pectobacterium carotovorum is one of the most important bacterial pathogens of potato in the world.the expression of numerous genes including those involved in the production of virulence determinants in this bacterium are regulated by quorum sensing (qs). the signal molecules involved in qs in p. carotovorum belong to the group of n-acyl homoserine lactones (ahls). recently, several soil bacte...

Over a 30-year period, it has become apparent that a diversity of bacterial species commonly control expression of gene circuits in a population-dependent manner via a regulatory mechanism known as quorum sensing (QS). In QS, small diffusible molecules called autoinducers mediate the ability to monitor the size of a bacterial population [1-3]. Autoinducers produced by bacteria diffuse out and a...

Plants have developed general and specific defense mechanisms for protection against various enemies. Among the general defenses, induced resistance has distinct characteristics, such as broad-spectrum resistance and long-lasting effectiveness. This study evaluated over 500 specific chemical compounds derived from native Korean plant species to determine whether they triggered induced resistanc...

L-Asparaginase shows antileukemic activity and is generally administered in the body in combination with other anticancer drugs like pyrimidine derivatives. In the present study, L-asparaginase was purified from a bacteria Erwinia carotovora and the effect of a dihydropyrimidine derivative (1-amino-6-methyl-4-phenyl-2-thioxo, 1,2,3,4-tetrahydropyrimidine-5-carboxylic acid methyl ester) was stud...

Carrot is a rich source of nutrients. The carrot contains carotene and lycopene, which gives bright color to the roots. The quality of the carrots was assessed based on the carotene, lycopene and other biochemical constituents like sugars, starch and protein. To study the effect of various isolates of the Erwinia carotovora var. carotovora on the above biochemical constituents, the pathogens we...

1. The distribution of phosphatidylethanolamine, the major lipid of Erwinia carotovora, was investigated in intact bacteria, spheroplasts and outer- and inner-membrane preparations, with the amino-group reagent 2,4,6-trinitrobenzenesulphonic acid. Only 4% was found on the external surface of the outer membrane with 30% on the internal surface, whereas the inner membrane had 27 and 38% on its e...