Note: Phenylalanine ammonia lyase activity in tomato seedlings and its relationship to bacterial canker disease resistance | Zendy

S. Umesha | Zendy

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Note: Phenylalanine ammonia lyase activity in tomato seedlings and its relationship to bacterial canker disease resistance

Author(s) -

S. Umesha

Publication year - 2006

Publication title -

phytoparasitica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.43

H-Index - 44

eISSN - 1876-7184

pISSN - 0334-2123

DOI - 10.1007/bf02981341

Subject(s) - biology , phenylalanine ammonia lyase , clavibacter michiganensis , inoculation , canker , horticulture , plant disease resistance , phenylalanine , genotype , enzyme , cultivar , botany , bacteria , microbiology and biotechnology , enzyme assay , biochemistry , amino acid , gene , pathogen , genetics

Phenylalanine ammonia lyase (PAL) activity was studied in different genotypes of tomato with varying degrees of resistance and susceptibility to bacterial canker disease after inoculation with Clavibacter michiganensis ssp. michiganensis. In resistant genotypes the enzyme activity increased significantly 21 h after bacterial inoculation, whereas in the susceptible genotypes the activity decreased. The increase or decrease in PAL activity correlated well with the degree of host resistance along with total phenol contents. The role of PAL in imparting resistance to tomato against bacterial canker disease is discussed. KEY WORDS: Phenylalanine ammonia lyase; Clavibacter michiganensis ssp. michiganensis; tomato; bacterial canker

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