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  • Articles  (3)
  • *Phenotype  (3)
  • Nature Publishing Group (NPG)  (3)
  • American Chemical Society
  • Macmillian Magazines Ltd.
  • 1
    Publication Date: 2015-09-10
    Description: Somaclonal variation arises in plants and animals when differentiated somatic cells are induced into a pluripotent state, but the resulting clones differ from each other and from their parents. In agriculture, somaclonal variation has hindered the micropropagation of elite hybrids and genetically modified crops, but the mechanism responsible remains unknown. The oil palm fruit 'mantled' abnormality is a somaclonal variant arising from tissue culture that drastically reduces yield, and has largely halted efforts to clone elite hybrids for oil production. Widely regarded as an epigenetic phenomenon, 'mantling' has defied explanation, but here we identify the MANTLED locus using epigenome-wide association studies of the African oil palm Elaeis guineensis. DNA hypomethylation of a LINE retrotransposon related to rice Karma, in the intron of the homeotic gene DEFICIENS, is common to all mantled clones and is associated with alternative splicing and premature termination. Dense methylation near the Karma splice site (termed the Good Karma epiallele) predicts normal fruit set, whereas hypomethylation (the Bad Karma epiallele) predicts homeotic transformation, parthenocarpy and marked loss of yield. Loss of Karma methylation and of small RNA in tissue culture contributes to the origin of mantled, while restoration in spontaneous revertants accounts for non-Mendelian inheritance. The ability to predict and cull mantling at the plantlet stage will facilitate the introduction of higher performing clones and optimize environmentally sensitive land resources.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ong-Abdullah, Meilina -- Ordway, Jared M -- Jiang, Nan -- Ooi, Siew-Eng -- Kok, Sau-Yee -- Sarpan, Norashikin -- Azimi, Nuraziyan -- Hashim, Ahmad Tarmizi -- Ishak, Zamzuri -- Rosli, Samsul Kamal -- Malike, Fadila Ahmad -- Bakar, Nor Azwani Abu -- Marjuni, Marhalil -- Abdullah, Norziha -- Yaakub, Zulkifli -- Amiruddin, Mohd Din -- Nookiah, Rajanaidu -- Singh, Rajinder -- Low, Eng-Ti Leslie -- Chan, Kuang-Lim -- Azizi, Norazah -- Smith, Steven W -- Bacher, Blaire -- Budiman, Muhammad A -- Van Brunt, Andrew -- Wischmeyer, Corey -- Beil, Melissa -- Hogan, Michael -- Lakey, Nathan -- Lim, Chin-Ching -- Arulandoo, Xaviar -- Wong, Choo-Kien -- Choo, Chin-Nee -- Wong, Wei-Chee -- Kwan, Yen-Yen -- Alwee, Sharifah Shahrul Rabiah Syed -- Sambanthamurthi, Ravigadevi -- Martienssen, Robert A -- R01 GM067014/GM/NIGMS NIH HHS/ -- England -- Nature. 2015 Sep 24;525(7570):533-7. doi: 10.1038/nature15365. Epub 2015 Sep 9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Malaysian Palm Oil Board, 6, Persiaran Institusi, Bandar Baru Bangi, 43000 Kajang, Selangor, Malaysia. ; Orion Genomics, 4041 Forest Park Avenue, St Louis, Missouri 63108, USA. ; United Plantations Berhad, Jendarata Estate, 36009 Teluk Intan, Perak, Malaysia. ; Applied Agricultural Resources Sdn Bhd, No. 11, Jalan Teknologi 3/6, Taman Sains Selangor 1, 47810 Kota Damansara, Petaling Jaya, Selangor, Malaysia. ; FELDA Global Ventures R&D Sdn Bhd, c/o FELDA Biotechnology Centre, PT 23417, Lengkuk Teknologi, 71760 Bandar Enstek, Negeri Sembilan, Malaysia. ; Howard Hughes Medical Institute-Gordon and Betty Moore Foundation, Cold Spring Harbor Laboratory, Cold Spring Harbor, New York 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26352475" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Alternative Splicing/genetics ; Arecaceae/*genetics/metabolism ; *DNA Methylation ; Epigenesis, Genetic/*genetics ; *Epigenomics ; Fruit/genetics ; Genes, Homeobox/genetics ; Genetic Association Studies ; Genome, Plant/*genetics ; Introns/genetics ; Molecular Sequence Data ; *Phenotype ; Plant Oils/analysis/metabolism ; RNA Splice Sites/genetics ; RNA, Small Interfering/genetics ; Retroelements/*genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2011-09-17
    Description: We report genome sequences of 17 inbred strains of laboratory mice and identify almost ten times more variants than previously known. We use these genomes to explore the phylogenetic history of the laboratory mouse and to examine the functional consequences of allele-specific variation on transcript abundance, revealing that at least 12% of transcripts show a significant tissue-specific expression bias. By identifying candidate functional variants at 718 quantitative trait loci we show that the molecular nature of functional variants and their position relative to genes vary according to the effect size of the locus. These sequences provide a starting point for a new era in the functional analysis of a key model organism.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276836/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276836/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Keane, Thomas M -- Goodstadt, Leo -- Danecek, Petr -- White, Michael A -- Wong, Kim -- Yalcin, Binnaz -- Heger, Andreas -- Agam, Avigail -- Slater, Guy -- Goodson, Martin -- Furlotte, Nicholas A -- Eskin, Eleazar -- Nellaker, Christoffer -- Whitley, Helen -- Cleak, James -- Janowitz, Deborah -- Hernandez-Pliego, Polinka -- Edwards, Andrew -- Belgard, T Grant -- Oliver, Peter L -- McIntyre, Rebecca E -- Bhomra, Amarjit -- Nicod, Jerome -- Gan, Xiangchao -- Yuan, Wei -- van der Weyden, Louise -- Steward, Charles A -- Bala, Sendu -- Stalker, Jim -- Mott, Richard -- Durbin, Richard -- Jackson, Ian J -- Czechanski, Anne -- Guerra-Assuncao, Jose Afonso -- Donahue, Leah Rae -- Reinholdt, Laura G -- Payseur, Bret A -- Ponting, Chris P -- Birney, Ewan -- Flint, Jonathan -- Adams, David J -- 077192/Wellcome Trust/United Kingdom -- 079912/Wellcome Trust/United Kingdom -- 082356/Wellcome Trust/United Kingdom -- 083573/Wellcome Trust/United Kingdom -- 083573/Z/07/Z/Wellcome Trust/United Kingdom -- 085906/Wellcome Trust/United Kingdom -- 085906/Z/08/Z/Wellcome Trust/United Kingdom -- 090532/Wellcome Trust/United Kingdom -- 2T15LM007359/LM/NLM NIH HHS/ -- A6997/Cancer Research UK/United Kingdom -- BB/F022697/1/Biotechnology and Biological Sciences Research Council/United Kingdom -- G0800024/Medical Research Council/United Kingdom -- K25 HL080079/HL/NHLBI NIH HHS/ -- MC_U127561112/Medical Research Council/United Kingdom -- MC_U137761446/Medical Research Council/United Kingdom -- Cancer Research UK/United Kingdom -- Medical Research Council/United Kingdom -- England -- Nature. 2011 Sep 14;477(7364):289-94. doi: 10.1038/nature10413.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Wellcome Trust Sanger Institute, Hinxton, Cambridge CB10 1HH, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21921910" target="_blank"〉PubMed〈/a〉
    Keywords: Alleles ; Animals ; Animals, Laboratory/genetics ; Gene Expression Regulation/*genetics ; Genetic Variation/*genetics ; Genome/*genetics ; Genomics ; Mice/classification/*genetics ; Mice, Inbred C57BL/genetics ; Mice, Inbred Strains/*genetics ; *Phenotype ; Phylogeny ; Quantitative Trait Loci/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2011-09-17
    Description: Structural variation is widespread in mammalian genomes and is an important cause of disease, but just how abundant and important structural variants (SVs) are in shaping phenotypic variation remains unclear. Without knowing how many SVs there are, and how they arise, it is difficult to discover what they do. Combining experimental with automated analyses, we identified 711,920 SVs at 281,243 sites in the genomes of thirteen classical and four wild-derived inbred mouse strains. The majority of SVs are less than 1 kilobase in size and 98% are deletions or insertions. The breakpoints of 160,000 SVs were mapped to base pair resolution, allowing us to infer that insertion of retrotransposons causes more than half of SVs. Yet, despite their prevalence, SVs are less likely than other sequence variants to cause gene expression or quantitative phenotypic variation. We identified 24 SVs that disrupt coding exons, acting as rare variants of large effect on gene function. One-third of the genes so affected have immunological functions.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3428933/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3428933/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Yalcin, Binnaz -- Wong, Kim -- Agam, Avigail -- Goodson, Martin -- Keane, Thomas M -- Gan, Xiangchao -- Nellaker, Christoffer -- Goodstadt, Leo -- Nicod, Jerome -- Bhomra, Amarjit -- Hernandez-Pliego, Polinka -- Whitley, Helen -- Cleak, James -- Dutton, Rebekah -- Janowitz, Deborah -- Mott, Richard -- Adams, David J -- Flint, Jonathan -- 079912/Wellcome Trust/United Kingdom -- 082356/Wellcome Trust/United Kingdom -- 090532/Wellcome Trust/United Kingdom -- 098051/Wellcome Trust/United Kingdom -- 13031/Cancer Research UK/United Kingdom -- G0800024/Medical Research Council/United Kingdom -- MC_U137761446/Medical Research Council/United Kingdom -- Cancer Research UK/United Kingdom -- Medical Research Council/United Kingdom -- Wellcome Trust/United Kingdom -- England -- Nature. 2011 Sep 14;477(7364):326-9. doi: 10.1038/nature10432.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉The Wellcome Trust Centre for Human Genetics, Roosevelt Drive, Oxford OX3 7BN, UK.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/21921916" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Chromosome Breakpoints ; Exons/genetics ; Female ; Gene Expression ; Genetic Variation/*genetics ; Genome/*genetics ; Genomics ; Genotype ; Male ; Mice ; Mice, Inbred Strains/*genetics/immunology ; Mutagenesis, Insertional/genetics ; *Phenotype ; Quantitative Trait Loci/genetics ; Rats ; Retroelements/genetics ; Sequence Deletion/genetics
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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