NBU Journal of Plant Sciences, Vol. 01

Permanent URI for this collectionhttps://ir.nbu.ac.in/handle/123456789/4388

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    Ethnobotanical studies in India with notes on Terai-Duars and Hills of Darjiling and Sikkim
    (University of North Bengal, 2007-03) Das, A. P.; Ghosh, Chandra; Sarkar, Ajita; Biswas, Rajib
    The very survivability of man is greatly associated with plants since his origin. Plants are responsible for the supply of Man's oxygen, food, medicine, fibre, shelter and what not! Also the relationship between man and environment in general has never been static and is changing continuously. But this is not the case with tribal/ aboriginal communities the world over. The life, culture and traditions of these communities have remained almost undisturbed and static for hundreds of years. They are the living archaeological museums of ancient traditions and cultural heritage of a nation.
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    Can household-level fermentation technology assure food safety?
    (University of North Bengal, 2007-03) Sarkar, Prabir K
    The term 'fermented food" is defined as any food that has been subjected to the action of microorganisms or enzymes so that desirable biochemical changes cause significant modification of the food. Fermented foods enjoy worldwide popularity as attractive, wholesome and nutritious components of our diet. In the past, household-level fermentation technology originated and evolved through trial and error experiences gathered by successive generations of food producers. Only relatively recently have science and technology started to a better understanding of the underlying principles of the fermentation processes and of the essential requirements to ensure nutritional and sensory qualities as well as safety of fermented foods.
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    Immunotechniques: Concept and application in plant pathology
    (University of North Bengal, 2007-03) Saha, A.; Dasgupta, S.; Saha, D.
    Proper management of plant diseases requires accurate disease diagnosis and precise identification of the phytopathogens involved. Traditional and conventional methods of disease diagnosis and pathogen detection have several demerits. It takes a lot of time to diagnose a disease and to identify a pathogen accurately by traditional approaches. Moreover, results are not always conclusive because similar symptoms can be caused by different pathogens or physiological conditions and sometimes it is very difficult to distinguish closely related organisms on the basis of their morphological characters only. Thus the traditional methods normally applied for pathogen identification and disease diagnosis are less sensitive and less reliable. The need for rapid and accurate identification and diagnostic methods to identify the organisms that cause plant diseases are essential for the formulation of effective disease control strategies.
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    Reactive oxygen species and environmental stresses
    (University of North Bengal, 2007-03) Chakraborty, Usha
    Reactive oxygen species (ROS) include oxygen ions, free radicals and peroxides both inorganic and organic. They are generally very small molecules and are highly reactive due to the presence of unpaired valence shell electrons. ROSs form as a natural byproduct of the normal metabolism of oxygen and have important roles in cell signaling. While ROS have the potential to cause oxidative damage to cells during environmental stress, recent studies have shown that ROS play a key role in plants as signal transduction molecules involved in mediating responses to pathogen infection, environmental stresses, programmed cell death and developmental stimuli. The rapid increase in ROS production, referred to as 'the oxidative burst', was shown to be essential for many of these processes, and genetic studies have shown that respiratory burst oxidase homolog (Rboh) genes, encoding NADPH oxidases, are the main producers of signal transduction-associated ROS in cells during these processes.
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    Tea Polyphenols: variation with respect to agro-climatic condition, their impact in human health and soil environment
    (University of North Bengal, 2007-03) Misra, Tarun Kumar; Mandal, Palash
    Tea is the richest source of different kinds of polyphenols and potential antioxidants. recent years numerous biochemical and physiological studies have demonstrated that accumulation of polyphenols in tea is significantly related to soil nutrient availability. In this review recent advances in current understanding of bioactive polyphenols and their accumulation in tea plant have been discussed concisely.
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    Agrobacterium-mediated gene transfer in higher plants
    (University of North Bengal, 2007-03) Roy, Subhas Chandra
    The genetic engineering of plants actually started with the discovery of a pathogenic bacterium, Agrobacterium tumefaciens, causing a disease known as crown gall (tumor). The bacterium transfers a set of genes from its plasmid into infected plant cells, where the transferred genes are expressed and produced gall at the junction of root and stem (i.e., crown region of the plant). This discovery has revolutionized the plant transformation method through which any gene can be introduced into plant genome to change their genetic make-up for commercial benefits, spaning from disease resistance to the production of pharmaceutically important proteins.