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Phosphatidase activity in brassica juncea plants infected with isolates of macrophomina phaseolina and its role in pathogenesis



Phosphatidase activity in brassica juncea plants infected with isolates of macrophomina phaseolina and its role in pathogenesis



Bulletin of the Torrey Botanical Club 109(4): 508-512



Phosphatidase activity was studied in tissues of susceptible and resistant cultivars of B. juncea at 6, 12 and 18 days after inoculation with 8 different isolates of M. phaseolina markedly differing in their degree of virulence. In both the host cultivars phosphatidase activity of the inoculated tissue appeared to be parallel to the pathogenic abilities of the fungal isolates. Inoculated tissues of resistant cultivars usually showed very poor activity as compared to their susceptible counterparts. There was a general increase in activity on the 12th and 18th day in the case of the susceptible host, whereas in the resistant cultivar a sharp decline was recorded in the enzyme activity on the 12th day. The possible implication of this enzyme in the pathogenesis of Macrophomina stem and root rot of B. juncea were indicated.

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Accession: 006104353

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DOI: 10.2307/2996491


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