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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Plant Disease, 97 3: Under some environmental conditions, foliar symptoms may not be very conspicuous and the watermelon grower may not realize that there is a problem until fruit symptoms render the crop unmarketable. Initial symptoms of A. When the streaming fluid was streaked onto King’s medium B 3a slow-growing, gram-negative, nonfluorescent bacterium was identified from the whitish colonies that consistently developed on the medium.

Acidovorax citrulli (fruit blotch)

These conditions are common during the summer. Plant Disease, 89 Resistance of watermelon seedlings and fruit to the fruit blotch bacterium.

However, fermentation cannot be used for certain watermelon hybrids and other cucurbits as it can adversely affect seed germination Walcott, Subsp.citruli precautions must be taken to ensure that cross-contamination of seedlings does not occur in test procedures. The susceptibility of fruit appears to be related to rind colour.

Generate a print friendly version containing only the sections you need. International Journal of Systematic Bacteriology, 28 1: Apart from these methods, A.

The process involves incubation of seeds in fruit juice for h followed by rinsing and drying. There are no pictures available for this datasheet If you can supply pictures for this datasheet please contact: Control leaves infiltrated with distilled water remained symptomless. Plant Pathology Bulletin, 10 3: These two bacterial pathogens can be distinguished by the production of fluorescent pigments on King’s medium B agar.


Efeito de kasugamicina e oxicloreto de cobre no controle zubsp.citrulli mancha-aquosa do meloeiro. Plant Disease, 76 In host range studies, symptoms were produced accidovorax tomato, eggplant and pepper foliage, but not on fruit.

Bacterial fruit blotch of watermelon: Aacidovorax wild cucurbits and volunteer cucurbits near transplant houses and production fields. Plant Disease, 75 Colonies are convex, smooth to slightly granular, and beige to faintly yellow with a translucent marginal zone.

EPPO Global Database

More information about modern web browsers can be found at http: Effect of seed contamination level on final incidence of bacterial fruit blotch of direct-seeded watermelon. Pathogen identification of Hami melon bacterial fruit blotch. Plant Disease, 92 5: First report of bacterial fruit blotch of watermelon in Oklahoma.

In northern growing areas, fruit blotch affected fields should be planted subsequently with crops that utilize herbicides that will kill volunteer watermelons. For further confirmation, putative A. Identification of subsp.cirtulli fruit blotch of melons found in Yunnan Province. Acidovoraax fruit blotch caused by Acidovorax avenae subsp. Cells are straight to slightly curved rods that are 0.

Seed treatments with NaOCl at 50 o C for 20 min, peroxyacetic acid for 30 min and ACA at 50 o C for 20 min eradicated the pathogen, seed germination was negatively affected. Wall and Santos, aveenae Wall et al. Journal of Jilin Agricultural University, 26 3: Pathogen Transmission The outbreak of bacterial fruit blotch of watermelon in the USA appeared to be initiated by contaminated seed.


Journal of Yunnan Agricultural University, 28 2: Biology and Ecology Top of page The disease cycle in most host crops apparently begins with contaminated seed Latin and Hopkins, 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, Many seed treatments have been reported to reduce BFB seedling transmission.

In advanced stages of lesion development, the initial infection site may become necrotic. Occurrence of watermelon bacterial fruit blotch in Nagano prefecture. To improve the efficiency of seed health testing, immunomagnetic separation combined with polymerase chain reaction IMS-PCR was evaluated Walcott and Gitaitis, ; Walcott et al.

First report of bacterial fruit blotch on melon caused by Acidovorax citrulli in California. Either a water-soaked lesion will develop at the puncture site or the entire seedling will collapse and decay. IMS yielded a fold increase in recovery of A. Plant Disease, 79 8: Fermentation for hours plus treatment with HCl was most effective in eliminating seed transmission. However, these reports do not necessarily indicate detection of the pathogen in seeds.

Detection of the watermelon fruit blotch pathogen on seeds with the polymerase chain reaction. Cracks in the rind surface may occur, resulting in fruit rot.