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Your Environment. Your Health.

Person Details: Tracy Punshon

Superfund Research Program

Tracy Punshon

Dartmouth College
Department of Biological Sciences
Class of '78 Life Sciences Center, Room 024
Hanover, New Hampshire 03755
Phone: 603-646-1037






  • Everson TM, Marable C, Deyssenroth MA, Punshon T, Jackson BP, Lambertini L, Karagas MR, Chen J, Marsit CJ. 2019. Placental expression of imprinted genes, overall and in sex-specific patterns, associated with placental cadmium concentrations and birth size. Environ Health Perspect 127:57005. doi:10.1289/EHP4264 PMID:31082282 PMCID:PMC6791491
  • Karagas MR, Punshon T, Davis M, Bulka C, Slaughter F, Karalis D, Argos M, Ahsan H. 2019. Rice intake and emerging concerns on arsenic in rice: A review of the human evidence and methodologic challenges. Curr Environ Health Rep 6:361-72. doi:10.1007/s40572-019-00249-1 PMID:31760590
  • Kennedy E, Everson TM, Punshon T, Jackson BP, Hao K, Lambertini L, Chen J, Karagas MR, Marsit CJ. 2019. Copper associates with differential methylation in placentae from two US birth cohorts. Epigenetics 1-16. doi:10.1080/15592294.2019.1661211 PMID:31462129
  • Lee JW, Moen EL, Punshon T, Hoen AG, Stewart D, Li H, Karagas MR, Gui J. 2019. An integrated gaussian graphical model to evaluate the impact of exposures on metabolic networks. Comput Biol Med 114:103417. doi:10.1016/j.compbiomed.2019.103417 PMID:31521894 PMCID:PMC6817396
  • Punshon T, Li Z, Jackson BP, Parks WT, Romano M, Conway DC, Baker E, Karagas MR. 2019. Placental metal concentrations in relation to placental growth, efficiency and birth weight. Environ Int 126:533-542. doi:10.1016/j.envint.2019.01.063 PMID:30851484 (ahead of print)


  • Caito SW, Jackson BP, Punshon T, Scrimale T, Grier A, Gill SR, Love TM, Watson GE, van Wijngaarden E, Rand MD. 2018. Variation in methylmercury metabolism and elimination status in humans following fish consumption. Toxicol Sci 161:443-453. doi:10.1093/toxsci/kfx226 PMID:29145616 PMCID:PMC5837402
  • Everson TM, Punshon T, Jackson BP, Hao K, Lambertini L, Chen J, Karagas MR, Marsit CJ. 2018. Cadmium-associated differential methylation throughout the placental genome: epigenome-wide association study of two U.S. birth cohorts. Environ Health Perspect 126(1):017010. doi:10.1289/EHP2192 PMID:29373860 PMCID:PMC6014712
  • Kopittke PM, Punshon T, Paterson DJ, Tappero R, Wang P, Blamey FP, van der Ent A, Lombi E. 2018. Synchrotron-based X-ray fluorescence microscopy as a technique for imaging of elements in plants. Plant Physiol 178(2):507-523. doi:10.1104/pp.18.00759 PMID:30108140 PMCID:PMC6181034
  • Nachman KE, Punshon T, Rardin LR, Signes-Pastor AJ, Murray CJ, Jackson BP, Guerinot ML, Burke TA, Chen CY, Ahsan H, Argos M, Cottingham KL, Cubadda F, Ginsberg GL, Goodale BC, Kurzius-Spencer M, Meharg AA, Miller M, Nigra AE, Pendergrast CB, Raab A, Reimer K, Scheckel KG, Schwerdtle T, Taylor VF, Tokar EJ, Warczak TM, Karagas MR. 2018. Opportunities and challenges for dietary arsenic intervention. Environ Health Perspect 126(8):084503-1-6. doi:10.1289/EHP3997 PMID:30235424 PMCID:PMC6375412
  • Punshon T, Carey A, Ricachenevsky FK, Meharg AA. 2018. Elemental distribution in developing rice grains and the effect of flag-leaf arsenate exposure. Environ Exp Bot 149:51-58. doi:10.1016/j.envexpbot.2018.02.007 PMID:30100643 PMCID:PMC6085101
  • Punshon T, Jackson BP. 2018. Essential micronutrient and toxic trace element concentrations in gluten containing and gluten-free foods. Food Chem 252:258-264. doi:10.1016/j.foodchem.2018.01.120 PMID:29478539 PMCID:PMC5830128
  • Ricachenevsky FK, Punshon T, Lee S, Oliveira BH, Trenz TS, Maraschin FD, Hindt MN, Danku JM, Salt DE, Fett JP, Guerinot ML. 2018. Elemental profiling of rice FOX lines leads to characterization of a new Zn plasma membrane transporter, OsZIP7. Front Plant Sci 9:865. doi:10.3389/fpls.2018.00865 PMID:30018622 PMCID:PMC6037872


  • Chu H, Car S, Socha AL, Hindt MN, Punshon T, Guerinot ML. 2017. The Arabidopsis MTP8 transporter determines the localization of manganese and iron in seeds. Sci Rep 7:10. doi:10.1038/s41598-017-11250-9 PMID:28887568 PMCID:PMC5591227
  • Davis MA, Signes-Pastor AJ, Argos M, Slaughter F, Pendergrast CB, Punshon T, Gossai A, Ahsan H, Karagas MR. 2017. Assessment of human dietary exposure to arsenic through rice. Sci Total Environ 586:1237-1244. doi:10.1016/j.scitotenv.2017.02.119 PMID:28233618 PMCID:PMC5502079
  • Everson TM, Kappil M, Hao K, Jackson BP, Punshon T, Karagas MR, Chen J, Marsit CJ. 2017. Maternal exposure to selenium and cadmium, fetal growth, and placental expression of steroidogenic and apoptotic genes. Environ Res 158:233-244. doi:10.1016/j.envres.2017.06.016 PMID:28662449 PMCID:PMC5554457
  • Gossai A, Zens MS, Punshon T, Jackson BP, Perry AE, Karagas MR. 2017. Rice consumption and squamous cell carcinoma of the skin in a United States population. Environ Health Perspect 125:097005. doi:10.1289/ehp1065 PMID:28934722
  • Hindt MN, Akmakjian GZ, Pivarski KL, Punshon T, Baxter I, Salt DE, Guerinot ML. 2017. BRUTUS and its paralongs, BTS LIKE1 and BTS LIKE2, encode important negative regulators of the iron deficiency response in Arabidopsis thaliana. Metallomics 9:876-890. doi:10.1039/c7mt00152e PMID:28620661
  • Punshon T, Jackson BP, Meharg AA, Warczack T, Scheckel KG, Guerinot ML. 2017. Understanding arsenic dynamics in agronomic systems to predict and prevent uptake by crop plants. Sci Total Environ 581-582:209-220. doi:10.1016/j.scitotenv.2016.12.111 PMID:28043702 PMCID:PMC5303541



  • Jackson BP, Punshon T. 2015. Recent advances in the measurement of arsenic, cadmium, and mercury in rice and other foods. Curr Environ Health Rep 2(1):15-24. doi:10.1007/s40572-014-0035-7 PMID:25938012 PMCID:PMC4412605
  • Mary V, Schnell Ramos M, Gillet C, Socha AL, Giraudat J, Agorio A, Merlot S, Clairet C, Kim SA, Punshon T, Guerinot ML, Thomine S. 2015. Bypassing iron storage in endodermal vacuoles rescues the iron mobilization defect in the natural resistance associated-macrophage protein3natural resistance associated-macrophage protein4 Double Mutant. Plant Physiol 169(1):748-759. doi:10.1104/pp.15.00380 PMID:26232490 PMCID:PMC4577389
  • Punshon T, Chen S, Finney L, Howard L, Jackson BP, Karagas MR, Ornvold K. 2015. High-resolution elemental mapping of human placental chorionic villi using synchrotron X-ray fluorescence spectroscopy. Anal Bioanal Chem 407(22):6839-6850. doi:10.1007/s00216-015-8861-5 PMID:26138895 PMCID:PMC4663034
  • Punshon T, Davis MA, Marsit CJ, Theiler SK, Baker E, Jackson BP, Conway DC, Karagas MR. 2015. Placental arsenic concentrations in relation to both maternal and infant biomarkers of exposure in a US cohort. J Expo Sci Environ Epidemiol 25(6):599-603. doi:10.1038/jes.2015.16 PMID:25805251 PMCID:PMC4583336


  • Cottingham KL, Karimi R, Gruber JF, Zens MS, Sayarath V, Folt CL, Punshon T, Karagas MR, Morris JS. 2013. Diet and toenail arsenic concentrations in a New Hampshire population with arsenic-containing water. Nutr J 12:149. doi:10.1186/1475-2891-12-149 PMID:24237880 PMCID:PMC3907042
  • Punshon T, Ricachenevsky FK, Hindt MN, Socha AL, Zuber H. 2013. Methodological approaches for using synchrotron X-ray fluorescence (SXRF) imaging as a tool in ionomic characterization: Examples from whole plant imaging of Arabdiopsis thaliana. Metallomics 5:1133-1145. doi:10.1039/C3MT00120B PMID:23912758 PMCID:PMC3869573
  • Punshon T, Tappero R, Ricachenevsky FK, Hirschi KD, Nakata PA. 2013. Contrasting calcium localization and speciation in leaves of Medicago truncatula mutant COD5 analyzed via synchrotron X-ray techniques. Plant J 76:627-633. doi:10.1111/tpj.12322 PMID:24033783 PMCID:PMC3957323



  • Carey A, Norton GJ, Deacon C, Scheckel KG, Lombi E, Punshon T, Guerinot ML, Lanzirotti A, Newville M, Choi Y, Price AH, Meharg AA. 2011. Phloem transport of arsenic species from flag leaf to grain during grain filling. New Phytologist 192:87-98. doi:10.1111/j.1469-8137.2011.03789.x PMID:21658183 PMCID:PMC3932528 (Completed with ARRA Funds)
  • Gilbert-Diamond D, Cottingham KL, Gruber JF, Punshon T, Sayarath V, Gandolfi A, Baker E, Jackson BP, Folt CL, Karagas MR. 2011. Rice consumption contributes to arsenic exposure in US women. Proc Natl Acad Sci U S A 108(51):20656-20660. doi:10.1073/pnas.1109127108 PMID:22143778 PMCID:PMC3251121


  • Chu H, Chiecko J, Punshon T, Lanzirotti A, Lahner B, Salt DE, Walker E. 2010. Successful reproduction requires the function of Arabidopsis Yellow Stripe-Like1 and Yellow Stripe-Like3 metal-nicotianamine transporters in both vegetative and reproductive structures. Plant Physiol 154:197-210. doi:10.1104/pp.110.159103 PMID:20625001 PMCID:PMC2938154 (Completed with ARRA Funds)



  • Jackson BP, Seaman JC, Burger J, Punshon T, Adriano D. 2006. Arsenic and selenium speciation in aged flue gas desulfurization sludge amended soil. In: Coal Combustion Byproducts and Environmental Issues. Springer, New York, NY. pp.114-123.
  • Punshon T, Lanzirotti A, Li L, Alonso JM, Ecker JR, Kaplan J, Guerinot ML, Kim SA. 2006. Localization of iron in Arabidopsis seed requires the vacuolar membrane transporter VIT1. Science 314(5803):1295-1298. doi:10.1126/science.1132563 PMID:17082420
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