NBU Journal of Plant Sciences

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The NBU Journal of Plant Sciences serves as the official organ of the Department of Botany for the publication of research papers by its members and researchers. The journal is sent free to its members and different academic institutions on demand.

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2014 - 201922020 - 20222

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    Assessment of Growth Performance and Histochemical Localisation of Reactive Oxygen Species in Fenugreek under Exogenous Calcium Ion Priming
    (University of North Bengal, 2022) Gupta, Saran Kumar; Mandal, Palash
    objective of present study was to evaluate the response of the fenugreek seeds primed with various elicitors such as calcium chloride (CC) as an exogenous source of calcium ion; a calcium chelator: Ethylene glycol-bis(2-aminoethylether)-N,N,N´,N, tetra acetic acid (EG); and Lanthanum chloride (LC): a calcium channel blocker, under salinity stress. Significant improvement in the growth parameters of fenugreek seedlings was observed comparing with control. The stress tolerance index (STI) and histochemical detection of reactive oxygen species were performed to evaluate the tolerance of the fenugreek against salinity stress. The results exhibited noteworthy inhibitory effect of salinity stress in control set which was significantly mitigated by the exogenous calcium ion application. Furthermore, under the influence of calcium ion antagonists, EG and LC the adverse effect of salinity was more prominent than control set. In conclusion present investigation revealed that exogenous calcium ion is an ideal elicitor for enhancing growth and development of the fenugreek with better salinity stress management.
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    ItemOpen Access
    Study of Major Isoflavones in Mungbean Seedlings with Special Emphasis on Its Enhanced Antioxidant Activity After Solid Matrix Priming with Selected Elicitors Including Nano-Chitosan Under Salinity Stress
    (University of North Bengal, 2022) Sen, Sujoy Kumar; Mandal, Palash; Bhandari, Jnan Bikash
    For a long time, mung bean has been a well-liked crop. It is frequently used as a popular dish in the primarily cereal-based diets of Asian countries for its physiological functionalities, such as antioxidant, antitumor, and antidiabetic activities. Isoflavones present in legume-based foods have high antioxidant potential. These isoflavones are considered beneficial to human health and are linked to a reduced risk of cardiovascular disease, osteoporosis, and the prevention of certain types of cancer in humans, including breast, prostate, and colon cancer, as well as menopausal symptoms. On the other hand, nanotechnology is starting to look like an excellent method to boost food production and make farming less hazardous to the environment. Fascinatingly, the seed nano-priming method demonstrated promising results to mitigate the detrimental effects of different abiotic stress factors including salinity stress on crop plants and has thus, led to higher crop yields. The current study aimed to evaluate the effects of solid matrix priming (SMP) using nano-chitosan in mung bean sprouts under salinity stress related to the production of major mung bean isoflavones, which were detected through high-resolution liquid chromatography-mass spectrometry. When compared to unprimed seedlings exposed to salinity stress conditions, phytochemical quantification showed that SMP with nano-chitosan showed improved antioxidant activities as well as the highest total flavonoids and proline content. Under salinity stress, SMP with nano-chitosan significantly increased the biochemical anti-oxidative properties in germinated mung bean seeds, and also provided salt tolerance. As a familiar healthier choice, and because of the significance of mung bean sprouts for human health and the industry's rapid expansion, nutritional enrichment of this food has emerged as a significant field of study.
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    ItemOpen Access
    Nitric oxide and calcium signalling in plants under salinity stress and their crosstalk - A Review
    (University of North Bengal, 2016-03) Gupta, S.K.; Mandal, P.
    Salinity is considered as one of the major factor affecting the crop production throughout the world. The oxidative stress induced by salinity can retard plant growth and yield as major part of energy is wasted on conserving water and improving ionic balance. The free radicals produced during stress are considered to be a major factor for most of the damages as these free radicals attack vital biomolecules such as lipids, protein and carbohydrates which are the basic requirements of almost all physiological and developmental processes. Understanding the mechanism of stress tolerance along with the involvement of important signalling molecules in stress signalling network is essential for crop improvement. Likewise, the two signalling molecules nitric oxide and calcium ion have been reported to be actively involved in upregulation of various stress response mechanism thus indicating the existence of a possible cross talk among these molecules and other associated pathways. In this review, emphasis was given on the impact of salinity and oxidative stress mediated damages on plant system. Additionally, the role of nitric oxide and calcium ion as signalling molecules in response to stress signals and their implication in mitigation of salinity stress has also been discussed.
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    ItemOpen Access
    Structural and functional role of salt glands of cogon grass (Imperata cylindrica (L.) Raeuschel) under salinity stress
    (University of North Bengal, 2014-03) Roy, S.; Chakraborty, U.
    Salt glands in Poaceae are often found in the Panicoid and Chloridoid grasses. Imperata cylindrica is a perennial panicoid grass with widespread distribution from non-saline to saline habitats. The efficient mechanism of salt gland is an essential property of the salt tolerance of any plant. Salt glands in Imperata are present and actively function to remove the toxic Na+ ion from the cytoplasm of the mesophyll cells. SEM study reveal the presence of salt glands in both control and NaCl treated plants (200 mM NaCl for 3 days), but the density of salt glands is more in NaCl treated leaf samples. Also the vacuolarization of the cells is an important attribute for the sequestration of excess Na+ ion. The concerted activity of these two mechanisms in Imperata is important for maintaining osmotic balance inside the cells. The time dependent lowering of H202 and O2 and increased accumulation of proline under NaCl stress was also observed in Imperata. This accounts for a favourable environment for other biological processes to occur. Also the lower electrolyte leakage and membrane lipid peroxidation accounts for hassle free functioning of salt glands under NaCl stress.