Bacterial Fruit Blotch of Watermelon in Indiana

Latin, Richard; Rane, K. K.

doi:10.1094/pd-74-0331b

Cited by 52 publications

(31 citation statements)

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“…citrulli was first recovered from watermelon foliage at the USDA plant introduction station, Griffin, GA in 1965 (Webb and Goth, 1965; Schaad et al., 1978); however, in 1989 a highly aggressive strain was recovered from outbreaks in commercial watermelons in Florida (Somodi et al., 1991). Subsequently, numerous costly BFB outbreaks occurred throughout south‐eastern and mid‐western USA between 1989 and 1994 (Latin and Rane, 1990; Jacobs et al., 1992; Black et al., 1994).…”

Section: Introductionmentioning

confidence: 99%

Differences in Pathogenicity between two Genetically Distinct Groups of Acidovorax avenae subsp. citrulli on Cucurbit Hosts

Walcott¹,

Fessehaie²,

Castro³

2004

Journal of Phytopathology

110

148

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Using DNA fingerprinting by pulse-field gel electrophoresis and repetitive extragenic pallindromic (REP)-polymerase chain reaction (PCR), two distinct groups were confirmed among 64 Acidovorax avenae subsp. citrulli strains collected from a range of cucurbitaceous hosts in the USA, China, Taiwan, Thailand, Canada, Australia, Brazil and Israel. Eighty-two percent of the group I strains were recovered from non-watermelon hosts and the subspecies type strain was the only member of this group that utilized l-leucine as a sole carbon source. On the contrary, 94% of the group II strains were recovered from watermelon and 96% of them utilized l-leucine. Two-week-old watermelon cv. Crimson sweet, cantaloupe cv. Athena, pumpkin cv. Lumina and squash cv. Early yellow crookneck seedlings were susceptible to A. avenae subsp. citrulli strains representing each group with the exception of the subspecies type strain. Overall, seedlings of watermelon cv. Crimson Sweet were most susceptible to A. avenae subsp. citrulli infection followed by cantaloupe, pumpkin and squash. Group II strains were more aggressive watermelon than on other hosts. On the contrary, group I strains were moderately aggressive on all cucurbit hosts tested.

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Section: Introductionmentioning

confidence: 99%

Differences in Pathogenicity between two Genetically Distinct Groups of Acidovorax avenae subsp. citrulli on Cucurbit Hosts

Walcott¹,

Fessehaie²,

Castro³

2004

Journal of Phytopathology

110

148

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“…Since the disease (33) and pathogen (23) were first described in seedlings of watermelon in 1965 and 1978, respectively, the causal agent has been identified as a new organism, Pseudomonas pseudoalcaligenes subsp. Within 3 years, BFB emerged as a major disease in production areas across the United States (10), including Florida (26), Indiana (14), and Delaware (5). citrulli (34).…”

mentioning

confidence: 99%

Multilocus Sequence Typing Reveals Two Evolutionary Lineages of Acidovorax avenae subsp. citrulli

Feng¹,

Schuenzel²,

Li³

et al. 2009

Phytopathology®

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Acidovorax avenae subsp. citrulli, causal agent of bacterial fruit blotch, has caused considerable damage to the watermelon and melon industry in China and the United States. Understanding the emergence and spread of this pathogen is important for controlling the disease. To build a fingerprinting database for reliable identification and tracking of strains of A. avenae subsp. citrulli, a multilocus sequence typing (MLST) scheme was developed using seven conserved loci. The study included 8 original strains from the 1978 description of A. avenae subsp. citrulli, 51 from China, and 34 from worldwide collections. Two major clonal complexes (CCs), CC1 and CC2, were identified within A. avenae subsp. citrulli; 48 strains typed as CC1 and 45 as CC2. All eight original 1978 strains isolated from watermelon and melon grouped in CC1. CC2 strains were predominant in the worldwide collection and all but five were isolated from watermelon. In China, a major seed producer for melon and watermelon, the predominant strains were CC1 and were found nearly equally on melon and watermelon.

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“…Bacterial blotch of cucurbits is caused by Acidovorax citrulli, and can result in total crop loss in water melon crops (Latin and Hopkins 1995). Rane and Latin (1992) obtained 80 % (naturally infested seed) and 96 % (laboratory infested seed) reductions in seed transmission with hot water treatment (50 C, 20 min).…”

Section: Bacterial Blotch Of Cucurbitsmentioning

confidence: 99%

Non-chemical Seed Treatment in the Control of Seed-Borne Pathogens

Koch¹,

Roberts²

2014

Global Perspectives on the Health of Seeds and Plant Propagation Material

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Non-chemical seed treatments include physical treatments, microbial treatments and treatments with other agents of natural origin like plant powders or extracts. Physical treatments with hot water, aerated steam, or dry heat have successfully been applied to a range of crops against a range of target pathogens and are in commercial use primarily for vegetable seeds. They can be very effective but need to be optimised on a per seed lot basis.Microbial seed treatments may control not only seed-borne pathogens but also provide some protection against pathogenic soil-borne inoculum. However, research on the use of micro-organisms as seed treatments has been limited, and there are only a few examples of commercial use. The latter is also true for botanical seed treatments, despite many reports of bactericidal and fungicidal effects of compounds from plants. The reason may be a lack of research on the one hand but mainly commercial constraints like development and registration costs in relation to market size.The current chapter gives an overview of approaches that have been taken to utilize the above-described non-chemical methods for control of important seedborne pathogens of vegetables and small grain cereals. The examples treated include bacterial (black rot of brassicas, pea bacterial blight, bacterial blotch of cucurbits, black chaff of cereals), fungal (Alternaria diseases of carrot, black leg of brassicas, common bunt of wheat, Fusarium seedling diseases of small grain cereals, the loose smuts of barley and wheat, fungal diseases of rice and sorghum) and important viral diseases.

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Bacterial Fruit Blotch of Watermelon in Indiana

Cited by 52 publications

References 0 publications

Differences in Pathogenicity between two Genetically Distinct Groups of Acidovorax avenae subsp. citrulli on Cucurbit Hosts

Differences in Pathogenicity between two Genetically Distinct Groups of Acidovorax avenae subsp. citrulli on Cucurbit Hosts

Multilocus Sequence Typing Reveals Two Evolutionary Lineages of Acidovorax avenae subsp. citrulli

Non-chemical Seed Treatment in the Control of Seed-Borne Pathogens

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