Project description:We hypothesized that the genome segments of cultivated barley should show certain similarity with its ancestral wild barley. Instead of whole genome sequences, we employed RNA-Seq to investigated the genomic origin of modern cultivated barley using some representative wild barley genotypes from the Near East and Tibet, and representative world-wide selections of cultivated barley.
Project description:Waterlogging is a major abiotic stress causing oxygen depletion and carbon dioxide accumulation in the rhizosphere. Barley is more susceptible to waterlogging stress than other cereals. To gain a better understanding of the effect of waterlogging stress in barley, we carried out a genome-wide gene expression analysis in roots of Yerong and Deder2 barley genotypes under waterlogging and control (well-watered) conditions by RNA-Sequencing, using Illumina HiSeq™ 4000 platform.
Project description:In the present study, we investigated the transcriptome features during hulless barley grain development. Using Illumina paired-end RNA-Sequencing, we generated two data sets of the developing grain transcriptomes from two hulless barley landraces.
Project description:NILs containing five parental lines, three wild barley genotypes ssp. spontaneum: HID 4 (A), Iraq; HID 64 (B), Turkey; and HID 369 (C), Israel, one ssp. agriocrithon: HID 382(D)) and cv. Morex (ssp. vulgare, USA). Purpose: Variant calling to identifie markers associated with a awn length QTL on the distal part of chromosome 7HL
Project description:Hordeum vulgare is one of the first domesticated grains in the world and it has been reported that variations in the light environment have a substantial effect on barley plant development and biological processes. High-throughput RNA-Seq study was performed to investigate the complex transcriptome network required for photomorphogenesis in barley. Seedlings were grown in dark and light conditions and three biological replicates were sampled from each condition. Six libraries from poly-A rich mRNA fraction were subjected to 51bp single-end RNA-seq sequencing.
Project description:To investigate the salt and waterlogging mechanism of barley, we chose salt and waterlogging sensitive and tolerant varieties as subjects. We then performed gene expression profiling analysis using data obtained from RNA-seq of two varieties at two three points.
Project description:Gene expression in plastids of higher plants is dependent on two different transcription machineries, a plastid-encoded bacterial-type RNA polymerase (PEP) and a nuclear-encoded phage-type RNA polymerase (NEP), which recognize distinct types of promoters. The division of labor between PEP and NEP during plastid development and in mature chloroplasts is unclear due to a lack of comprehensive information on promoter usage. Here we present a thorough investigation into the distribution of PEP and NEP promoters within the plastid genome of barley (Hordeum vulgare L). Using a novel differential RNA sequencing approach, which discriminates between primary and processed transcripts, we obtained a genome-wide map of transcription start sites in plastids of mature first leaves. PEP-lacking plastids of the albostrians mutant allowed for the unambiguous identifications of NEP promoters. We observed that the chloroplast genome contains many more promoters than genes. According to our data, most genes (including genes coding for photosynthesis proteins) have both PEP and NEP promoters. We also detected numerous transcription start sites within operons indicating transcriptional uncoupling of genes in polycistronic gene clusters. Moreover, we mapped many transcription start sites in intergenic regions, as well as opposite to annotated genes demonstrating the existence of numerous non-coding RNA candidates. dRNA-seq analysis of total RNA from green and white plastids of the barley mutant line albostrians
Project description:Purpose: The goal of this study was to investigate the mechanisms involved in the initiation and development of crown-roots (CRs) in barley and to estimate the role of cytokinins (CKs) in this process. Method: stranded libraries were obtained from RNA extracted from the stem base of 1 day-after-germination (DAG) and 10DAG-seedlings of wild-type (WT) and AtCKX-overexpressing barley lines (OE-CKX). OE-CKX lines have a reduced content of endogenous CKs and are characterized by a higher number of CRs. Libraries were deep sequenced on Illumina HighSeq platform. Each sample was investigated in three independent biological replicates. Results: Using a data analysis workflow optimized for barley, we identified more than 4000 transcripts differentially expressed in the stem base of 1DAG and 10DAG-seedlings. Expression as determined by RNA-seq was validated by real-time PCR. Our data were compared to the transcriptomic profiling obtained from rice and we were able to identify genes potentially involved in the initiation/development of CRs in barley. Also the use of the transgenic line with altered endogenous CK content allowed us to conclude about the role of CKs in the process. Conclusions: Our study represents the first analysis aiming to understand the initiation and development of CRs in barley.