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Halo blight seems to thrive when the temperatures are cooler. The optimal temperature for Pseudomonas Syringae to thrive is 20-23 °C. Moist environments also allow the spread of this disease. The pathogen enters the plant through wounds or stomata and hydathodes during periods of high relative humidity or free moisture.
Pseudomonas syringae is a rod-shaped, Gram-negative bacterium with polar flagella. As a plant pathogen , it can infect a wide range of species, and exists as over 50 different pathovars , [ 2 ] all of which are available to researchers from international culture collections such as the NCPPB , ICMP , and others.
Pseudomonas syringae pv glycinea should be monitored carefully in seed production fields as it is seed borne and can affect seed quality. [2] A study conducted by Stefani et al. in 1998 found that seeds with contamination levels ranging from 0.5 to 20% did not lead to any significant yield loss when grown in warm and dry regions. [3]
Pseudomonas is a genus of Gram-negative bacteria belonging to the family Pseudomonadaceae in the class Gammaproteobacteria.The 313 members of the genus [2] [3] demonstrate a great deal of metabolic diversity and consequently are able to colonize a wide range of niches. [4]
Pseudomonas syringae pv. Aesculi is a bacterium that causes bleeding canker of horse chestnut. The pathogen overwinters in the soil and can survive in the soil for about a year. [2] It is spread by water, rain, and tools that were used on the infected tree. [3] It causes lesions on the bark of the tree that can be near the base of the trunk or ...
Ice-minus bacteria is a common name given to a variant of the common bacterium Pseudomonas syringae (P. syringae).This strain of P. syringae lacks the ability to produce a certain surface protein, usually found on wild-type P. syringae.
Hypersensitive response (HR) is a mechanism used by plants to prevent the spread of infection by microbial pathogens.HR is characterized by the rapid death of cells in the local region surrounding an infection and it serves to restrict the growth and spread of pathogens to other parts of the plant.
Several pathovars of Pseudomonas syringae have been sequenced, including pathovar tomato DC3000 (2003), pathovar syringae B728a (2005), and pathovar phaseolica 1448A (2005). [ 3 ] Distinguishing characteristics