Research Topics
Genomes and GenesSpecies | R Kelly DaweSummaryAffiliation: University of Georgia Country: USA Publications
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Publications
Transformation of rice with long DNA-segments consisting of random genomic DNA or centromere-specific DNABao H Phan
Department of Crop and Soil Sciences, University of Georgia, 111 Riverbend Road, Athens, GA 30602, USA
Transgenic Res 16:341-51. 2007....
Centromere renewal and replacement in the plant kingdomR Kelly Dawe
Department of Plant Biology, University of Georgia, Miller Plant Sciences Building, Athens, GA 30602, USA
Proc Natl Acad Sci U S A 102:11573-4. 2005- Plant neocentromeres: fast, focused, and drivenR Kelly Dawe
Department of Genetics University of Georgia, Athens, GA 30602, USA
Chromosome Res 12:655-69. 2004..In addition, we compare and contrast neocentromere-mediated meiotic drive with a recently proposed meiotic drive model for centromere evolution... - Centromeres put epigenetics in the driver's seatR Kelly Dawe
Department of Plant Biology, University of Georgia, Athens, GA 30602, USA
Trends Biochem Sci 31:662-9. 2006..We propose that key kinetochore proteins have adapted to disrupt such sequence-specific interactions and restore epigenetic inheritance... - Distinct influences of tandem repeats and retrotransposons on CENH3 nucleosome positioningJonathan I Gent
Department of Plant Biology, University of Georgia, Athens, Georgia, USA
Epigenetics Chromatin 4:3. 2011..abstract:.. - The maize Ab10 meiotic drive system maps to supernumerary sequences in a large complex haplotypeRebecca J Mroczek
Department of Plant Biology, University of Georgia, Athens, Georgia 30602, USA
Genetics 174:145-54. 2006..These and other data suggest that the Ab10 meiotic drive system was initially acquired from a related species and that a complex haplotype evolved around it... - Maize NDC80 is a constitutive feature of the central kinetochoreYaqing Du
Department of Plant Biology, University of Georgia, Athens, GA 30602, USA
Chromosome Res 15:767-75. 2007..The data suggest that in plants NDC80 is on par with 'foundation' kinetochore proteins such as CENH3 and CENP-C... - Precise centromere mapping using a combination of repeat junction markers and chromatin immunoprecipitation-polymerase chain reactionAmy C Luce
Department of Plant Biology, University of Georgia, Georgia 30602, USA
Genetics 174:1057-61. 2006..Repeat junction mapping was combined with anti-CENH3-mediated ChIP to provide a definitive map position for maize centromere 8... - Widespread gene conversion in centromere coresJinghua Shi
Department of Plant Biology, University of Georgia, Athens, Georgia, United States of America
PLoS Biol 8:e1000327. 2010..We conclude that gene conversion accelerates centromere evolution by facilitating sequence exchange among chromosomes... - DNA binding of centromere protein C (CENPC) is stabilized by single-stranded RNAYaqing Du
Department of Plant Biology, University of Georgia, Athens, Georgia, United States of America
PLoS Genet 6:e1000835. 2010..The data suggest that centromeric RNA helps to recruit CENPC to the inner kinetochore by altering its DNA binding characteristics... - Phosphoserines on maize CENTROMERIC HISTONE H3 and histone H3 demarcate the centromere and pericentromere during chromosome segregationXiaolan Zhang
Department of Plant Biology, University of Georgia, Athens, Georgia 30602, USA
Plant Cell 17:572-83. 2005..We propose that a centromere-initiated wave of histone phosphorylation is an early step in defining the two major structural domains required for chromosome segregation: centromere (alignment, motility) and pericentromere (cohesion)... - Centromere-encoded RNAs are integral components of the maize kinetochoreChristopher N Topp
Departments of Plant Biology and Genetics, University of Georgia, Athens, GA 30602, USA
Proc Natl Acad Sci U S A 101:15986-91. 2004..The bulk of the immunoprecipitated RNA ranged in size from 40 to 200 nt. These data provide evidence for a pool of protected, single-stranded centromeric RNA within the centromere/kinetochore complex... - Strong epigenetic similarity between maize centromeric and pericentromeric regions at the level of small RNAs, DNA methylation and H3 chromatin modificationsJonathan I Gent
Department of Plant Biology, University of Georgia, Athens, Georgia 30602, USA
Nucleic Acids Res 40:1550-60. 2012.... 
Fused sister kinetochores initiate the reductional division in meiosis IXuexian Li
Department of Plant Biology, University of Georgia, Athens, 30602, USA
Nat Cell Biol 11:1103-8. 2009..The data establish that sister kinetochores in meiosis I are fused by a shared microtubule-binding face and that this direct linkage is required for reductional division...- Four loci on abnormal chromosome 10 contribute to meiotic drive in maizeEvelyn N Hiatt
Department of Genetics, University of Georgia, Athens 30602, USA
Genetics 164:699-709. 2003..These results demonstrate that neocentromere activity and increased recombination are not the only events required for meiotic drive... - Stable integration of an engineered megabase repeat array into the maize genomeHan Zhang
Department of Genetics, University of Georgia, Athens, GA 30602, USA
Plant J 70:357-65. 2012..It is anticipated that these experimental approaches will be useful for future applications in artificial chromosome design... - The meiotic drive system on maize abnormal chromosome 10 contains few essential genesEvelyn N Hiatt
Department of Genetics, University of Georgia, Athens, GA 30602, USA
Genetica 117:67-76. 2003..These and other published data suggest that meiotic drive systems tend to evolve in gene-sparse or otherwise information-poor regions of the genome where they are less likely to negatively affect individual fitness... - Partitioning of the maize epigenome by the number of methyl groups on histone H3 lysines 9 and 27Jinghua Shi
Department of Pathology, University of Georgia, Athens, Georgia 30602, USA
Genetics 173:1571-83. 2006..Each methylation state identifies different regions of the epigenome. We discuss the evolutionary lability of histone methylation profiles and draw a distinction between H3K9me2-mediated gene silencing and heterochromatin formation... - LumberJack: a heuristic tool for sequence alignment exploration and phylogenetic inferenceCarolyn J Lawrence
Department of Plant Biology, The University of Georgia, Athens 30602, USA
Bioinformatics 20:1977-9. 2004..Availability and SUPPLEMENTARY INFORMATION: http://www.plantbio.uga.edu/~russell/software.html.. - Centromeric retroelements and satellites interact with maize kinetochore protein CENH3Cathy Xiaoyan Zhong
Department of Plant Biology, University of Georgia, Athens, Georgia 30602, USA
Plant Cell 14:2825-36. 2002..Approximately 38 and 33% of CentC and CRM are precipitated in the chromatin immunoprecipitation assay, consistent with data showing that much, but not all, of CENH3 colocalizes with CentC... - Distribution of retroelements in centromeres and neocentromeres of maizeRebecca J Mroczek
Department of Plant Biology, University of Georgia, Athens, Georgia 30602, USA
Genetics 165:809-19. 2003..CR elements may have evolved mutualistic relationships with their plant hosts: they are known to interact with the kinetochore protein CENH3 and appear to accumulate in clusters, leaving long satellite arrays intact... - Centromeres: long intergenic spaces with adaptive featuresLisa Kanizay
Department of Plant Biology, Miller Plant Science Bldg, University of Georgia, Athens, GA 30602, USA
Funct Integr Genomics 9:287-92. 2009..On genetic maps centromeres appear as long intergenic spaces that evolve rapidly and apparently without regard to host fitness... - Reinterpreting pericentromeric heterochromatinChristopher N Topp
Department of Plant Biology, University of Georgia, Athens, Georgia 30602, USA
Curr Opin Plant Biol 9:647-53. 2006..The available data from plants suggest that sister chromatid cohesion is marked by histone phosphorylation and mediated by Aurora kinases... - Independently regulated neocentromere activity of two classes of tandem repeat arraysEvelyn N Hiatt
Department of Genetics, University of Georgia, Athens, Georgia 30602, USA
Plant Cell 14:407-20. 2002..Neocentromere-mediated drive provides a plausible mechanism for the evolution and maintenance of repeat arrays that occur in interstitial positions... - Mechanisms of plant spindle formationHan Zhang
Department of Genetics, University of Georgia, Athens, GA 30602, USA
Chromosome Res 19:335-44. 2011.... - Maximum likelihood methods reveal conservation of function among closely related kinesin familiesCarolyn J Lawrence
University of Georgia, Department of Botany, Athens, GA 30602, USA
J Mol Evol 54:42-53. 2002..In addition, we found that one monophyletic clade composed exclusively of sequences with a C-terminal motor domain contains all known minus end-directed kinesins... 
A standardized kinesin nomenclatureCarolyn J Lawrence
Department of Plant Biology, The University of Georgia, Athens, GA 30602, USA
J Cell Biol 167:19-22. 2004..The scheme unifies all previous phylogenies and nomenclature proposals, while allowing individual sequence names to remain the same, and for expansion to occur as new sequences are discovered...- RNA interference, transposons, and the centromereR Kelly Dawe
Department of Plant Biology, University of Georgia Athens, GA 30602, USA
Plant Cell 15:297-301. 2003 - RNA as a structural and regulatory component of the centromereJonathan I Gent
Department of Plant Biology, University of Georgia, Athens, Georgia 30602
Annu Rev Genet 46:443-53. 2012..We also review literature suggesting that the process of centromeric transcription may be as important as the resulting RNA and that such transcription may be involved in recruiting the centromeric histone variant CENH3... - Total centromere size and genome size are strongly correlated in ten grass speciesHan Zhang
Department of Genetics, University of Georgia, Athens, 30602, USA
Chromosome Res 20:403-12. 2012..Centromere size may be determined by a limiting component mechanism similar to that described for Caenorhabditis elegans centrosomes... - RNA interference on chromosomesR Kelly Dawe
Nat Genet 36:1141-2. 2004 - Maize centromeres: organization and functional adaptation in the genetic background of oatWeiwei Jin
Department of Horticulture, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
Plant Cell 16:571-81. 2004..We further demonstrate that in the chromosomal addition lines in which two CenH3 genes were present, one from oat and one from maize, the oat CENH3 was consistently incorporated by the maize centromeres... - Marcus rhoades, preferential segregation and meiotic driveJames A Birchler
Division of Biological Sciences, University of Missouri, Columbia, Missouri 65211, USA
Genetics 164:835-41. 2003 - Chromatin immunoprecipitation reveals that the 180-bp satellite repeat is the key functional DNA element of Arabidopsis thaliana centromeresKiyotaka Nagaki
Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706, USA
Genetics 163:1221-5. 2003..ChIP assays showed that the 180-bp centromeric satellite repeat was precipitated with the antibody, suggesting that this repeat is the key component of the centromere/kinetochore complex in Arabidopsis... - Molecular and cytological analyses of large tracks of centromeric DNA reveal the structure and evolutionary dynamics of maize centromeresKiyotaka Nagaki
Department of Horticulture, University of Wisconsin, Madison, Wisconsin 53706, USA
Genetics 163:759-70. 2003..Highly conserved sequence motifs were found in the LTRs of the centromere-specific retrotransposons in the grass species, suggesting that the LTRs may be important for the centromere specificity of this retrotransposon family... - Molecular and functional dissection of the maize B chromosome centromereWeiwei Jin
Department of Horticulture, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
Plant Cell 17:1412-23. 2005..Our results demonstrate that the amount of CENH3 at the B centromere can be varied, but with decreasing amounts, the function of the centromere becomes impaired... - A molecular view of plant centromeresJiming Jiang
Department of Horticulture, University of Wisconsin Madison, Madison, WI 53706, USA
Trends Plant Sci 8:570-5. 2003..CR elements as well as their flanking centromeric satellite DNA are actively transcribed in maize. These data suggest that the deposition of centromeric histones might be a transcription-coupled event... - Engineered plant minichromosomes: a bottom-up success?Andreas Houben
Leibniz Institute of Plant Genetics andCrop Plant Research, D 06466 Gatersleben, Germany
Plant Cell 20:8-10. 2008