Seaweed Extracts as Biostimulants of Plant Growth and Development

Khan, Wazir Zada; Rayirath, Usha P.; Subramanian, Sowmyalakshmi; Jithesh, M. N.; Rayorath, Prasanth; Hodges, Æ D. Mark; Critchley, Alan T.; Craigie, J. S.; Norrie, Jeffrey; Prithiviraj, Balakrishnan

doi:10.1007/s00344-009-9103-x

Cited by 1,237 publications

(1,066 citation statements)

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“…that grow in frozen sea waters in the northern hemisphere and South Africa, respectively, have been used as raw material to produce commercial fertilizers and biostimulants for decades in several countries. An extensive list of commercial extracts obtained with these algae can be found in the literature review of Khan et al (2009). Despite of many statements of algae extracts as biostimulant and phytoprotector activity properties, the bioactive components are not known yet.…”

Section: Fucansmentioning

confidence: 99%

“…Despite of many statements of algae extracts as biostimulant and phytoprotector activity properties, the bioactive components are not known yet. Besides the phytohormones, the polysaccharides have been considered the possible responsable for their beneficial effects (Stadnik & Paulert, 2008;Khan et al, 2009). …”

Section: Fucansmentioning

confidence: 99%

“…Such applications have made feasible their rational exploitation, because they add market value to the product and use of small quantities per area (Stadnik & Paulert, 2008;Khan et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Algal polysaccharides as source of plant resistance inducers

Stadnik¹,

Freitas²

2014

Trop. plant pathol.

121

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Algal compounds exhibit great potential to enhance plant growth and resistance to abiotic and biotic stresses. This review focuses on aspects concerning the physical-chemical properties, function and biological activity of macroalgae polysaccharides. Updated results of the main poly-and oligosaccharides studied for the control of plant diseases are discussed and summarized. The carrageenans from red algae have a well-established obtaining system, but its high market value discourages its use in plant protection. The fucans found in the cell walls of brown algae are present in several fertilizers and accounted for the benefits of such commercial products on plant physiology. The laminarans, from brown algae mainly Laminaria digitata, are currently the main algal polysaccharides on the phytosanitary market. The ulvans, from cell the walls of Ulva spp., open new ways to obtain polysaccharides able to induce resistance due to its abundance worldwide. All these algal polysaccharides show ability to activate multiple plant defense mechanisms against a broad spectrum of plant pathogens. Taking into account the promising results reported in the literature and the enormous biochemical diversity of these biopolymers, it is likely that they will provide new types of resistance inducers in a near future.

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Section: Fucansmentioning

confidence: 99%

Section: Fucansmentioning

confidence: 99%

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Algal polysaccharides as source of plant resistance inducers

Stadnik¹,

Freitas²

2014

Trop. plant pathol.

121

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show abstract

“…It was reported that seaweeds can also increase nutrient uptake and plant nutritional quality. They are able to induce early flowering and fruit ripening and increase fruit production [22]. Furthermore, seaweed metabolites can suppress disease through direct action on causal agents.…”

Section: Introductionmentioning

confidence: 99%

Control of Fusarium Dry Rot Incited by Fusarium oxysporum f. sp. tuberosi Using Sargassum vulgare Aqueous and Organic Extracts

Ammar¹,

Nefzi²,

Jabnoun‐Khiareddine³

et al. 2017

J Microb Biochem Technol

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“…Seaweeds have been exploited their ability to enhance seed germination; they impart resistance to frost, fungal and insect attack and increase nutrient uptake from soil (Venkataraman 1993;Mohan 1994). Bioassays to evaluate the growth promoting effect of seaweed extracts have shown that the beneficial effect of these extracts are due to synergetic effect of plant growth-promoting substances or hormones present in seaweeds (Williams et al 1981;Tay et al 1985;Mooney and van Staden 1986;Rayorath et al 2008;Khan et al 2009;Wally et al 2013;Jannin et al 2013). Marine seaweeds are rich in potassium and contain many growth promoters such as auxins, gibberellins, cytokinins and are also used as good soil conditioners.…”

Section: Introductionmentioning

confidence: 99%