Browsing by Author "Pradeep Kumar Sharma"

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Lichen Colonization on Unusual Man-Made Substratum in Western Himalaya
(Springer, 2020) Himanshu Rai; Roshni Khare; Sugam Gupta; Dalip Kumar Upreti; Rajan Kumar Gupta; Bhaskar Charan Behera; Pradeep Kumar Sharma
The lichens along with their natural substratum colonize a variety of man-made substratum. After about half a century of lichenological research in India, there has been no record of lichen colonization on the man-made artificial substratum. The authors here for the first time report colonization of five species of lichens on three samples from two unusual habitats—iron railway sleepers—Heterodermia galactophylla (Tuck.) W.L. Culb. and abandoned woolen socks—Xanthoparmelia bellatula (Kurok. & Filson) Elix & J. Johnst., Physcia gomukhensis D.D. Awasthi & S.R. Singh, Xanthoparmelia congensis (J. Steiner) Hale and Xanthoria candelaria (L.) Th. Fr. in western Himalaya. Two supplementary tables (S1 and S2) are provided, giving details of collection sites and lichen species identified in each sample. The study revealed the extended geographical distribution of the two lichen species, i.e., Heterodermia galactophylla (Tuck.) W.L. Culb and Physcia gomukhensis D.D. Awasthi & S.R. Singh, highlighting the importance of such studies of unusual habitats in lichen diversity and preparation of their inventories. © 2020, The National Academy of Sciences, India.
Mitigating antibiotic pollution in wastewater by harnessing the potential of microalgae-based bioremediation technologies
(Springer, 2024) Amantika Singh; Pooja Singh; Jayant Kashyap; Pooja Tripathi; Krishna Kumar Choudhary; Pradeep Kumar Sharma; Rachan Karmakar; Maulin P. Shah; Vijay Tripathi
The excessive use of antibiotics and their increasing environmental concentrations is a severe threat and potential hazard to public health. Unfortunately, traditional wastewater treatment technologies aren’t efficient against antibiotic- and other emerging contaminant-rich wastewater. Recently, nature-based methods for wastewater treatment, such as algal-based technologies, have been observed to be viable and capable of the significant bioremediation of antibiotics in wastewater environments. Microalgae, including Scenedesmus quadricauda and Chlorella psychrophile, have already been reported as capable of absorbing and removing tetracycline and azithromycin antibiotics, respectively. Numerous algal species can also remove a significant proportion of different numbers of antibiotics through biodegradation when global wastewater pollution is at a record high. Microalgae may even affect the solubility of antibiotics through hydrolysis, leading to a breakdown of the β-lactam ring structure where present or through the resulting changes in pH, etc. This review provides critical insight into the important factors in removing antibiotic pollution from wastewater and enhancing the removal efficiency. © The Author(s) under exclusive licence to Society for Plant Research 2024.