scholarly journals Micropropagation of carnation ( Dianthus caryophyllus L . ) in liquid medium by temporary immersion bioreactor in comparison with solid culture

2017 ◽  
Vol 15 (2) ◽  
pp. 309-315 ◽  
Author(s):  
Marzieh Ahmadian ◽  
Alireza Babaei ◽  
Saber Shokri ◽  
Shahriar Hessami
2019 ◽  
Vol 41 (1) ◽  
Author(s):  
Samila Silva Camargo ◽  
Leo Rufato ◽  
Maicon Magro ◽  
André Luiz Kulkamp de Souza

Abstract The in vitro propagation technique via temporary immersion bioreactors is a tool that, through the culture in a liquid medium, allows an increase in the efficiency of seedling production. Several researches with the strawberry crop have shown greater efficiency of the system compared to the conventional process of micropropagation in solid medium. In this sense, the objective herein was to establish a protocol of multiplication and rooting of the ‘Pircinque’ strawberry, in temporary immersion bioreactors. Two distinct and independent studies were carried out, characterized by the multiplication and rooting stages of strawberry explants, newly introduced and registered in Brazil. Two culture media (MS and KNOP) were studied and, as a control treatment, the growth of the explants in solid culture medium was evaluated with the addition of 5 g L-1 of agar. Different immersion times of the culture medium were explored: five or eight times a day, for 15 minutes. The study was composed of the culture medium and immersion time factors, as well as the control (solid) treatment. It was verified that the use of temporary immersion bioreactors system is an efficient technique for the multiplication and rooting of explants of strawberry cv. Pircinque, when compared to the conventional method of micropropagation with the use of solid culture medium, making it possible to optimize the production of seedlings in biofactories. The MS liquid medium, in contact with explants of ‘Pircinque’ strawberry five times a day, increased the growth of the aerial part and the root system.


2021 ◽  
Author(s):  
Mariusz Pożoga ◽  
Dawid Olewnicki ◽  
Elżbieta Wójcik-Gront

Abstract The aim of this study was to propose an efficient method of Pennisetum x advena ‘Rubrum’ micropropagation. Agar cultures with MS medium supplemented with BAP in various concentrations (0.5 mg/L-2 mg/L) and a temporary immersion bioreactor system (TIS) with liquid medium MS with an addition of 1 mg/L BAP were used. For rooting ½ MS medium with different auxin combinations (IBA, NAA) and activated charcoal was utilized. The most efficient method turned out to be TIS which produced 36.9 new plants in four weeks. The seedlings were slender in shape, bright green in colour with no signs of hyperhydricity. The most suitable agar medium produced 19.5 new plants in an eight week period. Rooting should be carried on ½ MS supplemented with 0.5 mg/L IBA and 0.5 mg/L NAA with an 84% rooting rate. The addition of activated charcoal inhibited rooting.


Author(s):  
Melike Cengiz ◽  
Yıldız Aka Kaçar

In this study, micropropagation and rooting of ‘Tuzcu 31-31 sour orange’ and ‘C-35 citrange’ citrus rootstocks were conducted by comparing with Plantform temporary immersion bioreactor system and traditional solid culture. Murashige and Skoog Medium (MS) and Woody Plant Medium (WPM) supplemented with 6-Benzylaminopurine (BAP) (0, 1.0, 2.0 mg L-1), Kinetin (KIN) (0, 0.5, 1.0 mg L-1) and 2-Isopentenyl adenine (2IP) (0, 1.0, 2.0 mg L-1) were used in solid culture experiments. For solid culture rooting experiments, MS, ½ MS and WPM media supplemented with different concentrations of 1-Naphthaleneacetic acid (NAA) (0, 0.5, 1.0, 2.0 mg L-1) and Indole-3-butyric acid (IBA) (0, 0.5, 1.0, 2.0 mg L-1) were used. In both genotypes, the best micropropagation and rooting results were obtained from MS medium containing 2.0 mg L-1 BAP and ½ MS nutrient medium containing 0.5 mg L-1 NAA, respectively. Plantform bioreactor system was studied with the best medium content determined for micropropagation and rooting. As a result of the study, Plantform system gave better results in terms of plant quality in the micropropagation medium for both genotypes. Plantform system in rooting medium was found to be more advantageous than solid culture medium. As a result of the screening with SSR markers, it was determined that there was no somaclonal variation in the plants micropropagated and rooted in Plantform system.


2022 ◽  
Author(s):  
Rizka Tamania Saptari ◽  
Rizkita Rachmi Esyanti ◽  
Riza Arief Putranto

Abstract Stevia (Stevia rebaudiana Bertoni) contains sweet compound widely used as natural sweetener, steviol glycoside (SG). SG is a diterpenoid secondary metabolite synthesized from ent-kaurenoic acid, the same precursor of Gibberellin (GA). Therefore, in this study, a GA inhibitor, Daminozide (0, 10, 20 ppm) was used to block ent-kaurenoic acid conversion towards GA synthesis in attempt to increase SG content of stevia propagated in Temporary Immersion Bioreactor (TIB). Daminozide in 10 mg/L was observed to be the optimum concentration which increased biomass weight and SG content (stevioside and rebaudioside A) up to 40%. The treatment also increased transcripts accumulation of genes enrolled in SG biosynthesis, such as SrKA13H, SrUGT85C2, and SrUGT76G1, indicating SG pathway become more active due to the inhibition of GA pathway. Furthermore, the inhibition of GA was also indicated by the upregulated expression of GA biosynthesis gene (GA3ox) as the result of feedback regulation, and the downregulated expression of GA catabolism gene (GA2ox2) as the result of feed-forward regulation caused by inhibitor treatment.


3 Biotech ◽  
2020 ◽  
Vol 10 (10) ◽  
Author(s):  
Denys Matheus Santana Costa Souza ◽  
Maria Lopes Martins Avelar ◽  
Sérgio Bruno Fernandes ◽  
Eduardo Oliveira Silva ◽  
Vinícius Politi Duarte ◽  
...  

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