Eradication of Xanthomonas campestris pv. translucens from Barley Seed with Dry Heat Treatments

Fourest, E.; Rehms, Lisa; Sands, David C.; Bjarko, M. E.; Lund, Ragnhild

doi:10.1094/pd-74-0816

Cited by 31 publications

(12 citation statements)

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“…Heat treatment at 80°C resulted in a significant reduction in germination over time for sample B2, but not for sample RS2. The survival rate of barley heated at 70 and 80°C in this trial is consistent with the results of Fourest et al (1990), but somewhat better than reported by Couture and Sutton (1980). Wheat samples with an initial germination of 90% or more were the less affected by thermotherapy.…”

Section: Seed Germinationsupporting

confidence: 92%

“…Differences in the required treatment time between wheat and barley may be due to the relationship between the initial level of F. graminearum and the time to eradication, as was demonstrated for Xanthomonas campestris pv. translucens on barley seed (Fourest et al 1990). There was little difference between the 5-and 7-day results of the agar plates for the samples heated at 60°C or above.…”

Section: Fungal Pathogensmentioning

confidence: 99%

See 1 more Smart Citation

Effect of dry heat treatment on seed-borneFusarium graminearumand other cereal pathogens

Clear¹,

Patrick²,

Wallis³

et al. 2002

Canadian Journal of Plant Pathology

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Section: Seed Germinationsupporting

confidence: 92%

Section: Fungal Pathogensmentioning

confidence: 99%

Effect of dry heat treatment on seed-borneFusarium graminearumand other cereal pathogens

Clear¹,

Patrick²,

Wallis³

et al. 2002

Canadian Journal of Plant Pathology

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“…Current management strategies to reduce the impact of BLS on wheat production include seed treatment with hot water or chemicals (11)(12)(13), and planting resistant cultivars (15). The use of antibiotics to control BLS is not practical due to costs and the risk of developing antibiotic resistance in bacterial populations (14).…”

Section: Discussionmentioning

confidence: 99%

“…This may be due to lack of effective management tools. Crop rotation, seed certification, seed treatments, bactéricides, and host resistance have been investigated in the past decades (7,9,11,13,15,18,26). Although these disease management tactics have shown some promise, an adequate control of BLS has not been provided for wheat producers.…”

Section: Resistance To Other Foliar Pathogensmentioning

confidence: 99%

Identification of New Sources of Resistance in Winter Wheat to Multiple Strains of Xanthomonas translucens pv. undulosa

et al. 2011

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Adhikari, T. B., Hansen, J. M., Gurung, S., and Bonman, J. M. 2011. Identification of new sources of resistance in winter wheat to multiple strains of Xanthomonas translucens pv. undulosa. Plant Dis. 95:582-588.Bacterial leaf streak (BLS), caused by Xanthomonas trans¡ucens pv. undulosa, has re-emerged as an important disease of wheat {Triticum aestivum) in the United States. Planting resistant varieties is the best approach to manage BLS in the absence of effective bactéricides. However, most of the wheat varieties currently grown in the Upper Midwest of the United States appeared to be susceptible to BLS. From the core subset of the USDA National Small Grain Collection (NSGC), a set of 605 winter wheat accessions of diverse origin and improvement status were initially inoculated with a virulent strain BLSW16 of X. translucens pv. undulosa from Casselton, ND on the flag leaf of each plant in a greenhouse. Disease reactions were assessed between 7 and 10 days after infiltration using a 0 to 6 rating scale, where <2.0 was considered resistant and >2.1 was considered susceptible. Resistance varied with geographic origin and was significantly {P < 0.05) more frequent in accessions from North America compared to accessions from northern, eastern, and southern Europe and from south-central Asia. About 8.3% of accessions tested were resistant, and accessions with an improvement status of "cultivar" were significantly more likely to be resistant than were accessions classified as either landraces or breeding lines. Forty-two of the accessions exhibiting resistance in response to the strain BLSW16 in the first screening test were retested utilizing each of the two additional strains (BLS Cr25 and BLS Lb74 of X. trans¡ucens pv. undu¡osa) collected from Carrington and Lisbon, respectively. Nonparametric data analysis revealed 35 accessions were resistant, one accession, PI 266860, was susceptible to both strains, and six accessions showed differential responses. The majority of the BLS-resistant accessions also were resistant to at least one other important wheat disease based on the Germplasm Resources Infonnation Network (GRIN) data. These results suggest that diverse and novel sources of resistance to BLS identified in this study can be utilized in winter wheat breeding programs.

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“…Outbreaks of the disease are sporadic and favoured by warm and moist conditions. Treatment of barley seed with dry heat (71-84 C, 11 days) reduced bacterial numbers to undetectable levels from an initial level of over 10 6 CFU/g (Fourest et al 1990). For a seed lot with a lower initial level, 4 days at 72 C was effective.…”

Section: Black Chaff Of Cerealsmentioning

confidence: 98%

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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Eradication of Xanthomonas campestris pv. translucens from Barley Seed with Dry Heat Treatments

Cited by 31 publications

References 0 publications

Effect of dry heat treatment on seed-borneFusarium graminearumand other cereal pathogens

Effect of dry heat treatment on seed-borneFusarium graminearumand other cereal pathogens

Identification of New Sources of Resistance in Winter Wheat to Multiple Strains of Xanthomonas translucens pv. undulosa

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

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