Concise review of green algal genus Ulva Linnaeus

Mantri, Vaibhav A.; Kazi, Mudassar Anisoddin; Balar, Nikunj; Gupta, Vishal; Gajaria, Tejal K.

doi:10.1007/s10811-020-02148-7

Cited by 64 publications

(40 citation statements)

References 190 publications

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“…Among commercialized macroalgae, Ulva species (commonly known as sea lettuce) have long been used as food. Commercially available Ulva species can be collected from wild populations, but they are increasingly cultivated in outdoor facilities [ 24 , 25 , 26 ]. In particular, Ulva species are successfully produced year-round in land-based integrated multi-trophic aquaculture (IMTA) systems [ 25 ], which provide a sustainable and environmentally friendly alternative to reduce the potential impact and dependence from wild populations.…”

Section: Introductionmentioning

confidence: 99%

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Polar Lipids of Commercial Ulva spp. of Different Origins: Profiling and Relevance for Seaweed Valorization

Moreira

Costa

Melo

et al. 2021

Foods

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Macroalgae of the genus Ulva have long been used as human food. Local environmental conditions, among other factors, can have an impact on their nutrient and phytochemical composition, as well as on the value of the seaweed for food and non-food applications. This study is the first to initiate a comparison between commercial Ulva spp. from different European origins, France (FR, wild-harvested Ulva spp.), and Portugal (PT, farm-raised Ulva rigida), in terms of proximate composition, esterified fatty acids (FA), and polar lipids. The ash content was higher in PT samples, while FR samples had higher levels of proteins, lipids, and carbohydrates and other compounds. The profile of esterified FA, as well as FA-containing polar lipids at the class and species levels were also significantly different. The FR samples showed about three-fold higher amount of n-3 polyunsaturated FA, while PT samples showed two-fold higher content of monounsaturated FA. Quantification of glycolipids and phospholipids revealed, respectively, two-fold and three-fold higher levels in PT samples. Despite the differences found, the polar lipids identified in both batches included some lipid species with recognized bioactivity, valuing Ulva biomass with functional properties, increasing their added value, and promoting new applications, namely in nutraceutical and food markets.

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Section: Introductionmentioning

confidence: 99%

“…It should be noted that commercial Ulva species are generally labeled as sea lettuce or Ulva spp. (with no scientific name) because the taxonomy for this genus is challenging [ 24 ], and it is economically unviable to genotype each batch on the market, especially for batches collected in the wild.…”

Section: Introductionmentioning

confidence: 99%

Polar Lipids of Commercial Ulva spp. of Different Origins: Profiling and Relevance for Seaweed Valorization

Moreira

Costa

Melo

et al. 2021

Foods

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Section: Introductionmentioning

confidence: 99%

“…Green macroalgae species of the genus Ulva are distributed worldwide, occupying different habitats due to its tolerance to determinant factors such as light, temperature and salinity (Mantri et al, 2020). They show high growth rates and productivities under very diverse conditions, with highly exploitable biochemical profiles (Kidgell et al, 2019;Mata et al, 2016), including bioactive metabolites that are interesting for a high number of economical applications including food, feed, fertilizers or biomedicine (Mantri et al, 2020). In this context, abundant literature assessing the dietary inclusion of Ulva species and their positive effects on different farmed fish species, including Sparus aurata L., is available (Batista et al, 2020;Kazemi et al, 2018;Rico et al, 2016;Tapia-Paniagua et al, 2019;Vizcaíno et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Effects of a short pulse administration ofUlva rigidaon innate immune response and intestinal microbiota inSparus auratajuveniles

Abdala-Díaz

García‐Márquez

Rico

et al. 2021

Aquaculture Research

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Given the potential of algae as a new aquafeed ingredient, this study evaluated the effect of the tank-cultivated macroalgae Ulva rigida C. Agardh (Chlorophyta) on innate immune response, intestinal microbiota and their resistance against Photobacterium damselae subsp. piscicida in juvenile gilthead seabream (Sparus aurata L.) after a short pulse of administration. An algae-free diet was used as control, and an experimental diet was formulated containing 25% of U. rigida (UL-25). After 2, 7, 15 and 30 days biological samples were taken. No statistical significance (p > 0.05) was detected in respiratory burst activity. Diet UL-25 significantly enhanced alternative complement pathway activity respect to control diet from the beginning of the experiment (p < 0.05). When fish were challenged against P. damselae subsp. piscicida, UL-25-fed fish were more resistant against the pathogen than the fish fed control diet, obtaining a relative survival percentage of 54.55%. The ability of UL-25 diet to modify the intestinal microbiota was also confirmed. In conclusion, the use of a short pulse of dietary administration of 25% U. rigida in S. aurata diet modulates the immune response, intestinal microbiota and reduced the mortality rate during P. damselae subsp. piscicida infection.

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“…Ulvans are sulphated polysaccharides, extracted from the cell wall of green seaweeds, in particular from various species of the genus Ulva, which generally accounts for 9–36% of their dry biomass [ 99 , 100 , 101 ]. Ulvans are extracted from the algal biomass either by acid or enzyme-based extraction procedures, and are mainly composed of sulphated rhamnose, uronic acids (glucuronic acid and iduronic acid) and xylose [ 100 , 102 , 103 ].…”

Section: Bioactive Compounds Present In Different Seaweeds and Thementioning

confidence: 99%

Seaweed-Based Compounds and Products for Sustainable Protection against Plant Pathogens

et al. 2021

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Sustainable agricultural practices increasingly demand novel, environmentally friendly compounds which induce plant immunity against pathogens. Stimulating plant immunity using seaweed extracts is a highly viable strategy, as these formulations contain many bio-elicitors (phyco-elicitors) which can significantly boost natural plant immunity. Certain bioactive elicitors present in a multitude of extracts of seaweeds (both commercially available and bench-scale laboratory formulations) activate pathogen-associated molecular patterns (PAMPs) due to their structural similarity (i.e., analogous structure) with pathogen-derived molecules. This is achieved via the priming and/or elicitation of the defense responses of the induced systemic resistance (ISR) and systemic acquired resistance (SAR) pathways. Knowledge accumulated over the past few decades is reviewed here, aiming to explain why certain seaweed-derived bioactives have such tremendous potential to elicit plant defense responses with considerable economic significance, particularly with increasing biotic stress impacts due to climate change and the concomitant move to sustainable agriculture and away from synthetic chemistry and environmental damage. Various extracts of seaweeds display remarkably different modes of action(s) which can manipulate the plant defense responses when applied. This review focuses on both the similarities and differences amongst the modes of actions of several different seaweed extracts, as well as their individual components. Novel biotechnological approaches for the development of new commercial products for crop protection, in a sustainable manner, are also suggested.

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Concise review of green algal genus Ulva Linnaeus

Cited by 64 publications

References 190 publications

Polar Lipids of Commercial Ulva spp. of Different Origins: Profiling and Relevance for Seaweed Valorization

Polar Lipids of Commercial Ulva spp. of Different Origins: Profiling and Relevance for Seaweed Valorization

Effects of a short pulse administration ofUlva rigidaon innate immune response and intestinal microbiota inSparus auratajuveniles

Seaweed-Based Compounds and Products for Sustainable Protection against Plant Pathogens

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