Seaweeds’ carbohydrate polymers as plant growth promoters

Pacheco, Diana; Cotas, João; Rocha, Carolina P.; Araújo, Glácio Souza; Figueirinha, Artur; Gonçalves, Ana M.M.; Bahćevandžiev, Kiril; Pereira, Leonel

doi:10.1016/j.carpta.2021.100097

Cited by 19 publications

(11 citation statements)

References 70 publications

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“…The degree of sulphation can directly influence the bioactivity of the polysaccharides. Typically, alginophytes, such as S. polyschides, show the lowest sulphate group content, whereas carrageenophytes, the highest [22], which was supported by this study. λ-carrageenan was the polysaccharide that had the most bioactivity and positive effect in turnip plants.…”

Section: Discussionsupporting

confidence: 86%

Seaweed Polysaccharides as a Potential Biostimulant in Turnip Greens Production

Mamede,

Cotas,

Pereira

et al. 2023

Preprint

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Seaweed polysaccharides have been proven to achieve excellent results in plant growth parameters, when compared to synthetic commercial fertilizers. When applied to the soil directly or sprayed on the foliage, seaweed poly- and oligosaccharides can improve plant vigor, increase the uptake of soil nutrients, and protect plants against several abiotic and biotic stresses, by stimulating a plant to produce secondary metabolites and manage its defense pathways. In this study, three different polysaccharides (alginate, agar and carrageenan) were extracted from one brown seaweed, Saccorhiza polyschides, and two red seaweeds, Gracilaria gracilis and Chondrus crispus, respectively, with intention to analyze their impact on growth, development and metabolism of turnip greens (Brassica napus L.) plants. Altogether, the turnip plants treated with the carrageenan solutions of Chondrus crispus showed the best results in improving the crop’s productivity, particularly, λ-carrageenan extracted from the tetrasporophyte generation of Chondrus crispus, which had the highest bioactivity and positive effect in turnip plants among all treatments. λ-carrageenan has shown that can improve plant growth, increase plant’s biomass, and root system, enhance photosynthetic activity and essential soil nutrient uptake.

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Section: Discussionsupporting

confidence: 86%

Seaweed Polysaccharides as a Potential Biostimulant in Turnip Greens Production

Mamede,

Cotas,

Pereira

et al. 2023

Preprint

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“…To date, the application of biostimulants in agriculture has shown huge potential not only to improve crop yield and quality, reducing fertilizer requirements, but also to enhance plants resistance to stresses related to climate change, such as drought [ 4 , 5 , 6 ]. In this regard, seaweeds are amazing sources of bioactive compounds, useful to promote plant growth, increase yields and plant’s tolerance to abiotic and biotic stresses.…”

Section: Introductionmentioning

confidence: 99%

The Role of Protein-Rich Extracts from Chondrus crispus as Biostimulant and in Enhancing Tolerance to Drought Stress in Tomato Plants

Domingo

Marsoni

Álvarez-Viñas

et al. 2023

Plants

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The application of seaweed extract-based biostimulants is a promising approach for achieving sustainable agriculture, with an enormous potential of improving crop yield and mitigating climate change effects. Abiotic stressors, such as drought, are major factors resulting in tomato (Solanum lycopersicum L.) yield losses and seaweed-based biostimulants have been proposed as an eco-friendly strategy to counteract this negative impact. Chondrus crispus is a common red seaweed widely used as source of carrageenans, not yet explored as a plant biostimulant. In this study, a protein hydrolysate-rich C. crispus extract, by-products of the carrageenan extraction, was tested on tomato plants under well-watered condition and water shortage. The foliar application of the protein-rich C. crispus extract conferred drought tolerance to tomato plants resulting in less noticeable visual stress symptoms. Treated plants showed higher shoot height and biomass under both well-watered and water deficit conditions, evidencing the double effect exerted by this new biostimulant, as plant growth promoter and drought stress protector. The treatment with the biostimulant had an effect on levels of abscisic acid and proline, and triggered the expression of Solyc02g084840, a drought marker gene. Finally, a label-free mass spectrometric approach allowed us to identify phycoerythrins and phycocyanins as major bioactive proteins contained in the extract. Altogether, these results indicate that the foliar application of protein hydrolysate-rich extracts from C. crispus improved tomato plant growth and tolerance to drought stress, suggesting a new opportunity for further applications in the agriculture and horticultural sectors.

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“…The availability of water and fertilizers influences agricultural production. Furthermore, the increase in fertilizer costs has had a direct impact on the recent rise in food prices, so fertilizers with lower costs and higher efficiency need attention [ 76 , 77 ]. Targeted fertilizer delivery systems with a high delivery capability, controlled release of nutrients, control of pests and diseases, and increasing resistance to drought are special goals that should be considered in the agricultural sector.…”

Section: Cmc Applications In Agriculturementioning

confidence: 99%

Micro-/Nano-Carboxymethyl Cellulose as a Promising Biopolymer with Prospects in the Agriculture Sector: A Review

et al. 2023

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The increase in the population rate has increased the demand for safe and quality food products. However, the current agricultural system faces many challenges in producing vegetables and fruits. Indiscriminate use of pesticides and fertilizers, deficiency of water resources, short shelf life of products postharvest, and nontargeted delivery of agrochemicals are the main challenges. In this regard, carboxymethyl cellulose (CMC) is one of the most promising materials in the agriculture sector for minimizing these challenges due to its mechanical strength, viscosity, wide availability, and edibility properties. CMC also has high water absorbency; therefore, it can be used for water deficiency (as superabsorbent hydrogels). Due to the many hydroxyl groups on its surface, this substance has high efficacy in removing pollutants, such as pesticides and heavy metals. Enriching CMC coatings with additional substances, such as antimicrobial, antibrowning, antioxidant, and antisoftening materials, can provide further novel formulations with unique advantages. In addition, the encapsulation of bioactive materials or pesticides provides a targeted delivery system. This review presents a comprehensive overview of the use of CMC in agriculture and its applications for preserving fruit and vegetable quality, remediating agricultural pollution, preserving water sources, and encapsulating bioactive molecules for targeted delivery.

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Seaweeds’ carbohydrate polymers as plant growth promoters

Cited by 19 publications

References 70 publications

Seaweed Polysaccharides as a Potential Biostimulant in Turnip Greens Production

Seaweed Polysaccharides as a Potential Biostimulant in Turnip Greens Production

The Role of Protein-Rich Extracts from Chondrus crispus as Biostimulant and in Enhancing Tolerance to Drought Stress in Tomato Plants

Micro-/Nano-Carboxymethyl Cellulose as a Promising Biopolymer with Prospects in the Agriculture Sector: A Review

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