Acidovorax citrulli ZJU (b-proteobacteria) genome assembly Acidovorax avenae subsp. citrulli from Institute of Biotechnology [GCA_ Bacterial fruit blotch is caused by Acidovorax avenae subsp. citrulli. The disease was first detected in Florida in and was subsequently detected in South. Acidovorax citrulli is the causal agent of bacterial fruit blotch and seedling blight Synomyms: Acidovorax avenae subsp. citrulli, Pseudomonas.

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However, these reports do not necessarily indicate detection of the pathogen in seeds.

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Longevity of the pathogen decreased with increasing storage temperature. Chemical control of bacterial fruit blotch of watermelon. Citron Citrullus lanatus var. Colonies are convex, smooth to slightly granular, and beige to faintly yellow with a translucent marginal zone.

Fruit blotch was prevalent in Georgia in and acidvoorax especially widespread incausing losses in thousands of hectares distributed over at least 10 states. Bacterial blotch acidovorrax melons caused by strains of Acidovorax avenae subsp. Alternative hosts can also serve as the source of inoculum into cucurbit fields.

These aspects may have implications on bacterial survival in seed and efficiency of pathogen detection by seed health testing. Fermentation of freshly harvested seed in watermelon fruit juice is a common practice routinely employed in commercial seed production. Alternative hosts can also serve as the source of inoculum in cucurbit fields.


Copper-containing fungicides reduce the spread of bacterial fruit blotch of watermelon in the greenhouse.

Acidovorax citrulli (fruit blotch)

International Journal of Systematic Bacteriology, 28 1: Using immunomagnetic separation and PCR, A. These infected wild cucurbits and volunteer crop cucurbits may be important overseasoning hosts for the bacterium that helps to perpetuate the disease in an area Latin and Hopkins, acixovorax There is zero tolerance for contaminated seed and any infested seed lot is rejected.

The lesions in honeydew are usually mm in diameter. First report of bacterial fruit blotch of watermelon caused by Acidovorax avenae subsp.

Decontaminate irrigation or mechanical equipment before moving it from an infested field to a noninfested field. acidovoeax

Acidovorax citrulli – Wikipedia

The American Phytopathological Society, St. Seeds subsp.citruloi infected fruits may become buried in the soil where they may serve as an inoculum for subsequent crops. Nomura T; Shirakawa T, Plant Disease, 76 5: European and Mediterranean Plant Protection Organization.

Spread of bacterial fruit blotch of watermelon in the greenhouse. Occurrence of a bacterial watermelon fruit blotch in Florida. The role of bacterial motility in watermelon blossom colonization acisovorax seed infestation by Acidovorax avenae subsp citrulli, subsp.citrulll causal agent of bacterial fruit blotch.

Watermelon, cantaloupe and honeydew melons appear the most susceptible, with both foliar symptoms and blotch symptoms on the fruit Isakeit et al. First report of bacterial fruit blotch on melon caused by Acidovorax citrulli in California. Symptomatic cotyledon, leaf, or rind tissue is triturated in sterile water.


While fruit infection is initiated at anthesis, fruit symptoms do not develop until harvest maturity. Pathogen identification of bacterial fruit blotch of watermelon in Fujian.

In addition, recently, it was reported that blossom or acifovorax inoculation resulted primarily in bacterial localization in the seed embryo, whereas pericarp inoculation resulted in bacterial subsp.citrullu under the seed coat Dutta et al. Natural infection of citronmelon with Acidovorax avenae subsp. Incidence There are very few reports of the incidence of A. Although bactericide treatment reduced disease incidence, it did not eradicate the pathogen. Standard greenhouse sanitation practices should preclude perennation of the pathogen associated with plastic trays used for watermelon seedling production.

This approach was necessary because watermelon seed extracts contain compounds that inhibit PCR, yielding false-negative results Walcott and Gitaitis, Watermelon fruits are most vulnerable to bacterial infection 2 to 3 weeks after anthesis Frankle et al.

Volunteer watermelon seedlings from previous crops should be destroyed immediately to eliminate potential sources of the fruit blotch bacterium. Initial subsp.cjtrulli on occurrence of watermelon bacterial fruit blotch in Heilongjiang Province. In a recent study, Dutta et al.