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Pandey, Avantika
- Incidence of Resistance Plasmid in Thermotolerant Bacterial Indicators Isolated from Various Sites of Ganges and Yamuna Rivers, Allahabad, U.P.
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Authors
Affiliations
1 Department of Molecular and Cellular Engineering, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
1 Department of Molecular and Cellular Engineering, Sam Higginbottom Institute of Agriculture, Technology and Sciences, Allahabad (U.P.), IN
Source
Asian Journal of Bio Science, Vol 11, No 1 (2016), Pagination: 85-90Abstract
In this study the thermotolerant bacterial indicators E.coli and Klebsiella were isolated from the water samples of rivers Ganges and Yamuna from various sampling stations. Antibiotic susceptibility revealed the MDR among most of the thermotolerant bacterial species. In case of metal tolerance the thermotolerant species were found to be highly tolerant towards most of the metals tested. The curing pattern for the resistance traits were tested and found that the curing effect was observed in thermotolerant species. The resistant traits were found to be plasmid borne and were able to transfer their resistance to the sensitive ones. Presence of plasmid DNA was also observed in resistant strains of thermotolerant species which were found to be cured. The plasmids were of small to medium size. All the strains possess only one plasmid. The study demonstrates that the resistance to antibiotic and metal ions were found to be generally associated with transmissible R-plasmid.
Keywords
Thermotolerant, Resistant Plasmid, DNA, Transfer of Resistance.
- Ultraviolet-b Radiation: A Potent Regulator Of Flavonoids Biosynthesis, Accumulation And Functions In Plants
Abstract Views :234 |
PDF Views:77
Authors
Affiliations
1 Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
1 Laboratory of Air Pollution and Global Climate Change, Department of Botany, Institute of Science, Banaras Hindu University, Varanasi 221 005, IN
Source
Current Science, Vol 119, No 2 (2020), Pagination: 176-185Abstract
Flavonoids represent a diverse group of polyphenolic secondary metabolites which are distributed amongst most of the plant species. Ultraviolet-B (UV-B) radiation is one of the important environmental regulators which governs the flavonoids biosynthesis at the transcriptional level. It is important to find out the role played by UV-B radiation in regulation of flavonoids biosynthesis and function under UV-B stress conditions in plants. This article summarizes the existing knowledge on the regulatory role of UV-B radiation on flavonoids biosynthesis and its accumulation trends in plants; further it discusses the diverse functions of flavonoids under the influence of UV-B radiation in plants.Keywords
Flavonoids, Plant Species, Potent Regulator, Reactive Oxygen Species, Ultraviolet-b Radiation.Full Text
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