Selected Publications

Kumar, R. K., Chu, H-H., Abundis, C. A., Vasques, K., Chan-Rodriguez, D., Chia, J-C, Huang, R., Vatamaniuk, O. K., and E. L. Walker (Submitted) Iron-Nicotianamine Transporters Are Required for Proper Long Distance Iron Signaling . Online Early DOI: https://doi.org/10.1104/pp.17.00821. Kumar et al., 2017

Lenka, S.K., Nims, N. E., Vongpaseuth, K., Boshar, R. A., Roberts, S. C. and E. L. Walker (2015) Jasmonate-responsive expression of paclitaxel biosynthesis genes in Taxus cuspidata cultured cells is negatively regulated by the bHLH transcription factors TcJAMYC1, TcJAMYC2 and TcJAMYC4. Frontiers in Plant Science 6:115. Lenka et al., 2014

Patil, R.A., Lenka, S.K., Normanly, J., Walker, E.L., and S.C. Roberts (2014) Methyl jasmonate represses growth and affects cell cycle progression in cultured Taxus cells. Plant Cell Reports
33: 1479-1492. Patil et al., 2014

Conte S. S., Chu H. H., Rodriguez D. C., Punshon T., Vasques K. A., Salt D. E., and E. L. Walker(2013) Arabidopsis thaliana Yellow Stripe1-Like4 and Yellow Stripe1-Like6 localize to internal cellular membranes and are involved in metal ion homeostasis. Frontiers in Plant Science 4:283. Conte et al., 2013

Lenka, S. K., Boutaoui, N., Paulose, B., Vongpaseuth, K., Normanly, J., Roberts, S. C. and E. L. Walker (2012) Identification and expression analysis of methyl jasmonate responsive ESTs in paclitaxel producing Taxus cuspidata suspension culture cells. BMC Genomics 13:148. Lenka et al., 2012

Patil, R. A., Kolewe, M. E., Normanly, J., E. L. Walker , Susan
C. Roberts, S.C. (2012) Contribution of taxane biosynthetic pathway gene expression to observed variability in paclitaxel accumulation in Taxus suspension cultures. Biotechnology Journal 7: 418–427.
Patil et al., 2012

Yordem, B. K., Conte, S. S., Ma, J. F., Yokosho, K., Vasques, K. A., E. L. Walker (2011) Brachypodium distachyon as a new model system for understanding iron homeostasis in grasses: phylogenetic and expression analysis of Yellow Stripe Like (YSL) transporters. Annals of Botany 108(5):821-33.Yordem et al., 2011

Walker, E. L., Waters B. M. (2011) The role of transition metal homeostasis in plant seed development. Current Opinion in Plant Biology 14(3):318-24.Walker and Waters, 2011

Conte, S. S. and E. L. Walker. href="http://www.bio.umass.edu/biology/ewalker/sites/www.bio.umass.edu.biology.ewalker/files/Conte_online_early.pdf">Conte and Walker, 2011

Chu, H. H., Chiecko, J., Punshon, T., Lanzirotti, A., Lahner, B., Salt, D. E., and E. L. Walker. 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 Physiology, 154:197-210. Chu et al., 2010

Lee, S., Chiecko, J. C., Walker, E. L., Lee, Y., Guerinot, M. L. and G. An. 2009. Disruption of OsYSL15 leads to iron inefficiency in rice plants. Plant Physiology, 150(2): 786-80. Lee et al., 2009

Tharayil. N., Bhowmik, P.C., Alpert, P, Walker, E.L. , Amarasiriwardena, D., and B. Xing. 2008. Dual purpose secondary compounds: Phytotoxin of Centaurea diffusa also facilitates nutrient uptake. New Phytologist, 181: 424-434. Tharayil et al., 2009

Walker, E. L. and E. L. Connolly. 2008. Time to pump iron: Iron-deficiency signaling mechanisms of higher plants. Current Opinion in Plant Biology, 11(5): 530-535. Walker and Connolly, 2008

Vongpaseuth, K., Nims, E., Amand, M., Walker, E. L., and S. C. Roberts 2007. Development of a particle bombardment-mediated transient transformation system for Taxus spp. cells in culture. Biotechnology Progress, 23(5): 1180 -1185. Vongpaseuth et al., 2007

Waters, B.M., H.H. Chu, R.J. Didonato, L.A. Roberts, R.B. Eisley, B. Lahner, D.E. Salt, and Walker, E.L. 2006. Mutations in Arabidopsis yellow stripe-like1 and yellow stripe-like3 reveal their roles in metal ion homeostasis and loading of metal ions in seeds. Plant Physiology, 141: 1446-58. Waters et al., 2006

Nims, E., C.P. Dubois, S.C. Roberts, and Walker, E.L. 2006. Expression profiling of genes involved in paclitaxel biosynthesis for targeted metabolic engineering. Metabolic Engineering, 8: 385-94. Nims et al., 2006

DiDonato, R. J., Roberts, L. A., Sanderson, T., Eisley, R. B. and Walker, E. L. 2004. Arabidopsis Yellow Stripe-Like2 (YSL2): a metal-regulated gene encoding a plasma membrane transporter of nicotianamine-metal complexes. The Plant Journal, 39: 404-413. DiDonato et al., 2004

Roberts, L. A., Pierson, A. J., Panaviene, Z., and Walker, E. L. 2004. Yellow Stripe1. Expanded Roles for the Maize Iron-Phytosiderophore Transporter," Plant Physiology, 135: 112-120. Roberts et al., 2004

Curie, C., Panaviene, Z., Loulergue, C., Dellaporta,, S. L., Briat, J-F., and Walker, E. L. 2001. Maize yellow stripe 1 encodes a membrane protein directly involved in Fe(III) uptake. Nature 409: 346-349. Curie et al., 2001