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Florian Leplat, Pai Rosager Pedas, Søren Kjærsgaard Rasmussen, Søren Husted
No abstract text is available yet for this article.
October 18, 2016: BMC Genomics
Joanna Majka, Maciej Majka, Michał Kwiatek, Halina Wiśniewska
In this paper, we highlight the affinity between the genomes of key representatives of the Pooideae subfamily, revealed at the chromosomal level by genomic in situ hybridization (GISH). The analyses were conducted using labeled probes from each species to hybridize with chromosomes of every species used in this study based on a "round robin" rule. As a result, the whole chromosomes or chromosome regions were distinguished or variable types of signals were visualized to prove the different levels of the relationships between genomes used in this study...
October 14, 2016: Journal of Applied Genetics
Jannatul Ferdous, Ryan Whitford, Martin Nguyen, Chris Brien, Peter Langridge, Penny J Tricker
Drought is one of the major abiotic stresses reducing crop yield. Since the discovery of plant microRNAs (miRNAs), considerable progress has been made in clarifying their role in plant responses to abiotic stresses, including drought. miR827 was previously reported to confer drought tolerance in transgenic Arabidopsis. We examined barley (Hordeum vulgare L. 'Golden Promise') plants over-expressing miR827 for plant performance under drought. Transgenic plants constitutively expressing CaMV-35S::Ath-miR827 and drought-inducible Zm-Rab17::Hv-miR827 were phenotyped by non-destructive imaging for growth and whole plant water use efficiency (WUEwp)...
October 11, 2016: Functional & Integrative Genomics
Chun-Mei Wang, Zeng-Run Xia, Guo-Qiang Wu, Hui-Jun Yuan, Xin-Rui Wang, Jin-Hua Li, Fu-Ping Tian, Qian Zhang, Xin-Qiang Zhu, Jiong-Jie He, Tanweer Kumar, Xiao-Li Wang, Jin-Lin Zhang
Hordeum brevisubulatum, called as wild barley, is a useful monocotyledonous halophyte for soil improvement in northern China. Although previously studied, its main salt tolerance mechanism remained controversial. The current work showed that shoot Na(+) concentration was increased rapidly with stress time and significantly higher than in wheat during 0-168h of 100mM NaCl treatment. Similar results were also found under 25 and 50mM NaCl treatments. Even K(+) was increased from 0.01 to 50mM in the cultural solution, no significant effect was found on tissue Na(+) concentrations...
November 2016: Plant Science: An International Journal of Experimental Plant Biology
Florian Leplat, Pai Rosager Pedas, Søren Kjærsgaard Rasmussen, Søren Husted
BACKGROUND: Manganese (Mn) has several essential functions in plants, including a role as cofactor in the oxygen evolving complex (OEC) of photosystem II (PSII). Manganese deficiency is a major plant nutritional disorder in winter cereals resulting in significant yield reductions and winter kill in more severe cases. Among the winter cereals, genotypes of winter barley are known to differ considerably in tolerance to Mn deficiency, but the genes controlling the Mn deficiency trait remains elusive...
October 4, 2016: BMC Genomics
Olesya Yu Shoeva, Hans-Peter Mock, Tatjana V Kukoeva, Andreas Börner, Elena K Khlestkina
Barley grain at maturity can have yellow, purple, blue, and black pigmentations which are suggested to play a protective role under stress conditions. The first three types of the colors are caused by phenolic compounds flavonoids; the last one is caused by phytomelanins, oxidized and polymerized phenolic compounds. Although the genetic basis of the flavonoid biosynthesis pathway in barley has been thoroughly studied, there is no data yet on its regulation in purple and black barley grains. In the current study, genetic model of Hordeum vulgare 'Bowman' near-isogenic lines (NILs) was used to investigate the regulation of the flavonoid biosynthesis in white, purple, and black barley grains...
2016: PloS One
Bao-Jian Guo, Jun Wang, Shen Lin, Zheng Tian, Kai Zhou, Hai-Ye Luan, Chao Lyu, Xin-Zhong Zhang, Ru-Gen Xu
ASYMMETRIC LEAVES2/LATERAL ORGAN BOUNDARIES (AS2/LOB) genes are a family of plant specific transcription factors, which play an important role in the regulation of plant lateral organ development and metabolism. However, a genome-wide analysis of the AS2/LOB gene family is still not available for barley. In the present study, 24 AS2-like (ASL)/LOB domain (LBD) genes were identified based on the barley (Hordeum vulgare L.) genome sequence. A phylogenetic tree of ASL/LBD proteins from barley, Arabidopsis, maize, and rice was constructed...
2016: Journal of Zhejiang University. Science. B
Leigh Mickelson-Young, Emily Wear, Patrick Mulvaney, Tae-Jin Lee, Eric S Szymanski, George Allen, Linda Hanley-Bowdoin, William Thompson
The duration of the DNA synthesis stage (S phase) of the cell cycle is fundamental in our understanding of cell cycle kinetics, cell proliferation, and DNA replication timing programs. Most S-phase duration estimates that exist for plants are based on indirect measurements. We present a method for directly estimating S-phase duration by pulse-labeling root tips or actively dividing suspension cells with the halogenated thymidine analog 5-ethynl-2'-deoxyuridine (EdU) and analyzing the time course of replication with bivariate flow cytometry...
October 3, 2016: Journal of Experimental Botany
Shahin Noeparvar, Behrooz Darbani, Birgitte Tauris, Søren Husted, Daniel P Persson, Rebecca F Mills, Lorraine E William, Eva Vincze, Inger Holme, Søren Borg
Cereals are a major source of dietary energy and protein but are nutritionally poor in micronutrients. Zinc (Zn) biofortification of staple crops has been proposed as a promising strategy to combat the global challenge of human Zn-deficiency. The aim of this study was to improve the Zn content in the edible part of the barley (Hordeum vulgare L.) grain by enhancing Zn translocation into the developing seeds. We demonstrate that the barley plasma membrane P-type ATPase Zn transporter, HvHMA2 is an efficient candidate for mineral biofortification of crops...
September 29, 2016: Plant Biotechnology Journal
Robert Biczak, Barbara Pawłowska, Arkadiusz Telesiński, Wojciech Ciesielski
Increasing amounts of two ILs: 1-butyl-3-methylimidazolium hexafluorophosphate [BMIM][PF6] and 1-butyl-2,3-dimethylimidazolium hexafluorophosphate [BMMIM][PF6], were introduced to soil in which spring barley (Hordeum vulgare) and common radish (Raphanus sativus L. subvar. radicula Pers.) seedlings were cultivated, in order to evaluate the phytotoxicity of ionic liquids with imidazolium cation with two or three alkyl substituents attached. The results of the study i.e. the inhibition of the length of plants and their roots, as well as the yield of fresh weight of plants, clearly showed that differences in the number of substituents did not affect the toxicity of these ILs...
December 2016: Chemosphere
Cristiano Soares, Simão Branco-Neves, Alexandra de Sousa, Ruth Pereira, Fernanda Fidalgo
The present work aimed to assess the ecotoxicological relevance of acetaminophen (AC) and nickel oxide nanomaterial (nano-NiO) to barley plants. Combining standard procedures and several biochemical determinations, a global approach regarding the biological effects of these two contaminants was performed. After 14 days of growth, the exposure of barley to increased concentrations (0, 87.8, 131.3, 197.5, 296.5, 444.4, 666.6, and 1000 mg kg(-1)) of each contaminant resulted in a marked decrease in biomass production and biometric parameters...
December 2016: Chemosphere
Katelyn E Mason, Jonathan K Hilmer, Walid S Maaty, Benjamin D Reeves, Paul A Grieco, Brian Bothner, Andreas M Fischer
Senescence is the last developmental phase of plant tissues, organs and, in the case of monocarpic senescence, entire plants. In monocarpic crops such as barley, it leads to massive remobilization of nitrogen and other nutrients to developing seeds. To further investigate this process, a proteomic comparison of flag leaves of near-isogenic late- and early-senescing barley germplasm was performed. Protein samples at 14 and 21 days past anthesis were analyzed using both two-dimensional gel-based and label-free quantitative mass spectrometry-based ('shotgun') proteomic techniques...
September 14, 2016: Plant Physiology and Biochemistry: PPB
Siegfried Jahnke, Johanna Roussel, Thomas Hombach, Johannes Kochs, Andreas Fischbach, Gregor Huber, Hanno Scharr
The enormous diversity of seed traits is an intriguing feature and critical for the overwhelming success of higher plants. In particular seed mass is generally regarded to be key for seedling development but is mostly approximated by using scanning methods delivering only 2D data, often termed "seed size". However, 3D traits such as volume or mass of single seeds are very rarely determined in routine measurements. Here we introduce a device named phenoSeeder which enables handling and phenotyping of individual seeds of very different sizes...
September 23, 2016: Plant Physiology
Ammar Elakhdar, Mohamed Abd El-Sattar, Khairy Amer, Assma Rady, Toshihiro Kumamaru
Association mapping is becoming an important tool for identifying alleles and loci responsible for dissecting highly complex traits in barley. This study describes the population structure and marker-trait association using general linear model (GLM) analysis on a site of 60 barley genotypes, evaluated in six salinity environments. Ninety-eight SSR and SNP alleles were employed for the construction of a framework genetic map. The genetic structure analysis of the collection turned out to consist of two major sub-populations, mainly comprising hulled and naked types...
September 19, 2016: Comptes Rendus Biologies
Rim Mzid, Farhat Chibani, Rayda Ben Ayed, Mohsen Hanana, Joelle Breidi, Rabih Kabalan, Samih El-Hajj, Hassan Machlab, Ahmed Rebai, Lamis Chalak
No abstract text is available yet for this article.
September 2016: Journal of Genetics
Anna D Dimitrova, Oleg Georgiev, Kiril Mishev, Stefan Tzvetkov, Evgueni D Ananiev, Luchezar Karagyozov
Extensive cytosine methylation is characteristic of plant rDNA. Evidence exists, however, that the active rRNA genes are less methylated. In this work we report on the mapping of unmethylated CCGG sites in Hordeum vulgare rDNA repeats by digestion with methylation sensitive restriction enzyme HpaII and indirect end-labeling of the generated fragments. For mapping we used genomic DNA from barley deletion line with a single NOR on chromosome 5H. This NOR is more active in order to compensate for the missing NOR 6H...
September 17, 2016: Journal of Plant Physiology
Alwyn Williams, Lokeshwaran Manoharan, Nicholas P Rosenstock, Pål Axel Olsson, Katarina Hedlund
Agricultural fertilization significantly affects arbuscular mycorrhizal fungal (AMF) community composition. However, the functional implications of community shifts are unknown, limiting understanding of the role of AMF in agriculture. We assessed AMF community composition at four sites managed under the same nitrogen (N) and phosphorus (P) fertilizer regimes for 55 yr. We also established a glasshouse experiment with the same soils to investigate AMF-barley (Hordeum vulgare) nutrient exchange, using carbon ((13) C) and (33) P isotopic labelling...
September 19, 2016: New Phytologist
Christina Mark, Kinga Zór, Arto Heiskanen, Martin Dufva, Jenny Emnéus, Christine Finnie
Redox regulation is important for numerous processes in plant cells including abiotic stress, pathogen defence, tissue development, seed germination and programmed cell death. However, there are few methods allowing redox homeostasis to be addressed in whole plant cells, providing insight into the intact in vivo environment. An electrochemical redox assay that applies the menadione-ferricyanide double mediator is used to assess changes in the intracellular and extracellular redox environment in living aleurone layers of barley (Hordeum vulgare cv...
December 15, 2016: Analytical Biochemistry
Hong Zhou, Shihang Liu, Yujiao Liu, Yaxi Liu, Jing You, Mei Deng, Jian Ma, Guangdeng Chen, Yuming Wei, Chunji Liu, Youliang Zheng
BACKGROUND: Kernel length is an important target trait in barley (Hordeum vulgare L.) breeding programs. However, the number of known quantitative trait loci (QTLs) controlling kernel length is limited. In the present study, we aimed to identify major QTLs for kernel length, as well as putative candidate genes that might influence kernel length in wild barley. RESULTS: A recombinant inbred line (RIL) population derived from the barley cultivar Baudin (H. vulgare ssp...
2016: BMC Genetics
Dezhi Wu, Naoki Yamaji, Miki Yamane, Miho Kashino-Fujii, Kazuhiro Sato, Jian Feng Ma
The Natural Resistance Associated Macrophage Protein (Nramp) represents a transporter family for metal ions in all organisms. Here, we functionally characterized a member of Nramp family in barley (Hordeum vulgare), HvNramp5. This member showed different expression patterns, transport substrate specificity and cellular localization from its close homolog in rice (Oryza sativa), OsNramp5; although HvNramp5 was also localized to the plasma membrane. HvNramp5 was mainly expressed in the roots and its expression was not affected by Cd and deficiency of Zn, Cu and Mn, but slightly up-regulated by Fe deficiency...
September 12, 2016: Plant Physiology
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