Oats (Avena sativa)

The oat genus Avena contains wild/weedy and domesticated forms at the hexaploid (42 chromosomes), tetraploid (28 chromosomes), and diploid (14 chromosomes) levels.  Their center of origin was in North Africa, with additional centers of domestication in western Eurasia and Ethiopia.  Common spring oats, A. sativa, are part of a hexaploid complex that includes domesticated winter and hulless or naked oats along with common wild (A. fatua) and wild animated (A. sterilis) oats.  Common wild oat is one of the most widespread temperate cereal weeds on earth while animated oat is a ubiquitous roadside weed in the Mediterranean basin and Near East.  Naked oats are witnessing a resurgence in popularity in China, where the crop became widespread thousands of years ago and was known as 'bird wheat'.  Throughout their native range, Avena species are suffering a loss of genetic diversity (genetic erosion) due to habitat degradation, urbanization, climate change, and/or civil-military conflict.  In our lab, we are interested in the preservation and utilization of wild species as exotic gene sources for adding value to common oats.  This requires discovery of novel alleles for biochemical traits of interest by DNA sequencing and RNA expression studies.

Avena Research Publications

Tinker NA, Chao S, Lazo GR, Oliver RE, Huang Y-F, Poland JA, Jellen EN, Maughan PJ, Kilian A, Jackson EW (2014) A SNP genotyping array for hexaploid oat (Avena sativa L.).  The Plant Genome. doi:10.3835/plantgenome2014.03.0010.

Islamovic E, Obert DE, Budde AD, Schmitt M, Brunick R, Kilian A, Chao S, Lazo GR, Marshall JM, Jellen EN, Maughan PJ, Hu G, Klos KE, Brown RH, Jackson EW (2014) QTL of barley malting quality trait components in the 1 Stellar/01Ab8219 mapping population.  Molecular Breeding 34:59–73.

Oliver RE, Tinker NA, Lazo GR, Chao S, Jellen EN, Carson M, Rines HW, Obert DE, Lutz JD, Shackelford I, Korol A, Wight CP, Gardner KM, Hattori J, Beattie AD, Bjørnstad Å, Bonman JM, Jannink J-L, Sorrells M, Brown-Guedira GL, Mitchell Fetch JW, Harrison SA, Howarth CJ, Ibrahim A, Kolb FL, McMullen MS, Murphy JP, Ohm HW, Rossnagel BG, Yan W, Miclaus KJ, Hiller J, Maughan PJ, Redman Hultz RR, Anderson JM, Islamovic E, Jackson EW (2013) SNP discovery and chromosome anchoring provide the first physically-anchored hexaploid oat map and reveal synteny with model species.  PLoS One 8:1-12.

Oliver RE, Jellen EN, Ladizinsky G, Korol AB, Kilian A, Beard JL, Dumlupinar Z, Wisniewski-Morehead NH, Svedin E, Coon M, Redman RR, Maughan PJ, Obert DE, Jackson EW (2011) New Diversity Arrays Technology (DArT) markers for tetraploid oat (Avena magna Murphy et Terrell) provide the first complete oat linkage map and markers linked to domestication genes from hexaploid A. sativa L.  Theoretical and Applied Genetics 123:1159-1171.

Oliver RE, Lazo GR, Lutz JD, Rubenfield MJ, Tinker NA, Morehead NH, Adhikary D, Jellen EN, Maughan PJ, Brown-Guedira GL, Chao S, Beattie A, Carson ML, Rines HW, Obert DE, Bonman JM, Jackson EW (2011) Model SNP development for complex genomes using high-throughput 454 sequencing technology.  BMC Genomics 12:77.

Sanz MJ, Jellen EN, Loarce Y, Irigoyen ML, Ferrer E,  Fominaya A (2010)  A new chromosome nomenclature system for oat (Avena sativa L. and A. byzantina C. Koch) based on FISH analysis of monosomic lines.  Theoretical and Applied Genetics 121:1541-1552.

Wooten DR, Livingston III DP, Lyerly HJ, Holland JB, Jellen EN, Marshall DS, Murphy JP  (2009)  Quantitative trait loci and epistasis for oat winter hardiness component traits.  Crop Science 49:1989-1998.

Wooten DR, Livingston III DP, Jellen EN, Boren KJ, Marshall DS, Murphy JP (2007) An intergenomic reciprocal translocation associated with oat winter hardiness component traits.  Crop Science 47:1832-1840.

Santos AG, Livingston DP, Jellen EN, Wooten DR, Murphy JP (2006) A cytological marker associated with winterhardiness in oat.  Crop Science 46:203-208.

Durrant JD, Gardunia BW, Livingstone KD, Stevens MR, Jellen EN  (2006) An algorithm for analyzing linkages affected by heterozygous translocations:  QuadMap.  Journal of Heredity 97:62-66.

Ladizinsky G, Jellen EN (2003) Cytogenetic affinities between populations of Avenainsularis Ladiz. from Sicily and Tunisia.  Genetic Resources and Crop Evolution 50:11-15.

Book Chapter

Jellen EN, Leggett JM (2006) Cytogenetic Manipulation in Oat Improvement, Ch. 7.  In Singh RJ, Jauhar PP (ed) Genetic Resources, Chromosome Engineering, and Crop Improvement, Vol. 2.  Cereals. CRC Press, Boca Raton, FL, Ch.