Molecular Genetics and Genomics

, Volume 278, Issue 2, pp 197–209

Analysis of EST sequences suggests recent origin of allotetraploid colonial and creeping bentgrasses

  • David Rotter
  • Arvind K. Bharti
  • Huaijun Michael Li
  • Chongyuan Luo
  • Stacy A. Bonos
  • Suleiman Bughrara
  • Geunhwa Jung
  • Joachim Messing
  • William A. Meyer
  • Stephen Rudd
  • Scott E. Warnke
  • Faith C. Belanger
Original Paper

DOI: 10.1007/s00438-007-0240-2

Cite this article as:
Rotter, D., Bharti, A.K., Li, H.M. et al. Mol Genet Genomics (2007) 278: 197. doi:10.1007/s00438-007-0240-2

Abstract

Advances in plant genomics have permitted the analysis of several members of the grass family, including the major domesticated species, and provided new insights into the evolution of the major crops on earth. Two members, colonial bentgrass (Agrostis capillaris L.) and creeping bentgrass (A. stolonifera L.) have only recently been domesticated and provide an interesting case of polyploidy and comparison to crops that have undergone human selection for thousands of years. As an initial step of characterizing these genomes, we have sampled roughly 10% of their gene content, thereby also serving as a starting point for the construction of their physical and genetic maps. Sampling mRNA from plants subjected to environmental stress showed a remarkable increase in transcription of transposable elements. Both colonial and creeping bentgrass are allotetraploids and are considered to have one genome in common, designated the A2 genome. Analysis of conserved genes present among the ESTs suggests the colonial and creeping bentgrass A2 genomes diverged from a common ancestor approximately 2.2 million years ago (MYA), thereby providing an enhanced evolutionary zoom in respect to the origin of maize, which formed 4.8 MYA, and tetraploid wheat, which formed only 0.5 MYA and is the progenitor of domesticated hexaploid wheat.

Keywords

AgrostisEvolutionGrass genomicsPolyploidyEnvironmental stress

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • David Rotter
    • 1
  • Arvind K. Bharti
    • 2
  • Huaijun Michael Li
    • 1
  • Chongyuan Luo
    • 1
  • Stacy A. Bonos
    • 1
  • Suleiman Bughrara
    • 3
  • Geunhwa Jung
    • 4
  • Joachim Messing
    • 2
  • William A. Meyer
    • 1
  • Stephen Rudd
    • 5
  • Scott E. Warnke
    • 6
  • Faith C. Belanger
    • 1
  1. 1.Department of Plant Biology and Pathology and The Biotechnology Center for Agriculture & the Environment, School of Environmental and Biological Sciences, RutgersThe State University of New JerseyNew BrunswickUSA
  2. 2.The Plant Genome Initiative at Rutgers, Waksman Institute, RutgersThe State University of New Jersey PiscatawayUSA
  3. 3.Department of Crop and Soil ScienceMichigan State UniversityEast LansingUSA
  4. 4.Department of Plant, Soil, and Insect SciencesUniversity of Massachusetts-AmherstAmherstUSA
  5. 5.Turku Center for BiotechnologyTurkuFinland
  6. 6.USDA-ARSBeltsvilleUSA