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  1. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences
  2. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84
  3. Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84, Issue 2, June 2014
  4. Geobacillus stearothermophilus (GBPI_16): A Resilient Hyperthermophile Isolated From an Autoclaved Sediment Sample
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Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 87
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 86
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 85
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84, Issue 4, December 2014
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84, Issue 3, September 2014
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84, Issue 2, June 2014
Differential Response of Plant and Soil Processes Under Climate Change: A Mini-review on Recent Understandings
Review of the Art and Science of Indian Mahseer (Game Fish) from Nineteenth to Twentieth Century: Road to Extinction or Conservation?
Erratum to: Review of the Art and Science of Indian Mahseer (Game Fish) from Nineteenth to Twentieth Century: Road to Extinction or Conservation?
Human Brain Tissue Repository: A National Facility Fostering Neuroscience Research
Early Diagnosis of Sex in Jojoba, Simmondsia chinensis (Link) Schneider by Sequence Characterized Amplified Region Marker
Aseptic Culture Establishment Using Antibiotics with Reference to Their Efficiency and Phytotoxicity in Difficult-to-Establish Native Ney Poovan Banana (Musa, AB)
Preimaginal Stages and Natural History of Two Endemic Subspecies of Polyura Billberg (Lepidoptera: Nymphalidae: Charaxinae) from the Andaman Islands
Age, Growth, Population Structure and Reproductive Potential of a Vulnerable Freshwater Mullet, Rhinomugil corsula (Hamilton, 1822) from a Tropical River Betwa in Central India
Occurrence of Macro-zoobenthos Against the Varied Altitudinal Gradient and Ecology in a Trout Stream (Lidder) of Kashmir Himalaya, India
Length–Weight Relationships and Condition Factor of Snow Trout, Schizothorax richardsonii (Gray, 1832) From Different Rivers of the Himalayan Region in India
Antioxidant Activity of Coated Probiotic Lactobacillus casei on Chromium(VI) Induced Oxidative Stress in Rats
A Study on Detection of Pathogenic Listeria monocytogenes in Ovine’s of Kashmir Region Having Abortion or History of Abortion
Studies on Tribe Gymnopleurini (Coleoptera: Scarabaeidae: Scarabaeinae) from Madhya Pradesh and Chhattisgarh with A Checklist from India
Biosynthesis of Gold Nanoparticles Using Bacteria
A Study on the Occurrence of Non-O157 Shiga Toxin Producing Escherichia coli Isolates in Retail Chicken Meats Marketed in North-East India
Extraction and characterization of peroxidase from Camellia sinensis
Geobacillus stearothermophilus (GBPI_16): A Resilient Hyperthermophile Isolated From an Autoclaved Sediment Sample
Evaluation of Anticandidal Potential of Some Folklore Plants
Determination of Phytochemical Contents of Avena sativa (oat) and Its Impact on Debaryomyces hansenii
Secretagogue Mechanism of Digestive Enzyme Secretion in the Midgut of Andrallus spinidens Fabricius (Hemiptera: Pentatomidae)
Growth, Chromium Accumulation Potential and Biochemical Changes of Vigna radiata and Zea mays Grown with Effective Microbes
Identification of Variety Diagnostic Molecular Marker of High Yielding Rice Varieties
Anti-Hyperglycemic, Anti-Hyperlipidemic and Antioxidant Potential of Alcoholic-Extract of Sida cordifolia (Areal Part) in Streptozotocin-Induced-Diabetes in Wistar-Rats
Anatomy, macro- and micromorphology of Lathyrus sect. Nissolia (Fabaceae) and their taxonomic significance
Threat Status of Medicinal Plants Used by the Tribal People in Kalakad Mundanthurai Tiger Reserve, Southern Western Ghats, India
Micromorphological and Anatomical Characteristics of the Genus Chrysophthalmum Schultz Bip. (Asteraceae) Growing in Turkey
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 84, Issue 1, March 2014
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 83
Proceedings of the National Academy of Sciences, India Section B: Biological Sciences : Volume 82

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Geobacillus stearothermophilus (GBPI_16): A Resilient Hyperthermophile Isolated From an Autoclaved Sediment Sample

Content Provider SpringerLink
Author Dhakar, Kusum Kumar, Bhavesh Palni, Lok Man S. Pandey, Anita Sati, Priyanka Sharma, Avinash
Copyright Year 2013
Abstract A hyperthermophilic bacterium has been isolated from autoclaved sediments which were originally collected from a hot spring site (Soldhar) located in Tapovan area in District Chamoli of Indian Himalayan Region. The bacterium exhibited growth between 55 and 95 °C under laboratory conditions. The growth curves, drawn at different temperatures (55, 65, 75, 85 and 95 °C), showed clear preference for high temperature for production of cell biomass. Broth culture of the bacterium after exposure to boiling temperature, exhibited increase in the colony forming units up to 20 min. Microscopic observations showed Gram +ve cells arranged in clusters or short to long chains bearing endospore with swollen solitary sporangia at terminal positions, and developed coiling at a later stage after subcultures. The bacterium survived second round of autoclaving but with deteriorated cell arrangement. Following polyphasic approach, the bacterium was identified as Geobacillus stearothermophilus. In lipase producing medium, the bacterium exhibited maximum cell biomass at 65 °C, coinciding with maximum lipase activity (25.8 U/L) after 14 h of incubation. Relatively high amylase activity was recorded; maximum (47.2 U/L) at 95 °C after 8 h of incubation, not showing correlation with cell biomass which attained maximum value after 16 h. Distinct peaks of amylase activity were recorded twice at all the 4 temperatures, first on or before 8 h and the second after 14 h of incubation. Elasticity in morphological structures and the production of thermostable enzymes at elevated temperatures are likely to play important role in conferring resilience to bacterium for survival and multiplication under high temperatures. The bacterium and its 16S rDNA sequence have been assigned accession numbers MTCC11501 and MCC2050, and FJ548759, respectively.
Starting Page 349
Ending Page 356
Page Count 8
File Format PDF
ISSN 03698211
Journal Proceedings of the National Academy of Sciences, India Section B: Biological Sciences
Volume Number 84
Issue Number 2
e-ISSN 22501746
Language English
Publisher Springer India
Publisher Date 2013-07-20
Publisher Place India
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword Hot spring Life Sciences Indian Himalayan Region (IHR) Hyperthermophile Geobacillus stearothermophilus Plant Biochemistry Nucleic Acid Chemistry Behavioural Sciences Ecological resilience
Content Type Text
Resource Type Article
Subject Environmental Science Agricultural and Biological Sciences
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