Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2007.117.121ES, of the Maize Pathogen Erwinia stewartii is Species-Specific but is Independent of the Growth Temperature]]>AhmadMusharaf Sartaj AlamSyed AlamShah UsmanAmjad L. CoplinDavid 12007101The extra-cellular export of the HR-eliciting protein, HarpinEs of the maize pathogen Erwinia stewartii was studied to find out if the protein needs any species-specific signal for its export and to determine if the export of the protein to the medium is affected in any way by the growth temperature. Based upon the experimental evidence, it was proved that the protein (i.e., HarpinEs) does require its own export system (species-specific) to get out of the bacterial cell and can not be exported by the export system of even the very closely related bacterium, Erwinia amylovora. It was also found that the export of HarpinEs is, unlike the case of HarpinEa (HR-eliciting protein of Erwinia amylovora), independent of the growth temperature.]]>Agrios, G.N.,2005Hrp Genes and the Type III Secretion System: Another Class of Pathogenicity Genes in Bacteria.]]>2005pp: 155-160pp: 155-160Ahmad, M., D.R. Majerczak, S. Pike, M.E. Hoyos, A. Novacky and D.L. Coplin,2001Pantoea stewartii subsp. stewartii.]]>1412231234Ahmad, M., D.R. Majerczak and D.L. Coplin, 2005hrpN gene of Erwinia (Pantoea) stewartii, a bacterium that causes vascular wilt and leaf blight of corn.]]>813611367Ahmad, M., R.M. Doris and L.C. David,2005813681375Bauer, D.W., Z.M. Wei, S.V. Beer and A. Collmer,1995Erwinia chrysanthemi harpinEch: An elicitor of the hypersensitive response that contributes to soft rot pathogenesis.]]>8484491Beer, S.V., R.J. Laby, B.J. Sneath and D.L. Coplin,1990hrp mutants of Erwinia amylovora with DNA of Erwinia stewartii.]]>80985985Coplin, D.L.,1978Erwinia stewartii.]]>6816371643Coplin, D.L., R.G. Rowan, D.A. Chisholm and R.E. Whitmoyer,1981Erwinia stewartii.]]>42599604Coplin, D.L., R.D. Frederick and E.S. Haas,1986Erwinia stewartii.]]>168619623Dolph, P.J., D.R. Majerczak and D.L. Coplin,1988Erwinia stewartii.]]>170865871Frederick, R.D., M. Ahmad, D.R. Majerczak, A.S. Arroyo-Rodriguez, S. Manulis and D.L. Coplin,2001Pantoea stewartii subsp. stewartii hrp gene cluster and sequence analysis of the hrpA, hrpC, hrpN and wtsE operons.]]>1412131222Greenberg, J.T. and B.A. Vinatzer,200362028He, S.Y., M. Lindeberg, A.K. Chatterjee and A. Collmer,1991Erwinia chrysanthemi out genes enable E. coli to selectively secrete a diverse family of heterologous proteins to its milieu.]]>8810791083Li, C.M., I. Brown, J. Mansfield, C. Stevens, T. Boureau, M. Romantschuk and S. Taira,2002Hrp pilus of Pseudomonas syringae elongates from its tip and acts as a conduit for translocation of the effector protein HrpZ.]]>2119091915McCammon, S., D.L. Coplin and R. Rowan,1985Erwinia stewartii using bacteriophage Mu pf7701.]]>13129933000Pye, B., G.P.C. Salmond, M. Chippsux and F. Barras,1991Erwinia chrysanthemi and Erwinia carotovora is species-specific.]]>79315322Rantakari, A., O. Virtaharjo, S. Vahamiko, S. Taira, E.T. Palva, H.T. Saarilahti and M. Romantschuk,2001Erwinia carotovora: Partial characterization of the hrp gene cluster.]]>14962968Sambrook, J., E.F. Fritsch and T.A. Maniatis,19892nd Edn.,Pages: 397Pages: 397Szurek, B., O. Rossier, G. Hause and U. Bonas,2002Xanthomonas AvrBs3 protein into the plant cell.]]>461323Wei, Z.M., R.J. Laby, C.H. Zumoff, D.W. Bauer, S.Y. He, A. Collmer and S.V. Beer,1992Erwinia amylovora.]]>2578588Wei, Z.M. and S.V. Beer,1993Erwinia amylovora functions in secretion of harpin and is a member of a new protein family.]]>17579587967