In vitro induction of vegetative buds in tobacco callus by chelating agents

1971 ◽  
Vol 49 (3) ◽  
pp. 391-394 ◽  
Author(s):  
T. S. Kochhar ◽  
P. R. Bhalla ◽  
P. S. Sabharwal
Keyword(s):  
Citric Acid ◽  
Tartaric Acid ◽  
Chelating Agents ◽  
Tobacco Callus ◽  
Iron Salt ◽  
Nutrient Media ◽  
Vegetative Buds ◽  
Hydroxyphenylacetic Acid ◽  
In Vitro Induction

Calli obtained from haploid and diploid plants of Nicotiana tabacum were inoculated on nutrient media supplemented with various concentrations of chelating agents: iron salt of ethylenediamine-di-o-hydroxyphenylacetic acid (Fe-EDDHA), 1,3-diamino-2-hydroxypropane-N,N,N′,N′-tetraacetic acid (DHPTA), 1,2-cyclohexanediaminetetraacetic acid (CYDA), citric acid, and tartaric acid. No auxin or cytokinin was added to the medium. Vegetative buds differentiated on the callus obtained from the haploid plants. However, these chelating agents proved ineffective in inducing differentiation on the callus derived from diploid plants. Morphogenetically, Fe-EDDHA and DHPTA proved more potent than CYDA, citric acid, and tartaric acid.

In-vitro induction of vegetative buds by benz(a)anthracene in tobacco callus

Planta ◽  
1970 ◽  
Vol 94 (3) ◽  
pp. 246-249 ◽  
Author(s):  
T. S. Kochhar ◽  
P. R. Bhalla ◽  
P. S. Sabharwal
Keyword(s):  
Tobacco Callus ◽  
Vegetative Buds ◽  
In Vitro Induction

In vitro induction of vegetative buds by tobacco smoke condensate

1971 ◽  
Vol 27 (5) ◽  
pp. 591-592 ◽  
Author(s):  
T. S. Kochhar ◽  
P. R. Bhalla ◽  
P. S. Sabharwal
Keyword(s):  
Tobacco Smoke ◽  
Vegetative Buds ◽  
In Vitro Induction ◽  
Tobacco Smoke Condensate

scholarly journals BX795-Organic Acid Coevaporates: Evaluation of Solid-State Characteristics, In Vitro Cytocompatibility and In Vitro Activity against HSV-1 and HSV-2

Pharmaceutics ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1920
Author(s):  
Yogesh Sutar ◽  
Tejabhiram Yadavalli ◽  
Sagar Kumar Paul ◽  
Sudipta Mallick ◽  
Raghuram Koganti ◽  
...  
Keyword(s):  
Citric Acid ◽  
Antiviral Activity ◽  
Organic Acids ◽  
Organic Acid ◽  
Tartaric Acid ◽  
Fumaric Acid ◽  
Amorphous Systems ◽  
Amorphous System ◽  
Hsv 1

BX795 is a TANK binding kinase-1 inhibitor that has shown excellent therapeutic activity in murine models of genital and ocular herpes infections on topical delivery. Currently, only the BX795 free base and its hydrochloride salt are available commercially. Here, we evaluate the ability of various organic acids suitable for vaginal and/or ocular delivery to form BX795 salts/cocrystals/co-amorphous systems with the aim of facilitating pharmaceutical development of BX795. We characterized BX795-organic acid coevaporates using powder X-ray diffractometry, Fourier-transform infrared spectroscopy (FT-IR), Raman spectroscopy, 1H-nuclear magnetic resonance spectroscopy, thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) to elucidate the interaction between BX795 and various organic acids such as taurine, maleic acid, fumaric acid, tartaric acid, and citric acid. Furthermore, using human corneal epithelial cells and HeLa cells, we evaluated BX795-organic acid coevaporates for in vitro cytocompatibility and in vitro antiviral activity against herpes simplex virus-type 1 (HSV-1) and type-2 (HSV-2). Our studies indicate that BX795 forms co-amorphous systems with tartaric acid and citric acid. Interestingly, the association of organic acids with BX795 improved its thermal stability. Our in vitro cytocompatibility and in vitro antiviral studies to screen suitable BX795-organic acid coevaporates for further development show that all BX795-organic acid systems, at a concentration equivalent to 10 µM BX795, retained antiviral activity against HSV-1 and HSV-2 but showed differential cytocompatibility. Further, dose-dependent in vitro cytocompatibility and antiviral activity studies on the BX795-fumaric acid system, BX795-tartaric acid co-amorphous system, and BX795-citric acid co-amorphous system show similar antiviral activity against HSV-1 and HSV-2 compared to BX795, whereas only the BX795-citric acid co-amorphous system showed higher in vitro cytocompatibility compared to BX795.

scholarly journals Evaluation of Antimicrobial Activity of Four Organic Acids Used in Chicks Feed to ControlSalmonella typhimurium: Suggestion of Amendment in the Search Standard

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Aicha El Baaboua ◽  
Mohamed El Maadoudi ◽  
Abdelhakim Bouyahya ◽  
Omar Belmehdi ◽  
Ayoub Kounnoun ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Lactic Acid ◽  
Citric Acid ◽  
Organic Acids ◽  
Salmonella Typhimurium ◽  
Tartaric Acid ◽  
Control Program ◽  
Inhibitory Effect ◽  
Poultry Feed

Today, the general public has become increasingly aware of salmonellosis problems. Organic acids are known by their antimicrobial potential and commonly used for improving the quality of poultry feed. In this context, the present work evaluated the inhibitory effect of four organic acids, namely, acetic acid, citric acid, lactic acid, and tartaric acid, at different levels of contamination bySalmonella typhimurium. The neutralization of these organic acidsin vitroand in the presence of one-day-old chick’s organs was also investigated during the search forSalmonellaserovars in birds as described in the Moroccan standard “NM 08.0.550.” The effect of four organic acids onSalmonella typhimuriumwas testedin vitroand in the presence of chick’s organs at different concentrations set of strain and organic acids tested. The MIC results demonstrated that tartaric acid, citric acid, and acetic acid inhibitedSalmonella typhimuriumat concentrations of 0.312%, 0.625%, and 0.512% for the three levels of strain: 10, 100, and 103 CFU/ml, respectively, while lactic acid and depending on the amount of the strain introduced acts differently: 0.078% for 10 CFU/ml and 0.156% for 100 and 103 CFU/ml. The concentration of 0.04M of Na2HPO4solution has proved,in vitro, in caecums and organs of chicks (in presence of organic acids) that strain introduced, even at low concentrations, can be recovered. The use of additives has beneficial effects inSalmonellacontrol program. However, the present results recommend the amendment ofSalmonellaresearch standard, taking into account the probable presence of organic acids in digestive content of one-day-old chicks.

In Vitro Induction of Crystals of MT Protein by Vinblastine-Colcemid in Mouse Spermatids

1974 ◽  
Vol 32 ◽  
pp. 132-133
Author(s):  
John J. Wolosewick ◽  
John H. D. Bryan
Keyword(s):  
Endoplasmic Reticulum ◽  
Smooth Endoplasmic Reticulum ◽  
Nuclear Ring ◽  
Rough Er ◽  
Distal Direction ◽  
In Vitro Induction

Early in spermiogenesis the manchette is rapidly assembled in a distal direction from the nuclear-ring-densities. The association of vesicles of smooth endoplasmic reticulum (SER) and the manchette microtubules (MTS) has been reported. In the mouse, osmophilic densities at the distal ends of the manchette are the organizing centers (MTOCS), and are associated with the SER. Rapid MT assembly and the lack of rough ER suggests that there is an existing pool of MT protein. Colcemid potentiates the reaction of vinblastine with tubulin and was used in this investigation to detect this protein.

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