• Medientyp: E-Artikel
  • Titel: Characterization of x-type high-molecular-weight glutenin promoters (x-HGP) from different genomes in Triticeae
  • Beteiligte: Jiang, Qian-Tao; Zhao, Quan-Zhi; Wang, Xiu-Ying; Wang, Chang-Shui; Zhao, Shan; Cao, Xue; Lan, Xiu-Jin; Lu, Zhen-Xiang; Zheng, You-Liang; Wei, Yu-Ming
  • Erschienen: Springer Science and Business Media LLC, 2013
  • Erschienen in: SpringerPlus, 2 (2013) 1
  • Sprache: Englisch
  • DOI: 10.1186/2193-1801-2-152
  • ISSN: 2193-1801
  • Schlagwörter: Multidisciplinary
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: Abstract The sequences of x-type high-molecular-weight glutenin promoter (x-HGP) from 21 diploid Triticeae species were cloned and sequenced. The lengths of x-HGP varied from 897 to 955 bp, and there are 329 variable sites including 105 singleton sites and 224 polymorphic sites. Genetic distances of pairwise X-HGP sequences ranged from 0.30 to 16.40% within 21 species and four outgroup species of Hordeum. All five recognized regulatory elements emerged and showed higher conservation in the x-HGP of 21 Triticeae species. Most variations were distributed in the regions among or between regulatory elements. A 22 bp and 50 bp insertions which were the copy of adjacent region with minor change, were found in the x-HGP of Ae. speltoides and Ps. Huashanica, and could be regarded as genome specific indels. The phylogeny of media-joining network and neighbour-joining tree both supported the topology were composed of three sperate clusters. Especially, the cluster I comprising the x-HGP sequences of Aegilops, Triticum, Henrardia, Agropyron and Taeniatherum was highly supporting by both network and NJ tree. As conferring to higher level and temporal and spatial expression, x-HGP can used as the source of promoter for constructing transgenic plants which allow endosperm-specific expression of exogenous gene on higher level. In addition, the x-HGP has enough conservation and variation; so it should be valuable in phylogenetic analyses of Triticeae family members.
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