Browsing by Author "Diptanu Datta"

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Endophytes: Rendering Systemic Resistance to Plants
(Springer, 2022) Diptanu Datta; Lopamudra Behera; Vallabhaneni Tillak Chaudhary; Sumit Kumar; Kartikay Bisen
Endophytes are those microorganisms that live throughout the life cycle of a plant without causing noticeable negative signs. As endophytes are known to induce resistance in plants and can also suppress phytopathogens, they can be used as a replacement for harmful chemicals. Mostly endophytes establish a symbiotic or commensal relationship with plants, thereby benefitting the latter in terms of nutrition, growth, and disease resistance. Endophytes are known to induce plant hormones, the key chemical constituents that provide tolerance against a number of abiotic and biotic stresses. Endophytes induce resistance in plants and also inhibit phytopathogens by producing several bioactive molecules, defense-related enzymes, PR proteins, siderophores, hyper parasitism, antibiosis, and through induced systemic resistance. Different bioformulations on endophytic fungi and bacteria have yielded promising results in the management of diseases. After reviewing the work done on endophytes, it could be concluded that in the era of sustainable agriculture, endophytes opened a new venture in terms of eco-friendly disease management. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2022.
Physiological, biochemical, and molecular adaptation mechanisms of photosynthesis and respiration under challenging environments
(Elsevier, 2021) Prajjal Dey; Diptanu Datta; Debasish Pattnaik; Deepali Dash; Debanjana Saha; Darshan Panda; Bishal Binaya Bhatta; Selukash Parida; Udit Nandan Mishra; Jyoti Chauhan; Himanshu Pandey; Rajesh Kumar Singhal
Photosynthesis and respiration are two central and basic physiological processes in regulation to carbon budget and carbon sink in the terrestrial ecosystem, as well as assessment and feedback of highly variable and fluctuating environmental conditions. Elevated CO2, salinity, alkalinity, drought, flood, nutrient deficiency and toxicity, extreme cold and heat, and various natural and anthropogenic pollutants are critical challenges in near future and their primary target is to alteration of photosynthetic and respirational processes, which ultimately influence the final yield potential of major agricultural crops. However, plants adapt themselves to these environmental circumstances via complicated changes at physiochemical and molecular levels. The current chapter highlights the underline mechanisms of photosynthetic and respiration in response to climate change at physiological, biochemical, and molecular levels. This chapter also covers the timely and substantial information regarding the recent progress in photosynthesis and respiration research. First, an outline of future climate change and its impacts on plant processes, functions, and yield potential is presented. Then, responses and adaptation of photosynthesis and respiration mechanisms against multiple stresses are discussed. Globally the present issues are crucial and this chapter helps in better understanding how plants deal with climatic change and their physiological, cellular, and molecular processes to the development of sustainable environment. © 2022 Elsevier Inc. All rights reserved.
Psychrophilic microbes: Biodiversity, beneficial role and improvement of cold stress in crop plants
(Elsevier, 2022) Sumit Kumar; Bana Sravani; Tulasi Korra; Lopamudra Behera; Diptanu Datta; Pushpendra Kumar Dhakad; M.K. Yadav
The beneficial microbes play an important role in farming, medical and industrial processes. The precious microbes belong to varied groups such as archaea, bacteria and fungi which could interact with plant species and also sort out from different habitats like extreme environments (acidic, alkaline, drought, pressure, salinity and temperatures). Structural adaptations like Cell envelope, Cell membrane, Cryoprotection, Heat shock proteins, Cold shock proteins, RNA degradosome, Enzymes, Chaperones and Metabolic processes microbes can tolerate under stress conditions. Psychrophilic microbes lead to a beneficial role in Biological Nitrogen Fixation (BNF), the Solubilization of nutrients and also for antibiotic production like DAPG, HCN, Phenazine, Oligomycin A, Kanosamine, Tensin, Tropolone, Pyrrolnitrin and Zwittermicin will suppress the disease growth. Microorganisms with therapeutic benefits can be used for sustainable agriculture and human health. Sustainable agriculture requires the use of different tactics to boost crop yields and food grain production through the introduction of terms of environmental issues. Psychrophilic plant growth-promoting (PGP) microbes can strongly affect crop growth under chilly environments through biological N2-fixation, siderophore production, hormone-regulating plant growth and antagonism activities © 2022 Elsevier Inc. All rights reserved.
Role of microbial consortia in remediation of soil, water and environmental pollution caused by indiscriminate use of chemicals in agriculture: Opportunities and challenges
(Elsevier, 2022) Lopamudra Behera; Diptanu Datta; Sunil Kumar; Sumit Kumar; Bana Sravani; Ram Chandra
After Green Revolution, the usage of chemical pesticides and fertilizers has been increased to enhance the yield of crops to feed the burgeoning world’s population by managing several pests. But the increase in anthropogenic activities has led to increased pollution on the earth’s surface through indiscriminate use of the harmful chemicals. Excess and improper disposal of nutrients and toxic compounds not only hampers the physical and chemical properties of soil, but also pollute the ground water via surface runoff or leaching which directly or indirectly affects lives of plants, animals, birds, marine organisms and human beings allowing bio amplification to damage the ecological structure. Stubble burning is another harmful approach to achieve extensive cropping which pollutes the environment by producing greenhouse gases and also affects the beneficial soil microorganisms and crop development. However, chemical contaminants can be eradicated from polluted soil and water by the use of efficient microorganisms. Microorganisms degrade the complex toxic compounds with the aid of enzymes into simple, non-toxic inorganic compounds and they are very efficient in decomposing the crop residues. However, for rapid degradation, research has been focused on microbial consortium comprising of more than one microorganism to enhance the efficiency of biodegradation due to their capacity for synergistic metabolism. In this book chapter, we have discussed about several applications microbial consortia in remediation of soil, water and environmental pollution caused by indiscriminate use of chemicals in agriculture. © 2022 Elsevier Inc. All rights reserved.