Biotechnology
Fereshteh Heidargholinezhad; Y. Hamidoghli; V. Ghasemiomran; P. Biparva
Abstract
Centella asiatica (L.) Urban, a medicinal plant from Apiaceae family, is known as an endangered species in Iran. This plant has many therapeutic properties, including memory enhancement, anticancer, and treating skin diseases and has also high antioxidant activities. Plant cell and tissue ...
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Centella asiatica (L.) Urban, a medicinal plant from Apiaceae family, is known as an endangered species in Iran. This plant has many therapeutic properties, including memory enhancement, anticancer, and treating skin diseases and has also high antioxidant activities. Plant cell and tissue culture is an important tool in basic studies and has commercial applications. Tissue culture method can be used to breed medicinal plants or change the amount of secondary metabolites. Due to the high value of C. asiatica, in vitro cultivation can be used to produce more of this plant. Optimizing tissue culture is useful for conducting the applied researches and metabolic engineering of different secondary metabolites biosynthetic pathways. The present study was aimed at achieving a suitable protocol for in vitro propagation and determining the appropriate concentrations of growth regulators for micropropagation of this valuable species. The interaction of BAP (0, 1, 2, and 3 mg.l-1) and IBA (0, 0.5, and 1 mg.l-1) was investigated on proliferation of nodal explants in MS medium. Then, rooting of the propagated explants was evaluated using IBA and NAA. The results showed that MS with 2 mg.l-1 BAP and 1 mg.l-1 IBA and MS with 1 mg.l-1 IBA were the best media for proliferation and rooting, respectively.
Biotechnology
M. Ahmadi-Roshan; G. Karimzadeh; S. Rashidi monfared
Abstract
Satureja bachtiarica Bunge is one of the endemic Satureja species in Iran, which has strong antioxidant and antimicrobial properties as well as economic and medicinal vlaue due to the presence of compounds like carvacrol and thymol in the essential oil and rosmarinic acid and other phenolic acids in ...
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Satureja bachtiarica Bunge is one of the endemic Satureja species in Iran, which has strong antioxidant and antimicrobial properties as well as economic and medicinal vlaue due to the presence of compounds like carvacrol and thymol in the essential oil and rosmarinic acid and other phenolic acids in the extract. In this study, 10 shooting and 8 rooting treatments were used in MS medium to produce clones of this species using micropropagation method. The shooting treatments were a combination of cytokinins (Kin, 2ip, and TDZ) and auxins (IBA and BA) with different concentrations. The rooting treatments were also a combination of different concentrations of auxins (IBA and NAA). The best shooting treatment [IBA (0.01 mg l-1), TDZ (0.05 mg l-1), and 2ip (0.3 mg l-1)] was recognized by examining traits such as number and length of main and secondary shoots, number of leaves, number of lateral active buds, and leaf colour. Number of main and lateral roots were also criteria for the best rooting treatment [IBA (0.5 mg l-1) and NAA (0.5 mg l-1)] selection. Since S. bachtiarica is an allogamous plant and has a high diversity for different traits like metabolites, practical purpose of the present study was mass production of identical individuals for use in breeding programs. This purpose was done by presenting the micropropagation protocol of this valuable plant.
Biotechnology
Z. Abravesh; H. Zare; M. Khoshnevis
Abstract
Sorbus persica Hedl. is an Iranian endemic slow-growing tree (fam. rosaceae) and is endangered. It is important in terms of the gene storage, environmental protection, and medicinal uses. To in vitro propagate this species by the lateral bud culture, a factorial experiment was conducted in a completely ...
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Sorbus persica Hedl. is an Iranian endemic slow-growing tree (fam. rosaceae) and is endangered. It is important in terms of the gene storage, environmental protection, and medicinal uses. To in vitro propagate this species by the lateral bud culture, a factorial experiment was conducted in a completely randomized design in three levels of culture medium and three levels of cytokinin with three replications. For shooting, the DKW, WPM, and MS culture media containing the cytokinins BAP, Kin, and 2ip, and for rooting, the complete and modified DKW, WPM, and MS culture media containing the auxins NAA and IBA separately and in a consecutive application were investigated. The results showed that the best sterilization treatment was a consecutive application of sodium hypochlorite 20% (v/v, 15 min) and mercuric chloride 0.1% (3 min) in summer. The best proliferation and longitudinal growth of shoots was observed in the MS medium containing IBA (0.01 mg l-1), Kin (0.25 mg l-1), and BAP (3 mg l-1) growth regulators. Also, the best rooting was obtained in the DKW medium with a quarter of the concentration of macroelements containing the NAA+IBA hormones (0.3+0.3 mg l-1).
M. Movahedi; V. Ghasemiomran; S. Torabi
Abstract
The present study was carried out to investigate the possibility of micro-propagation and to determine the optimal medium composition and combination of Cannabis sativa L. growth regulators under in vitro conditions. Seeds were surface-sterilized and then cultured on MS basal medium. One month later, ...
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The present study was carried out to investigate the possibility of micro-propagation and to determine the optimal medium composition and combination of Cannabis sativa L. growth regulators under in vitro conditions. Seeds were surface-sterilized and then cultured on MS basal medium. One month later, leaf and hypocotyl explants, obtained from the seedlings grown at in vitro condition, were used in MS culture medium containing NAA hormone (0.5, 1, 2 and 3 mg/l) either alone or in combination with 0.5mg/l BA; and 2,4-D (0.1, 0.2, 0.5 and 1 mg/l) alone or in combination with 0.5mg/l BA. Callus formation was the response of explants in most media. Direct shoot regeneration from explants was not observed but shoot induction from callus was seen only in 0.1 mg/L 2,4-D+ 0.5 mg/L BA. The highest volume of induced callus was formed on MS medium 0.1 mg/L 2,4-D+ 0.5 mg/L BA using leaf as explant. Root induction from some explants was observed in different treatments. The highest fresh weight of calli belonged to the leaf explant cultured on MS medium containing 1 mg/L 2,4-D+ 0.5 mg/L BA. Callus induction and rooting occurred easily and the explants did not respond well to regeneration.
N. Iranpak; S. Kalateh Jari; S. Kalantari
Abstract
Narcissus tazetta L., belonging to Amaryllidacea, is an endemic species to Iran. Beautiful flowers of this plant in autumn and winter, in addition to the ornamental value, have high medicinal value due to the aromatic properties and essential oil production. Thus, the rapid proliferation and production ...
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Narcissus tazetta L., belonging to Amaryllidacea, is an endemic species to Iran. Beautiful flowers of this plant in autumn and winter, in addition to the ornamental value, have high medicinal value due to the aromatic properties and essential oil production. Thus, the rapid proliferation and production of many plants of the mentioned species in a short time is considered. Conventional propagation relies upon bulb division method which is a costfull & time consuming method. In vitro micropropagation of Narcissus tazetta is of utmost importance in callus induction and extraction medicinal compounds from callus and production of complete plantlets for ornamental and medicinal uses. In this research, the possibility of callus induction from different explants of Narcissus tazetta and possibility of plant propagation using bulb explants were investigated. The effects of BA with NAA or 2.4-D at different concentrations in MS medium were evaluated for callus induction of Narcissus tazetta through twin scale or leaf plate explants. Adventitious shoots were induced on twin- scale explants taken from the basal plate region of bulbs on MS medium containing BA with IBA or NAA. All media were supplemented with 30 gl־¹ Sucrose & 8 gl־¹ Agar. For callus induction, cultures were maintained in dark at 25 ºc and for shoot formation 16 h light and 8 h dark at 25ºc were used. Based on the results, 35% of twin- scale explants produced callus with the average of 8 mm diameter. Callus was not produced in leaf scale explants. The highest number of shoots (2) with elongated stems (5 mm lenght) were obtained in twin- scales cultured in MS medium with 2 mgl־¹ BA + 1 mgl־¹ IBA. In this treatment, regeneration rate of the explants was 50%.
S. Akef; F. Bernard; H. Shaker; A.R. Ghasempoor
Abstract
In order to micropropagate and for acclimatization of Feverfew (Tanacetum parthenium), seeds were cultured on MS/4 medium with the whole vitamins, and shoot explants of seedlings, with shoot tip and without shoot tip, were cultured on MS medium supplemented with NAA (0.54µM) and BAP (4.44µM). ...
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In order to micropropagate and for acclimatization of Feverfew (Tanacetum parthenium), seeds were cultured on MS/4 medium with the whole vitamins, and shoot explants of seedlings, with shoot tip and without shoot tip, were cultured on MS medium supplemented with NAA (0.54µM) and BAP (4.44µM). 100% of explants with shoot tip and only 44% of explants without shoot tip produced plantlet. The number of plantlets produced, was more in shoot tip explants. For acclimatization, plantlets were rinsed with water for one hour. Roots were cut, and transferred to plastic pots containing Pit: Vermiculite (1:1). Plantlets were capable of acclimatization in ex vitro conditions and 62.5% of them remained alive.
