Browsing by Author "Devendra Jain"

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Mechanisms and applicability of nanotechnology-mediated beneficial microbes in mitigation of salinity stress in plants
(Elsevier Masson s.r.l., 2025) Sudhir K. Udpadhay; Akash Hidangmayum; Devendra Jain; Padmanabh Dwivedi
Soil salinity is a major abiotic-stress that severely impacts global agricultural productivity by reducing plant's water-uptake, causing ion toxicity, and disrupting metabolic balance. Beneficial microorganisms, including plant growth-promoting rhizobacteria (PGPR) and fungi, play a remarkable role in mitigating salt-stress through mechanisms such as osmotic adjustment, ion homeostasis, phytohormone regulation, and antioxidant defense systems. Under very high salinity, microbial inoculants also often suffer from poor survival rates, ineffective root colonization, and uneven field performance. Recent developments in nanotechnology have brought fresh approaches to maximize microbial effectiveness, therefore, offering better defense against environmental stresses and enhancing plant-microbe interactions. Under salt stress, engineered nanomaterials including nanocarriers and nano-formulations improve microbial viability, enable regulated administration, and induce biofilm formation, thereby strengthening plant resistance. Furthermore, nanoparticles enhance stress tolerance systems by modulating critical signal transduction pathways and inducing genomic and proteomic changes in microorganisms. Despite these promising benefits, concerns regarding nanoparticle toxicity, environmental persistence, regulatory challenges, and economic feasibility remain largely unaddressed. Comprehensive risk analyses and the creation of environmentally benign, biodegradable nanomaterials are necessary given the possible long-term effects mediated nanoparticles on microbial populations, soil's quality, and including crop's safety. This review explores emerging trends in nano-enabled agricultural applications, critically assesses the mechanistic contribution of nanotechnology in reducing microbial-mediated salinity stress, and addresses important issues and future research directions for the sustainable deployment of nanotechnology in plant stress management. © 2025 Elsevier Masson SAS
Mechanistic Insights and Potential Use of Siderophores Producing Microbes in Rhizosphere for Mitigation of Stress in Plants Grown in Degraded Land
(Frontiers Media S.A., 2022) Pratiksha Singh; Prabhat K. Chauhan; Sudhir K. Upadhyay; Rajesh Kumar Singh; Padmanabh Dwivedi; Jing Wang; Devendra Jain; Mingguo Jiang
Plant growth performance under a stressful environment, notably in the agriculture field, is directly correlated with the rapid growth of the human population, which triggers the pressure on crop productivity. Plants perceived many stresses owing to degraded land, which induces low plant productivity and, therefore, becomes a foremost concern for the future to face a situation of food scarcity. Land degradation is a very notable environmental issue at the local, regional, and global levels for agriculture. Land degradation generates global problems such as drought desertification, heavy metal contamination, and soil salinity, which pose challenges to achieving many UN Sustainable Development goals. The plant itself has a varied algorithm for the mitigation of stresses arising due to degraded land; the rhizospheric system of the plant has diverse modes and efficient mechanisms to cope with stress by numerous root-associated microbes. The suitable root-associated microbes and components of root exudate interplay against stress and build adaptation against stress-mediated mechanisms. The problem of iron-deficient soil is rising owing to increasing degraded land across the globe, which hampers plant growth productivity. Therefore, in the context to tackle these issues, the present review aims to identify plant-stress status owing to iron-deficient soil and its probable eco-friendly solution. Siderophores are well-recognized iron-chelating agents produced by numerous microbes and are associated with the rhizosphere. These siderophore-producing microbes are eco-friendly and sustainable agents, which may be managing plant stresses in the degraded land. The review also focuses on the molecular mechanisms of siderophores and their chemistry, cross-talk between plant root and siderophores-producing microbes to combat plant stress, and the utilization of siderophores in plant growth on degraded land. Copyright © 2022 Singh, Chauhan, Upadhyay, Singh, Dwivedi, Wang, Jain and Jiang.
Recent advancement of nano-biochar for the remediation of heavy metals and emerging contaminants: Mechanism, adsorption kinetic model, plant growth and development
(Academic Press Inc., 2024) Himanshu K. Pathak; Chandra Shekhar Seth; Prabhat K. Chauhan; Gopal Dubey; Garima Singh; Devendra Jain; Sudhir K. Upadhyay; Padmanabh Dwivedi; Kuan Shiong Khoo
Even though researches have shown that biochar can improve soil-health and plant-growth even in harsh environments and get rid of harmful heavy metals and new contaminants, it is still not sustainable, affordable, or effective enough. Therefore, scientists are required to develop nanomaterials in order to preserve numerous aquatic and terrestrial species. The carbonaceous chemical known as nano-biochar (N-BC) can be used to get rid of metal contamination and emerging contaminants. However, techniques to reduce hetero-aggregation and agglomeration of nano-biochar are needed that lead to the emergence of emerging nano-biochar (EN-BC) in order to maximise its capacity for adsorption of nano-biochar. To address concerns in regards to the expanding human population and sustain a healthy community, it is imperative to address the problems associated with toxic heavy metals, emerging contaminants, and other abiotic stressors that are threatening agricultural development. Nano-biochar can provide an effective solution for removal of emerging contaminants, toxic heavy metals, and non-degradable substance. This review provides the detailed functional mechanistic and kinetics of nano-biochar, its effectiveness in promoting plant growth, and soil health under abiotic stress. Nonetheless, this review paper has comprehensively illustrated various adsorption study models that will be employed in future research. © 2024 Elsevier Inc.
Root Exudates: Mechanistic Insight of Plant Growth Promoting Rhizobacteria for Sustainable Crop Production
(Frontiers Media S.A., 2022) Sudhir K. Upadhyay; Abhishek K. Srivastava; Vishnu D. Rajput; Prabhat K. Chauhan; Ali Asger Bhojiya; Devendra Jain; Gyaneshwer Chaubey; Padmanabh Dwivedi; Bechan Sharma; Tatiana Minkina
The breaking silence between the plant roots and microorganisms in the rhizosphere affects plant growth and physiology by impacting biochemical, molecular, nutritional, and edaphic factors. The components of the root exudates are associated with the microbial population, notably, plant growth-promoting rhizobacteria (PGPR). The information accessible to date demonstrates that PGPR is specific to the plant's roots. However, inadequate information is accessible for developing bio-inoculation/bio-fertilizers for the crop in concern, with satisfactory results at the field level. There is a need to explore the perfect candidate PGPR to meet the need for plant growth and yield. The functions of PGPR and their chemotaxis mobility toward the plant root are triggered by the cluster of genes induced by the components of root exudates. Some reports have indicated the benefit of root exudates in plant growth and productivity, yet a methodical examination of rhizosecretion and its consequences in phytoremediation have not been made. In the light of the afore-mentioned facts, in the present review, the mechanistic insight and recent updates on the specific PGPR recruitment to improve crop production at the field level are methodically addressed. Copyright © 2022 Upadhyay, Srivastava, Rajput, Chauhan, Bhojiya, Jain, Chaubey, Dwivedi, Sharma and Minkina.
Spontaneously Fermented Cereal Based Products: An Ancient Health Promoting Formulae for Consumption of Probiotic Lactic Acid Bacteria
(AMG Transcend Association, 2023) Kamalesh Kumar Meena; Neetu Kumra Taneja; Devendra Jain; Ankur Ojha; Chakkaravarthi Saravanan; Durga Shankar Bunkar
The adverse health effects of dairy-based products like lactose intolerance, cholesterol content, cow milk allergy, and religious sentiment are a few concerns that lead to an interest in non-dairy fermented foods and beverages prepared using cereal, legumes, and millet. Cereal fermentation by Lactic Acid Bacteria (LAB) is an ancient health-promoting technique with proven health benefits like controlling gastrointestinal disorders, managing cardiovascular diseases, cholesterol reduction, anticarcinogenic activity, immunomodulation, production of antimicrobial agents, and antitumor activities apart from providing nutrition. Several studies have explored probiotic LAB from fermented dairy products. However, limited studies are available, especially in the Indian context, that demonstrate the importance of Indian cereal-based fermented products as carriers and sources of potential probiotic strains. It is, therefore, vital to bridging the knowledge gap underlying the opportunities hidden in Indian cereal-based functional fermented products, their exploitation as a source of probiotics, and potential health benefits harbored for the global population. Therefore, this paper reviews recent research on different spontaneously fermented cereal-based foods and beverages of the Indian subcontinent, which are a potential source of probiotics, and summarizes the advances made in identifying and characterizing potential probiotic attributes of LAB strains from these products. The significance of LAB in cereal-based products, evaluation parameters of probiotic strains, experimental probiotic products, commercial potential, challenges, and future perspectives are also discussed. © 2022 by the authors.