Avena
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
Zeng X, Mishina K, Jia J, Distelfeld A, Maughan PJ, Kikuchi S, Sassa H, Komatsuda T (2020) The brittle rachis trait in species belonging to the Triticeae and its controlling genes Btr1 and Btr2. Front. Plant Sci. 11:1000
Fogarty MC, Smith SM, Sheridan JL, Hu G, Islamovic E, Reid R, Jackson EW, Maughan PJ, Ames NP, Jellen EN, Hsieh T-F (2019). Identification of Mixed Linkage β-glucan Quantitative Trait Loci and Evaluation of CslF6 Homoeologs in Hexaploid Oat. Crop Science doi.org/10.1002/csc2.20015
Maughan PJ, Lee R, Walstead RN, Vickerstaff RJ, Fogarty MC, Brouwer CR, Reid RR, Jay JJ, Bekele WA, Jackson EW, Tinker NA, Langdon T, Schlueter JA, Jellen EN (2019) Genomic insights from the first chromosome-scale assemblies of oat (Avena spp.) diploid species. BMC Biology 17(92):1-19
Gines M, Baldwin T, Rashid A, Bregitzer P, Maughan PJ, Jellen EN, Esvelt-Klos K (2018) Identification and validation of superior reference genes for barley using in silico analysis. Crop Science 58:332-341
Yan H, Bekele WA, Wight CP, Peng Y, Langdon T, Latta RG, Diederichsen A, Fu Y-B, Howarth CJ, Jellen EN, Boyle B, Wei Y, Tinker NA (2016) High-density marker profiling confirms ancestral genomes of Avena species and identifies D-genome chromosomes of hexaploid oat. Theoretical and Applied Genetics 129:2133-2149
Dumlupinar Z, Jellen EN, Bonman JM, Jackson EW (2016) Genetic diversity and crown rust resistance of oat landraces from various locations throughout Turkey. Turkish Journal of Agriculture and Forestry, 40:262-268
Dumlupinar Z, Brown R, Campbell R, Jellen EN, Anderson J, Bonman JM, Carson M, Chao S, Obert D, Jackson E (2016) The art of attrition: development of robust oat microsatellites. Plant Breeding, 135:323-334
Chaffin A, Huang Y-F, Smith S, Bekele W, Babiker E, Gnanesh B, Foresman B, Blanchard S, Jay J, Reid R, Wight C, Chao S, Oliver R, Islamovic E, Kolb F, McCartney C, Fetch JM, Beattie A, Bjornstad A, Bonman J, Langdon T, Howarth C, Brouwer C, Jellen E, Klos KE, Poland J, Hsieh T-F, Brown R, Jackson E, Schlueter J, Tinker N (2016) A consensus map in cultivated hexaploid oat reveals conserved grass synteny with substantial sub-genome rearrangement. The Plant Genome, 9:1-21
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.
Hordeum
Barley (Hordeum vulgare)
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.
Islamovic E, Obert DE, Oliver RE, Marshall JM, Miclaus KJ, Hang A, Chao S, Lazo G, Harrison SA, Ibrahim A, Jellen EN, Maughan PJ, Brown RH, Jackson EW (2013) A new genetic linkage map of barley (Hordeum vulgare L.) facilitates genetic dissection of height and spike length and angle.Field Crops Research 154: 91-99.