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Identifying potential novel resistance to the foliar disease 'Scald' (Rhynchosporium commune) in a population of Scottish Bere barley landrace (Hordeum vulgare L.)

Cope, Jonathan and Norton, Gareth J. and George, Timothy S. and Newton, Adrian C. (2021). Identifying potential novel resistance to the foliar disease 'Scald' (Rhynchosporium commune) in a population of Scottish Bere barley landrace (Hordeum vulgare L.). Journal of Plant Diseases and Protection. 128 :4 , 999-1012
[Research article]

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Abstract

Barley 'Scald' is an economically damaging fungal disease that is a global problem, causing significant yield and economical losses in the UK barley feed and malting industries. Presently, a limited number of Rhynchosporium resistance genes exist, but selective pressures on the fungi cause the demand for new sources of resistance. Landraces, such as the Scottish Bere barley, hold potential sources of resistance that can be utilised, with farmers providing anecdotal evidence of resistance in field populations of Bere. This study analysed 131 heritage cultivars and landrace lines, including 37 Bere lines, to screen for resistance using both detached leaf assays (DLAs) and field experiments. Results showed that Bere lines produced smaller, but more necrotic, lesions for the majority of isolates in the DLAs, as well as smaller scores when visually assessed in field conditions. Whilst the infection patterns of the lines differed between isolates and experimental conditions, three Bere lines were identified as consistently showing reduced levels of infection (45 A 23, 58 A 36 Eday, and 8-125). Using genome-wide association analysis, we were able to identify a number of genomic regions associated with reduced infection symptoms, four in regions associated with known resistance genes, but another four associated with new regions that contain promising candidate genes. Further analysis of these new regions and candidate genes should be undertaken to identify targets for future disease-resistance breeding.

Authors/Creators:Cope, Jonathan and Norton, Gareth J. and George, Timothy S. and Newton, Adrian C.
Title:Identifying potential novel resistance to the foliar disease 'Scald' (Rhynchosporium commune) in a population of Scottish Bere barley landrace (Hordeum vulgare L.)
Series Name/Journal:Journal of Plant Diseases and Protection
Year of publishing :2021
Volume:128
Number:4
Page range:999-1012
Number of Pages:14
Publisher:SPRINGER HEIDELBERG
ISSN:1861-3829
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Ecology
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Keywords:Barley landraces, Hordeum vulgare, Bere barley, Genetic diversity, Rhynchosporium commune, Barley leaf scald
URN:NBN:urn:nbn:se:slu:epsilon-p-112561
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-112561
Additional ID:
Type of IDID
DOI10.1007/s41348-021-00470-x
Web of Science (WoS)000655561000002
Scopus2-s2.0-85106716961
ID Code:28243
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Crop Production Ecology
Deposited By: SLUpub Connector
Deposited On:03 Jun 2022 14:27
Metadata Last Modified:03 Jun 2022 14:31

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