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ARS Home Midwest Area West Lafayette, Indiana Crop Production and Pest Control Research People







Karen  Hudson    Research Molecular Biologist /ARSUserFiles/50200500/Personnel Information/Karen.jpg  ProjectsDesigning Soybeans with Enhanced Seed Quality, Plant Health Traits and Climate ResilienceIn-House Appropriated (D)Accession Number:443870Institutional Biological Safety Committee (IBC) Agreement - Purdue UniversityNon-Funded Cooperative Agreement (N)Accession Number:442029Genetic Approaches for Soybean Protein ImprovementNon-Assistance Cooperative Agreement (S)Accession Number:442744  Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)Organ-delimited gene regulatory networks provide high accuracy in candidate TF selection across diverse processes-(Peer Reviewed Journal) Rancan, R., Srijan, S., Balekuttira, S., Agarwal, T., Ramey, M., Dobbins, M., Wang, X., Hudson, K.A., Li, Y., Varala, K. 2024. Organ-delimited gene regulatory networks provide high accuracy in candidate TF selection across diverse processes. Proceedings of the National Academy of Sciences (PNAS). https://doi.org/10.1073/pnas.2322751121.Mutations in KASIIB result in increased levels of palmitic acid in soybean seeds-(Peer Reviewed Journal) Devereaux, R., Carrero-Colon, M., Hudson, K.A. 2024. Mutations in KASIIB result in increased levels of palmitic acid in soybean seeds. Journal of the American Oil Chemists' Society. https://doi.org/10.1002/aocs.12827.Genome-wide association study reveals GmFulb as candidate gene for maturity time and reproductive length in soybeans (Glycine max)-(Peer Reviewed Journal) Escamilla, D., Dietz, N., Bilyeu, K.D., Hudson, K.A., Rainey, K. 2024. Genome-wide association study revealed GmFULb as a candidate gene controlling maturity and reproductive length. PLOS ONE. 19(1). Article e0294123. https://doi.org/10.1371/journal.pone.0294123.Promoter deletion in the soybean Compact mutant leads
to overexpression of a gene with homology to the C20-
gibberellin 2-oxidase family-(Peer Reviewed Journal) Liu, X., Wickland, D., Lin, Z., Liu, Q., Borges Dos Santos, L., Hudson, K.A., Hudson, M.E. 2023. Promoter deletion in the soybean Compact mutant leads to overexpression of a gene with homology to the C20- gibberellin 2-oxidase family. Journal of Experimental Botany. https://doi.org/10.1093/jxb/erad267.Soybean protein and oil variants identified through a forward genetic screen for seed composition-(Peer Reviewed Journal) Hudson, K.A. 2022. Soybean protein and oil variants identified through a forward genetic screen for seed composition. Plants. 11(21). Article 2966. https://doi.org/10.3390/plants11212966.Reduced palmitic acid content in soybean seed as a result of mutation in FATb1a-(Peer Reviewed Journal) Carrero-Colon, M., Hudson, K.A. 2022. Reduced palmitic acid content in soybean seed as a result of mutation in FATb1a. PLoS ONE. 17(3): e0262327. https://doi.org/10.1371/journal.pone.0262327.Genetic variation for seed oil biosynthesis in soybean-(Peer Reviewed Journal) Hudson, K.A., Hudson, M.E. 2021. Genetic variation for seed oil biosynthesis in soybean. Plant Molecular Biology Reporter. https://doi.org/10.1007/s11105-020-01276-1.Combination of the elevated stearic acid trait with other fatty acid traits in soybean-(Peer Reviewed Journal) Gaskin, E.L., Carrero-Colon, M., Hudson, K.A. 2021. Combination of the elevated stearic acid trait with other fatty acid traits in soybean. Journal of the American Oil Chemists' Society (2021). 98:221-226. https://doi.org/10.1002/aocs.12446.Molecular-assisted breeding for improved carbohydrate profiles in soybean seed-(Peer Reviewed Journal) Hagely, K., Jo, H., Kim, J., Hudson, K.A., Bilyeu, K. 2020. Molecular-assisted breeding for improved carbohydrate profiles in soybean seed. Theoretical and Applied Genetics. 133:1189-1200. https://doi.org/10.1007/s00122-020-03541-z.TILLInG by Sequencing: Successful approach to identify rare alleles in soybean populations-(Peer Reviewed Journal) Thapa, R., Carrero-Colon, M., Rainey, K.M., Hudson, K.A. 2019. TILLING by Sequencing: A successful approach to identify rare alleles in soybean populations. Genes 2019. 10(12):1003. https://doi.org/10.3390/genes10121003.Combination of novel FAD3C and FAD3A mutations for low linolenic acid soybeans-(Peer Reviewed Journal) Held, J., Carrero-Colon, M., Hudson, K.A. 2019. Combination of novel FAD3C and FAD3A mutations for low linolenic acid soybeans. Molecular Breeding. 2:190006. https://doi.org/10.2134/age2019.01.0006.New alleles of FAD3A confer reduced linolenic acid trait to soybean seeds-(Peer Reviewed Journal) Thapa, R., Carrero-Colon, M., Addo-Quaye, C., Held, J., Dilkes, B., Hudson, K.A. 2018. New alleles of FAD3A confer reduced linolenic acid trait to soybean seeds. Crop Science. 58(2):713-718. https://doi.org/10.2135/cropsci2017.08.0490.Transcriptional profiling of mechanically and genetically sink-limited soybeans-(Peer Reviewed Journal) Brown, A., Hudson, K.A. 2017. Transcriptional profiling of mechanically and genetically sink-limited soybeans. Plant Cell and Environment. doi:10.1111/pce.13030.New alleles of FATB-1A to reduce palmitic acid levels in soybean-(Peer Reviewed Journal) Thapa, R., Carrero-Colon, M., Hudson, K.A. 2016. New alleles of FATB-1A to reduce palmitic acid levels in soybean. Crop Science. 56:1-5.Novel FAD2-1A alleles confer an elevated oleic acid phenotype in soybean seeds-(Peer Reviewed Journal) Thapa, R., Carrero-Colon, M., Crowe, M.D., Gaskin, E.L., Hudson, K.A. 2015. Novel FAD2-1A alleles confer an elevated oleic acid phenotype in soybean seeds. Crop Science. 56:226-231.Developmental profiling of gene expression in soybean trifoliate leaves and cotyledons-(Peer Reviewed Journal) Brown, A.V., Hudson, K.A. 2015. Developmental profiling of gene expression in soybean trifoliate leaves and cotyledons. Biomed Central (BMC) Plant Biology. 15:169.A classification of basic helix-loop-helix transcription factors of soybean-(Peer Reviewed Journal) Hudson, K.A., Hudson, M.E. 2015. A classification of basic helix-loop-helix transcription factors of soybean. International Journal of Genomics. Article ID 603182:1-10. doi:10.1155/2015/603182.Mutations in SACPD-C result in a range of elevated stearic acid concentration in soybean seed-(Peer Reviewed Journal) Carrero-Colon, M., Abshire, N., Sweeney, D., Gaskin, E., Hudson, K.A. 2014. Mutations in SACPD-C result in a range of elevated stearic acid concentration in soybean seed. PLoS One. 9(5): e97891. DOI:10.1371/journal.pone.0097891.The basic helix-loop-helix transcription factor family in the sacred lotus, Nelumbo nucifera-(Peer Reviewed Journal) Hudson, K.A., Hudson, M. 2014. The basic helix-loop-helix transcription factor family in the sacred lotus, Nelumbo nucifera. Tropical Plant Biology. 7(2):65-70.The genome of the long-living Sacred lotus (Nelumbo nucifera, Gaertn.)-(Peer Reviewed Journal) Ming, R., VanBuren, R., Liu, Y., Yang, M., Han, Y., Li, L.T., Zhang, Q., Kim, M.J., Schatz, M.C., Campbell, M., Li, J., Bowers, J.E., Tang, H., Lyons, E., Ferguson, A.A., Narzisi, G., Nelson, D.R., Blaby-Haas, C.E., Gschwend, A.R., Jiao, Y., Der, J.P., Zeng, F., Han, J., Min, X.J., Hudson, K.A., Singh, R., Grennan, A.K., Karpowicz, S.J., Watling, J.R., Ito, K., Robinson, S.A., Hudson, M.E., Yu, Q., Mockler, T.C., Carroll, A., Zheng, Y., Sunkar, R., Jia, R., Chen, N., Arro, J., Wai, C.M., Wafula, E., Spence, A., Han, Y., Xu, L., Zhang, J., Peery, R., Haus, M., Xiong, W., Walsh, J.A., Wu, J., Wang, M.L., Zhu, Y.J., Paull, R.E., Britt, A.B., Du, C., Downie, S.R., Schuler, M.A., Michael, T.P., Long, S.P., Ort, D.R., Schopf, J.W., Gang, D.R., Jiang, N., Yandell, M., dePamphilis, C.W., Merchant, S.S., Paterson, A.H., Buchanan, B.B., Li, S., Shen-Miller, J. 2013. Genome of the long-living sacred lotus (Nelumbo nucifera, Gaertn.). Genome Biology. 14(5):R41. DOI:10.1186/gb-2013-14-5-r41.Ionomic screening of field-grown soybeans identifies mutants with altered seed elemental composition-(Peer Reviewed Journal) Ziegler, G., Terauchi, A.M., Becker, A., Armstrong, P.R., Hudson, K.A., Baxter, I.R. 2012. Ionomic screening of field-grown soybeans identifies mutants with altered seed elemental composition. The Plant Genome. 6(2):1-9.Mutations in soybean KASIIa gene are correlated with high levels of seed palmitic acid-(Peer Reviewed Journal) Head, K., Galos, T., Fang, Y., Hudson, K.A. 2012. Mutations in soybean KASIIa gene are correlated with high levels of seed palmitic acid. Molecular Breeding. doi:1007/s11032-012-9707-x.New soybean variants in oil composition identified by large scale mutagenesis-(Peer Reviewed Journal) Hudson, K.A. 2012. New soybean variants in oil composition identified by large scale mutagenesis. International Journal of Agronomy. doi:10.1155/2012/569817.Changes in global gene expression in response to chemical and genetic perturbation of chromatin structure-(Peer Reviewed Journal) Hudson, K.A., Luo, S., Hagemann, N., Preuss, D. 2011. Changes in global gene expression in response to chemical and genetic perturbation of chromatin structure. Website: http://www.plosgenetics.org/search/simpleSearch.action?from=globalSimpleSearch&filterJournals=PLoSGenetics&query=Changes+in+global+gene+expression+in+response+to+chemical+and+genetic+perturbation+of+chromatin+structure&x=14&y=24The Circadian Clock-Controlled Transcriptome of Developing Soybean Seeds.-(Peer Reviewed Journal) Hudson, K.A. 2010. The Circadian Clock-Controlled Transcriptome of Developing Soybean Seeds. The Plant Genome. 3(1):1-11.Fine Mapping the Soybean Aphid Resistance Gene Rag1 in Soybean-(Peer Reviewed Journal) Kim, K.S., Bellendir, S., Hudson, K. A., Hill, C.B., Hartman, G.L., Hyten, D., Hudson, M.E., Diers, B.W. 2010. Fine mapping the soybean aphid resistance gene Rag1 in soybean. Theoretical and Applied Genetics. 20(5):1063-1071.Microarray-Based Genetic Mapping Using Soybean Near-Isogenic Lines and Generation of SNP Markers in the Rag1 Aphid-Resistance Interval-(Peer Reviewed Journal) Hudson, K.A., Kim, K., Diers, B., Hudson, M. 2009. Microarray-Based Genetic Mapping Using Soybean Near-Isogenic Lines and Generation of SNP Markers in the Rag1 Aphid-Resistance Interval. The Plant Genome. 1:89-98.  ARS News ArticlesNo news articles listed for this employee.
 Karen Hudson Dr. Hudson’s research interest is the improvement of soybean seed composition while maintaining high yield of protein and oil. The laboratory 1) uses genetic approaches to create new sources for high protein and other value-added traits in soybean seed, and 2) uses molecular biology to dissect the environmental and genetic control of resource allocation within the soybean plant. Our translational research strives to bridge the gap between allele discovery and the incorporation of novel genes into improved soybean lines. **Phone:** 765-494-8057 **Email:** karen.hudson@usda.gov  **Education:** BS: Biology, 1997 University of Maryland, Baltimore County https://umbc.edu PhD: Plant Biology, 2004 University of California, Berkeley https://www.berkeley.edu


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