S.K. Singh

Jai Prakash Vishwavidyalaya

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Nawal Kishore Dubey

Banaras Hindu University

Sheo Mohan Prasad

University of Allahabad

Bikash Sarkar

ICAR Research Complex for NEH Region

K. C. Pani

Central Institute of Freshwater Aquaculture

N. Kishore

GITAM University

Pratibha Singh

All India Institute of Medical Sciences Jodhpur

B. C. Mohapatra

Navsari Agricultural University

D. Majhi

Central Institute of Freshwater Aquaculture

Anupam Dikshit

University of Allahabad

Viney Kumar

Institute of Microbial Technology

Cooperative Institutions

Central Institute of Freshwater Aquaculture

Indian Council of Agricultural Research

University of Allahabad

Banaras Hindu University

Indian Agricultural Research Institute

Deen Dayal Upadhyaya Gorakhpur University

Central Marine Fisheries Research Institute

Indian Institute of Technology Roorkee

Academy of Scientific and Innovative Research

University of Lucknow

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Oxygen consumption of carps during live transportation

Indian Journal of Fisheries (2011)

P. K. Aravindakshan S.K. Singh Bikash Sarkar D. Majhi J. K. Jena

A study was undertaken to determine the oxygen consumption rate of live Asiatic carps during transportation in fibre reinforced plastic (FRP) tank of 1280 l capacity fitted inside a jeep trailer. Six experiments were conducted using table size fishes (425-1060 g) of Indian major carps viz., Catla catla, Labeo rohita, Cirrhinus mrigala and the exotic carps Hypophthalmichthys molitrix, Cyprinus carpio and Puntius gonionotus. Dissolved oxygen content and other water quality parameters were estimated at regular intervals during live fish transportation. The mean oxygen consumption values were found to be in the range of 15.7 - 58.2 mg fish-1 h-1 and the computed oxygen consumption rates were 19.74 - 70.58 mg kg fish-1 h-1 during transportation. Among the surface dwelling fishes, computed oxygen consumption rate was lower for silver carp (54.8 mg kg fish-1 h-1) as compared to catla (70.58 mg kg fish-1 h-1). Among the column living fishes, the oxygen consumption was lower for silver barb (50 mg kg fish-1 h-1) compared to rohu (68.9 mg kg fish-1 h-1). Common carp showed lowest value (19.74 mg kg fish-1 h-1) compared to mrigal (35.8 mg kg fish-1 h-1) among the bottom living fishes. The actual average oxygen consumption has shown clear-cut downward trends from the surface via column to bottom dwelling fishes.

Catla

Hypophthalmichthys

Common carp

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Citations (4)

Repercussion of soil pollution on plants

International Journal of Fauna and Biological Studies (2019)

Divya Gupta Abreeq Fatima S.K. Singh Pratibha Singh Sheo Mohan Prasad

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Plant Responses to Soil Pollution

Springer eBooks (2020)

Pratibha Singh S.K. Singh Sheo Mohan Prasad

10.1007/978-981-15-4964-9

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Recent advancements of ‘scytonemin’ and its potential to sustainable and green world

Acta Botanica Plantae (2023)

S.K. Singh Pratibha Singh

Ultraviolet (UV) radiation poses a significant threat to cyanobacteria by inducing cellular damage through photo-oxidation, resulting in the formation of harmful photosensitized proteins and pigments. To thrive in such harsh conditions, certain cyanobacteria have evolved to produce compounds like indole-alkaloid sunscreen and scytonemin within their extracellular sheaths. These compounds offer photoprotection and mitigate oxidative stress. Scytonemin, characterized by its hydrophobic nature and stability, acts as an antioxidant with considerable biotechnologicalaspects. The presence of a primitive array of ultraviolet-absorbing pigments in phylogenetically ancient cyanobacteria indicates an evolutionary adaptation to UV radiation. Scytonemin synthesis involves biosynthetic precursors tyrosine and tryptophan. Within a cluster of 18 genes (NpR1276 to NpR1259), genes NpR1274 to NpR1271 are pivotal in scytonemin biosynthesis. Understanding scytonemin biosynthesis at the molecular level holds promise for its application in biotechnology. This review aims to summarize scytonemin biosynthetic gene clusters, their transcriptional regulations, evolutionary significance, and biotechnological properties. By advancing our understanding, it seeks to facilitate the screening of appropriate cyanobacteria for the scytonemin synthesis forvarious applications.

10.51470/abp.2023.02.03.30

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Diversity analysis of Fusarium oxysporum f. sp. gladioli isolates using fatty acid methyl ester (FAME) profiling

Indian Journal of Horticulture (2018)

Meenu Kumari S.K. Singh Kishan Swaroop Deeba Kamil Karmjit Singh

Two geographically different isolates of Fusarium oxysporum f. sp. gladioli, namely Isolate-1 collected as infected gladiolus corms from research farm of IARI, New Delhi, and Isolate-2 from infected corms at research farm of GBPUA&T, Pantnagar, Uttarakhand were selected for the experiment. The fatty acid methyl ester profile was determined by initially converting the cellular lipids to their corresponding Fatty Acid Methyl Esters (FAMEs). Both the Fog isolates were quite distinct with respect to the fatty acids profiles and also percentage compositions of different fractions, which ranged from less than 1 to over 46% of the total identified fatty acids content. The most common and abundant fatty acids in the two Fusarium isolates were palmitic acid (C16: 0), margaric acid (C17: 0), stearic acid (C18: 0), and arachidic acid (C20: 0) as unsaturated and palmitoleic acid (C16: 1 n_7), cis-10heptadecenoic acid (C17: 1 n_8), oleic acid (C18: 1 n_9) and linoleic acid (C18: 2 n_6), which accounted for 94.45 and 98.35% of the fatty acid profiles in IARI and Pantnagar F. oxysporum f. sp. gladioli isolates, respectively suggesting that they are distinct and also differ in pathogenecity. This is the first ever attempt to characterize Fusarium oxysporum f. sp. gladioli isolates using FAME in the country.

Stearic acid

Palmitoleic acid

Corm

10.5958/0974-0112.2018.00091.9

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MODELING FOR THE ENERGY POTENTIAL OF BIOGAS POWER PLANTS IN NATIONAL CAPITAL TERRITORY

Journal of Critical Reviews (2021)

Rohit Agrawal S.K. Singh

Biogas is a renewable energy source which is being researched and widely developed as a future alternative energy source that is economical, sustainable, and environmentally friendly. Under the scheme for National Capital Territory, we used 150 cows for example where the dung from the cows is processed. Biogas production in every day which is 54 m3 or equivalent to 54,000 liters. Biogas can be used as a generating system capable of producing energy of 540 kWh each day with a power of 540 kW. The generator system in this study divided into 2 parts, namely first, a simple generator system (Digester-biogas-Genset 30000W-electricity biogas) which is assumed to operate for 24 hours a day with the energy output from this biogas power plant is 613.8 kWh per day. Generating system, the second is a generator system using HOMER (Thermal-Boiler-Generator Bio 2 kWConverter of 10 kW-electric load) with an energy output of 613.8 kWh per day. In realizing an efficient biogas - based generating system, so in this study use HOMER software to optimize generator size and value economic power plant with coverage in the form of net present cost (NPC) of Rs.2,50,000.00 and the cost of Energy (COE) of Rs. 1.57 per unit

Biogas

Energy source

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Synthesis by Decomposition of Cyclopropenyl Diazomethanes

Monocyclic Arenes, Quasiarenes, and Annulenes (2010)

S. J. Collier S.K. Singh

10.1055/sos-sd-045-00037

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Fungitoxicity of some higher plants againstRhizoctonia solani

Plant and Soil (1983)

Nawal Kishore Dubey N. Kishore O. P. Srivastava Anupam Dikshit S.K. Singh

Phytotoxicity

Damping off

Plant Physiology

10.1007/bf02185098

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Citations (18)

Antifungal properties of the volatile fraction of Melaleuca leucadendron

Tropical Agriculture (1983)

Nawal Kishore Dubey N. Kishore S.K. Singh Anupam Dikshit

Recently some higher plants and their constituents have proved successful in providing harmless fungicides because of their lesser phytotoxicity, more systemicity and easily biodegradable nature (Fawcett & Spencer 1970; Beye 1978) in contrast to some synthetic fungicides which often impose several bad side-effects. In the present project, the volatile fraction of leaves of Melaleuca leucadendron which has been reported to contain antifungal activity (Chaurasia & Vyas 1977), was evaluated for its activity against Rhizoctonia solani which causes severe damping-off of seedlings of some agricultural crops.

Myrtaceae

Phytotoxicity

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Common Carp, <i>Cyprinus carpio</i> (L.) Seed Rearing in Polyhouse Pond Environment During Low Temperature Periods

JOURNAL OF AQUACULTURE (2002)

B. C. Mohapatra S.K. Singh Bikash Sarkar D. Majhi C. Maharathi

Common carp, Cyprinus carpio (L.) spawn was reared in polyhouse and control (Open) nursery ponds environment during January-February, 2002. The ponds were prepared as per the recommended practices. Spawn was stocked @ 5 million/ha in all the experimental ponds. The supplementary feed (rice bran, groundnut oilcake and wheat flour in the ratio of 1:1:1) was given @ 4, 6 and 8 times of initial body weight of spawn during 1st, 2nd and 3rd weeks, respectively. The biotic and abiotic variables were monitored at regular intervals. The temperature in the polyhouse nursery was recorded to be 4-6°C higher than open nursery. After 20 days of rearing in control and polyhouse ponds, mean growth and survival of fry were 19.7 mm/0.139 g (40.2%) and 21.95 mm/0.202 g (61.5%), respectively. The planktonic density was higher in polyhouse ponds than those of control ponds. The observation revealed that the growth and survival of fish seed were remarkably higher in polyhouse ponds than the open ones in cooler period of the year.

Spawn (biology)

Common carp

10.61885/joa.v10.2002.23

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Citations (3)