Piper nigrum finds an extensive application in antibacterial preparations belonging to Ayurvedic system of medicine. A bioguided extraction and fractionation of the petroleum ether extract of the berries of P. nigrum afforded 2E, 4E, 8Z-N-isobutyleicosatrienamide (1), pellitorine (2), trachyone (3), pergumidiene (4) and isopiperolein B (5). Pergumidiene and trachyone are isolated for the first time from P. nigrum. All the isolated compounds were active against Bacillus subtilis, Bacillus sphaericus, and Staphylococcus aureus amongst Gram + ve bacteria, and Klebsiella aerogenes and Chromobacterium violaceum among Gram -ve bacterial strains.
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http://dx.doi.org/10.1016/j.phymed.2003.04.004 | DOI Listing |
J Biomol Struct Dyn
December 2024
Department of Science and Technology, Virology and Vaccine Research Program, Industrial Technology Development Institute, Taguig City, Philippines.
The Nipah virus (NiV), a highly pathogenic zoonotic virus of the family, poses significant threats with its alarming mortality rates and pandemic potential. Despite historical cases, effective therapeutics remain elusive, prompting urgent exploration of potential antivirals. In this study, a structure-based virtual screening approach was employed to evaluate 690 metabolites sourced from ten medicinal plants () for their antiviral activity against Nipah virus proteins.
View Article and Find Full Text PDFPhotosynthetica
August 2024
Capixaba Institute for Research, Technical Assistance and Rural Extension, BR 101 North, Km 151, P.O. Box 62, Linhares, Espírito Santo, Brazil.
This study investigated the effects of recurrent water deficit on drought tolerance traits in black pepper ( L.) 'Bragantina'. Plants were subjected to three cycles of water deficit followed by recovery periods.
View Article and Find Full Text PDFFront Microbiol
November 2024
Plant Disease Biology Lab, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India.
The devastating disease "quick wilt" or "foot rot" is caused by the oomycete Leonian and is affecting the economically significant spice crop black pepper ( L.). The details on the mechanism of interaction of with its host black pepper remain poorly understood, hindering efforts to enhance disease resistance.
View Article and Find Full Text PDFPlant Dis
November 2024
Huaihua University, Huaihua, Hunan, China;
AMB Express
November 2024
Department of Biotechnology, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
Anthracnose disease, caused by the Colletotrichum gloeosporioides species, affects vegetables, fruits, pulses, and cereals, leading to significant economic losses worldwide. Although many synthetic fungicides are used to control this pathogen, eco-friendly biological alternatives are gaining popularity. This study focuses on isolating and purifying chitinase ( Af Chi)from a marine bacterium and testing its antifungal efficacy against C.
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