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The complete mitochondrial genome of Tibetan hulless barley.

ABSTRACT: Hulless barley (Hordeum vulgar L. var. nudum) is one of the staple foods for Tibetans and an important livestock feed in the Tibetan Plateau. We report the complete mitochondrial genome of Tibetan hulless barely. The complete mitochondrial genome size is 416,675?bp. Hulless barely mitochondrial genome encode 34 protein-coding genes, 19 tRNA genes and three rRNA genes. The mitochondrial genome has 50 forward and palindrome repeats totally. Nucleotide sequence of coding region takes over 13.60%, GC content is 44.33%. The maximum-likelihood (ML) phylogenetic tree based on 11 protein-coding genes common to seven plant mitochondrial genomes using Arabidopsis thaliana as out-group support that hulless barely is close to Triticum species.

SUBMITTER: Wang YL

PROVIDER: S-EPMC7800387 | biostudies-literature | 2016 Jul

REPOSITORIES: biostudies-literature

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The complete mitochondrial genome of Tibetan hulless barley.

Wang Yu Lin YL Wei Ze Xiu ZX Xu Qi Jun QJ Zeng Xing Quan XQ Yuan Hong Jun HJ Tang Ya Wei YW Tashi Nyima N

Mitochondrial DNA. Part B, Resources 20160706 1

Hulless barley (Hordeum vulgar L. var. nudum) is one of the staple foods for Tibetans and an important livestock feed in the Tibetan Plateau. We report the complete mitochondrial genome of Tibetan hulless barely. The complete mitochondrial genome size is 416,675 bp. Hulless barely mitochondrial genome encode 34 protein-coding genes, 19 tRNA genes and three rRNA genes. The mitochondrial genome has 50 forward and palindrome repeats totally. Nucleotide sequence of coding region ...[more]

PMID: 33490399

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Project description:Nitrogen (N) deprivation or excess can lead to dramatic phenotype change, disrupt important biological processes, and ultimately limit plant productivity. To explore genes in Tibetan hulless barley responsive to varied N stress, we utilized a comparative transcriptomics method to investigate gene expression patterns under three nitrate treatments. The transcriptome of the control (optimal-nitrate, ON) sample was compared with that of free-nitrate (FN), low-nitrate (LN), and high-nitrate (HN) treatment samples, identifying 2428, 1274, and 1861 genes, respectively, that exhibited significant differences in transcript abundance. Among these, 9 genes encoding ribulose bisphosphate carboxylases exhibited up-regulated expression under varied N stress. We further compared FN vs. ON and LN vs. ON to investigate the impact of stress degree on gene expression. With the aggravation of stress, more genes were differentially expressed and thus possibly involved in the response to nitrogen deficiency. Cluster and functional enrichment analysis indicated that the differentially expressed genes (DEGs) in FN were highly enriched in response to stress, defense response, and gene expression regulation. Comprehensive comparison analysis further suggested that Tibetan hulless barley could respond to varied N stress by regulating multiple common biological processes and pathways such as nitrogen metabolism, carbon metabolism, and photosynthesis. A large number of specific DEGs involved in diverse biological processes were also detected, implying differences in the potential regulatory patterns of low- and high-N stress response. Notably, we also identified some NIN-like proteins and other transcription factors significantly modulated by these stresses, suggesting the involvement of these transcription factors in N stress response. To our knowledge, this study is the first investigation of the Tibetan hulless barley transcriptome under N stress. The identified N-stress-related genes may provide resources for genetic improvement and promote N use efficiency.

Dataset Information

The complete mitochondrial genome of Tibetan hulless barley.

Publications

The complete mitochondrial genome of <i>Tibetan hulless</i> barley.

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