An Introduction to the Process of Cell, Tissue, and Organ Differentiation, and Production of Secondary Metabolites

Author(s):  
K. G. Ramawat
Turczaninowia ◽  
2015 ◽  
Vol 18 (4) ◽  
pp. 26-35
Author(s):  
A. Erst ◽  
◽  
T. Zheleznichenko ◽  
T. Kukushkina ◽  
T. Novikova ◽  
...  

2020 ◽  
Author(s):  
Masoumeh Fallah Ziarani ◽  
Masoud Tohidfar ◽  
Mohammah Hosein Mirjalili ◽  
Hassan Ahmadi Gavlighi ◽  
Mohsen Hesami

Abstract Plant cell, tissue and organ culture (PCTOC) is extensively used to propagate faster and more plants, to produce virus-free plants, and secondary metabolites production as well. This requires the optimization of PCTOC conditions for each plant and final aim. Optimizing the micropropagation is time-consuming and costly, because it is different from the plant and even for each variety. In addition requires the optimization of the concentration and type of hormone and the type of explants for each variety in the stages of callogenesis, embryogenesis, shooting and rooting. Hence, today researchers have used Data Mining with using an artificial neural network (ANN) to predict the best conditions for tissue culture and saved time and money considerably. In this research, radial basis function (RBF) model was used to predict the best conditions for carrot tissue culture and the results showed that the highest and the least sensitivity were related to variety and percentage of Agar in liter, respectively. The results prediction of the RBF model showed that the percentage of embryogenesis was 62.5%, but the percentage of embryogenesis in laboratory obtain 75%. The results showed that the RBF model is a good model to predict the results.


2009 ◽  
Vol 66 (5) ◽  
pp. 583-592 ◽  
Author(s):  
Flávia Mandolesi Pereira de Melo ◽  
Marli Fátima Fiore ◽  
Luiz Alberto Beraldo de Moraes ◽  
Maria Estela Silva-Stenico ◽  
Shirlei Scramin ◽  
...  

In the search for new organisms and new secondary metabolites, a study was conducted to evaluate the diversity of endophytic bacteria from ethnovarieties of cassava cultivated by Brazilian Amazon Indian tribes and also to study the secondary metabolites produced by a Bacillus pumilus strain. Sixty seven cassava endophytic bacteria were subjected to 16S rRNA sequencing and FAME analysis. The bacterial profile revealed that 25% of all endophytic isolates belonged to the genus Bacillus. The isolate B. pumilus MAIIIM4a showed a strong inhibitory activity against the fungi Rhizoctonia solani, Pythium aphanidermatum and Sclerotium rolfsii. Secondary metabolites of this strain were extracted using hexane, dichloromethane and ethyl acetate. Extracts were subjected to bioautography and LC/MS analysis, which allowed the identification of pumilacidin, an antifungal compound produced by B. pumilus MAIIIM4a. The bacterial endophytic localization was confirmed by cassava cell tissue examination using scanning electron microscopy.


2020 ◽  
Vol 11 (10) ◽  
pp. 8547-8559
Author(s):  
Hongjing Zhao ◽  
Yu Wang ◽  
Mengyao Mu ◽  
Menghao Guo ◽  
Hongxian Yu ◽  
...  

Antibiotics are used worldwide to treat diseases in humans and other animals; most of them and their secondary metabolites are discharged into the aquatic environment, posing a serious threat to human health.


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