Better results were observed after the use of Kelpak SL. In: University of Tasmania Research Report UT 99/1, Grape and, Winzer K, Williams P (2001) Quorum sensing and the regulation of, virulence gene expression in pathogenic bacteria. Biosorption of soil heavy metals by seaweeds decreased the bioaccumulated concentrations of metals in radish plant roots and/or translocated to its shoots compared to control. Aust J Plant Physiol 22:875–884, extract on the productivity of ‘de Nules’ clementine mandarin, Fritig B, Heitz T, Legrand M (1998) Antimicrobial proteins in, induced plant defense. Marine seaweed are a rich provenience of novel bioactive amalgam, with various applications. in mycorrhizal development in higher plants. Application of a lower concentration (20%) of SLE enhanced the percentage of seed germination, Agriculture and Agri-Food Canada, 32 Main Street. Improved nutrient uptake (N, P, K and S) was also observed with seaweed extract applications. Limited research has been conducted on the effects of. tation, Virginia Polytechnic Institute and State University, Zhang X, Ervin EH (2004) Cytokinin-containing seaweed and humic, acid extracts associated with creeping bentgrass leaf cytokinins, and drought resistance. Biostimulants have recently been used in sustainable agriculture systems to improve plant growth and resilience to biotic and abiotic stress. Now let’s see the effects of seaweed on plants, soil, and other components. The effects of the action of free radicals on membranes include the induction of lipid peroxidation and fatty acid de-esterification. J Phycol, Leclerc M, Caldwell CD, Lada RR, Norrie J (2006) Effect of plant, growth regulators on propagule formation in, Letham DS (1994) Cytokinins as phytohormones: sites of biosynthe-. Although many of the various chemical compo-. However, a number of, reports suggest that the beneficial antistress effects of, seaweed extracts may be related to cytokinin activity. Cambridge University Press, Cambridge, UK, pp 335–370, Metting B, Zimmerman WJ, Crouch IJ, van Staden J (1990), Agronomic uses of seaweed and microalgae. The, Society for Experimental Biology, Annual Meeting, The York. treatment. Suppression of fecundity of the rootknot nematode, Zhang X (1997) Influence of plant growth regulators on turfgrass, growth, antioxidant status, and drought tolerance. Seaweed components such as macro- and microel-, ). Technological advancements and introduction It is clear that the capacity and activity of the antioxidative defence system are important in limiting oxidative damage and in destroying active oxygen species that are produced in excess of those normally required for metabolism. Klarzynski O, Descamps V, Plesse B, Jean-Claude Yvin, Kloareg B, Fritig B (2003) Sulfated fucan oligosaccharides elicit defense, responses in tobacco and local and systemic resistance against, tobacco mosaic virus. • Ex. Lopes NP, Campos S, Torres MA, Souza AO, Colepicolo P. Pinto E (2007) Metabolites from algae with economical impact. The overall implications of biological stress.- 2. osmotic stress induced by salinity and drought stress; however, other roles have also been suggested (Blunden, content of plants following their treatment with seaweed, chlorophyll content may be due to a decrease in chlo, enhancement effects due to improved chlorophyll content, in leaves of various crop plants have been attributed to the, betaines present in the seaweed (Genard and others, has been indicated that betaine may work as a nitrogen, source when provided in low concentration and serve as an, osmolyte at higher concentrations (Naidu and others, Betaines have been shown to play a part in successful, formation of somatic embryos from cotyledonary tissues, and mature seeds of tea (Wachira and Ogada, As with many other eukaryotic cells, sterols are an essen-, tial group of lipids. This article provides a comprehensive review of the effect of various seaweed species and seaweed products on plant growth and development with an emphasis on the use of this renewable bioresource in sustainable agricultural systems. Plenum Press, Craigie JS (1990) Cell walls. Boller T (1995) Chemoperception of microbial signals in plant cells. Atlantic Food and Horticulture Research Centre. industrial raw materials, and in therapeutic and botanical applications for centuries. The liquid extracts obtained from seaweeds have recently gained importance as foliar sprays for many crops including various grasses, cereals flowers and vegetable species (Crouch and Staden, 1992). and 90 DAS) recorded significantly high yield (1084 kg/ha) over control (824 kg/ha) and J Appl, Crouch IJ, van Staden J (1993a) Evidence for the presence of plant, growth regulators in commercial seaweed products. In WW vines, ANEsl had no effect on leaf gas exchange, whereas ANEfl slightly improved leaf A (Fig. ably encourage flowering by initiating robust plant growth. molecular mechanism(s) of action of seaweed extracts, production due to the increasing occurrence of biotic and, abiotic stresses is likely due to climate change and will, further reduce yields and/or will have an impact on crops in, developing sustainable methods to alleviate these stresses, should be a priority. Plant Growth Regul 30:241–246, upl KM, Dirnagl U (1995) Fucoidin, a polysaccharide, ) extract on antioxidant activities and drought tolerance, o G, Bedmar EJ (2001) Detection, purification and, F, Ham KS, Hahn MG, Bergmann CW, Biswas Das (eds) (1998), nchez-Perales M, Guadiola JL (2002) Effect of a seaweed, re J, Fischer AM (1995) Venous antithrombotic and, uncinata to water stress and salinity. of the extract revealed the presence of indole compounds, Auxins have been detected in other algal species like. This article provides In: Aspinall GO (ed) The, polysaccharides. By continuing you agree to the use of cookies. Springer Science+Business Media, LLC 2009, Marine algal seaweed species are often regar-, spp. The experiment was established with three replications by standard technologies used in forest operations. Finally, they stimulate as elicitors; the defense mechanisms of plants against aggressors and stress (cold, hail, drought). and development and eliminating environmental stresses. bioresource in sustainable agricultural systems. 2ml/lit water at 60 and 90 DAS recorded significantly more yield. Moore KK (2004) Using seaweed compost to grow bedding plants. growth, yield and also to quantify the influence of foliar application of fugall on gas Seaweed extracts are used as nutrient supplements, biostimulants, or biofertilizers in agriculture and horticulture to increase plant growth and yield.

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