Deen Dayal Upadhyay Gorakhpur University

About: Deen Dayal Upadhyay Gorakhpur University is a education organization based out in Gorakhpur, Uttar Pradesh, India. It is known for research contribution in the topics: Thermal decomposition & Lymnaea acuminata. The organization has 1032 authors who have published 1591 publications receiving 21734 citations. The organization is also known as: Gorakhpur University.

Chlorophyllin Bait Formulation and Exposure to Different Spectrum of Visible Light on the Reproduction of Infected/Uninfected Snail Lymnaea acuminata.

Abstract: Fasciolosis is a waterborne disease, caused by Fasciola species. Snail Lymnaea acuminata is an intermediate host of these flukes. Control of snail population is major tool in reducing the incidences. Variation in light intensity and wavelength caused significant changes in reproduction pattern of snails. Maximum fecundity was noted with bait containing carbohydrate (starch, 468 ± 0.10/20 snails) or amino acid (serine, 319 ± 0.29/20 snails) as attractant. Sublethal feeding of chlorophyllin bait with starch or serine attractant to infected and uninfected snails caused significant reduction in fecundity, hatchability, and survivability. These significant changes are observed in snails exposed to different spectral band of visible light and sunlight. Maximum fecundity of 536 ± 2.0 and minimum of 89.3 ± 0.4 were noted in snails not fed with bait and exposed to sunlight and red spectral band, respectively. There was complete arrest in the fecundity of infected and uninfected snails and no survivability of uninfected snails after 48 h feeding with bait containing chlorophyllin + attractant. Minimum hatchability (9.25 ± 0.5) was noted in red light exposed, chlorophyllin + starch fed infected snails and hatching period of bait fed snails was prolonged. Conclusively, chlorophyllin bait and red light reduce reproduction capacity in snails.

Abiotic factors and anti-reproductive action of bait containing eugenol against Lymnaea acuminata.

Abstract: The effect of abiotic factor (temperature, pH, dissolved oxygen, carbon dioxide) on the reproduction of snail L. acuminata fed to bait containing 40% and 80% of 24h LC50 eugenol have been reported in this paper. Feeding of baits containing sub-lethal concentration of eugenol caused a significant reduction in fecundity, hatchability and survival of young snails. Maximum (1644 egg/20 snails) and minimum (228 eggs/ 20 snails) fecundity was observed in month of May and December, respectively. There was a significant (P<0.05) change in the endogenous level of protein, amino acid, DNA and RNA in the ovotestis of L. acuminata. Treatment of 80 % of 24h LC50 with eugenol in bait caused maximum reduction in protein (52.12% of control), amino acid (11.89% of control), DNA (30.90% of control) and RNA (13.12% of control) level. Simultaneous, inhibition in acetylcholinesterase (AChE) activity in nervous tissue was also noted. Maximum inhibition in AChE activity (36.19% of control) was observed in snail exposed to 80 % of 24h LC50 of eugenol.

Identification and characterization of two phytoplasma subgroups (16SrXI-D and 16SrXIV-A) associated with lychee ( Litchi chinensis Sonn) in India

Abstract: Leaf rolling, necrosis and apical bud proliferation symptoms were recorded on lychee plants at Bhatpar Rani (Deoria district) and Gorakhpur (Gorakhpur district) of Eastern Uttar Pradesh, India, in 2013–2014. Symptomatic lychee leaf samples were analyzed for phytoplasma association by nested PCR assays which yielded ~1.2 kb amplicons with R16F2n/R16R2 primer pair from the symptomatic samples of both the places. Pairwise sequence comparison and phylogenetic analysis of 16S rRNA gene sequences of lychee phytoplasma strains from Deoria and Gorakhpur confirmed the association of two groups (16SrXI and 16SrXIV) of phytoplasmas. Virtual analysis of 16S rDNA sequences of both the lychee phytoplasma strains classified them as 16SrXI-D (Deoria) and 16SrXIV-A (Gorakhpur) subgroups, which are new reports to the world.

Studies on Energetic (Non) Compounds. Part 21: Preparation and thermal decomposition of ring substituted dimethyl anilinium bromides

Abstract: Six isomeric dimethyl anilinium bromides (DMABr) have been prepared and characterized by elemental and spectroscopic studies. Thermal decomposition of these salts has been studied by TG and simultaneous TG-DTA techniques. Kinetic parameters have been evaluated from isothermal TG data using contracting area and contracting cube equations. The decomposition pathways have also been suggested which involves simultaneous sublimation (at lower temperature) and dissociative vaporization/decomposition (at higher temperature).