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Articles by Imran Ali Siddiqui
Total Records ( 5 ) for Imran Ali Siddiqui
  Nasima Imam Ali , Imran Ali Siddiqui , M. Javed and Maqsood Ali Ansari
  Twenty isolates of Pseudomonas sp., were tested for the control of soilborne root-infecting fungi like Macrophomina phaseolina, Fusarium solani and Rhizoctonia solani under laboratory and greenhouse conditions. In dual culture plate assay, strain 78 inhibited all the test fungi. Other Pseudomonas sp., failed to check the radial growth of M. phaseolina whereas isolates 51 and 82 significantly inhibited radial growth of F. solani and R. solani. Three isolates of Pseudomonas sp., (51, 78 and 82) when used as seed dressing or as soil drench showed substantial reduction in root-rot infection caused by M. phaseolina, F. solani and R. solani in mungbean. Strain 78 was found to be most effective in the control of root-infecting fungi. Of the root-infecting fungi, R. solani was most susceptible to Pseudomonas sp.
  S. Shahid Shaukat , Imran Ali Siddiqui , Zarina Ali and Maria Hamid
  The investigation focuses on competitive interactions between individuals of the perennial shrub Ziziphus nummularia and the annual herb Rhychosia minima with the aid of nearest-neighbour analysis in a sub-tropical desert region. Both intraspecific and interspecific competitive interactions were detected between nearest-neighbouring pairs. The cover as well as reproductive potential of R. minima were significantly reduced when it established in the close vicinity of Z. nummularia.
  Husan- Bano , Imran Ali Siddiqui , Waseemud-din Ahmed and Syed Ehteshamul-Haque
  This study was conducted to test the effect of Tagetes patula and Commicarppus boissieri on egg hatching of Meloidogyne javanica. Crude extract of these plants demonstrated toxic effect inhibit larval hatch to a varying degree and comparison of the results showed that C. boissieri possess a high nematicidal activity as compared to T. patula. On the other hand the flowers of T. patula have more nematicidal components as compared to the leaves and roots. C. boissieri and crude extract of flower of T. patula at 1mg/ml resulted in 32.81 and 32.53 percent permanent inhibition in egg hatching respectively.
  Fatima S. Mehdi , Imran Ali Siddiqui , Assia Sajjad and Muhammad Afzal
  Rhizophora mucronata (mangrove) used alone or in combination with Paecilomyces lilacinus significantly suppressed root infection caused by Macrophomina phaseolina, Fusarium solani and Rhizoctonia solani the root-infecting fungi and Meloidogyne javanica, the root-knot nematode in tomato. An R. mucronata-P. lilacinus treatment also improved plant growth. Organic amendments and P. lilacinus used together showed better results in the control of root-rot and root-knot disease complex as compared to their separate use.
  Imran Ali Siddiqui , Amer- Zareen and S. Shahid Shaukat
  Cytotoxic activity of six fungi namely Aspergillus niger. A. terreus, A. nidulans, Trichocierma harnatum, Fusarium pallicioroseam and Alterrierla alternate was tested using Brine shrimp bioassay. Pure culture filtrates of A. niger and F. pallidoroseum caused 100 percent mortality of Brine shrimp larvae within 24 h while rest of the filtrates caused >30% mortality. Boiling the filtrates retained their cytotoxicity suggesting that the active compounds were thermostable. Water-soluble fraction of A. niger was much more cytotoxic (LC50 31 μg/ml) compared to ethyl acetate LC50 = 663 μg/ml) and hexane extract (LC50 = 981 μg/ml). These results are discussed with respect to their pharmacological utility.
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