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Hordeum AND Drought

Mitra Jabbari, Barat Ali Fakheri, Reza Aghnoum, Nafiseh Mahdi Nezhad, Reza Ataei
Association analysis based on linkage disequilibrium has become a common and powerful approach for detection of QTLs underlying complex agronomic traits including drought tolerance. To determine marker/trait association, 148 modern European spring barley cultivars were evaluated under drought stress. Associations of morphological traits with AFLP/SSR markers were investigated based on the mixed linear model using the TASSEL3.0. Population structure was estimated using various methods including Bayesian clustering model by STRUCTURE software, PCoA analysis, NJ dendrogram and Hierarchical Clustering...
2018: PloS One
Weihuai Pan, Jinqiu Shen, Zhongzhong Zheng, Xu Yan, Jianxin Shou, Wenxiang Wang, Lixi Jiang, Jianwei Pan
BACKGROUND: The calcineurin B-like protein (CBL) and CBL-interacting protein kinase (CIPK) signaling system plays a key regulatory role in plant stress signaling. The roles of plant-specific CIPKs, essential for CBL-CIPK functions, in the response to various abiotic stresses have been extensively studied so far. However, until now, the possible roles of the CIPKs in the plant response to heavy metal toxicities are largely unknown. RESULTS: In this study, we used bioinformatic and molecular strategies to isolate 12 HsCIPK genes in Tibetan Plateau annual wild barley (Hordeum spontaneum C...
September 12, 2018: Rice
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
Eyal Galkin, Ahan Dalal, Alex Evenko, Eyal Fridman, Iddo Kan, Rony Wallach, Menachem Moshelion
Regulation of the rate of transpiration is an important part of plants' adaptation to uncertain environments. Stomatal closure is the most common response to severe drought. By closing their stomata, plants reduce transpiration to better their odds of survival under dry conditions. Under mild to moderate drought conditions, there are several possible transpiration patterns that balance the risk of lost productivity with the risk of water loss. Here, we hypothesize that plant ecotypes that have evolved in environments characterized by unstable patterns of precipitation will display a wider range of patterns of transpiration regulation along with other quantitative physiological traits (QPTs), compared to ecotypes from less variable environments...
August 7, 2018: Physiologia Plantarum
Tino Kreszies, Nandhini Shellakkutti, Alina Osthoff, Peng Yu, Jutta A Baldauf, Viktoria V Zeisler-Diehl, Kosala Ranathunge, Frank Hochholdinger, Lukas Schreiber
Barley (Hordeum vulgare) is more drought tolerant than other cereals, thus making it an excellent model for the study of the chemical, transcriptomic and physiological effects of water deficit. Roots are the first organ to sense soil water deficit. Therefore, we studied the response of barley seminal roots to different water potentials induced by polyethylene glycol (PEG) 8000. We investigated changes in anatomical parameters by histochemistry and microscopy, quantitative and qualitative changes in suberin composition by analytical chemistry, transcript changes by RNA-sequencing (RNA-Seq), and the radial water and solute movement of roots using a root pressure probe...
July 28, 2018: New Phytologist
Hülya Torun
Greater crop losses can result from simultaneous exposure to a combination of drought, heat and salinity in the field. Salicylic acid (SA), a phenolic phytohormone, can affect a range of physiological and biochemical processes in plants and significantly impacts their resistance to these abiotic stresses. Despite numerous reports involving the positive effects of SA by applying each abiotic stress separately, the mechanism of SA-mediated adaptation to combined stresses remains elusive. This study, via a time-course analysis, investigated the role of SA on the roots of hulled and hulless (naked) barley (Hordeum vulgare L...
July 9, 2018: Physiologia Plantarum
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
Mihwa Yi, Will Q Hendricks, Joshua Kaste, Nikki D Charlton, Padmaja Nagabhyru, Daniel G Panaccione, Carolyn A Young
Epichloë species (Clavicipitaceae, Ascomycota) are endophytic symbionts of many cool-season grasses. Many interactions between Epichloë and their host grasses contribute to plant growth promotion, protection from many pathogens and insect pests, and tolerance to drought stress. Resistance to insect herbivores by endophytes associated with Hordeum species has been previously shown to vary depending on the endophyte-grass-insect combination. We explored the genetic and chemotypic diversity of endophytes present in wild Hordeum species...
May 2018: Mycologia
Eswarayya Ramireddy, Seyed A Hosseini, Kai Eggert, Sabine Gillandt, Heike Gnad, Nicolaus von Wirén, Thomas Schmülling
Root size and architecture are important crop plant traits, as they determine access to water and soil nutrients. The plant hormone cytokinin is a negative regulator of root growth and branching. Here, we generated transgenic barley ( Hordeum vulgare ) plants with an enlarged root system by enhancing cytokinin degradation in roots to explore the potential of cytokinin modulations in improving root functions. This was achieved through root-specific expression of a CYTOKININ OXIDASE/DEHYDROGENASE gene. Enhanced biomass allocation to roots did not penalize shoot growth or seed yield, indicating that these plants were not source limited...
July 2018: Plant Physiology
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
Rania Djemal, Isabelle Mila, Mondher Bouzayen, Julien Pirrello, Habib Khoudi
Barley (Hordeum vulgare L.) is the fourth major cereal crop and shows high adaptive capabilities to diverse environments. Thus, it might represent a potential reservoir of novel genes to improve abiotic stress tolerance. In this study, a novel AP2/ERF transcription factor gene designated as HvSHN1 was isolated from barley. Protein sequence analysis showed that the HvSHN1 protein contained a nuclear localization signal and the conserved AP2/ERF domain. Phylogenetic analysis showed that HvSHN1 belongs to the group Va protein in the ERF subfamily which contains the Arabidopsis genes (SHN1, 2 and 3) and the wheat gene TdSHN1 with which it has 94...
September 2018: Journal of Plant Physiology
Ricardo Iván Alcalá-Briseño, Ryo Okada, Favio Herrera, Rodrigo A Valverde
Cluster bean (Cyamopsis tetragonoloba), also called guar, is a drought-tolerant annual legume. We conducted investigations to characterize a large dsRNA (~13-14 kbp) detected in a symptomless cluster bean genotype. The dsRNA was gel-purified and used for Illumina MiSeq sequencing. Reads were assembled, and BLASTx search results showed sequence similarity with viruses classified within the family Endornaviridae. The complete sequence of the putative endornavirus consisted of 12,895 nt and contained an open reading frame which coded for a polyprotein of 4,207 aa with conserved domains for methyltransferase, helicase, and RNA-dependent RNA polymerase...
August 2018: Archives of Virology
Deepesh R Bista, Scott A Heckathorn, Dileepa M Jayawardena, Sasmita Mishra, Jennifer K Boldt
Climate change will increase drought in many regions of the world. Besides decreasing productivity, drought also decreases the concentration (%) of nitrogen (N) and phosphorous (P) in plants. We investigated if decreases in nutrient status during drought are correlated with decreases in levels of nutrient-uptake proteins in roots, which has not been quantified. Drought-sensitive ( Hordeum vulgare , Zea mays ) and -tolerant grasses ( Andropogon gerardii ) were harvested at mid and late drought, when we measured biomass, plant %N and P, root N- and P-uptake rates, and concentrations of major nutrient-uptake proteins in roots (NRT1 for NO₃, AMT1 for NH₄, and PHT1 for P)...
March 30, 2018: Plants (Basel, Switzerland)
Sameh Dbira, Mohamad Al Hassan, Pietro Gramazio, Ali Ferchichi, Oscar Vicente, Jaime Prohens, Monica Boscaiu
Due to its high tolerance to abiotic stress, barley ( Hordeum vulgare ) is cultivated in many arid areas of the world. In the present study, we evaluate the tolerance to water stress (drought) in nine accessions of "Ardhaoui" barley landraces from different regions of Tunisia. The genetic diversity of the accessions is evaluated with six SSR markers. Seedlings from the nine accessions are subjected to water stress by completely stopping irrigation for three weeks. A high genetic diversity is detected among the nine accessions, with no relationships between genetic distance and geographical or ecogeographical zone...
March 8, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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
Damian Gruszka, Anna Janeczko, Michal Dziurka, Ewa Pociecha, Jozsef Fodor
Drought is one of the most adverse stresses that affect plant growth and yield. Disturbances in metabolic activity resulting from drought cause overproduction of reactive oxygen species. It is postulated that brassinosteroids (BRs) regulate plant tolerance to the stress conditions, but the underlying mechanisms remain largely unknown. An involvement of endogenous BRs in regulation of the antioxidant homeostasis is not fully clarified either. Therefore, the aim of this study was to elucidate the role of endogenous BRs in regulation of non-enzymatic antioxidants in barley (Hordeum vulgare) under control and drought conditions...
June 2018: Physiologia Plantarum
Ahmed Ashoub, Niels Müller, José M Jiménez-Gómez, Wolfgang Brüggemann
Under field conditions, drought and heat stress typically happen simultaneously and their negative impact on the agricultural production is expected to increase worldwide under the climate change scenario. In this study, we performed RNA-sequencing analysis on leaves of wild barley (Hordeum spontaneum) originated from the northern coastal region of Egypt following individual drought acclimation (DA) and heat shock (HS) treatments and their combination (CS, combined stresses) to distinguish the unique and shared differentially expressed genes (DEG)...
May 2018: Physiologia Plantarum
A M Al-Abdallat, A Karadsheh, N I Hadadd, M W Akash, S Ceccarelli, M Baum, M Hasan, A Jighly, J M Abu Elenein
BACKGROUND: Barley (Hordeum vulgare L.) is a major cereal crop, which is cultivated under variable environmental conditions and abiotic stresses in marginal areas around the globe. In this study, we evaluated 150 Jordanian landraces obtained from ICARDA Gene Bank and four local checks for yield and yield components related-traits in two locations across Jordan for three growing seasons under rainfed conditions. The study aims to identify superior Jordanian barley genotypes under dry conditions, to understand the genotype × environment (G × E) interactions, to analyze stability parameters and to identify markers associated with yield and yield components under rainfed conditions...
November 2, 2017: BMC Plant Biology
Nora Honsdorf, Timothy J March, Klaus Pillen
Drought is a major abiotic stress impeding the yield of cereal crops globally. Particularly in Mediterranean environments, water becomes a limiting factor during the reproductive developmental stage, causing yield losses. The wild progenitor of cultivated barley Hordeum vulgare ssp spontaneum (Hsp) is a potentially useful source of drought tolerance alleles. Wild barley introgression lines like the S42IL library may facilitate the introduction of favorable exotic alleles into breeding material. The complete set of 83 S42ILs was genotyped with the barley 9k iSelect platform in order to complete genetic information obtained in previous studies...
2017: PloS One
Junjun Liang, Xin Chen, Guangbing Deng, Zhifen Pan, Haili Zhang, Qiao Li, Kaijun Yang, Hai Long, Maoqun Yu
BACKGROUND: The harsh environment on the Qinghai-Tibetan Plateau gives Tibetan hulless barley (Hordeum vulgare var. nudum) great ability to resist adversities such as drought, salinity, and low temperature, and makes it a good subject for the analysis of drought tolerance mechanism. To elucidate the specific gene networks and pathways that contribute to its drought tolerance, and for identifying new candidate genes for breeding purposes, we performed a transcriptomic analysis using two accessions of Tibetan hulless barley, namely Z772 (drought-tolerant) and Z013 (drought-sensitive)...
October 11, 2017: BMC Genomics
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