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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.
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 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 348 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]
The oral microbiota consists of all the microorganisms that exist in the mouth. It is the second largest of the human body and made of various bacteria, viruses, fungi and protozoa. [ 14 ] These organisms play an important role in oral and overall health.
First, pseudomonas viridiflava infects the kiwifruit vine buds before flowering during the spring, when warmer weather comes around. The warmer weather has been indicated in one study of disease incidence being at its highest point between 10 and 12 °C. [6] This temperature promotes flowering and is the ideal time for bacteria to attack the plant.
More than 800 species of bacteria colonize oral mucus, 1,300 species are found in the gingival crevice, and nearly 1,000 species comprise dental plaque. The mouth is a rich environment for hundreds of species of bacteria since saliva is mostly water and plenty of nutrients pass through the mouth each day.
Pseudomonas amygdali pv. morsprunorum causes disease on cherries and plums. Only certain strains of this pathovar belong to this phylogenetic group, whereas the other are classified in genomospecies 3.