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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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First report of bacterial fruit blotch on melon caused by Acidovorax citrulli in California.

Thus, the bacterium must invade the fruit seven days, or more, before maturity, but the symptoms continue to develop as long as the fruit is attached to the plant. Much of the watermelon production in the USA is still from direct-seeded plants, but transplants are rapidly gaining in popularity.

Apart from subsp.xitrulli methods, A. Field spread of bacterial fruit blotch of watermelon.

Acidovorax avenae subsp. citrulli – Genome – Assembly – NCBI

Bacterial fruit blotch of watermelon. Canadian Journal of Plant Pathology, 31 2: This infection court is accessible for weeks after anthesis, and as fruits mature, wax becomes deposited over the stomata preventing further bacterial entry. Bacterial blotch of melons caused by strains of Acidovorax avenae subsp. In addition to subsp.ciitrulli rain, the bacterium can be spread by contact with farm workers, irrigation, and other cultivation equipment D.


Survival of the watermelon fruit blotch pathogen Acidovorax avenae subsp. Initial report on occurrence of watermelon bacterial fruit blotch in Heilongjiang Province. Seed Science and Technology, 34 1: Journal of Plant Pathology, 89 2: The bacterium was detected in the USA plant introduction collection several years before it appeared in commercial watermelon Webb and Goth, Careers In Plant Pathology.

The hypothetical exam question becomes reality. Bacterial fruit blotch of watermelon in Indiana.

EPPO Global Database

Risk of Introduction Top of page There are no known quarantine restrictions on A. Plant Disease Reporter, 63 6: First report of bacterial fruit blotch of watermelon caused by Acidovorax avenae subsp. Therefore, this new bacterium was named P. Symptomatic cotyledon, leaf, or rind tissue is triturated in sterile water. The conditions in a transplant house are highly conducive for BFB development Walcott, More information about modern web browsers can be found at http: Plant Disease, 86 4: The bacterium was phenotypically similar to Pseudomonas pseudoalcaligenes but differed in that it was pathogenic to watermelon, cantaloupe, cucumber and squash Schaad et al.

Because a single transplant house may supply plants avenxe several growers over a large geographical area, transplants can be the mechanism through which the bacterium is dispersed. Kawano T; Takahashi Y, Plant seeds that have been tested for the presence of the fruit blotch bacterium.

Distribution Maps of Plant Diseases, No. Efeito de kasugamicina e oxicloreto de cobre no controle da mancha-aquosa do meloeiro.


Watermelon fruits are most vulnerable to bacterial infection 2 to 3 weeks after anthesis Frankle et al. Plant Disease, 77 Symptoms began with small, necrotic, water-soaked spots that progressed to circular to irregularly shaped brown lesions, 5 to 10 mm in diameter, with chlorotic halos on leaves; some lesions started from the edge of leaves and later fused to form dried, necrotic margins.

Plant Disease, 86 Wet seed treatments for the control of bacterial fruit blotch of watermelon. When several references are cited, they may give conflicting information on the status.

Detection and Inspection Top of page Inspect young cucurbit seedlings for the typical water-soaked areas on the underside of cotyledons and the restricted lesions that turn dark brown and often extend along the length of the cotyledon midrib Webb and Goth, Irrigation with an overhead boom may result in splash dispersal of the bacteria throughout the greenhouse. Please consider upgrading your browser to the latest avdnae or installing a new browser.

This secondary spread in the transplant house can result in high numbers of infected seedlings reaching the field.