Browsing by Author "Sandeep Kumar Gupta"

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Alleviation of drought stress in plants through microbial interventions
(Nova Science Publishers, Inc., 2017) Richa Raghuwanshi; Shilpam Sinha; Sandeep Kumar Gupta
Drought is a serious and common threat to plant survival worldwide and in getting intensified due to global warming and decreasing water levels thereby possessing challenges on food security. The responses of plants to changing environment are complex. Physiological responses of plant towards drought adjustment include stomatal closure, increase in abscisic acid (ABA) content, accumulation of compatible solutes, increased expression of aquaporin, etc. Drought stress generates a flood of reducing power in plant that is directed towards synthesis of highly reduced compounds like isoprenoids phenol and alkaloids. Microbes too respond to water stress by reallocating resource from growth to survival which can be either osmolyte synthesis, chaperons to stabilize protein, accumulation of amino acid, production of exopolysachride (EPS) and so on. However, all adaption and acclimatization strategies are at physiological cost at the organism level which can affect ecosystem functioning at large. Plant growth promoting microbes (PGPM) are capable of modulating the physiological response of plants to water stress and overcome yield barrier. Availability of water and nutrients to plant is determined by the rhizospheric water potential which can be manifested to some extend by PGPM. PGPM may exert their effect on plant through nitrogen fixation, production of siderophores, phytohormones, exopolysaccharides, solubilization of nutrients, induction of pathogen resistance or decreasing pollutant toxicity. Plants growing in soil that naturally undergo variable dry and wet periods are less influenced by water stress.While research supports that plant growth promoting microbes can be an ecofriendly alternative to combat drought stress, a better understanding of physiological responses of microbes to stress can develop a stronger and resilient ecosystem. © 2017 by Nova Science Publishers, Inc. All rights reserved.
Biochemical and Molecular Evaluation of Rhizobium spp. and its Growth Promotion Studies with Lentil (Lens culinaris Medik. L.)
(Journal of Pure and Applied Microbiology, 2023) Umakant Banjare; Arun Kumar Patel; Ashish Kumar Pandey; Santosh Kumar; Ramesh Kumar Singh; Prahlad Masurkar; Rakesh Kumar Singh; Sandeep Kumar Gupta
Growth promoting Rhizobium spp are frequently used as biofertilizers for agricultural cropping system. Furthermore, Isolation, screening and biochemical characterization of Rhizobium for a specific plant is necessary to examine ability of isolated bacteria to affect the growth and development of host plant in various ways. The current study was aimed to isolate plant specific rhizobacterial strains which are compatible with lentil (Lens culinaris Medik.L.) plant. 20 bacterial isolates have been isolated from root nodules of lentil from various agro ecological area and their biochemical characterization was performed by different plant growth promotion activities. The result showed that, among 20 isolates, four isolates have vigorous plant growth promoting activities. Four bacterial strains were able to solubilise phosphorous along with hormone production. Moreover, among four bacterial strains, two strongly produced HCN and siderophore in vitro. Subsequently, all selected bacterial isolates were inoculated in lentil seeds of variety HUL57 to study germination percentage and vigour index of the crop. Out of four isolates 26N isolate performed best growth promotion activities on lentil seedlings. Finally, on the basis of performance of bacteria on plant, four isolates were characterized using molecular approach of species identification such as 16S rRNA sequencing. © The Author(s) 2023.
Implications and adaptive responses in Avena sativa towards rhizospheric bacteria under drought stress
(Elsevier B.V., 2024) Sandeep Kumar Gupta; Riddha Dey; Seema Devi; Richa Raghuwanshi
Water deficiency is one of the major abiotic stress conditions that decrease the yields of crops by affecting various metabolic processes in plants. The current state of food security has been alarmingly affected by these circumstances. Consequently, biological approaches to the issue can be implemented while taking into account their positive effects on the environment. The goal of the current work was to obtain rhizospheric bacterial strains possessing stress tolerance abilities, suitable to use as potent plant growth regulator under drought. For this purpose, bacterial strains were isolated from rhizospheric zone of different drought exposed plants and their putative plant growth-promoting attributes were analyzed by morphological and biochemical studies. Among the 30 isolates obtained, the best three drought tolerant and plant growth-promoting strains were selected and identified by 16S rRNA gene sequencing as Enterobacter cloacae-BHUSR1 (MG913373), Serratia marcescens-BHUSR2 (MG913374) and Klebsiella aerogenes-BHUSR3 (MG913375). These bacterial strains were good EPS, IAA, ammonia and siderophores producers as well as nutrient (K, Zn, P) solubilizers. The selected strains were used for biopriming Avena sativa seeds which were further exposed to water stress (5 days) in a completely randomized design to check the bacterial effect on plant growth. Water stress caused a significant alteration in growth, protein and chlorophyll content of Avena sativa. However, biopriming improved the physiological conditions of the oat plants by increasing the osmolytes (proline, phenol and sugar) under water deficient conditions. This technique was even helpful in augmenting the plants antioxidant levels, as high catalase activity was observed in oat after biopriming. It can be concluded from the study that bacterial seed biopriming can be a helpful tool in overcoming drought effects, as it regulates the plants physiological response towards stress with Klebsiella aerogenes-BHUSR3 being an efficient plant growth promoter in water deficient soils. © 2024 The Authors
Investigating the factors affecting the selection of grapevine top-wire method in the malekan-east azerbaijan gardens: Economic growth
(International Journal of Scientific and Technology Research, 2019) Sedigheh Asghari Baighout; Alireza Abdpour; Sandeep Kumar Gupta; Serdar Vural Uygun; Rabi Kuma
Grapes are one of the most important crops in Iran and the rest of the world. East Azerbaijan Province is one of the central provinces of grapevine production in Iran. In the province's Grape is a significant garden product in Malekan, so that the city has 65 % of the province production of the area and 7.2% of the country's grape production. Despite the advantages of the top wire method in grape production, the process of the top wire method in vineyards is prolonged. Therefore, in this research which is applied descriptive-correlation method for the study of the economic, social factors, individual and professional characteristics. © IJSTR 2019.
Multiple Domestication Centers of the Indian Pig Population
(Oxford University Press, 2025) Shailesh Desai; Prajjval Pratap Singh; Rudra Kumar Pandey; Rahul Kumar Mishra; Akhilesh Kumar Chaubey; Ajit Kumar; Sachin Kumar Tiwary; Sandeep Kumar Gupta; A. Achilli; Nicola Rambaldi Migliore; G. Chaubey
The domestication of animals is a major milestone in human history and has been studied in various fields. Pig domestication, in particular, has been widely studied, and it is believed that India is one of at least six domestication centers. However, there is a lack of systematic studies using high-resolution genetic markers, including complete mitogenomes, to investigate the domestication and genetic roots of pigs in India. In the present study, we investigated the origin and evolution of Indian pigs using mitochondrial genetic data to complement archaeological data sets. The phylogenetic status of Indian pig breeds was determined by analyzing all available mitochondrial data, incorporating a global data set of 239 mitogenomes. The Bayesian and maximum likelihood tree analyses unveiled at least eight haplogroups diverging from three main branches, two of which are geographically restricted to India. We propose that the North Indian domestic haplogroup might represent an independent in situ domestication event in North India, probably dating before ∼5,000 YBP. An additional North East Indian domestic haplogroup is nested within a widespread Asian clade that also includes Indian mitogenomes from the Andaman and Nicobar Islands that diverged more recently from distinct East and Southeast Asian roots. In conclusion, we propose that North Indian farmers could have been responsible for the independent domestication of local wild boars giving rise to the current domestic lineage identified in North India. At least one additional domestic lineage arrived in India more recently and remained mainly localized in the northeast. Domestic mitogenomes from the Indian islands show a notable connection with pig populations from Vietnam, and their arrival might be related to Austroasiatic-speaking human populations. Overall, this study provides valuable insights into the complex dynamics of pig domestication in India. © The Author(s) 2025. Published by Oxford University Press on behalf of Society for Molecular Biology and Evolution.
Stock analysis of oil drilling and exploration companies impacting india’s economic environment
(Blue Eyes Intelligence Engineering and Sciences Publication, 2019) Esha Jain; Namita Gupta; Sandeep Kumar Gupta; Hanna Davydenko
According to the Rainforest Foundation USA, Oil drilling and exploration may cause massive deforestation and dangerous poisons directly pumped into the natural environment, but the drilling and exploration simultaneously generate business activity across a spectrum of industries which may leads improvement in the economic situation. This study has been taken into consideration the top five Indian companies by their market capitalisation, which is specifically into oil drilling and exploration business. The growth of these companies has analysed by using the most famous and reliable technical indicator, Wilder’s Relative Strength Index (RSI) to explain the movement of their stock values. If RSI shows a value less than 30, it indicates that the stock or index is in the oversold territory (It's stock price indicate internal strength of Stocks), while a value higher than 70 suggests an overbought status. The result findings from the stock analysis of top five oil drilling and exploration companies are up to the mark and show the balanced growth of these organisations besides all the adverse effects of oil drilling and exploration as they are performing well by keeping in view all the suggestive measures for the benefit of India’s economic environment. © 2019, Blue Eyes Intelligence Engineering and Sciences Publication.
The performance improvement of an automatic tire air filed and air pressure display system-an analysis of sustainability development
(Science and Engineering Research Support Society, 2020) Ram Gopal; Abhisek Sharma; Sandeep Kumar Gupta; Edna Mello de Liz; Sayonara de Fátima Teston; Rabi Kumar
The current research study provides the protection and solution to a car owner when the engine startup this system automatically and checks whether the tires are puncher or not; if the tire has puncher it will maintain a constant pressure in-order to facilitate the driver and allows him reach to the destination without repairing the tire. It possesses a button that facilitates driver to send a notification to the nearest service centre constituting the complete details and current condition of the tire that it has to be repaired or needs entire change. When the driver starts driving, it measures the pressure in all 2-Tires (For 2-W), 4-tires (For four-W), 6-tires (For six-W); moreover, distributes the air, according to its speed for maximum grip. A vehicle is moving with many high-speed drivers cannot handle the car at this speed effectively which causes accidents; therefore, the experienced drivers fill their tires with air-pressure not to its full potential so that the tire remains a little inflated with more grip to the road. It results in the better handling which will pump air to the tires according to car speed in real-time. If the tire gets puncher on the way, it will glow an indicator about the condition of the tire and helps to hold the tires pressure till we reach to our destination. It also consists of help button which alerts nearest service station about the condition of the tire, if it has to be repaired or completely changed; or the driver wants to adjust the pressure of the tire manually by using the display on the car dashboard. This system uses nitrogen gas which maintains the temperature of the tire, and as it is lightweight, it increases mileage. © 2020 SERSC.