Pearl millet genome sequence provides a resource to improve agronomic traits in arid environments
- R. Varshney, Chengcheng Shi, Xun Xu
- BiologyNature Biotechnology
- 18 September 2017
This work resequenced and analyzed 994 pearl millet lines, enabling insights into population structure, genetic diversity and domestication, and establishes marker trait associations for genomic selection, to define heterotic pools, and to predict hybrid performance.
Determining the Physical Limits of the Brassica S Locus by Recombinational Analysis
- Amy L. Casselman, J. Vrebalov, J. Nasrallah
- BiologyThe Plant Cell
- 1 January 2000
A genetic analysis was performed to study the frequency of recombination for intervals across the Brassica S locus region, identified a 50-kb region that encompasses all specificity functions in the S haplotype that was analyzed, and identified mechanisms that might operate to preserve the tight linkage of self-incompatibility specificity genes within the S locu complex.
High-Resolution Physical Mapping in Pennisetum squamulatum Reveals Extensive Chromosomal Heteromorphism of the Genomic Region Associated with Apomixis1
- Y. Akiyama, J. Conner, P. Ozias‐Akins
- BiologyPlant Physiology
- 1 April 2004
The physical arrangement of bacterial artificial chromosomes containing apomixis-linked molecular markers by high resolution fluorescence in situ hybridization on pachytene chromosomes is shown.
Sequence Analysis of Bacterial Artificial Chromosome Clones from the Apospory-Specific Genomic Region of Pennisetum and Cenchrus1[W][OA]
- J. Conner, S. Goel, P. Ozias‐Akins
- BiologyPlant Physiology
- 28 May 2008
The ASGR sequences reveal that the ASGR contains both gene-rich and gene-poor segments, has many classes of transposable elements, and does not exhibit large-scale synteny with either rice or sorghum genomes but does contain multiple regions of microsynteny with these species.
Delineation by fluorescence in situ hybridization of a single hemizygous chromosomal region associated with aposporous embryo sac formation in Pennisetum squamulatum and Cenchrus ciliaris.
- S. Goel, Zhenbang Chen, J. Conner, Y. Akiyama, W. Hanna, P. Ozias‐Akins
- BiologyGenetics
- 1 March 2003
FISH results support the hypotheses that hemizygosity, proximity to centromeric sequences, and chromosome structure may all play a role in low recombination in the ASGR.
Comparative Mapping of the Brassica S Locus Region and Its Homeolog in Arabidopsis: Implications for the Evolution of Mating Systems in the Brassicaceae
- J. Conner, P. Conner, M. Nasrallah, J. Nasrallah
- BiologyThe Plant Cell
- 1 May 1998
A selective comparative mapping approach between Brassica campestris plants homozygous for the S8 haplotype and Arabidopsis revealed a high degree of synteny at the submegabase scale between the two homeologous regions.
A parthenogenesis gene of apomict origin elicits embryo formation from unfertilized eggs in a sexual plant
- J. Conner, Muruganantham Mookkan, H. Huo, Keun Chae, P. Ozias‐Akins
- Biology, MedicineProceedings of the National Academy of Sciences
- 24 August 2015
It is demonstrated that the PsASGR-BABY BOOM-like (PsAS GR-BBML) gene is expressed in egg cells before fertilization and can induce parthenogenesis and the production of haploid offspring in transgenic sexual pearl millet.
Evolution of the apomixis transmitting chromosome in Pennisetum
- Y. Akiyama, S. Goel, J. Conner, W. Hanna, Hitomi Yamada-Akiyama, P. Ozias‐Akins
- BiologyBMC Evolutionary Biology
- 5 October 2011
The Apospory-Specific Genomic Region likely preceded speciation in Cenchrus and its lateral transfer through hybridization and subsequent chromosome repatterning may have contributed to further Speciation in the two genera.
Comparative Physical Mapping of the Apospory-Specific Genomic Region in Two Apomictic Grasses: Pennisetum squamulatum and Cenchrus ciliaris
- S. Goel, Zhenbang Chen, P. Ozias‐Akins
- Medicine, BiologyGenetics
- 1 May 2006
Eight new ASGR-linked, AFLP-based molecular markers are identified, only one of which showed recombination with the trait for aposporous embryo sac development, and the ASGR appears to be maintained as a haplotype even though its position in the genome can be variable.
Construction of BAC libraries from two apomictic grasses to study the microcolinearity of their apospory-specific genomic regions
- D. Roche, J. Conner, P. Ozias‐Akins
- BiologyTheoretical and Applied Genetics
- 6 February 2002
Analysis of these BAC clones indicated that some of the SCAR markers are actually amplifying duplicated regions linked in coupling in both genomes and that restriction enzyme mapping will be necessary to sort out the duplications.
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