Browsing IBERS Research papers by Author "Jones, R. Neil"

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  • Diez, M.; Jones, R. Neil (2004)
    The database is compiled from the world literature on B chromosomes published between 1906 and 1994, and has 3484 records. A brief description is given of the history and structure of the database, which runs in Microsoft ...
  • Jenkins, Glyn M.; Jones, R. Neil (2004)
    B chromosomes are considered to be genetically inert, yet often have pronounced and surprising effects upon the A chromosome behaviour at meiosis in inter-generic and inter-specific hybrids. We review here our current ...
  • Palestis, Brian G.; Burt, Austin; Jones, R. Neil; Trivers, Robert (2004-02-07)
    The chromosomes of mammals tend to be either mostly acrocentric (having one long arm) or mostly bi–armed, with few species having intermediate karyotypes. The theory of centromeric drive suggests that this observation ...
  • Jones, R. Neil; Houben, Andreas (2003)
    B chromosomes are dispensable elements that do not recombine with the A chromosomes of the regular complement and that follow their own evolutionary track. In some cases, they are known to be nuclear parasites with autonomous ...
  • Kumke, K.; Jones, R. Neil; Houben, Andreas (2008-08-01)
    Epigenetic marks in the chromosome complement of the liliaceous plant Puschkinia libanotica were studied using immunofluorescence to detect histone modifications. In particular, a comparison was made between the euchromatic ...
  • Houben, Andreas; Jones, R. Neil; Viegas, W. (2008-04-01)
    Background: Supernumerary B chromosomes (Bs) are a major source of intraspecific variation in nuclear DNA amounts in numerous species of plants. They favour large genomes, and create polymorphisms for DNA variation in ...
  • Puertas, M. J.; Vega, J. M.; Gonzalez-Sanchez, M.; Gonzalez-Garcia, M.; Jones, R. Neil (2008-05-01)
    B chromosomes (Bs) can be described as 'passengers in the genome', a term that has been used for the repetitive DNA which comprises the bulk of the genome in large genome species, except that Bs have a life of their own ...
  • Ressurreicao, F.; Viegas, W.; Delgado, M.; Meister, A.; Jones, R. Neil; Caperta, A. D.; Houben, Andreas (2006-05)
    The microtubule cytoskeleton plays a crucial role in the cell cycle and in mitosis. Colchicine is a microtubule-depolymerizing agent that has long been used to induce chromosome individualization in cells arrested at ...
  • Jones, R. Neil; Pasakinskiene, Izolda S. (2005)
    GISH has been a particularly useful technique for studying the Lolium-Festuca species complex of forage grasses. The reason for this utility is two-fold: (i) the complex is unique amongst crop plants in which fertile ...
  • King, Julie; Roberts, Luned A.; Kearsey, Mike J.; Thomas, Huw M.; King, Ian P.; Jones, R. Neil; Huang, Lin Shiow-Fen; Armstead, Ian Peter; Morgan, W. Gareth; King, Ian Philip (2002-05-01)
    A single chromosome of the grass species Festuca pratensis has been introgressed into Lolium perenne to produce a diploid monosomic substitution line . The chromatin of F. pratensis and L. perenne can be distinguished by ...
  • King, Julie; Roberts, Luned A.; Kearsey, Mike J.; Thomas, Huw M.; Jones, R. Neil; Huang, Lin S.; Armstead, Ian P.; Morgan, W. Gareth; King, Ian P. (2002-05-01)
    A single chromosome of the grass species Festuca pratensis has been introgressed into Lolium perenne to produce a diploid monosomic substitution line (2n 2x 14). The chromatin of F. pratensis and L. perenne can be distinguished ...
  • Morais-Cecilio, L.; Jones, R. Neil; Delgado, M.; Caperta, A. D.; Viegas, W.; Ribeiro, T. (2004)
    In rye each B chromosome (B) represents 5.5% of the diploid A genome. Rye Bs have several nuclear to whole plant effects although they seem to bear no genes except for the ones that lead to their maintenance within a ...
  • Jones, R. Neil; Akahori, Atsushi; Wakimoto, Munenori; Tsujimoto, Hishashi; Dou, Quanwen; Nasuda, Shuhei; Niwa, Katsumasa; Tanaka, Hiroyuki; Endo, Takashi Ryu (2008-03-25)
    The rye B chromosome is a supernumerary chromosome that increases in number in its host by directed postmeiotic drive. Two types of rye B chromosomes that had been introduced into common wheat were dissected into separate ...
  • Palestis, B. G.; Trivers, R.; Burt, Austin; Jones, R. Neil (2004)
    In this review we look at the broad picture of how B chromosomes are distributed across a wide range of species. We review recent studies of the factors associated with the presence of Bs across species, and provide new ...
  • Viegas, W.; Frescatada, M.; Delgado, M.; Ribeiro-Varandas, E.; Jones, R. Neil (2010-05-26)
    Biologists have been fascinated for more than 2 centuries about how the nucleus in eukaryotes is organised. Certain of the component parts are well known, but the overall picture is blurred and often confusing. Small genome ...
  • Ribeiro, Teresa; Pires, Bruno; Delgado, Margarida; Viegas, Wanda; Jones, R. Neil; Morais–Cecílio, Leonor (2004-12)
    Spontaneous DNA insertions from supernumerary B chromosomes (Bs) into the standard A chromosome complement were detected in rye (Secale cereale L.), using fluorescent in situ hybridization (FISH) analysis with the D1100 ...
  • Donnison, Iain S.; Cisneros, Pedro; Montoya, Teresa; Armstead, Ian P.; Thomas, Barry J.; Jones, R. Neil; Morris, Phillip (2002-05)
    We have been using the classical model long-day (LD) plant Lolium temulentum Ceres, which can flower after a single inductive LD treatment, to study the floral transition in grasses. Plants of L. temulentum have been grown ...
  • Armstead, Ian P.; King, Ian P.; Morgan, W. G.; Forster, John W.; Jones, R. Neil; Bollard, Andrea L.; Thomas, Huw M.; Hayward, Mike Denis; Harper, John A. (2001-02-20)
    Molecular marker analysis and genomic in situ hybridisation (GISH) were used to examine the process of chromosome segment introgression in BC2 diploid hybrids (2n=2x=14) between Lolium perenne and Festuca pratensis. Two ...
  • Bocianowski, J.; Joks, W.; Zwierzykowska, E.; Jones, R. Neil; Kosmala, A.; Zwierzykowski, Z. (2006-06-14)
    In the allotetraploid, Festuca pratensis Huds. (2n = 4x = 28) £ Lolium perenne L. (2n = 4x = 28) the balance of chromatin, as determined by GISH, changes over successive generations of open pollination in favour of L. ...
  • Jones, R. Neil; Pasakinskiene, Izolda S. (2005)
    The genomes of grasses and cereals include a diverse and large collection of selfish genetic elements, many of which are fossil relics of ancient origin. Some of these elements are active and, because of their selfish ...

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