Biotic Stress in Barley: Disease Problems and Solutions

Paulitz, T. C.; Steffenson, Brian J.

doi:10.1002/9780470958636.ch11

Cited by 26 publications

(19 citation statements)

References 224 publications

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“…It is cultivated at the highest arable mountaintops down to the seacoast and from the highest north/south latitudes to the tropics (Paulitz and Steffenson 2011). Developing countries account for about 18% (26 million tonnes) of total barley production and 25% (18.5 million hectares) of the total harvested area in the world.…”

Section: Barley Productionmentioning

confidence: 99%

“…Fusarium inoculum is ubiquitous, but has increased substantially in cereal fields due to the widespread adoption of minimum or conservation tillage that leaves more crop debris and therefore inoculum on the soil surface available for re-infection. Maize stalks, being large and more resistant to decay, provide the largest substrate and hence source of FHB inoculum (Paulitz and Steffenson 2011). With respect to the most common FHB pathogen F. graminearum and its ability to attack many cereal hosts, the encroachment of or rotation with maize crops will certainly result in higher disease severities and mycotoxin contamination of barley.…”

Section: Threats: Biotic Stresses (Pests and Diseases)mentioning

confidence: 99%

“…(2) ability of the pathogen to infect and survive on many grass hosts; (3) ability of the pathogen to survive on host residue, now dramatically increasing on-farm due to the increased use of minimum or no-till practices; and (4) effective control of fungal leaf spots (by fungicides or host resistance) that provide an open niche for bacterial leaf streak infection (Paulitz and Steffenson 2011). To minimize the impact of this disease, measures must be taken to produce clean seed, eliminate alternative hosts, and reduce infected residue in production fields.…”

Section: Threats: Biotic Stresses (Pests and Diseases)mentioning

confidence: 99%

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Crops that feed the world 4. Barley: a resilient crop? Strengths and weaknesses in the context of food security

et al. 2011

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Barley is cultivated both in highly productive agricultural systems and also in marginal and subsistence environments. Its distribution is worldwide and is of considerable economic importance for animal feed and alcohol production. The overall importance of barley as a human food is minor but there is much potential for new uses exploiting the health benefits of whole grain and betaglucans. The barley supply chains are complex and show added value at many stages. Germplasm resources for barley are considerable, with much potential for exploitation of its biodiversity available through the use of recently developed genomic and breeding tools. Consequently, substantial gains in crucial sustainability characteristics should be achievable in the future, together with increased understanding of the physiological basis of many agronomic traits, particularly water and nutrient use efficiency.

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Section: Barley Productionmentioning

confidence: 99%

Section: Threats: Biotic Stresses (Pests and Diseases)mentioning

confidence: 99%

Section: Threats: Biotic Stresses (Pests and Diseases)mentioning

confidence: 99%

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Crops that feed the world 4. Barley: a resilient crop? Strengths and weaknesses in the context of food security

et al. 2011

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“…The fungal disease leaf blotch or leaf scald, caused by the hemibiotrophic haploid fungus Rhynchosporium commune (formally R. secalis, Zaffarano et al 2011), is one of the most prevalent barley diseases worldwide, particularly in the cool and semi-humid barley growing regions (Zhan et al 2008). Yield losses attributed to this pathogen commonly range around 5-10%, though losses of up to 40% have been reported (Paulitz and Steffenson 2011). The fungus and its interaction with barley have been thoroughly reviewed by Zhan et al (2008) and are described in more detail in Thirugnanasambandam et al (2011).…”

Section: Introductionmentioning

confidence: 99%

Fine mapping of the Rrs1 resistance locus against scald in two large populations derived from Spanish barley landraces

et al. 2013

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In two Spanish barley landraces with outstanding resistance to scald, the Rrs1 Rh4 locus was fine mapped including all known markers used in previous studies and closely linked markers were developed. Scald, caused by Rhynchosporium commune, is one of the most prevalent barley diseases worldwide. A search for new resistance sources revealed that Spanish landrace-derived lines SBCC145 and SBCC154 showed outstanding resistance to scald. They were crossed to susceptible cultivar Beatrix to create large DH-mapping populations of 522 and 416 DH lines that were scored for disease resistance in the greenhouse using two R. commune isolates. To ascertain the pattern of resistance, parents and reference barley lines with known scald resistance were phenotyped with a panel of differential R. commune isolates. Subpopulations were genotyped with the Illumina GoldenGate 1,536 SNP Assay and a large QTL in the centromeric region of chromosome 3H, known to harbour several scald resistance genes and/or alleles, was found in both populations. Five SNP markers closest to the QTL were converted into CAPS markers. These CAPS markers, together with informative SSR markers used in other scald studies, confirmed the presence of the Rrs1 locus. The panel of differential scald isolates indicated that the allele carried by both donors was Rrs1 Rh4 . The genetic distance between Rrs1 and its flanking markers was 1.2 cM (11_0010) proximally and 0.9 cM (11_0823) distally, which corresponds to a distance of just below 9 Mbp. The number and nature of scald resistance genes on chromosome 3H are discussed. The effective Rrs1 allele found and the closely linked markers developed are already useful tools for molecular breeding programs and provide a good step towards the identification of candidate genes.

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“…Small cereal grains, such as barley, are greatly influenced by the plant disease Fusarium head blight (FHB), also known as scab (McMullen, Jones, & Gallenberg, 1997;Parry, Jenkinson, & McLeod, 1995;Paulitz & Steffenson, 2011). Many barley-associated Fusaria are plant Discolouration of kernels Production of gushing inducers pathogens causing devastating infections and thus lead to quality and yield reduction.…”

Section: Impacts Of Barley-associated Fungi On Malt Qualitymentioning

confidence: 99%

Toxigenic fungi and mycotoxins in the barley-to-beer chain

Laitila

2015

Brewing Microbiology

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Biotic Stress in Barley: Disease Problems and Solutions

Cited by 26 publications

References 224 publications

Crops that feed the world 4. Barley: a resilient crop? Strengths and weaknesses in the context of food security

Crops that feed the world 4. Barley: a resilient crop? Strengths and weaknesses in the context of food security

Fine mapping of the Rrs1 resistance locus against scald in two large populations derived from Spanish barley landraces

Toxigenic fungi and mycotoxins in the barley-to-beer chain

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