. This study highlights the agricultural potential of U. ohnoi powder as an alternative supplement that supports nutrition and promotes the vegetative growth of plants cultivated in soilless horticultural systems.

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Effects of energy storage by the seaweeds on their ecosystem

et al. 2021

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In marine environment, every species store energy for its own use and deliver it to its predator. Phytoplankton and seaweeds take place at the beginning of the food chain, grow in shallow waters with photosynthesis, and compete for the solar energy. Although the biomass of the phytoplankton amounts 1%‐2% of the total global plant carbon, they carry out more than 40% of the global photosynthesis. In the food chain, the largest amount of exergy is destroyed and the largest amount of entropy is generated while going from the first to the second species in the food chain, most probably because of the conversion of the plant cell into an animal cell. Results of this study indicated that the chemical nature of the stored material, for example, fat, protein, or carbohydrate, is not related with the location of the species in the food chain. Global production of macroalgae was approximately 3 million tons in 2012, and their consumption is projected to reach 13 million tons by 2050. If the energy available for the phytoplankton should be stored by the seaweeds grown in man‐made farms in irrational amounts, competition of the seaweeds with the phytoplankton may be a major blow to marine ecology.

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Physiological responses and productivity of the seaweed Ulva ohnoi (Chlorophyta) under changing cultivation conditions in pilot large land-based ponds

Cited by 13 publications

References 65 publications

Seasonal variation in productivity, chemical composition and nutrient uptake of Ulva spp. (Chlorophyta) strains

Seasonal variation in productivity, chemical composition and nutrient uptake of Ulva spp. (Chlorophyta) strains

Application of Seaweed Generates Changes in the Substrate and Stimulates the Growth of Tomato Plants

Effects of energy storage by the seaweeds on their ecosystem

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