@article{dewitt_lyerly_guedira_holland_murphy_ward_boyles_mergoum_babar_shakiba_et al._2023, title={Bearded or smooth? Awns improve yield when wheat experiences heat stress during grain fill in the southeastern United States}, volume={74}, ISSN={["1460-2431"]}, url={https://doi.org/10.1093/jxb/erad318}, DOI={10.1093/jxb/erad318}, abstractNote={Abstract}, number={21}, journal={JOURNAL OF EXPERIMENTAL BOTANY}, author={DeWitt, Noah and Lyerly, Jeanette and Guedira, Mohammed and Holland, James B. and Murphy, J. Paul and Ward, Brian P. and Boyles, Richard E. and Mergoum, Mohamed and Babar, Md Ali and Shakiba, Ehsan and et al.}, editor={Dreisigacker, SusanneEditor}, year={2023}, month={Nov}, pages={6749–6759} }
 @article{dewitt_guedira_murphy_marshall_mergoum_maltecca_brown-guedira_2022, title={A network modeling approach provides insights into the environment-specific yield architecture of wheat}, volume={5}, ISSN={["1943-2631"]}, url={https://doi.org/10.1093/genetics/iyac076}, DOI={10.1093/genetics/iyac076}, abstractNote={Abstract}, number={3}, journal={GENETICS}, author={DeWitt, Noah and Guedira, Mohammed and Murphy, Joseph Paul and Marshall, David and Mergoum, Mohamed and Maltecca, Christian and Brown-Guedira, Gina}, editor={Juenger, TEditor}, year={2022}, month={May} }
 @article{dewitt_guedira_lauer_murphy_marshall_mergoum_johnson_holland_brown-guedira_2021, title={Characterizing the oligogenic architecture of plant growth phenotypes informs genomic selection approaches in a common wheat population}, volume={22}, ISSN={["1471-2164"]}, DOI={10.1186/s12864-021-07574-6}, abstractNote={Abstract}, number={1}, journal={BMC GENOMICS}, author={DeWitt, Noah and Guedira, Mohammed and Lauer, Edwin and Murphy, J. Paul and Marshall, David and Mergoum, Mohamed and Johnson, Jerry and Holland, James B. and Brown-Guedira, Gina}, year={2021}, month={May} }
 @article{dewitt_guedira_lauer_sarinelli_tyagi_fu_hao_murphy_marshall_akhunova_et al._2020, title={Sequence-based mapping identifies a candidate transcription repressor underlying awn suppression at the B1 locus in wheat}, volume={225}, ISSN={["1469-8137"]}, DOI={10.1111/nph.16152}, abstractNote={Summary}, number={1}, journal={NEW PHYTOLOGIST}, author={DeWitt, Noah and Guedira, Mohammed and Lauer, Edwin and Sarinelli, Martin and Tyagi, Priyanka and Fu, Daolin and Hao, QunQun and Murphy, J. Paul and Marshall, David and Akhunova, Alina and et al.}, year={2020}, month={Jan}, pages={326–339} }
 @article{mason_addison_babar_acuna_lozada_subramanian_arguello_miller_brown-guedira_guedira_et al._2018, title={Diagnostic Markers for Vernalization and Photoperiod Loci Improve Genomic Selection for Grain Yield and Spectral Reflectance in Wheat}, volume={58}, ISSN={["1435-0653"]}, DOI={10.2135/cropsci2017.06.0348}, abstractNote={ABSTRACT}, number={1}, journal={CROP SCIENCE}, author={Mason, R. Esten and Addison, Christopher K. and Babar, Ali and Acuna, Andrea and Lozada, Dennis and Subramanian, Nithya and Arguello, Maria Nelly and Miller, Randall G. and Brown-Guedira, Gina and Guedira, Mohammed and et al.}, year={2018}, pages={242–252} }
 @article{kippes_guedira_lin_alvarez_brown-guedira_dubcovsky_2018, title={Single nucleotide polymorphisms in a regulatory site of VRN-A1 first intron are associated with differences in vernalization requirement in winter wheat}, volume={293}, ISSN={["1617-4623"]}, DOI={10.1007/s00438-018-1455-0}, abstractNote={Winter wheats require a long exposure to cold temperatures (vernalization) to accelerate flowering. However, varieties differ in the length of the period of cold required to saturate the vernalization response. Here we show that single nucleotide polymorphisms (SNP) at the binding site of the GRP2 protein in the VRN-A1 first intron (henceforth, RIP3) are associated with significant differences in heading time after a partial vernalization treatment. The ancestral winter VRN-A1 allele in 'Triple Dirk C' has one SNP in the RIP3 region (1_SNP) relative to the canonical RIP3 sequence, whereas the derived 'Jagger' allele has three SNPs (3_SNPs). Both varieties have a single VRN-A1 copy encoding identical proteins. In an F2 population generated from a cross between these two varieties, plants with the 3_SNPs haplotype headed significantly earlier (P < 0.001) than those with the 1_SNP haplotype, both in the absence of vernalization (17 days difference) and after 3-weeks of vernalization (11 days difference). Plants with the 3_SNPs haplotype showed higher VRN-A1 transcript levels than those with the 1_SNP haplotype. The 3_SNPs haplotype was also associated with early heading in a panel of 127 winter wheat varieties grown in three separate controlled-environment experiments under partial vernalization (36 to 54 days, P < 0.001) and one experiment under field conditions (21 d, P < 0.0001). The RIP3 polymorphisms can be used by wheat breeders to develop winter wheat varieties adapted to regions with different duration or intensity of the cold season.}, number={5}, journal={MOLECULAR GENETICS AND GENOMICS}, author={Kippes, Nestor and Guedira, Mohammed and Lin, Lijuan and Alvarez, Maria A. and Brown-Guedira, Gina L. and Dubcovsky, Jorge}, year={2018}, month={Oct}, pages={1231–1243} }
 @article{guedira_xiong_hao_johnson_harrison_marshall_brown-guedira_2016, title={Heading Date QTL in Winter Wheat (Triticum aestivum L.) Coincide with Major Developmental Genes VERNALIZATION1 and PHOTOPERIOD1}, volume={11}, ISSN={["1932-6203"]}, DOI={10.1371/journal.pone.0154242}, abstractNote={In wheat (Triticum aestivum L.), time from planting to spike emergence is influenced by genes controlling vernalization requirement and photoperiod response. Characterizing the available genetic diversity of known and novel alleles of VERNALIZATION1 (VRN1) and PHOTOPERIOD1 (PPD1) in winter wheat can inform approaches for breeding climate resilient cultivars. This study identified QTL for heading date (HD) associated with multiple VRN1 and PPD1 loci in a population developed from a cross between two early flowering winter wheat cultivars. When the population was grown in the greenhouse after partial vernalization treatment, major heading date QTLs co-located with the VRN-A1 and VRN-B1 loci. Copy number variation at the VRN-A1 locus influenced HD such that RIL having three copies required longer cold exposure to transition to flowering than RIL having two VRN-A1 copies. Sequencing vrn-B1 winter alleles of the parents revealed multiple polymorphisms in the first intron that were the basis of mapping a major HD QTL coinciding with VRN-B1. A 36 bp deletion in the first intron of VRN-B1 was associated with earlier HD after partial vernalization in lines having either two or three haploid copies of VRN-A1. The VRN1 loci interacted significantly and influenced time to heading in field experiments in Louisiana, Georgia and North Carolina. The PPD1 loci were significant determinants of heading date in the fully vernalized treatment in the greenhouse and in all field environments. Heading date QTL were associated with alleles having large deletions in the upstream regions of PPD-A1 and PPD-D1 and with copy number variants at the PPD-B1 locus. The PPD-D1 locus was determined to have the largest genetic effect, followed by PPD-A1 and PPD-B1. Our results demonstrate that VRN1 and PPD1 alleles of varying strength allow fine tuning of flowering time in diverse winter wheat growing environments.}, number={5}, journal={PLOS ONE}, author={Guedira, Mohammed and Xiong, Mai and Hao, Yuan Feng and Johnson, Jerry and Harrison, Steve and Marshall, David and Brown-Guedira, Gina}, year={2016}, month={May} }
 @article{addison_mason_brown-guedira_guedira_hao_miller_subramanian_lozada_acuna_arguello_et al._2016, title={QTL and major genes influencing grain yield potential in soft red winter wheat adapted to the southern United States}, volume={209}, ISSN={["1573-5060"]}, DOI={10.1007/s10681-016-1650-1}, number={3}, journal={EUPHYTICA}, author={Addison, Christopher K. and Mason, R. Esten and Brown-Guedira, Gina and Guedira, Mohammed and Hao, Yuanfeng and Miller, Randall G. and Subramanian, Nithya and Lozada, Dennis N. and Acuna, Andrea and Arguello, Maria N. and et al.}, year={2016}, month={Jun}, pages={665–677} }
 @article{hao_parks_cowger_chen_wang_bland_murphy_guedira_brown-guedira_johnson_et al._2015, title={Molecular characterization of a new powdery mildew resistance gene Pm54 in soft red winter wheat}, volume={128}, ISSN={["1432-2242"]}, DOI={10.1007/s00122-014-2445-1}, abstractNote={A new powdery mildew resistance gene Pm54 was identified on chromosome 6BL in soft red winter wheat. Powdery mildew is causing increasing damage to wheat production in the southeastern USA. To combat the disease, a continuing need exists to discover new genes for powdery mildew resistance and to incorporate those genes into breeding programs. Pioneer(®) variety 26R61 (shortened as 26R61) and AGS 2000 have been used as checks in the Uniform Southern Soft Red Winter Wheat Nursery for a decade, and both have provided good resistance across regions during that time. In the present study, a genetic analysis of mildew resistance was conducted on a RIL population developed from a cross of 26R61 and AGS 2000. Phenotypic evaluation was conducted in the field at Plains, GA, and Raleigh, NC, in 2012 and 2013, a total of four environments. Three quantitative trait loci (QTL) with major effect were consistently detected on wheat chromosomes 2BL, 4A and 6BL. The 2BL QTL contributed by 26R61 was different from Pm6, a widely used gene in the southeastern USA. The other two QTL were identified from AGS 2000. The 6BL QTL was subsequently characterized as a simple Mendelian factor when the population was inoculated with a single Blumeria graminis f. sp. tritici (Bgt) isolate in controlled environments. Since there is no known powdery mildew resistance gene (Pm) on this particular location of common wheat, the gene was designated Pm54. The closely linked marker Xbarc134 was highly polymorphic in a set of mildew differentials, indicating that the marker should be useful for pyramiding Pm54 with other Pm genes by marker-assisted selection.}, number={3}, journal={THEORETICAL AND APPLIED GENETICS}, author={Hao, Y. F. and Parks, R. and Cowger, C. and Chen, Z. B. and Wang, Y. Y. and Bland, D. and Murphy, J. P. and Guedira, M. and Brown-Guedira, Gina and Johnson, J. and et al.}, year={2015}, month={Mar}, pages={465–476} }
 @article{guedira_maloney_xiong_petersen_murphy_marshall_johnson_harrison_brown-guedira_2014, title={Vernalization Duration Requirement in Soft Winter Wheat is Associated with Variation at the VRN-B1 Locus}, volume={54}, ISSN={["1435-0653"]}, DOI={10.2135/cropsci2013.12.0833}, abstractNote={ABSTRACT}, number={5}, journal={CROP SCIENCE}, author={Guedira, Mohammed and Maloney, Peter and Xiong, Mai and Petersen, Stine and Murphy, J. Paul and Marshall, David and Johnson, Jerry and Harrison, Steve and Brown-Guedira, Gina}, year={2014}, pages={1960–1971} }
 @article{guedira_brown-guedira_van sanford_sneller_souza_marshall_2010, title={Distribution of Rht Genes in Modern and Historic Winter Wheat Cultivars from the Eastern and Central USA}, volume={50}, ISSN={["1435-0653"]}, DOI={10.2135/cropsci2009.10.0626}, abstractNote={ABSTRACT}, number={5}, journal={CROP SCIENCE}, author={Guedira, M. and Brown-Guedira, G. and Van Sanford, D. and Sneller, C. and Souza, E. and Marshall, D.}, year={2010}, pages={1811–1822} }