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Hordeum OR Barley QTL

Calum Watt, Gaofeng Zhou, Lee-Anne McFawn, Kenneth James Chalmers, Chengdao Li
A major grain length QTL on chromosome 5H was fine mapped from 180.5 to 1.7 Mb. Quantitative trait loci (QTLs) mapping has been used extensively in barley to detect QTLs that underlie complex traits such as grain size. In the present study, we utilised 312 double haploid lines derived from a cross between two Australian malting varieties, Vlamingh and Buloke, to dissect the genetic control of a number of grain size characteristics. Digital image analysis was used to measure grain size characteristics including length, width, thickness and plumpness which are important traits influencing barley yield and grain physical quality...
November 21, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Junmei Wang, Jianming Yang, Wei Hua, Xiaojian Wu, Jinghuan Zhu, Yi Shang, Meixue Zhou
Pasting properties are important characteristics of barley starch from a processing standpoint. Many studies reported the close relationship between pasting properties and malting quality, especially malt extract. However, most conclusions were derived from the correlation between pasting properties and malting quality using a set of cultivars or breeding lines. In this study, a doubled haploid population of 150 lines from a cross between a Japanese malting barley and a Chinese feed barley was grown in four different environments (two sites × two years)...
November 12, 2018: International Journal of Molecular Sciences
Lidija Begović, Ivan Abičić, Alojzije Lalić, Hrvoje Lepeduš, Vera Cesar, Dunja Leljak-Levanić
Since lignin greatly affects stem strength, which is an important agronomical trait, understanding the relationship between lodging resistance and lignin synthesis is important in barley breeding and selection processes. The aim of the study was to reveal the connection between physiological aspects of lignin synthesis and genetic background of barley cultivars with different lodging phenotype. Three barley cultivars Astor, Scarlett and Jaran were compared by measuring lignin, cellulose and total soluble phenolics content, phenylalanine ammonia-lyase activity (PAL) and expression of cinnamoyl-CoA reductase (CCR) and cinnamyl-alcohol dehydrogenase (CAD) in three lower internodes at flowering and grain filling stage...
December 2018: Plant Physiology and Biochemistry: PPB
Samar G Thabet, Yasser S Moursi, Mohamed A Karam, Andreas Graner, Ahmad M Alqudah
Drought is one of the harshest abiotic stresses hindering seed germination, plant growth, and crop productivity. A high rate and uniformity of germination under stressful conditions are vital for crop establishment and growth; thus, for productivity. A better understanding of the genetic architecture of seed germination under drought stress is a prerequisite for further increasing yield potential. Barley is considered one of the most abiotic stresses-tolerant cereals. Elucidating the drought tolerance of barley during seed germination would indeed pave the way towards improving the performance of all cereals...
2018: PloS One
Yunfeng Jiang, Ahsan Habib, Zhi Zheng, Meixue Zhou, Yuming Wei, You-Liang Zheng, Chunji Liu
This study demonstrates the feasibility of developing co-segregating markers and identifying candidate genes for Fusarium crown rot resistance in barley based on the generation and exploitation of a near-isogenic line-derived large population. Fusarium crown rot (FCR) is a chronic and severe disease in cereals in semi-arid regions worldwide. Previous studies showed that FCR assessment could be affected by many factors including plant height, growth rate as well as drought stress. Thus, accurate assessment, which is essential for detailed mapping of any locus conferring FCR resistance, is difficult...
October 16, 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Yadong Huang, Matthew Haas, Shane Heinen, Brian J Steffenson, Kevin P Smith, Gary J Muehlbauer
Fusarium head blight (FHB) is an important fungal disease affecting the yield and quality of barley and other small grains. Developing and deploying resistant barley cultivars is an essential component of an integrated strategy for reducing the adverse effects of FHB. Genetic mapping studies have revealed that resistance to FHB and the accumulation of pathogen-produced mycotoxins are controlled by many quantitative trait loci (QTL) with minor effects and are highly influenced by plant morphological traits and environmental conditions...
2018: Frontiers in Plant Science
Sanjiv Gupta, Elysia Vassos, Beata Sznajder, Rebecca Fox, Kelvin H P Khoo, Robert Loughman, Kenneth J Chalmers, Diane E Mather
Adult plant resistance against plant pathogens is of interest as a means to achieve durable resistance. Prior to this research, the barley lines CLE210 (from Uruguay) and Denar (from the Czech Republic) had been reported to exhibit adult-plant resistance against powdery mildew. Here, populations of doubled haploid lines from crosses of these lines with the susceptible cultivar Baudin were evaluated for powdery mildew resistance in field experiments. Using linkage maps constructed from genotyping-by-sequencing (GBS) data, it was determined that differences in resistance were largely attributable to a region on the long arm of chromosome 5H (5HL)...
2018: Molecular Breeding: New Strategies in Plant Improvement
Ming Wang, Martin Schäfer, Dapeng Li, Rayko Halitschke, Chuanfu Dong, Erica McGale, Christian Paetz, Yuanyuan Song, Suhua Li, Junfu Dong, Sven Heiling, Karin Groten, Philipp Franken, Michael Bitterlich, Maria J Harrison, Uta Paszkowski, Ian T Baldwin
High-through-put (HTP) screening for functional arbuscular mycorrhizal fungi (AMF)-associations is challenging because roots must be excavated and colonization evaluated by transcript analysis or microscopy. Here we show that specific leaf-metabolites provide broadly applicable accurate proxies of these associations, suitable for HTP-screens. With a combination of untargeted and targeted metabolomics, we show that shoot accumulations of hydroxy- and carboxyblumenol C-glucosides mirror root AMF-colonization in Nicotiana attenuata plants...
August 28, 2018: ELife
Mark E Looseley, Lucie L Griffe, Bianca Büttner, Kathryn M Wright, Jill Middlefell-Williams, Hazel Bull, Paul D Shaw, Malcolm Macaulay, Allan Booth, Günther Schweizer, Joanne R Russell, Robbie Waugh, William T B Thomas, Anna Avrova
Association analyses of resistance to Rhynchosporium commune in a collection of European spring barley germplasm detected 17 significant resistance quantitative trait loci. The most significant association was confirmed as Rrs1. Rhynchosporium commune is a fungal pathogen of barley which causes a highly destructive and economically important disease known as rhynchosporium. Genome-wide association mapping was used to investigate the genetic control of host resistance to R. commune in a collection of predominantly European spring barley accessions...
December 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Zhenqi Su, Sujuan Jin, Dadong Zhang, Guihua Bai
Functional markers were developed based on the critical sequence deletion of TaHRC in the Fhb1 region and validated to be diagnostic in a worldwide wheat collection. Wheat Fusarium head blight (FHB) is a devastating disease in wheat and barley worldwide. Growing FHB-resistant cultivars is an effective strategy to minimize FHB damage in wheat production. Fhb1 is a quantitative trait locus for FHB resistance with the largest effect on disease severity identified to date. With this study, we developed diagnostic DNA markers for Fhb1 by comparing the genomic sequences in Fhb1 region between near-isogenic lines contrasting in Fhb1 alleles and phenotypic effects of the markers...
November 2018: TAG. Theoretical and Applied Genetics. Theoretische und Angewandte Genetik
Shumaila Muzammil, Asis Shrestha, Said Dadshani, Klaus Pillen, Shahid Siddique, Jens Léon, Ali Ahmad Naz
Water scarcity is a critical threat to global crop production. Here, we used the natural diversity of barley ( Hordeum vulgare ) to dissect the genetic control of proline (Pro) mediated drought stress adaptation. Genetic mapping and positional cloning of a major drought-inducible quantitative trait locus ( QPro.S42-1H ) revealed unique allelic variation in pyrroline-5-carboxylate synthase ( P5cs1 ) between the cultivated cultivar Scarlett (ssp. vulgare ) and the wild barley accession ISR42-8 (ssp. spontaneum )...
October 2018: Plant Physiology
Austin J Case, Sridhar Bhavani, Godwin Macharia, Zacharias Pretorius, Vicky Coetzee, Frederik 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...
October 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
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