NBU Journal of Plant Sciences, Vol. 14

Permanent URI for this collectionhttps://ir.nbu.ac.in/handle/123456789/5034

EDITORIAL

Over the course of human history, plants have received widespread and occasionally dominant aesthetic and intellectual attention. Research of plant systems can also instruct us on how to handle issues with agriculture, human health, and the environment. The NBU Journal of Plant Sciences (NBUJPS) is an international peer-reviewed journal that has been published by the Department of Botany, University of North Bengal, since 2007. It gives the platform for publishing top-notch research on a variety of topics in plant science, animal-plant interactions, environment and ecology, and the evolution of the living world.

The journal's editorial board publishes high-calibre articles in print and online (https://njps.nbu.ac.in/) in one volume each year. The NBUJPS has officially registered for membership in CrossRef. All the articles will be assigned unique DOI numbers and will include other CrossRef services like similarity checking and reference linking. It gives me extreme pleasure to inform you that the NBUJPS publishes all the articles free of charge.

We are delighted to inform you that volume 14 has been published and will have 11 articles including review and research papers. This volume includes articles on nanotechnology, growth performance, characterization and ecology of various crops and weeds, phytoremediation of diseases and stresses in various crops, and microbes in extreme climates. These articles were contributed by numerous senior professors, scientists, and junior researchers from various institutions. The articles in this issue cover a wide spectrum of recent advancements in both basic and applied fields of plant science research, and they are all very important. Regarding contemporary breakthroughs and need-based research, this volume will greatly benefit all scientists and researchers working in various sectors of plant sciences.

Prof. (Dr.) Monoranjan Chowdhury
Head, Department of Botany

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    Polyethylene Gycol (PEG) Induced Water Stress in Four Different Genotypes of Pea Seedlings and Evaluation of The Induced Defense Mechanism
    (University of North Bengal, 2022) Bantawa, Pranay; Rai, Ritu
    Present work was undertaken on artificially induced water stress on pea seedlings under in vitro conditions in order to select the drought tolerant line. Artificial water stress was induced with PEG-6000 on 15-day old seedlings of four varieties for 4, 8 and 12 days. The activities of antioxidative enzymes like peroxidase, catalase, ascorbate peroxidase, glutathione reductase and superoxide dismutase were assayed in the stressed and control plants. POX activity was increased in the initial stages of stress, but its activity was decreased significantly on the 12th day in all the varieties. APOX also showed a similar trend but the maximum activity was noted in Var 3 on the 8th day. CAT activity decreased in var 1 and var 2 when compared with the control, which, however, increased significantly in var 3 and var 4. A slight increase in the GR activity was observed in var 1 and var 2 at the initial stages of the drought stress but its activity decreased significantly on the 12th day in both these varieties when compared with control plants. However, its activity also increased steadily in var 3 and var 4. Maximum SOD activities were noted on the 4th day of drought stress in all four varieties but its activities decreased steadily on the subsequent 8th and 12th days when compared with control. When antioxidative activities were compared among the four varieties, var 3 and var 4 showed maximum increase in antioxidant activity during the period of drought stress. Among the four varieties, var 3 and var 4 showed greater accumulation of H2O2 during the stress days and were maximum at 12th day. Lipid peroxidation also increased in the same varieties. Maximum proline content was noted in both the root and leaf of var 3, followed by var 4. It was further noted that the chlorophyll content decreased significantly in all four varieties in subsequent longer drought stresses. The accumulation of proline content was steadily higher with an increase in the stress length in all the four varieties. During the drought stress, all the varieties showed an increase in ascorbate content but, it was maximum in var 4 followed by var 3 and the least ascorbate was noted in var 1. The present findings indicate that water stress induces oxidative stress in all the four varieties. However, antioxidative mechanisms were found to be more pronounced in var 4 which, therefore, may be considered as the most tolerant to drought stress.