Microalgae as next generation plant growth additives: Functions, applications, challenges and circular bioeconomy based solutions

Frontiers in Plant Science, Journal Year: 2023, Volume and Issue: 14

Published: March 30, 2023

Sustainable agriculture practices involve the application of environment-friendly plant growth promoters and additives that do not negatively impact health ecosystem. Stringent regulatory frameworks restricting use synthetic agrochemicals increase in demand for organically grown crops have paved way development novel bio-based promoters. In this context, microalgae biomass derived offer sources promotors enhance crop productivity impart disease resistance. These beneficial effects could be attributed to presence wide range biomolecules such as soluble amino acid (AA), micronutrients, polysaccharides, phytohormones other signaling molecules biomass. addition, their phototrophic nature, high photosynthetic efficiency, environmental adaptability make them an attractive source biostimulants, biofertilizers biopesticides. The present review aims describe various promoting metabolites produced by on productivity. Further, elicited biostimulants with respect different modes applications seed treatments, foliar spray soil/root drenching is reviewed detail. ability tolerance against abiotic biotic stressors along mechanism action discussed paper. Although based gaining popularity, nutrient water requirements energy intensive downstream processes makes technology commercially unsustainable. Addressing challenge, we propose a circular economy model mediated bioremediation coupled biorefinery approaches generating value biofertilizer applications. We discuss new trends enhancing sustainability production co-cultivation algae hydroponics utilization effluents.

Language: Английский

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A Comprehensive Review of Microalgae and Cyanobacteria-Based Biostimulants for Agriculture Uses

Plants, Journal Year: 2024, Volume and Issue: 13(2), P. 159 - 159

Published: Jan. 6, 2024

Significant progress has been achieved in the use of biostimulants sustainable agricultural practices. These new products can improve plant growth, nutrient uptake, crop yield and quality, stress adaptation soil fertility, while reducing agriculture's environmental footprint. Although it is an emerging market, biostimulant sector very promising, hence increasing attention scientific community agro-industry stakeholders finding sources biostimulants. Recently, pro- eucaryotic microalgae have gained prominence be exploited as due to their ability produce high-value-added metabolites. Several works revealed potential microalgae- cyanobacteria-based (MCBs) growth promoters alleviators, well encouraging results pointing out that address current future challenges. In contrast macroalgae biostimulants, targeted applications MBs agriculture are still earlier stages commercial implementation constrained by lack research cost production. The purpose this paper provide a comprehensive overview on promising category highlight knowledge application prospects. Based prevailing state art, we aimed roadmap MCB formulations from cyanobacteria strain selection, algal biomass production, extraction techniques type product commercialization farmer consumer acceptance. Moreover, examples successful trials demonstrating beneficial microalgal point bottlenecks constraints regarding input

Language: Английский

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Biostimulants: A sufficiently effective tool for sustainable agriculture in the era of climate change?

Plant Physiology and Biochemistry, Journal Year: 2024, Volume and Issue: 211, P. 108699 - 108699

Published: May 9, 2024

Language: Английский

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Biostimulants: The Futuristic Sustainable Approach for Alleviating Crop Productivity and Abiotic Stress Tolerance

Journal of Plant Growth Regulation, Journal Year: 2023, Volume and Issue: 43(3), P. 659 - 674

Published: Oct. 24, 2023

Language: Английский

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Microalgae and cyanobacteria polysaccharides: Important link for nutrient recycling and revalorization of agro-industrial wastewater

Applied Food Research, Journal Year: 2023, Volume and Issue: 3(1), P. 100296 - 100296

Published: April 10, 2023

Despite the high amount of wastewater generated by agroindustry around world, only a limited number alternatives for its reuse or revalorization have been applied. One most suitable agro-industrial is production extracellular polysaccharides (EPS) from microalgae and cyanobacteria. Due to complex carbohydrate metabolic pathway in cyanobacteria, EPS produced can be employed residual water treatment, emulsification, gelling, as prebiotic ingredient, among others. biological activities, including antioxidant, anti-inflammatory, antitumor, antimicrobial related their molecular weight, sulfate, uronic acid, charged group content. In this review, cyanobacteria production, functional properties, sustainable are addressed. Microalgal polysaccharide wastewaters has potential become standard transforming linear food processing systems into circular economy alternatives.

Language: Английский

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Enhancing sustainability through microalgae cultivation in urban wastewater for biostimulant production and nutrient recovery

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 904, P. 166878 - 166878

Published: Sept. 9, 2023

Microalgae can produce biostimulants in form of phytohormones, which are compounds that, even if applied low concentrations, have stimulant effects on plants growth and enhance their quality resistance to stress. Considering that microalgal biomass grow recovering nutrients from wastewater, this circular approach allows use residues for the production high added value (such as phytohormones) at cost. The interest microalgae recently raised. Scientists focused direct application these cellular extracts plants, while number studies identification bioactive molecules, such is very scarce. Two cyanobacteria strains (Synechocystis sp. (SY) Phormidium (PH)) a chlorophyte (Scenedesmus (SC)) were cultured laboratory-scale PBRs with working volume 2.5 L secondary urban wastewater varying N:P ratio cultures obtain highest productivity. variation affects growth, SY PH presented higher productivities (73 48 mg L-1 d, respectively) under (> 22:1). Microalgal was freeze-dried phytohormones content measured ultra-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS). three showed similar profiles, being auxin (indole-3-acetic acid, IAA) most abundant (72 ng g-1DW SY). Proteins major macronutrient all strains, reaching %DW culture. To optimize production, balance between compounds, productivity removal should be taken into consideration. In sense, SC promising strain, showing N P rates % 59 %, producing phytohormones.

Language: Английский

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Using microalgae to reduce the use of conventional fertilizers in hydroponics and soil-based cultivation

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 912, P. 169424 - 169424

Published: Dec. 19, 2023

The intensive use of agrochemicals has led to nutrient loss, greenhouse gas emissions, and resource depletion, thus the development sustainable agricultural solutions is required. Microalgal biomass potential provide nutrients such as nitrogen, phosphorus, potassium, along with various plant growth promoters, enhance crop productivity impart disease resistance. This study provides a comprehensive assessment applications microalgal extracts in contexts seed germination, hydroponic systems, soil-based cultivation. results revealed that from Chlorella sp. Anabaena have no significant impact on germination wheat seeds. High concentrations cell hydroponics enhanced length cucumber seedling stems by 81.7 % 58.3 %, respectively. Additionally, hindered root elongation while stimulating lateral fibrous roots. Furthermore, compared performance 5 different fertilizers: 1) inorganic fertilizer (IF), 2) organic (OF), 3) microalgae-based biofertilizer (MF), 4) + (IM), 5) (OM). findings indicate soil physicochemical properties groups supplied fertilizers are comparable significantly higher than those control group. levels protein, chlorophyll A, B MF group increased 40 29.2 33.5 respectively, However, it remained notably lower (p < 0.05). Combining microalgae can simultaneously yield quality Chinese cabbage, representing promising source nutrition. In conclusion, this suggests reduce conventional

Language: Английский

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Bioprospecting of microalgae from agricultural fields and developing consortia for sustainable agriculture

Algal Research, Journal Year: 2024, Volume and Issue: 78, P. 103428 - 103428

Published: Feb. 8, 2024

Language: Английский

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Integrated Nutrient Management of Fruits, Vegetables, and Crops through the Use of Biostimulants, Soilless Cultivation, and Traditional and Modern Approaches—A Mini Review

Agriculture, Journal Year: 2024, Volume and Issue: 14(8), P. 1330 - 1330

Published: Aug. 9, 2024

The increasing population, its requirements for food, and the environmental impact of excessive use inputs make crop production a pressing challenge. Integrated nutrient management (INM) has emerged as critical solution by maximizing availability utilization crops vegetables. This review paper highlights potential benefits INM various vegetables field explores conceptual strategies, components, principles underlying this approach. Studies have shown that wide range benefit from INM, in terms increased yield improvements attributes, contents uptake, growth parameters, physiological biochemical characteristics. discusses biostimulants, their categories, on plant propagation, growth, photosynthesis, seed germination, fruit set, quality. Additionally, modern sustainable soilless techniques such hydroponics, aeroponics, aquaponics. These cultivation methods highlight advancements controlled-environment agriculture (CEA) contribution to management, food security minimizing footprint. concludes proposing fostering discussions INM’s future development, while acknowledging challenges associated with adoption. Finally, emphasizes substantial evidence supporting novel ecologically sound strategy achieving agricultural worldwide.

Language: Английский

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An insight into heat stress response and adaptive mechanism in cotton

Journal of Plant Physiology, Journal Year: 2024, Volume and Issue: 302, P. 154324 - 154324

Published: Aug. 6, 2024

Language: Английский

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