High levels of nucleotide diversity of a protein kinase gene, MAPK5 in populations of wild rice (Oryza rufipogon Griff.) from Thailand and Lao PDR

IF 1 Q4 GENETICS & HEREDITY
Preecha Prathepha , Ross H. Andrews
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引用次数: 0

Abstract

Protein kinase plays important roles in plant growth, development, and responses to various biotic and abiotic stresses. Levels of nucleotide diversity, however, have not been investigated to date in natural populations of wild rice. In this study, the diversity of the MAPK5 gene and its characteristics were analyzed in samples of wild rice collected from natural populations in Thailand and Lao PDR, using a re-sequencing DNA technique. For the entire of 514 nucleotides sequence analyzed, non-synonymous, synonymous substitutions, and frame-shift indels were identified in coding sequence of exon1, but not for exon2. For non-coding sequences, indel mutations were present in the sequenced region of the first intron of the MAPK5 gene. These results suggest that alternative splicing transcripts of the MAPK5 gene are potentially generated in response to various environment factors. There was substantial nucleotide variation with a high estimate of nucleotide diversity (π = 0.18113), number of haplotypes (H = 15), and the number of polymorphic sites (S = 319). The Tajima's D value of the MAPK5 gene was 1.673 (p > 0.10), suggesting that the MAPK5 gene of wild rice evolved neutrally. The high level of nucleotide diversity found in natural populations of wild rice may provide populations with the opportunity to adapt to environmental changes in their natural habitats.

泰国和老挝人民民主共和国野生稻(Oryza rufipogon Griff.)
蛋白激酶在植物的生长、发育以及对各种生物和非生物胁迫的反应中发挥着重要作用。然而,迄今为止还没有对野生稻自然种群的核苷酸多样性水平进行过调查。本研究采用DNA重测序技术,分析了从泰国和老挝人民民主共和国自然种群中采集的野生稻样本中MAPK5基因的多样性及其特征。在分析的全部 514 个核苷酸序列中,发现了外显子 1 编码序列中的非同义替换、同义替换和移码嵌合,但没有发现外显子 2 中的同义替换和移码嵌合。在非编码序列中,MAPK5 基因第一个内含子的测序区域出现了嵌合突变。这些结果表明,MAPK5 基因的替代剪接转录本可能是对各种环境因素的反应。MAPK5基因存在大量核苷酸变异,核苷酸多样性估计值(π = 0.18113)、单倍型数量(H = 15)和多态位点数量(S = 319)都很高。MAPK5基因的Tajima's D值为1.673(p >0.10),表明野生稻的MAPK5基因是中性进化的。野生稻自然种群中发现的高水平核苷酸多样性可能为种群提供了适应其自然栖息地环境变化的机会。
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来源期刊
Gene Reports
Gene Reports Biochemistry, Genetics and Molecular Biology-Genetics
CiteScore
3.30
自引率
7.70%
发文量
246
审稿时长
49 days
期刊介绍: Gene Reports publishes papers that focus on the regulation, expression, function and evolution of genes in all biological contexts, including all prokaryotic and eukaryotic organisms, as well as viruses. Gene Reports strives to be a very diverse journal and topics in all fields will be considered for publication. Although not limited to the following, some general topics include: DNA Organization, Replication & Evolution -Focus on genomic DNA (chromosomal organization, comparative genomics, DNA replication, DNA repair, mobile DNA, mitochondrial DNA, chloroplast DNA). Expression & Function - Focus on functional RNAs (microRNAs, tRNAs, rRNAs, mRNA splicing, alternative polyadenylation) Regulation - Focus on processes that mediate gene-read out (epigenetics, chromatin, histone code, transcription, translation, protein degradation). Cell Signaling - Focus on mechanisms that control information flow into the nucleus to control gene expression (kinase and phosphatase pathways controlled by extra-cellular ligands, Wnt, Notch, TGFbeta/BMPs, FGFs, IGFs etc.) Profiling of gene expression and genetic variation - Focus on high throughput approaches (e.g., DeepSeq, ChIP-Seq, Affymetrix microarrays, proteomics) that define gene regulatory circuitry, molecular pathways and protein/protein networks. Genetics - Focus on development in model organisms (e.g., mouse, frog, fruit fly, worm), human genetic variation, population genetics, as well as agricultural and veterinary genetics. Molecular Pathology & Regenerative Medicine - Focus on the deregulation of molecular processes in human diseases and mechanisms supporting regeneration of tissues through pluripotent or multipotent stem cells.
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