Browsing by Subject "tea"
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Item Open Access Copper toxicity In plants: a review and a case study on tea(University of North Bengal, 2016-03) Saha, Dlpanwita; Mandal, SimaCopper in trace amounts is essential for various metabollc processes In the plant such as photosynthes is, ..:arbohydra te distribution, and protein metabolism but at high concentration it causes physiological stress through genera tion of free radicals that Induce the production of reactive oxygen species (ROS) via Haber \ i\1eiss and Fenton reactions . Copper-Induced generation of hydrogen peroxide, hydroxyl radicals, or other react!\~ oxygen species has been directly .correlated with the damage to protein and lipids that may lead to reduced growth and even death. Tea ( Camellia sinensls (L.) O. Kuntze) is an economically important plantation crop in India w ith round the year productivity. Copper based fungicides are cheap and effective i n controlling funga l diseases and are used consistently throughout the year to combat different fungal diseases that pose a major threat to tea production. Excess Cu 2 + has been found to alter several physiochemical parameters in the tea plants. A more detailed study on mechanisms of Cu 2+ toxicity at the gene level is warranted.Item Open Access Copper toxicity in plants: a review and a case study on tea(University of North Bengal, 2020-03) Saha, Dipanwita; Mandal, Sima; Saha, AniruddhaCopper in trace amounts is essential for various metabolic processes in the plant such as photosynthesis, carbohydrate distribution, and protein metabolism but at high concentration it causes physiological stress through generation of free radicals that induce the production of reactive oxygen species (ROS) via Haber-Weiss and Fenton reactions. Copper-induced generation of hydrogen peroxide, hydroxyl radicals, or other reactive oxygen species has been directly correlated with the damage to protein and lipids that may lead to reduced growth and even death. Tea (Camellia sinensis L. (O.) Kuntze) is an economically important plantation crop in India with round the year productivity. Copper based fungicides are cheap and effective in controlling fungal diseases and are used consistently throughout the year to combat different fungal diseases that pose a major threat to tea production. Excess Cu2+ has been found to alter several physiochemical parameters in the tea plants. A more detailed study on mechanisms of Cu2+ toxicity at the gene level is warranted.Item Open Access Exploitation of Rhizosphere microorganisms of tea for protection against root rot pathogens(University of North Bengal, 2008) Chowdhury, Prabir Roy; Chakraborty, Usha and Chakraborty B NItem Open Access From Obscurity to a Sub-Divisional Headquarter: Siliguri in Colonial Period(University of North Bengal, 2017-03) Kumari, MinaksheeSiliguri is a city which spans across the Darjeeling and Jalpaiguri districts in the Indian state of West Bengal. The city is located on the banks of the Mahananda River and the foothills of the Himalayas. Siliguri is known for its "4T": Tea, Timber, Tourism and Transport and is one of the fastest developing and growing metropolis of the state and also of the country. This city with sky scrapers, big hotels, many residential townships, three Railway stations and airports is boosted as the "Uncrowned capital of North Bengal" by the newspapers. However, a hundred years before this metropolis was only a small village. This research article tries to trace the colonial history of Siliguri, the conduct it received from the colonial rulers and the reasons for its quick unprecedented development.Item Open Access Generation and characterization of expressed sequence tags of tea (Camellia sinensis L (O) kuntze)(University of North Bengal, 2011) Das, Akan; Saha, DipanwitaItem Open Access Genomic fingerprinting of tea germplasm and analysis of transcript accumulation of a defense protein involved during induced systemic resistance(University of North Bengal, 2008) Roy, Subhas Chandra; Chakraboty, B NItem Open Access Induction of resistance in tea (Camellia sinensis (L.) O. Kuntze) by biotic and abiotic inducers aganist lasiodiplodia theobromae (Pat) griffon & mauble for management of diplodia disease(University of North Bengal, 2008) Mandal, Parimal; Saha, AniruddhaItem Open Access Investigations of plant growth promoting rhizobacteria of tea and elucidation of their mechanism of action(University of North Bengal, 2006) Basnet, Merab; Chakraborty, Usha and Chakraborty BiswanathItem Open Access Serological detection of sphaerostible repens B. and Br. causing violet root rot disease of tea and its management(University of North Bengal, 2002) Das, Jyotsna; Chakraborty, UshaItem Open Access Studies om host-parasite interaction with special reference to grey blight disease of tea and its phylloplane microorganisms(University of North Bengal, 1995) Das, Subir Kumar; Chakraboty, B NItem Open Access Studies on anthropogenic stresses in tea (Camellia Sinensis (L) O. Kuntze)(University of North Bengal, 2009) Saha, Gargi; Chakraborty, UshaItem Open Access Studies on copper toxicity on cultivated varieties of tea of north east India(University of North Bengal, 2015) Mandal, Sima; Saha, Dwipanwita and Saha, AniruddhaItem Open Access Studies on multicomponent coordinated defense strategies in tea against foliar fungal pathogens and helopeltis theivora(University of North Bengal, 2005) Biswas, Rakhee Das; Chakraboty, B NItem Open Access Studies on sclerotial of tea and its management(University of North Bengal, 2006) Bhagat, Indramani; Chakraboty, BiswanathItem Open Access Studies on the Brown Blight disease of tea Camellia sinensis L. (O.) Kuntze cause by Glomerella cingulata (stoneman) Spauld. & Schrenk. and its interaction with phylloplane microorganisms(University of North Bengal, 1995) Das, Gouri; Chakraborty, UshaItem Open Access Studies on the effect of climate and nutrients on selected Physiological and Biochemical parameters of some tea Camellia sinensis (L) O. Kuntze cultivars(University of North Bengal, 1997) Kabir, Sayed Edward; Das, A PItem Open Access Studies on the resistance of tea Camellia Sinensis (L). O.KTZE to Bipolaris carbonum Nelson(University of North Bengal, 1992) Saha, Aniruddha; Chakraborty, B NItem Open Access A Study on certain hydrolases and oxidoreductases of major arthropod pests of tea from Darjeeling foothill and its adjoining plain(University of North Bengal, 2007) Sarker, Mayukh; Mukhopadhyay, AnandaItem Open Access Urbanization of the Siliguri town: Understanding the transformation from Union Board to Municipal Corporation (1915-1994)(University of North Bengal, 2018-03) Khasnobish, SudipSiliguri situated in the foothills of the Himalayas and about eight hundred and forty two feet above the sea level is now a part of the district of Darjeeling in the state of West Bengal .During the colonial period there were three police stations under Siliguri subdivision i.e Siliguri, Phansidewa and Khoribari. Siliguri is termed as the uncrowned capital of Northern part of Bengal popularly known as North Bengal. Some notable scholars and academicians have contributed in the studies of urbanization of Darjeeling hill town and very few academic works have been done. The focus was largely on the growing commercial activities of Siliguri after post- partition era. Certain areas of study have not been touched. The proposed article intends to understand the various issues or factors which transformed Siliguri from a sleepy hamlet to a Municipal Corporation within a very short period during 20th century and to find out the importance of its strategic geographical location in the context of ongoing Indo-Chinese conflict after Doklam.