Why grow Ulva? Its potential role in the future of aquaculture

Bolton, John J.; Cyrus, Mark D.; Brand, Morgan J.; Joubert, Michaël; Macey, Brett M.

doi:10.1127/pip/2016/0058

Cited by 41 publications

(30 citation statements)

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“…Seaweed aquaculture is a growing industry worldwide, which is worth more than 6 billion US$ per year (Buchholz et al 2012;Buschmann et al 2017;FAO 2018). The green seaweed genus Ulva has received a lot of attention due to its high productivity and wide environmental tolerance (Ye et al 2011;Smetacek and Zingone 2013;Bolton et al 2016). In general, Ulva spp.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, Ulva spp. have great potential for bioremediation of nutrient-polluted water and as extractive species in integrated multi-trophic aquaculture (IMTA) systems (Bolton et al 2016). Production of Ulva spp.…”

Section: Introductionmentioning

confidence: 99%

“…has been successfully integrated with other types of aquaculture such as abalone (Bolton et al 2009) and fish (Sphigel et al 2017). Apart from its beneficial function as a nutrient scrubber, the produced biomass also has very interesting functional and nutritional properties and can be used directly as food (Bolton et al 2016), or turned into value-added products such as functional foods, cosmeceuticals, nutraceuticals, or pharmaceuticals (Hafting et al 2015). Furthermore, there is a growing interest in Ulva spp.…”

Section: Introductionmentioning

confidence: 99%

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Effects of irradiance, temperature, nutrients, and pCO2 on the growth and biochemical composition of cultivated Ulva fenestrata

et al. 2020

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Ulva fenestrata is an economically and ecologically important green algal species with a large potential in seaweed aquaculture due to its high productivity, wide environmental tolerance, as well as interesting functional and nutritional properties. Here, we performed a series of manipulative cultivation experiments in order to investigate the effects of irradiance (50, 100, and 160 μmol photons m−2 s−1), temperature (13 and 18 °C), nitrate (< 5, 150, and 500 μM), phosphate (< 1 and 50 μM), and pCO2 (200, 400, and 2500 ppm) on the relative growth rate and biochemical composition (fatty acid, protein, phenolic, ash, and biochar content) in indoor tank cultivation of Swedish U. fenestrata. High irradiance and low temperature were optimal for the growth of this northern hemisphere U. fenestrata strain, but addition of nutrients or changes in pCO2 levels were not necessary to increase growth. Low irradiance resulted in the highest fatty acid, protein, and phenolic content, while low temperature had a negative effect on the fatty acid content but a positive effect on the protein content. Addition of nutrients (especially nitrate) increased the fatty acid, protein, and phenolic content. High nitrate levels decreased the total ash content of the seaweeds. The char content of the seaweeds did not change in response to any of the manipulated factors, and the only significant effect of changes in pCO2 was a negative relationship with phenolic content. We conclude that the optimal cultivation conditions for Swedish U. fenestrata are dependent on the desired biomass traits (biomass yield or biochemical composition).

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of irradiance, temperature, nutrients, and pCO2 on the growth and biochemical composition of cultivated Ulva fenestrata

et al. 2020

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“…are popularly known as "Sea Lettuce" and belong to family Ulvaceae of phylum Chlorophyta. These green seaweeds are known to be opportunistic and highly resilient, occurring in intertidal and subtidal coastal areas, also being able to thrive in freshwater, estuarine environments and even contaminated sites (e.g., sewage sources) [1].…”

Section: Introductionmentioning

confidence: 99%

Site-Specific Lipidomic Signatures of Sea Lettuce (Ulva spp., Chlorophyta) Hold the Potential to Trace Their Geographic Origin

et al. 2020

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The wild harvest and aquaculture of Ulva spp. has deserved growing attention in Europe. However, the impact of geographical origin on the biochemical composition of different species and/or strains is yet to be described in detail. Hence, the present study aimed to detect the variability of the lipidome of different species and/or strains of Ulva originating from different geographic locations. We hypothesized that lipidomic signatures can be used to trace the geographic origin post-harvesting of these valuable green seaweeds. Ulva spp. was sampled from eight distinct ecosystems along the Atlantic Iberian coast and Ulva rigida was sourced from an aquaculture farm operating a land-based integrated production site. Results showed significant differences in the lipidomic profile displayed by Ulva spp. originating from different locations, namely, due to different levels of polyunsaturated betaine lipids and galactolipids; saturated betaine lipids and sulfolipids; and some phospholipid species. Overall, a set of 25 site-specific molecular lipid species provide a unique lipidomic signature for authentication and geographic origin certification of Ulva species. Present findings highlight the potential of lipidome plasticity as a proxy to fight fraudulent practices, but also to ensure quality control and prospect biomass for target bioactive compounds.

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“…Although not toxic, green tides have led to fatalities due to the hydrogen sulphide that is formed when the dead biomass decays. Despite the harmful consequences of Ulva's rapid growth rate, beneficial aspects include exploitation of its biomass-e.g., for biofuel production, protein for animal feed, and the removal of excess nutrients in integrated multitrophic aquaculture systems [15].…”

Section: Introductionmentioning

confidence: 99%

Insights into the Evolution of Multicellularity from the Sea Lettuce Genome

et al. 2018

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We report here the 98.5 Mbp haploid genome (12,924 protein coding genes) of Ulva mutabilis, a ubiquitous and iconic representative of the Ulvophyceae or green seaweeds. Ulva's rapid and abundant growth makes it a key contributor to coastal biogeochemical cycles; its role in marine sulfur cycles is particularly important because it produces high levels of dimethylsulfoniopropionate (DMSP), the main precursor of volatile dimethyl sulfide (DMS). Rapid growth makes Ulva attractive biomass feedstock but also increasingly a driver of nuisance "green tides." Ulvophytes are key to understanding the evolution of multicellularity in the green lineage, and Ulva morphogenesis is dependent on bacterial signals, making it an important species with which to study cross-kingdom communication. Our sequenced genome informs these aspects of ulvophyte cell biology, physiology, and ecology. Gene family expansions associated with multicellularity are distinct from those of freshwater algae. Candidate genes, including some that arose following horizontal gene transfer from chromalveolates, are present for the transport and metabolism of DMSP. The Ulva genome offers, therefore, new opportunities to understand coastal and marine ecosystems and the fundamental evolution of the green lineage.

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Why grow Ulva? Its potential role in the future of aquaculture

Cited by 41 publications

References 0 publications

Effects of irradiance, temperature, nutrients, and pCO2 on the growth and biochemical composition of cultivated Ulva fenestrata

Effects of irradiance, temperature, nutrients, and pCO2 on the growth and biochemical composition of cultivated Ulva fenestrata

Site-Specific Lipidomic Signatures of Sea Lettuce (Ulva spp., Chlorophyta) Hold the Potential to Trace Their Geographic Origin

Insights into the Evolution of Multicellularity from the Sea Lettuce Genome

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