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Articles by Imran Ali Siddiqui
Total Records ( 5 ) for Imran Ali Siddiqui
  S. Shahid Shaukat and Imran Ali Siddiqui
  The allelopathic and antifungal potential of the root leachates of Lantana camara L., a tropical weed was evaluated under glasshouse conditions. Soil drench with full strength concentration caused marked suppression of two root-infecting fungi including Fusarium solani and Rhizoctonia solani. Whereas, a high concentration of the root leachate caused marked inhibition of germination and growth of mungbean, a low concentration (1:2 dilution) enhanced plant growth. When soil was added with urea as an extra source of nitrogen (N) to overcome the phytotoxic symptoms, the toxic effect was not alleviated, suggesting that allelopathic effect due to the root leachate of this weed was not associated with N depletion in the soil. When soil was applied with urea, previously amended with root leachate of L. camara, the efficacy in the control of two soil-borne root-infecting fungi was increased.
  Imran Ali Siddiqui , Amer-Zareen , S. Shahid Shaukat and M. Javed Zaki
  Efficacy of different species of rhizobia including, Rhizobium trifolii, R. phaseoli, R. meliloti, Bradyrhizobium japonicum and Bradyrhizobium sp., were tested in the control of Meloidogyne javanica, the root-knot nematode on Vigna mungo under laboratory, greenhouse and field conditions. Cell-free culture filtrates of the rhizobium species significantly reduced egg hatching and caused mortality of M. javanica larvae In vitro. In pot experiments and under field conditions, Bradyrhizobium sp., gave better biocontrol along with enhanced plant growth and nodulation.
  Amer-Zareen , Imran Ali Siddiqui and M. Javed Zaki
  A total of 28 species belonging to 16 genera of fungi parasitic on root-knot nematodes were isolated and identified. Aspergillus terreus, A. nidulans, A. tamarri and Fusarium anthophellum are appeared to be new report on root-knot nematode and not reported hitherto. Of the fungi isolated, Aspergillus flavus, A. fumigatus, A. niger, Aspergillus sp., Acremonium butyri, Alternaria alternata, Catenaria sp. Cephalosporium sp., Cladosporium cladosporoides, Cladosporium sp., Cunninghamella elegance, Curvularia lunata, Fusarium exosporium, Fusarium sp., Ulocladium atrum and a sterile fungus are new records on root-knot nematodes in Pakistan. Natural infestation of Paecilomyces lilacinus and Arthrobotrys sp. is also recorded first time from Pakistan.
  Imran Ali Siddiqui , Syed Ehteshamul-Haque , M. Javed Zaki and Abdul Ghaffar
  Pseudomonas aeruginosa, a plant growth-promoting rhizobacterium and Memnoniella echinata, a fungal antagonist used separately or in combination in soil amended with neem cake and/or chemical fertilizers significantly suppressed root infecting fungi viz., Macrophomina phaseolina, Fusarium solani and Rhizoctonia solani and the root-knot nematode Meloidogyne javanica in mungbean. Soil amendment increased biocontrol and growth promoting potential of P. aeruginosa and M. echinata.
  Fatima S. Mehdi , Imran Ali Siddiqui , Nasima Imam Ali and M. Afzal
  The fungal species of rhizosphere of Avicennia marina was studied and results were evaluated in terms of occurrence, distribution and dominance. Species of Aspergillus and Penecillium were found to be more dominent constituents of the rhizosphere mycoflora. The rhizospheres examined revealed the preponderance population of Deuteromycotina and Ascomycotina whereas Mastgomycotina were poorly represented. The results of the study lead us to the conclusion that the mangrove swamp, specially the rhizosphere is a potential habitat for fungal inhabitation. The rhizosphere soils were found to favour the establishment of the fungal community, irrespective of varying salinity levels, perhaps due to their pronounced rhizosphere effects.
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