Publications by authors named "P V Chalapathi"

Article Synopsis
  • The melon fly (Zeugodacus cucurbitae) is a significant pest affecting cucurbit crops, leading to considerable yield loss and economic impact.
  • The CRISPR/Cas9 system is a powerful genome editing tool that can target specific genes to create stable genetic changes, which can help manage pest traits more efficiently without needing extensive genetic data.
  • In this study, researchers successfully used CRISPR/Cas9 to mutate the white gene in melon flies, resulting in a white eye phenotype, which aids in understanding gene function and could lead to innovative pest control methods like precision guided sterile insect technique (pgSIT).
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Identification of novel approaches for managing the global pest, the Fall armyworm, Spodoptera frugiperda, is the need of the hour, as it defies many management strategies including synthetic chemicals, Bt transgenics, and so on. Recently CRISPR/Cas9-based genome editing opened up newer avenues to design novel pest management strategies such as precision-guided sterile insect technique (pgSIT). In this regard, genes governing sex determination, egg reproduction, and spermatogenesis could be the prime targets for genome editing.

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A series of novel substituted bisurea 1,4-Diisocyanatobenzene compounds were designed, synthesized and introduced as potent anticancer compounds and screened for their in vitro anti-proliferative activities in human cancer cell lines. The structures of all titled compounds were characterized using Fourier-transform infrared mass spectra, nuclear magnetic resonance spectroscopy, elemental analysis and evaluated their sustainability using biological experiments. A selected group of ten derivatives were apprised for their anti-proliferative activity.

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The objectives of the present work are to design, syhthesize and introduce novel urea/thiourea derivatives of 2-(piperazine-1-yl)-pyrimidine and 1-(4-Fluoro/4-Chloro phenyl)-piperazine molecules as tobacco mosaic virus (TMV) inhibitors. A series of urea/thiourea derivatives containing pyrimidine and piperazine moieties were synthesized, characterized using Fourier-transform infrared (FTIR) mass spectra, nuclear magnetic resonance (NMR) spectroscopy, elemental analysis and evaluated their sustainability using biological experiments. The anti-viral bioassay of the title compounds showed an antiviral activity against TMV.

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Background: Construction activity has made considerable breakthroughs in the past two decades on the back of increases in development activities, government policies, and public demand. At the same time, occupational health and safety issues have become a major concern to construction organizations. The unsatisfactory safety performance of the construction industry has always been highlighted since the safety management system is neglected area and not implemented systematically in Indian construction organizations.

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