Comparative analysis of rosaceous genomes and the reconstruction of a putative ancestral genome for the family

BMC Evolutionary Biology

Research Article

Esther van der Knaap¹  Antonio Cabrera¹  Amy Iezzoni²  Elena Lopez Girona³  Daniel J Sargent³  Massimo Pindo⁴  Michela Troggio⁴  Alessandro Cestaro⁴  Riccardo Velasco⁴  Eudald Illa⁵  Pere Arús⁵  Ross Crowhurst⁶  Susan Gardiner⁷  David Chagné⁷  Jill Bushakra⁷ 

[1] Department of Horticulture and Crop Science, The Ohio State University/Ohio Agricultural Research and Development Center, 44691, Wooster, OH, USA;Department of Horticulture, Michigan State University, 48824, East Lansing, MI, USA;East Malling Research, New Road, East Malling, ME19 6BJ, Kent, UK;IASMA Research and Innovation Centre, Foundation Edmund Mach, Via E Mach 1, 38010, San Michele all'Adige, (TN), Italy;IRTA, Centre de Recerca en Agrigenòmica CSIC-IRTA-UAB, Carretera de Cabrils Km 2, 08348, Cabrils (Barcelona), Spain;The New Zealand Institute for Plant & Food Research Limited, Mt Albert Research Centre, Private Bag 92169, 1142, Auckland, New Zealand;The New Zealand Institute for Plant & Food Research Limited, Palmerston North Research Centre, Private Bag 11600, 4442, Palmerston North, New Zealand;

关键词: Linkage Group;    High Resolution Melting;    Ancestral Genome;    Syntenic Block;    Translocation Event;   

DOI  :  10.1186/1471-2148-11-9

 received in 2010-08-13, accepted in 2011-01-12,  发布年份 2011

来源: Springer

【 摘 要 】

BackgroundComparative genome mapping studies in Rosaceae have been conducted until now by aligning genetic maps within the same genus, or closely related genera and using a limited number of common markers. The growing body of genomics resources and sequence data for both Prunus and Fragaria permits detailed comparisons between these genera and the recently released Malus × domestica genome sequence.ResultsWe generated a comparative analysis using 806 molecular markers that are anchored genetically to the Prunus and/or Fragaria reference maps, and physically to the Malus genome sequence. Markers in common for Malus and Prunus, and Malus and Fragaria, respectively were 784 and 148. The correspondence between marker positions was high and conserved syntenic blocks were identified among the three genera in the Rosaceae. We reconstructed a proposed ancestral genome for the Rosaceae.ConclusionsA genome containing nine chromosomes is the most likely candidate for the ancestral Rosaceae progenitor. The number of chromosomal translocations observed between the three genera investigated was low. However, the number of inversions identified among Malus and Prunus was much higher than any reported genome comparisons in plants, suggesting that small inversions have played an important role in the evolution of these two genera or of the Rosaceae.

【 授权许可】

Unknown   
© Illa et al; licensee BioMed Central Ltd. 2011. This article is published under license to BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.