Role of marine macroalgae in plant protection &amp; improvement for sustainable agriculture technology

Hamed, Seham M.; El-Rhman, Amal A. Abd; Abdel-Raouf, Neveen; Ibraheem, Ibraheem Borie Mohammad

doi:10.1016/j.bjbas.2017.08.002

Cited by 97 publications

(90 citation statements)

References 85 publications

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“…2a). Previous studies have shown that algal extracts and their purified compounds can induce strong physiological responses in plants and increase shoot and/or root weight 5,[16][17][18][19][20] . In addition, microalgae extracts such as polysaccharides have proven to enhance growth of agricultural crops 13,15,21,22 .…”

Section: Discussionmentioning

confidence: 99%

Screening of microalgae liquid extracts for their bio stimulant properties on plant growth, nutrient uptake and metabolite profile of Solanum lycopersicum L.

Mutale-joan

Benhima

Elmernissi

et al. 2020

Sci Rep

121

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The present study investigates the biostimulant effects of 18 Crude Bio-Extracts (CBEs) obtained from Microalgae and cyanobacteria on tomato plant growth, chlorophyll content, nutrient uptake and metabolite profile. Significant root and shoot length improvement (112.65%, 53.70%); was recorded at treatment with Aphanothece sp and C. ellipsoidea cBes respectively. Meanwhile, the highest root and shoot dry weight (DW) (34.81%, 58.69%) were obtained at treatment with Aphanothece sp. the latter also displayed the maximum uptake of nitrogen, phosphorus and potassium, which increased by 185.17%, 119.36% and 78.04% respectively compared with non-treated plants. Principal Component Analysis (PCA) confirmed that Phosphorus and Potassium levels in roots were closely related to enhanced Root length, whereas Nitrogen and chlorophyll b were closely related to Shoot and root DW. Additionally, Gas Chromatography-mass spectrometry (GC-MS) indicated that treatment with CBEs, induced the production of a vast array of metabolites. treated plants recorded higher accumulation of palmitic and stearic acids, which could indicate a stimulation in de novo Lipid synthesis. cBes also triggered the accumulation of pyridine-3-carboxamide (an amide active form of vitamin B3) and Linolenic acid; one of the key precursors in the biosynthetic pathway leading to plant jasmonates. Our results are a first step towards understanding the effects of microalgal extracts on plant physiology and biochemical pathways. further investigations on biochemical fractionation of microalgal extracts and agronomic tests of their purified bioactive compounds could be a useful principal novelty for indepth study of CBE action mechanisms. Other useful tools include; Comparative hormone profiling of treated and non-treated plants accompanied with combined High-throughput plant phenotyping, transcriptomics and metabolomics analysis.www.nature.com/scientificreports www.nature.com/scientificreports/ efficiency 6 . Thus, the use of plant biostimulants is a sustainable alternative strategy to improve crop yield and avert environmental pollution. A plant biostimulant is not a "fertilizer" in the true sense because it's function and role in plant growth is independent of its nutrient content 7 , but it's a material composed of substance(s) and/or microorganisms that stimulate natural processes in plants, leading to enhanced plant growth, nutrient use efficiency, tolerance against abiotic stresses and/or crop quality (European Biostimulant Industry Council EBIC, 2016) 5 . also defined plant biostimulants as; "a formulated product of biological origin that improves plant productivity as a consequence of the novel, or emergent properties of the complex of constituents, and not as a sole consequence of the presence of known essential plant nutrients, plant growth regulators, or plant protective compounds". Among the various categories, seaweeds have so far proven useful for the production of plant growth biostimulants 7-9 . However, far less attention has been focused on Mmicroal...

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Section: Discussionmentioning

confidence: 99%

Screening of microalgae liquid extracts for their bio stimulant properties on plant growth, nutrient uptake and metabolite profile of Solanum lycopersicum L.

Mutale-joan

Benhima

Elmernissi

et al. 2020

Sci Rep

121

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“…The present phytochemical analyses results indicate that the three studied marine algae have considerable amounts of proline, total carbohydrates, and phytohormones, but with significantly different amounts. Marine macroalgae are considered valuable resources for plant improvement due to their high content of polysaccharides, glycerol, and plant growth regulators, including auxins, cytokinins, and gibberellins, that have a broad range of biological activities [28]. Khan et al [4] indicated that the fertilizing efficiency of seaweed liquid extract was due to the existence of micro and macro nutrients, and growth hormones at preferential levels.…”

Section: Discussionmentioning

confidence: 99%

The Potentiality of Marine Macro-Algae as Bio-Fertilizers to Improve the Productivity and Salt Stress Tolerance of Canola (Brassica napus L.) Plants

et al. 2019

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The present study aimed to evaluate the potentiality of three seaweeds, which belong to different algal taxa (green alga Ulva lactuca Linnaeus, brown alga Cystoseira spp., and red alga Gelidium crinale (Hare ex Turner) Gaillon) as bio-fertilizers to improve the growth and yield of canola (Brassica napus L.) plants under greenhouse conditions. Furthermore, the impact of seaweeds in alleviating the effects of salt stress (75 and 150 mM NaCl) on canola plants was also investigated. The three examined seaweeds (applied as soil amendments) successfully alleviated the harmful effects of salinity on canola plants by significantly reducing the inhibition of chlorophyll a, b, total carbohydrate accumulation, and growth promoting hormones, while increasing antioxidative compounds, such as phenols, flavonoids, anthocyanin, and osmoprotectants, including total carbohydrates and proline. Phytochemical analysis of the three examined seaweeds suggests that their stimulatory effect on growth and productivity under normal and salinity growth conditions may be linked to their constituents of a wide variety of growth promotive hormones, including indole acetic acid, indole butyric acid, gibberellic acid, cytokinins, total carbohydrates, and phenolic compounds. U. lactuca was found to be the best candidate to be used as a bio-fertilizer to improve canola growth, yield, and salt stress tolerance.

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“…They have a high growth rate during the cultivation in sea water. Depending on the pigment they contain, macroalgae are classified as red algae (Rhodophyta), green algae (Chlorophyta), and brown algae (Phaeophyta) [23] Among the marine seaweeds, around 1500-2000 species of marine brown algae are available and most of the brown algal species are subjected to research purposes due to their commercial significance in drug leads and nutraceuticals. In particular, most important secondary bioactive metabolites such as phlorotannins, fucosterols, fucoidans, alginic acids, fucoxanthin, and phycocolloids have been extensively found in brown algae, which exhibit significant biological properties including antidiabetic, anti-inflammatory, cytotoxic, and antioxidant activities [24].…”

Section: Bioactive Compounds Present In Marine Brown Algaementioning

confidence: 99%

“…Fucoidan has been reported to exhibit antioxidant, antidiabetic, and anti-inflammatory activities, whereas laminarans play a role as prebiotics and dietary fibers in addition to their antibacterial and antitumor activities. Alginic acids are mostly used in the pharmaceutical industries due to the ability to chelate the metal ions [23]. Moreover, fucosterols are the predominant sterol present in brown algae also exhibit biological properties [13].…”

Section: Bioactive Compounds Present In Marine Brown Algaementioning

confidence: 99%

Antidiabetic Potential of Marine Brown Algae—a Mini Review

Gunathilaka

Samarakoon²,

Ranasinghe

et al. 2020

Journal of Diabetes Research

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Marine algae are an important source of bioactive metabolites in drug development and nutraceuticals. Diabetes mellitus is a metabolic disorder and the third leading cause of death worldwide due to lifestyle changes associated with rapid urbanization. Due to the adverse side effects of currently available antidiabetic drugs, search for an effective natural-based antidiabetic drug is important to combat diabetes and its complications. Therefore, in lieu with herbal drug development, it is important to find the potential benefits of seaweeds for the management of type 2 diabetes as they are underexplored yet in Sri Lanka. Among the marine seaweeds, natural bioactive compounds are abundant in brown algae with potentials in application as active ingredients in drug leads and nutraceuticals. Bioactive secondary metabolites are derived from numerous biosynthetic pathways of marine algae which contribute to various chemical and biological properties. Phlorotannins present in marine brown algae exhibited antidiabetic activities through different mechanisms such as the inhibitory effect of enzyme targets mainly by inhibiting the enzymes such as α-amylase, α-glucosidase, angiotensin-converting enzymes (ACE), aldose reductase, dipeptidyl peptidase-4, and protein tyrosine phosphatase 1B (PTP 1B) enzyme. In addition, phlorotannins derived from brown algae have the ability to reduce diabetic complications. Hence, the present review focuses on the different antidiabetic mechanisms of secondary bioactive compounds present in marine brown algae.

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Role of marine macroalgae in plant protection & improvement for sustainable agriculture technology

Cited by 97 publications

References 85 publications

Screening of microalgae liquid extracts for their bio stimulant properties on plant growth, nutrient uptake and metabolite profile of Solanum lycopersicum L.

Screening of microalgae liquid extracts for their bio stimulant properties on plant growth, nutrient uptake and metabolite profile of Solanum lycopersicum L.

The Potentiality of Marine Macro-Algae as Bio-Fertilizers to Improve the Productivity and Salt Stress Tolerance of Canola (Brassica napus L.) Plants

Antidiabetic Potential of Marine Brown Algae—a Mini Review

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