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Lisa  Hill    Microbiologist /ARSUserFiles/42028/lisalab2.264x331.jpg Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)A power analysis for detecting aging of dry-stored soybean seeds: Germination versus RNA integrity assessments-(Peer Reviewed Journal) Tetreault, H.M., Fleming, M.B., Hill, L.M., Dorr, E.J., Yeater, K.M., Richards, C.M., Walters, C.T. 2022. A power analysis for detecting aging of dry-stored soybean seeds: Germination versus RNA integrity assessments. Crop Science. 63(3):1481-1493. https://doi.org/10.1002/csc2.20821.Stress-response relationships related to aging and death of orthodox seeds: A study comparing viability and RNA integrity in soybean (Glycine max) cv. Williams 82-(Peer Reviewed Journal) Walters, C.T., Fleming, M.B., Hill, L.M., Dorr, E.J., Richards, C.M. 2020. Stress-response relationships related to aging and death of orthodox seeds: A study comparing viability and RNA integrity in soybean (Glycine max) cv. Williams 82. Seed Science Research. 30(2):161-172. https://doi.org/10.1017/S0960258520000197.The kinetics of aging in dry-stored seeds: a comparison of viability loss and RNA degradation in unique ‘legacy’ seed collections-(Peer Reviewed Journal) Fleming, M.B., Hill, L.M., Walters, C.T. 2018. The kinetics of aging in dry-stored seeds: a comparison of viability loss and RNA degradation in unique ‘legacy’ seed collections. Annals Of Botany. 123:1133-1146. https://doi.org/10.1093/aob/mcy217.Longevity of preserved germplasm: The temperature dependency of aging reactions in glassy matrices of dried fern spores-(Peer Reviewed Journal) Ballesteros, D., Hill, L.M., Lynch, R.T., Pence, V., Pritchard, H., Walters, C.T. 2018. Longevity of preserved germplasm: The temperature dependency of aging reactions in glassy matrices of dried fern spores. Plant and Cell Physiology. 60(2):376-392. https://doi.org/10.1093/pcp/pcy217.Seed biology influences recruitment, demography, restoration success, and population persistence of endangered Dalea carthagenensis var. floridana (Fabaceae)-(Peer Reviewed Journal) Maschinski, J., Possley, J., Walters, C.T., Hill, L.M., Walters, D., Kreuger, L., Hazelton, D. 2017. Seed biology influences recruitment, demography, restoration success, and population persistence of endangered Dalea carthagenensis var. floridana (Fabaceae). Restoration Ecology. 26: 636-641.Variation of desiccation tolerance and longevity in fern spores-(Peer Reviewed Journal) Ballesteros, D., Hill, L.M., Walters, C.T. 2017. Variation of desiccation tolerance and longevity in fern spores. Journal of Plant Physiology. 211:53-62 doi.org/10.1016/j.jplph.2017.01.003.Preserving oak (Quercus sp.) germplasm to promote ex situ conservation-(Peer Reviewed Journal) Walters, C.T., Crane, J., Hill, L.M., Michalak, M., Carstens, J.D., Conrad, K.P. 2016. Preserving oak (Quercus sp.) germplasm to promote ex situ conservation. International Oaks. 27:255-266..Volatile emission in dry seeds as a way to probe chemical reactions during initial asymptomatic deterioration-(Peer Reviewed Journal) Mira, S., Hill, L.M., Gonzalez-Benito, M., Ibanez, M.A., Walters, C.T. 2016. Volatile emission in dry seeds as a way to probe chemical reactions during initial asymptomatic deterioration. Journal of Experimental Botany. 67(6):1783-1793.Factors affecting stress tolerance in recalcitrant embryonic axes from four Quercus (Fagaceae) species native to the US or China-(Peer Reviewed Journal) Xia, K., Hill, L.M., Decorte, A., Li, D., Walters, C.T. 2014. Factors affecting stress tolerance in recalcitrant embryonic axes from four Quercus (Fagaceae) species native to the US or China. Annals Of Botany. 114(8):1747-1759.Factors affecting stress tolerance in recalcitrant embryonic axes from four Quercus (Fagaceae) species native to the US or China-(Peer Reviewed Journal) Xia, K., Hill, L.M., Li, D., Walters, C.T. 2014. Factors affecting stress tolerance in recalcitrant embryonic axes from four Quercus (Fagaceae) species native to the US or China. Annals Of Botany. 114(8):1747-1759. DOI: 10.1093/aob/mcu193."Intermediate" seed storage physiology: populus as a natural model system-(Abstract Only) Hill, L.M., Haiby, K., Volk, G.M., Walters, C.T. 2013. "Intermediate" seed storage physiology: populus as a natural model system. International Society for Horticultural Science Meeting. p.88.Cryopreservation of recalcitrant seeds:  factors affecting survival of embryonic axes from four Quercus (Fagaceae) species native to the US or China-(Abstract Only) Xia, K., Hill, L.M., Decorte, A., Zhou, Z., Walters, C.T. 2013. Cryopreservation of recalcitrant seeds:  factors affecting survival of embryonic axes from four Quercus (Fagaceae) species native to the US or China. International Society for Horticultural Science Meeting. p. 107.An analysis of embryo development in palm: interactions between dry matter accumulation and water relations in Pritchardia remota (Arecaceae)-(Peer Reviewed Journal) Perez, H.E., Hill, L.M., Walters, C.T. 2012. An analysis of embryo development in palm: interactions between dry matter accumulation and water relations in Pritchardia remota (Arecaceae). Seed Science Research. 22:97-111.Probing the biology of dry biological systems to address the basis of seed longevity-(Abstract Only)Some thoughts about the desiccation tolerance continuum and the basis for “intermediate” seed physiologies-(Abstract Only)Limits of desiccation tolerance in developing embryos of Pritchardia remota (Arecaceae): the orthodox-recalcitrant seed paradigm-(Peer Reviewed Journal)"Intermediate" seed storage physiology: populus as a natural model system-(Abstract Only) Walters, C.T., Hill, L.M., Volk, G.M., Haiby, K. 2011. "Intermediate" seed storage physiology: populus as a natural model system. Meeting Abstract. International Society for Seed Science, Bahia, Brazil Apr 10-15, 2011. pp. 280.Comparisons of seed longevity under simulated aging and genebank storage conditions using brassicaceae seeds-(Abstract Only) Walters, C.T., Hill, L.M., Koster, K.L., Bender, J. 2011. Comparisons of seed longevity under simulated aging and genebank storage conditions using brassicaceae seeds. Meeting Abstract. International Society for Seed Science, Bahia, Brazil, April 10-15, 2011. pp 279.The ex situ conservation strategy for endangered plant species: small samples, storage and lessons from seed collected from US national parks-(Abstract Only) Walters, C.T., Kennedy, K., Brian, N., Strong, A., Hill, L.M., Luhman, R., Mehrhoff, L., Dratch, P., Raven, P. 2011. The ex situ conservation strategy for endangered plant species: small samples, storage and lessons from seed collected from US national parks. Meeting Abstract. International Society for Seed Science , Bahia, Brazil April 10-15, 2011. pp.100.Characterization of volatile production during storage of lettuce (Lactuca sativa) seed-(Peer Reviewed Journal) Mira, S., Gonzalez-Benito, E., Hill, L.M., Walters, C.T. 2010. Characterization of volatile production during storage of lettuce (Lactuca sativa) seed. Journal of Experimental Botany. 61:3915-3924.Cryopreservation of fern spores-(Abstract Only) Ballesteros, D., Hill, L.M., Ibars, A.M., Estrelles, E., Walters, C.T. 2010. Cryopreservation of fern spores. Meeting Abstract. Society for Cryobiology, July 17-20, 2010. Bristol UK.  pp. P076.Water-triacylglycerol interactions affect oil body structure and seed viability-(Abstract Only) Walters, C.T., Crane, J., Volk, G.M., Ballesteros, D., Hill, L.M., Miller, A.L., Wiesneberger, L., Yoshinaga, A., Eira, M., Gardner, C.A., Zee, F.T., Coonrod, D. 2010. Water-triacylglycerol interactions affect oil body structure and seed viability [abstract]. Frontiers in Water Biophysics. p. 138-139.Assessment of Variation in Seed Longevity within Rye, Wheat and the Intergeneric Hybrid Triticale-(Peer Reviewed Journal) Niedzielski, M., Walters, C.T., Luczak, W., Hill, L.M., Wheeler, L.J., Puchalski, J. Assessment of Variation in Seed Longevity within Rye, Wheat and the Intergeneric Hybrid Triticale. Seed Science Research. 19:213-224.Seed Storage Containers: Implications of water permeability properties on moisture management-(Abstract Only) Walters, C.T., Hill, L.M. Seed Storage Containers: Implications of water permeability properties on moisture management. Seed Technologists Newsletter. 83 (2):23. Association of Official Seed Analysts and Society for Commercial Seed Technologists. May 29-June 4, 2009. Fort Collins, Colorado. Meeting Abstract.VARIATION OF SEED AGING RATES AMONG LINES OF WHEAT, RYE AND TRITICALE IN RESPONSE TO STORAGE HUMIDITY-(Abstract Only) Niedziekski, M.,Waters, C.T., Luczak, C.,L.M. Hill, Puchalski, J. 2008. Variation of seed aging rates among lines of wheat, rye and triticale in response to storage humidity. 9th International Society for Seed Science Conference on Seed Biology. July 6-11, 2008. Olsztyn, Poland. pp. 94-95. Meeting Abstract.TEMPERATURE AND MOISTURE CONTROL OF SEED AGING IN RYE-(Abstract Only) Walters, C.T., Niedziekski, M., Hill, L.M., Wheeler, L.J., Puchalski, J. 2008. Temperature and moisture control of seed aging in rye. 9th International Society for Seed Science Conference on Seed Biology. July 6-11, 2008. Olsztyn, Poland. pp. 281. Meeting Abstract.PHYSIOLOGICAL ASPECTS OF SEED DEVELOPMENT IN A HAWAIIAN PALM-(Abstract Only) Perez, H., Hill, L.M., Criley, R., Baskin, C., Drake, D., Kobayashi, K., Maunder, M., Walters, C.T. 2008. Physiological aspects of seed development in a hawaiian palm. 9th International Conference on Seed Biology. July 6-11, 2008. Olsztyn, Poland. pp. 135. Meeting Abstract.STORAGE BEHAVIOR OF SEEDS FROM NATIVE HAWAIIAN TAXA-(Abstract Only) Weisenberger, L. Hill, L.M., Yoshinaga, A., Wood, K., Walters, C.T. 2008. Storage behavior of seeds from native hawaiian taxa. 9th International Conference on Seed Biology. July 6-11, 2008. Olsztyn, Poland. pp. 281-282. Meeting Abstract.SEED DETERIORATION INCREASES IN THE PRESENCE OF VOLATILES-(Abstract Only) Mira, S., Walters, C.T., Hill, L.M., Estrelles, E., Gonzalez-Benito, M.E. 2008. Seed deterioration increases in the presence of volatiles. 9th International Society for Seed Science Conference on Seed Biology. July 6-11, 2008. Olsztyn, Poland. pp. 89. Meeting Abstract.WATER CONTENT-TEMPERATURE INTERACTIONS REGULATE SEED AGING-(Abstract Only) Walters, C.T., Hill, L.M., Wheeler, L.J., Rao, N.K., Hu, X., Dulloo, M.E., Engels, J.M.M. 2008. Water content-temperature interactions regulate seed aging. 9th International Conference on Seed Biology. July 6-11, 2008. Olsztyn, Poland. pp. 280. Meeting AbstractCryopreservation of Recalcitrant (i.e. Desiccation-Sensitive) Seeds-(Book / Chapter) Walters C, J. Wesley-Smith, J. Crane, L.M. Hill, P. Chmielarz, N.W. Pammenter and P. Berjak. 2008. Cryopreservation of recalcitrant (i.e. desiccation-sensitive) seeds. pp. 465-484. In B. Reed (ed.) Plant Cryopreservation: A practical guide. Springer Publishing, New York, NY.MASSIVE CELLULAR DISRUPTION OCCURS DURING EARLY IMBIBITION OF CUPHEA SEEDS CONTAINING CRYSTALLIZED TRIACYLGLYCEROLS-(Peer Reviewed Journal) Volk, G.M., J. Crane, A.M. Caspersen, L.M. Hill, C.A. Gardner and C. Walters. 2006. Massive cellular disruption occurs during early imbibition of Cuphea seeds containing crystallized triacylglycerols. Planta 224:1415-1426.DYING WHILE DRY: KINETICS AND MECHANISMS OF DETERIORATION IN DESICCATED ORGANISMS-(Peer Reviewed Journal) Walters, C., L.M. Hill and L.J. Wheeler. 2005. Dying while dry: kinetics and mechanisms of deterioration in desiccated organisms. Integrative and Comparative Biology 45(5):751-758.ORGANIZATION OF LIPID RESERVES IN COTYLEDONS OF PRIMED AND AGED SUNFLOWER SEEDS-(Peer Reviewed Journal) Walters, C., P. Landre, L.M. Hill, F. Corbineau and C. Bailly. 2005. Organization of lipid reserves in cotyledons of primed and aged sunflower seeds. Planta 222:397-407.CONSERVATION OF GENETIC RESOURCES OF COFFEE USING CRYOPRESERVATION-(Abstract Only) Mirian E.TS., C. Walters R.B. Reis, and L.M. Hill. 2002. Conservation of genetic resources of coffee using cryopresvation. 7th International Workshop on Seed Biology, May 11-19, 2002, Salamanca, Spain. Lab group: Dr. Christina Walters Ensuring that seed and pollen samples that come to NLGRP are alive - and stay alive - is one of NLGRP's top priorities. I manage the labs that perform viability testing on seeds in the United States national collection, as well as on research material like seeds, pollen, and fern spores, which are used to improve storage methods and aging detection. Some of our biggest challenges come from wild plant species, many of which are rare or endangered. I work with diversity: in plant material, researchers, seed analysts, data managers and new technologies, all geared towards keeping the collection alive and healthy.


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