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- 저자 : Rawat Shashi (검색결과 2 건)
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Pharmacognostical Evaluation and Phytochemical Standardization of Abrus precatorius L. Seeds
Durgesh Verma,Shashi Shankar Tiwari,Sharad Srivastava,AKS Rawat 한국생약학회 2011 Natural Product Sciences Vol.17 No.1
The seeds of Abrus precatorius L. (Family- Fabaceae) constitute the drugs Abrus, Gunja, or Ratti in commerce. In the Indian System of Medicine, the seeds are used for sciatica, paralysis, headache, dysentery, diarrhoea, leprosy, ulcer, nervous disorders, alopecia, as well as anti-inflammatory, antidiabetic, antibacterial, antitumor, sexual stimulant and abortifacient. Seeds are poisonous and therefore are used after mitigation. The protein abrin is responsible for the highly toxic properties of seeds. Quantitative HPTLC analysis of the methanolic extract of seeds determined the presence of 0.4018% gallic acid and 0.4009% glycyrrhizin. The present study was undertaken to develop an HPTLC method, as well as ascertain the physico-chemical, morphological and histological parameters to establish the authenticity of A. precatorius seeds.
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Tiwari Jagesh Kumar,Mandadi Nagesh,Sridhar Jandrajupalli,Mandal Vikramjit,Ghosh Arpita,Kardile Hemant B.,Naga Kailash C.,Shah Mohd Abas,Rawat Shashi,Venkateswarlu Vallepu,Malik Kamlesh,Bhatnagar Anuj 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.2
The foxglove aphid (or glasshouse potato aphid, Aulacorthum solani Kaltenbach) transmits serious potato viruses (potato virus Y, and potato leaf roll virus) which cause heavy yield losses. Our aim of this study was to pre liminary analysis of draft genome sequence to uncover virulence genes in the aphid. The genome assembly size (316.39 Mb) was very close to its genome size (318.19 Mb) estimated by flow cytometry. The genome completeness (81.8%) was confirmed by the Benchmarking Universal Single Copy Orthologs (BUSCO) analysis indicating 14.90% transposable elements (TEs) in the genome. Of total 22,021 predicted genes, 16,610 were annotated with putative functions of other aphids mainly Myzus persicae, Acyrthosiphon pisum and Diuraphis noxia. We identified virulence genes such as defensive and detoxification genes, salivary genes and chemore ceptors, insecticide resistance genes, virus transmission genes, transcription factors and mitochondrial genes. Importantly, analysis of detoxification genes particularly 53 cytochrome P450s (CYPs) indicated involvement of 23 CYPs families in aphid genome. Further, GO and KEGG pathways analyses showed gene enrichment pre dominantly with molecular function and signal transduction, respectively. Phylogeny analysis revealed genetic divergence among 12 aphid species and Au. solani is closely related with M. persicae. Further, non-synonymous (Ka)/synonymous (Ks) substitutions (Ka/Ks) indicated positive selection for 6 (Ka/Ks > 1) and 122 (Ka/Ks = 0.5–1) single copy orthologous gene pairs between Au. solani and with the pea aphid. Thus, our preliminary draft genome analysis provides new insights of Au. solani to understand molecular basis of aphid biology, host-aphid interactions and adaptation mechanism.
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