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Hordeum OR Barley QTL

Austin J Case, Sridhar Bhavani, Godwin Macharia, Zacharias Pretorius, Vicky Coetzee, Frederick Kloppers, Priyanka Tyagi, Gina Brown-Guedira, Brian J Steffenson
Key message Major stem rust resistance QTLs proposed to be Rpg2 from Hietpas-5 and Rpg3 from GAW-79 were identified in chromosomes 2H and 5H, respectively, and will enhance the diversity of stem rust resistance in barley improvement programs. Stem rust is a devastating disease of cereal crops worldwide. In barley (Hordeum vulgare ssp. vulgare), the disease is caused by two pathogens: Puccinia graminis f. sp. secalis (Pgs) and Puccinia graminis f. sp. tritici (Pgt). In North America, the stem rust resistance gene Rpg1 has protected barley from serious losses for more than 60 years; however, widely virulent Pgt races from Africa in the Ug99 group threaten the crop...
August 14, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Beata Myśków, Magdalena Góralska, Natalia Lenarczyk, Ilona Czyczyło-Mysza, Stefan Stojałowski
BACKGROUND: Rolling of leaves (RL) is a phenomenon commonly found in grasses. Morphology of the leaf is an important agronomic trait in field crops especially in rice; therefore, majority of the rice breeders are interested in RL. There are only few studies with respect to RL of wheat and barley; however, the information regarding the genetic base of RL with respect to the shape of leaf in rye is lacking. To the best of our knowledge, this is the first study on the localization of loci controlling RL on high density consensus genetic map of rye...
August 9, 2018: BMC Genetics
Feng-Ping Yuan, Qing-Dong Zeng, Jian-Hui Wu, Qi-Lin Wang, Zu-Jun Yang, Bang-Ping Liang, Zhen-Sheng Kang, Xin-Hong Chen, De-Jun Han
Stripe rust caused by Puccinia striiformis f. sp. tritici ( Pst ) is a devastating foliar disease that affects common wheat and barley throughout the world. The reasonable deployment of adult plant resistance (APR) wheat varieties is one of the best methods for controlling this disease. Wheat landraces are valuable resources for identifying the genes/QTLs responsible for disease resistance. Humai 15 is a Chinese spring wheat landrace and it has exhibited adequate levels of APR to the prevalent Pst races in field environments for many years...
2018: Frontiers in Plant Science
Ahmed Ibrahim, Matthew Harrison, Holger Meinke, Yun Fan, Peter Johnson, Meixue Zhou
Heading date (HD) of cereals is an important trait for adaptation to diverse environments and is critical for determining yield and quality and the number of genes and gene combinations that confer earliness in barley under short days is limited. In our study, a QTL for early flowering was identified from the cross between an Australian malting barley cultivar and a Chinese landrace. Four sets of near isogenic lines (NILs) were developed with a QTL located on chromosome 5H at the interval of 122.0-129.0 cM...
2018: PloS One
Kornelia Gudys, Justyna Guzy-Wrobelska, Agnieszka Janiak, Michał A Dziurka, Agnieszka Ostrowska, Katarzyna Hura, Barbara Jurczyk, Katarzyna Żmuda, Daria Grzybkowska, Joanna Śróbka, Wojciech Urban, Jolanta Biesaga-Koscielniak, Maria Filek, Janusz Koscielniak, Krzysztof Mikołajczak, Piotr Ogrodowicz, Karolina Krystkowiak, Anetta Kuczyńska, Paweł Krajewski, Iwona Szarejko
Drought is one of the most adverse abiotic factors limiting growth and productivity of crops. Among them is barley, ranked fourth cereal worldwide in terms of harvested acreage and production. Plants have evolved various mechanisms to cope with water deficit at different biological levels, but there is an enormous challenge to decipher genes responsible for particular complex phenotypic traits, in order to develop drought tolerant crops. This work presents a comprehensive approach for elucidation of molecular mechanisms of drought tolerance in barley at the seedling stage of development...
2018: Frontiers in Plant Science
Andriy Kochevenko, Yong Jiang, Christiane Seiler, Korana Surdonja, Sonja Kollers, Jochen Christoph Reif, Viktor Korzun, Andreas Graner
BACKGROUND: Barley (Hordeum vulgare) is an important crop cultivated across the world. Drought is a major abiotic factor compromising barley yield worldwide, therefore in modern spring barley cultivars superior seed and malting quality characteristics should be combined with reasonable level of drought tolerance. Previously we have identified a number of barley lines demonstrating the superior yield performance under drought conditions. The aim of this work was to perform a QTL analysis of malting quality traits in a doubled haploid (DH) mapping population of two elite barley lines that differ in their reaction pattern to drought stress...
June 4, 2018: BMC Plant Biology
Rajiv Sharma, Fulvia Draicchio, Hazel Bull, Paul Herzig, Andreas Maurer, Klaus Pillen, William T B Thomas, Andrew J Flavell
To explore wild barley as a source of useful alleles for yield improvement in breeding, we have carried out a genome-wide association scan using the nested association mapping population HEB-25, which contains 25 diverse exotic barley genomes superimposed on an ~70% genetic background of cultivated barley. A total of 1420 HEB-25 lines were trialled for nine yield-related grain traits for 2 years in Germany and Scotland, with varying N fertilizer application. The phenotypic data were related to genotype scores for 5398 gene-based single nucleotide polymorphism (SNP) markers...
July 18, 2018: Journal of Experimental Botany
Dorothee Wozny, Katharina Kramer, Iris Finkemeier, Ivan F Acosta, Maarten Koornneef
Genes controlling differences in seed longevity between 2 barley (Hordeum vulgare) accessions were identified by combining quantitative genetics "omics" technologies in near isogenic lines (NILs). The NILs were derived from crosses between the spring barley landraces L94 from Ethiopia and Cebada Capa from Argentina. A combined transcriptome and proteome analysis on mature, nonaged seeds of the 2 parental lines and the L94 NILs by RNA-sequencing and total seed proteomic profiling identified the UDP-glycosyltransferase MLOC_11661...
August 2018: Plant, Cell & Environment
Andrea Visioni, Sanjaya Gyawali, Rajan Selvakumar, Om P Gangwar, Pradeep S Shekhawat, Subhash C Bhardwaj, Ayed M Al-Abdallat, Zakaria Kehel, Ramesh P S Verma
Barley stripe rust is caused by Puccinia striiformis f.sp. hordei , (Psh), occurs worldwide, and is a major disease in South Asia. The aim of this work was to identify and estimate effects of loci underlying quantitative resistance to rust at seedling and adult plant stages. HI-AM panel of 261 barley genotypes consisting of released cultivars from North and South America, Europe, Australia, advanced breeding lines, and local landraces from ICARDA barley program were screened at seedling and adult plant stages for resistance to Psh...
2018: Frontiers in Plant Science
Jennifer Mae Lorang, Christina H Hagerty, Rian Lee, Phillip McClean, Thomas Wolpert
Cochliobolus victoria, the causal agent of Victoria blight, is pathogenic due to its production of a toxin called victorin. Victorin sensitivity in oats, barley, Brachypodium, and Arabidopsis has been associated with nucleotide-binding site leucine-rich repeat (NLR) genes, a class of genes known for conferring disease resistance. In this work we investigated the sensitivity of Phaseolus vulgaris to victorin. We found that victorin sensivity in Phaseolus vulgaris is a developmentally regulated, quantitative trait...
April 26, 2018: Molecular Plant-microbe Interactions: MPMI
Sébastien Bélanger, Stéphanie Paquet-Marceau, Juan E Díaz Lago, François Belzile
In barley, semi-dwarf varieties are attractive for their superior harvest index and lodging resistance, but many semi-dwarf barley genotypes suffer from poor spike emergence. We performed a genetic characterization of a semi-dwarf line (ND23049) that combines short stature, strong stiff culms, and adequate spike emergence. We developed a doubled haploid (DH) population derived by crossing ND23049 and the cultivar CLE253. A subset of 88 DH lines and parents were characterized for plant height in 2013 and 2014 and genotyped...
April 15, 2018: Genome Génome / Conseil National de Recherches Canada
C De La Fuente Canto, D I Kalogiros, M Ptashnyk, T S George, R Waugh, A G Bengough, J Russell, L X Dupuy
Discoveries on the genetics of resource acquisition efficiency are limited by the ability to measure plant roots in sufficient number and with adequate genotypic variability. This paper presents a root phenotyping study that explores ways to combine live imaging and computer algorithms for model-based extraction of root growth parameters. The study is based on a subset of barley Recombinant Chromosome Substitution Lines (RCSLs) and a combinatorial approach was designed for fast identification of the regions of the genome that contribute the most to variations in root system architecture (RSA)...
June 14, 2018: Journal of Theoretical Biology
Khaled M Hazzouri, Basel Khraiwesh, Khaled M A Amiri, Duke Pauli, Tom Blake, Mohammad Shahid, Sangeeta K Mullath, David Nelson, Alain L Mansour, Kourosh Salehi-Ashtiani, Michael Purugganan, Khaled Masmoudi
Sodium (Na+ ) accumulation in the cytosol will result in ion homeostasis imbalance and toxicity of transpiring leaves. Studies of salinity tolerance in the diploid wheat ancestor Triticum monococcum showed that HKT1;5 -like gene was a major gene in the QTL for salt tolerance, named Nax2 . In the present study, we were interested in investigating the molecular mechanisms underpinning the role of the HKT1;5 gene in salt tolerance in barley ( Hordeum vulgare ). A USDA mini-core collection of 2,671 barley lines, part of a field trial was screened for salinity tolerance, and a Genome Wide Association Study (GWAS) was performed...
2018: Frontiers in Plant Science
Cynara C T Romero, Jasper P Vermeulen, Anton Vels, Axel Himmelbach, Martin Mascher, Rients E Niks
Resistance factors against non-adapted powdery mildews were mapped in barley. Some QTLs seem effective only to non-adapted mildews, while others also play a role in defense against the adapted form. The durability and effectiveness of nonhost resistance suggests promising practical applications for crop breeding, relying upon elucidation of key aspects of this type of resistance. We investigated which genetic factors determine the nonhost status of barley (Hordeum vulgare L.) to powdery mildews (Blumeria graminis)...
May 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Thomas Vatter, Andreas Maurer, Dragan Perovic, Doris Kopahnke, Klaus Pillen, Frank Ordon
The biotrophic rust fungi Puccinia hordei and Puccinia striiformis are important barley pathogens with the potential to cause high yield losses through an epidemic spread. The identification of QTL conferring resistance to these pathogens is the basis for targeted breeding approaches aiming to improve stripe rust and leaf rust resistance of modern cultivars. Exploiting the allelic richness of wild barley accessions proved to be a valuable tool to broaden the genetic base of resistance of barley cultivars. In this study, SNP-based nested association mapping (NAM) was performed to map stripe rust and leaf rust resistance QTL in the barley NAM population HEB-25, comprising 1,420 lines derived from BC1S3 generation...
2018: PloS One
Lianne Merchuk-Ovnat, Roi Silberman, Efrat Laiba, Andreas Maurer, Klaus Pillen, Adi Faigenboim, Eyal Fridman
Increasing crop productivity under conditions of climate change requires the identification, selection, and utilization of novel alleles for breeding. In this study, we analysed the genotype and field phenotype of the barley HEB-25 multi-parent mapping population under well-watered and water-limited environments for two years. A genome-wide association study (GWAS) for genotype × environment interactions was performed for 10 traits including flowering time (heading time, HEA) and plant grain yield (PGY). Comparison of the GWAS for traits per se (i...
March 24, 2018: Journal of Experimental Botany
Paul Herzig, Andreas Maurer, Vera Draba, Rajiv Sharma, Fulvia Draicchio, Hazel Bull, Linda Milne, William T B Thomas, Andrew J Flavell, Klaus Pillen
Barley is cultivated more widely than the other major world crops because it adapts well to environmental constraints, such as drought, heat, and day length. To better understand the genetic control of local adaptation in barley, we studied development in the nested association mapping population HEB-25, derived from crossing 25 wild barley accessions with the cultivar 'Barke'. HEB-25 was cultivated in replicated field trials in Dundee (Scotland) and Halle (Germany), differing in regard to day length, precipitation, and temperature...
March 24, 2018: Journal of Experimental Botany
Ahmad M Alqudah, Helmy M Youssef, Andreas Graner, Thorsten Schnurbusch
GWAS analysis for leaf blade area (LA) revealed intriguing genomic regions associated with putatively novel QTL and known plant stature-related phytohormone and sugar-related genes. Despite long-standing studies in the morpho-physiological characters of leaf blade area (LA) in cereal crops, advanced genetic studies to explore its natural variation are lacking. The importance of modifying LA in improving cereal grain yield and the genes controlling leaf traits have been well studied in rice but not in temperate cereals...
April 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Stephanie Saade, Burcu Kutlu, Vera Draba, Karin Förster, Erika Schumann, Mark Tester, Klaus Pillen, Andreas Maurer
Leaf sheath hairiness is a morphological trait associated with various advantages, including tolerance to both abiotic and biotic stresses, thereby increasing yield. Understanding the genetic basis of this trait in barley can therefore improve the agronomic performance of this economically important crop. We scored leaf sheath hairiness in a two-year field trial in 1,420 BC1S3 lines from the wild barley nested association mapping (NAM) population HEB-25. Leaf sheath hairiness segregated in six out of 25 families with the reference parent Barke being glabrous...
2017: PloS One
Muhammad B Gill, Fanrong Zeng, Lana Shabala, Guoping Zhang, Yun Fan, Sergey Shabala, Meixue Zhou
Waterlogging and salinity are two major abiotic stresses that hamper crop production world-wide resulting in multibillion losses. Plant abiotic stress tolerance is conferred by many interrelated mechanisms. Amongst these, the cell's ability to maintain membrane potential (MP) is considered to be amongst the most crucial traits, a positive relationship between the ability of plants to maintain highly negative MP and its tolerance to both salinity and waterlogging stress. However, no attempts have been made to identify quantitative trait loci (QTL) conferring this trait...
2017: Frontiers in Plant Science
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