Depolymerised carrageenan enhances physiological activities and menthol production in Mentha arvensis L.

Regulation of functional activities and essential oil production in Vetiveria zizanioides L. Nash after γ-irradiated sodium alginate elicitation

“…The GPC profile helps in unraveling the gamma radiation-mediated depolymerization of polysaccharides as a result of chain scission of the complex natural polysaccharide. Followed by gamma irradiation of sodium alginate, the distribution curve showed elution of varying molecular-weight fractions against time (Idrees et al, 2012). GPC analysis revealed a shift in the graph towards higher retention time, which depicted the decrease in the molecular weight of sodium alginate brought about by its degradation upon gamma irradiation.…”

“…Additionally, these oligomers (oligosaccharides) are claimed to reduce the harvest period of different crops, thus curbing the exploitation of chemical fertilizers and insecticides (Darvill et al, 1992;Nagasawa et al, 2000;Ahni et al, 2001;Cabalfin, 2002;Kume et al, 2002;Hafiz et al, 2003;Lee et al, 2003;Luan et al, 2003;Sabharwal, 2004;Hu et al, 2004;El-Mohdy, 2012). Furthermore, irradiated sodium alginate (ISA) is well known for its agricultural use, the verification of which comes from studies claiming that foliar application of ISA results in the amelioration of active constituents in various medicinal and aromatic plants (MAPs) (Naeem et al, , 2012Idrees et al, 2012;Aftab et al, 2014;.…”

Preparation and anatomical distribution study of 67Ga-alginic acid nanoparticles for SPECT purposes in rainbow trout (Oncorhynchus mykiss)

“…These oligomers have valid applications as antibiotic, antioxidant and plant-growth promoting substances [5,6]. There are a lot of studies on the application of these degraded polysaccharides in different fi elds, such as agriculture [5,7]. Moreover, many researchers had mainly focused on the effect of Ergosan (alginic acid) on fi sh growth, survival rate, reproductive performance, gastrointestinal morphology and innate immunity in serum and epidermal mucus [8,9].…”

Effect of Gamma Irradiated Sodium Alginate on Selective Crops as Plant Growth Promoter and Bug control action.

“…Application of ionizing radiation to degrade this natural bioactive agent and then using as growth promoting substances is an emerging technology to exploit full genetic potential of crops in terms of growth, yield, and quality [4] . Compared to the conventional techniques such as acid/base hydrolysis and enzymatic methods [5] ,radiation processing of bioactive agents by Co-60 gamma rays offers a clean one-step method for the formation of low molecular weight oligomers of SA, called oligoalginates [3].Indeed, foliar application of the degraded oligomers has been proved to stimulate various biological and physiological activities, including plant growth [1][2][3][4]6] , shoot elongation [3,7] , root growth [8] , flower production, antimicrobial activity, amelioration of heavy metal stress, synthesis of phytoalexins etc. [9][10][11][12] .…”

“…Therefore, the use of depolymerized sodium alginate (and of other marine polysaccharides) in promoting plant growth and thereby, augmenting the desired active constituents in medicinal and aromatic plants is inexpensive and safe [2,4,[13][14][15][16] . The aim of the present study was to investigate whether the foliar application of irradiated SA could be used to enhance the growth, physiological activities, yield attributes and other active constituents in selective plants.…”