Browsing by Author "Piyush Pandey"

Now showing 1 - 5 of 5

Efficacy of social media in influencing consumer adoption intention for tourism decisions
(Edward Elgar Publishing Ltd., 2022) Piyush Pandey
The present study analyses the effect of the characteristics and quality of social media platforms on the intention of the tourism consumers to adopt social media while making a tourism related decision. The study also examines the role of individual heterogeneity in influencing their adoption intention of social media for tourism decisions. The results reveal that the adoption intention of consumers differs significantly on the basis of gender of the respondents, age of the respondents, frequency of using social media platforms and frequency of the travel. The study also concludes that, seven characteristic features of social media viz. participation, sharing, connectivity, service quality, perceived ease of use, perceived usefulness and information effectiveness have a significantly positive impact on consumer’s intent to adopt social media for tourism decisions. © Dogan Gursoy and Rahul Pratap Singh Kaurav 2022.
Enhanced indole-3-acetic acid production by Enterobacter hormaechei APSB3 through heuristic artificial neural network and particle swarm optimisation
(Springer, 2025) Aditya Sharma; Guddu Kumar Gupta; Deepak Chhabra; Piyush Pandey; Pratyoosh Shukla
Indole-3-acetic acid (IAA) is essential in abiotic stress tolerance via signalling molecules between plants and microorganisms, contributing to sustainable agricultural practices. The present study investigates a combinatorial artificial neural network (ANN) modelling and particle swarm optimisation (PSO) algorithm to optimise the process parameters for enhanced IAA production by Enterobacter hormaechei APSB3. Hence, to improve IAA production, single-factor experiments and a design matrix generated by central composite design were employed to explore the significant input variables, including temperature, pH, carbon source, and nitrogen source, which were subsequently validated through the application of ANN-PSO. Thus, under the optimised ANN-PSO conditions, i.e. carbon source (2.11%), nitrogen source (2.37%), pH (9), and temperature (45 ℃), IAA production was improved to 94.76 ± 0.03 µg/mL (2.90-fold) as compared to un-optimised condition (33.04 ± 0.58 µg/mL). The IAA production was further confirmed by TLC and HPLC analyses, exhibiting an Rf value of 0.77 and a retention time of 3.301 min. Thus, the present work could conclude that the hybrid heuristic ANN-PSO, an empirical and decision-making tool, significantly improves efficiency and scalability for IAA production by E. hormaechei APSB3. © The Author(s) under exclusive licence to Society for Environmental Sustainability 2025.
Plant-microbiome responses under drought stress and their metabolite-mediated interactions towards enhanced crop resilience
(Elsevier B.V., 2025) Aditya Sharma; Nandita Das; Piyush Pandey; Pratyoosh Shukla
The impacts of climate change are felt worldwide; however, drought stress poses significant challenges to global agriculture, affecting crop yields and food security. Understanding the multifaceted responses of crop plants to drought, particularly through their interaction with microbiomes and metabolites, is crucial and urgent for developing resilient agricultural systems. This review highlights the detrimental effects of drought on crop plants, including reduced water use efficiency, the production of free radicals, impaired plant growth and yield, and alterations in the photosynthetic apparatus. Additionally, this review addresses the research progress on plant responses, microbiome assemblages, metabolomic responses, and interactions under drought stress. By integrating findings from metabolomics, we discuss the “call for help” signal via root exudates in crop plants and their microbiomes during drought stress. Key aspects include the reciprocal exchange of metabolites (oxaloacetic acid, flavonoids, triterpenoids, phytoalexin, coumarin, and pyruvic acid), osmoprotectants (proline, sugars, amino acids), antioxidant enzymes (peroxidase, catalase, superoxide dismutase), and phytohormones (salicylic acid, jasmonic acid, and abscisic acid), along with the activation of stress-responsive pathways. Here, we explain the forefront of deciphering plant-microbiome interactions using cutting-edge metabolomics techniques. Therefore, this review summarizes the significance of metabolic and chemical exchanges between coexisting microorganisms to combat the escalating challenges of drought conditions effectively. © 2025 The Authors
Significance of Plant Growth-Promoting Rhizobacteria in Alleviating Drought Stress in Crop Plants Under a Changing Climate for Sustainable Agricultural Production
(Springer, 2025) Aditya Sharma; Pratyoosh Shukla; Piyush Pandey
The intensification of drought and climate change presents a significant risk to agricultural production, increasing the urgency of finding environmentally friendly solutions to ensure global food security. Drought stress altered the stomatal conductance, osmotic adjustment, antioxidant, root architecture and morphology, regulation of hormonal signaling, metabolic regulations, and molecular responses in crop plants. In this context, plant growth-promoting rhizobacteria (PGPR) has emerged as a crucial sustainable agricultural solution in a changing climate. These bacteria significantly alleviate drought stress in crop plants through various mechanisms, including modifying root morphology, regulating stress-responsive genes, influencing plant hormones and stress signalling pathways, and producing volatile organic compounds and exopolysaccharides. Furthermore, PGPR improves plant resilience to drought by enhancing water and nutrient uptake efficiency, modulating stress hormone levels, and inducing systemic resistance mechanisms. This chapter explores the sophisticated roles of PGPR in mitigating drought stress, highlighting recent advances in understanding their interactions with crop plants under changing climatic conditions. Additionally, it discusses practical applications of PGPR-based strategies for sustainable agriculture production. It emphasizes their potential to enhance crop yields, reduce environmental impact, and promote resilience in agricultural systems vulnerable to drought. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
Synergistic co-metabolism enhancing the crude oil degradation by Acinetobacter oleivorans DR1 and its metabolic potential
(American Society for Microbiology, 2025) Lairenjam Paikhomba Singha; Renuka Kumari; Keisam Malabika Singha; Piyush Pandey; Pratyoosh Shukla
Bacterial degradation of hydrocarbons during co-metabolism with glucose often resulted in variable degradation efficiency. This study explored the mechanistic understanding of the metabolic response during co-metabolism in Acinetobacter oleivorans DR1 using a metabolomics approach. We reported that glucose slowed the growth rate of DR1 with a 7-h lag phase in a combined media containing crude oil, glucose, and biosurfactant, yet glucose supplement enhanced the degradation rates by 31% for dodecane and 18% for triacontane compared to culture amended with crude oil and biosurfactant. This demonstrated that glucose may not be the preferred carbon and energy source, but it still significantly influences hydrocarbon metabolism through increased synthesis of fatty acids and low molecular weight organic acids (glutaric, citric, and tartaric acid, etc.). Principal component analysis revealed the distinct clusters of metabolites among the culture conditions, highlighting the minimal effect of biosurfactant. Our study reports the role of significant metabolites in crude oil culture, proving the gluconeogenesis capability of DR1. The pre-screening of the metabolic pathway concluded that trehalose was crucial in combating stress imposed during hydrocarbon degradation. Hence, A. oleivorans DR1 can be used to degrade hydrocarbons and has a pivotal role in synergistic co-metabolism during crude oil degradation. © © 2025 Singha et al.