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Articles by M. Kaur
Total Records ( 2 ) for M. Kaur
  M. Kaur and N.K. Aggarwal
  Parthenium hysterophorus is a weed of global significance causing severe economic, environmental, human and animal health problems in Asia, Africa, Australia and the Pacific. A field survey and the systematic sampling were made during two years (November 2012 to October 2014) in KUK campus and its surrounding area. During a series of extensive surveys for natural enemies of Parthenium hysterophorus, leaf spot diseases creating epiphytotics were regularly observed on P. hysterophorus. The organism was isolated from the affected parts of the Parthenium by following the standard isolation techniques using Potato Dextrose Agar (PDA) and Parthenium Dextrose Agar (PeDA) medium. Koch’s postulate was performed and found satisfactory for all the isolates and proved to be pathogenic to this weed. On the basis of cultural, morphological and molecular characteristics, these pathogens were identified as different strains of Alternaria macrospora. The literature survey indicates that Alternaria macrospora has never been reported on the Parthenium weed and it is the first report of occurrence of this pathogen causing leaf spot on Parthenium weed from the world. Further study will be conducted to develop mycoherbicide by using these fungal pathogens in combination or single.
  M. Kaur , N.K. Aggarwal and R. Dhiman
  Plants produce a diverse range of bioactive molecules, making them rich source of different types of medicines. In the present study, the in vitro antimicrobial activity of medicinal plant Parthenium hysterophorus, was evaluated by using chloroform, methanol, acetone, ethyl acetate, petroleum ether and distilled water. The extracts were tested against Escherichia coli, Pseudomonas aeruginosa, Candida albicans, Bacillus subtilis, Saccharomyces cerevisiae and Staphylococcus aureus by using agar well diffusion method. Ciprofloxacin and Amphotericin were used as standard antibiotics. Some of the solvent extracts of the plant showed the highest activity against some pathogenic microorganisms than standard antibiotics used. The findings provide support for the use of this plant in producing new bioactivity compounds having antimicrobial activity.
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