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  • He SY, Lindeberg M, Chatterjee AK, Collmer A (1991) Cloned out genes from Erwinia chrysanthemi EC16 enable Escherichia coli strains to selectively secrete a diverse family of heterologous proteins to its milieu. Proc Natl Acad Sci USA 88: 1079-1083 Abstract


  • Meeley RM, Johal GS, Briggs SP, Walton JD (1992) A biochemical phenotype for a disease resistance gene of maize. Plant Cell 4: 71-77 Abstract

  • Wei Z-M, Laby JR, Zumoff CH, Bauer DW, He SY, Collmer A, Beer SV (1992) Harpin, elicitor of the hypersensitive response produced by the plant pathogen Erwinia amylovora. Science 257: 85-88 Abstract


  • Canini A, Brandizzi F, Grilli Caiola M (1993) Localisation of calcium in Cycas revoluta-cyanobiont by microelectrodes, ESI and EELS analyses. Microscopia Electronica  14: 243-244Canini A, Brandizzi F, Grilli Caiola M (1993) Localisation of calcium in Cycas revoluta-cyanobiont by microelectrodes, ESI and EELS analyses. Microscopia Electronica  14: 243-244

  • He SY, Huang HC, Collmer A (1993) Pseudomonas syringae pv. syringae harpinPss: a protein that is secreted via the Hrp pathway and elicits the hypersensitive response in plants. Cell 73: 1255-1266 Abstract


  • Bruce BD, Perry S, Froehlich JE, Keegstra K (1994) In vitro Import of Proteins into Chloroplasts; (book chapter/review) In Plant Mol. Biol. Manual, Eds.S. B. Gelvin and R. A. Schilperoot; pp. J1, 1-15, Kluwer Academic Publishers (London).

  • Canini A, Brandizzi F, Caiola MG (1994) Localization of calcium in the cyanobiont and gonidial zone of Cycas revoluta Thunb. by microelectrodes, chlorotetracycline, electron spectroscopic imaging and electron-energy-loss spectroscopy. Protoplasma 179: 151-157

  • Walton JD (1994) Deconstructing the cell wall. Plant Physiol 104: 1113-1118 Article


  • Brosch G, Ransom R, Lechner T, Walton JD, Loidl P (1995) Inhibition of maize histone deacetylases by HC toxin, the host-selective toxin of Cochliobolus carbonum.  Plant Cell 7: 1941-1950 Abstract

  • Tranel P, Froehlich JE, Goyal A, Keegstra K (1995) A component of the chloroplastic protein import apparatus is targeted to the outer envelope membrane via a novel pathway EMBO J 14: 2436-2446 Abstract


  • Brandizzi F, Caiola MG (1996) Calcium variation in pistil of Crocus cartwrightianus herb and Crocus sativus L. J Trace Microprobe T 14: 415-426

  • Brandizzi F, Grilli Caiola M (1996) Quantitative DNA analysis in different Crocus (Iridaceae) species by means of flow cytometry. Giornale Botanico Italiano 130: 643-645

  • Gopalan S, Bauer D, Alfano J, Loniello A, He SY, Collmer A (1996) Expression of the Pseudomonas syringae avirulence protein AvrB in plant cells alleviates its dependence on the hypersensitive response and pathogenicity (Hrp) secretion system in eliciting genotype-specific hypersensitive cell death. Plant Cell 8: 1095-1105(Suresh Gopalan is from SYH’s lab) Abstract

  • Howe G, Lightner J, Browse J, Ryan C (1996) An octadecanoid pathway mutant (JL5) of tomato is compromised in signaling for defense against insect attack. Plant Cell 8: 2067-2077 Abstract 

  • Hu J, Anderson B, Wessler SR (1996) Isolation and characterization of rice R genes: evidence for distinct evolutionary paths in rice and maize. Genetics 142:  1021-1031   Full Text


  • Akita M, Nielsen E, Keegstra K (1997) Identification of protein transport complexes in the chloroplastic envelope membrane via chemical cross-linking. J Cell Biol 136: 983-994 Abstract

  • Brandizzi F, Grilli Caiola M (1997) Calcium in the reproductive biology of Crocus biflorus Mill. subsp. biflorus (Iridaceae). Plant Biosystems 131: 69-74

  • Elhai J, Vepritskiy A, Muro-Pastor AM, Flores E, Wolk CP (1997) Reduction of conjugal transfer efficiency by three restriction activities of Anabaena sp strain PCC 7120.  J Bacteriol 179: 1998-2005 (Conjugation is greatly enhanced by pre-methylation to prevent restriction) PDF

  • Froehlich JE ,Keegstra K (1997) Identification of a Translocation Intermediate Occupying Functional Protein Import Sites in the Chloroplastic Envelope Membrane.  J Biol Chem 272:8077-8082.

  • Grilli Caiola M, Brandizzi F (1997) Pollen-pistil interactions in Hermodactylus tuberosus Mill. (Iridaceae). Plant Biosystems (1997) 131: 197-205            

  • Nielsen E, Akita M, Davila-Aponte J, Keegstra K (1997) Stable association of chloroplastic precursors with protein translocation complexes that contain proteins from both envelope membranes and a stromal Hsp100 molecular chaperone.  EMBO J 16: 935-946 Abstract

  • Roine E, Wei W, Yuan J, Nurmiaho-Lassila E, Kalkkinen N, Romantschuk M, He SY (1997) Hrp pilus: An  hrp-dependent bacterial surface appendage produced by Pseudomonas syringae pv. tomato DC3000.  Proc Natl Acad Sci USA 94: 3459-3464 Paper


  • Brandizzi F, Caiola MG (1998) Flow cytometric analysis of nuclear DNA in Crocus sativus and allies (Iridaceae). Plant Syst Evol 211: 149-154            

  • Jackson D, Froehlich JE, Keegstra K (1998) The hydrophilic domain of Tic110, an inner envelope       membrane component of the chloroplastic protein translocation apparatus, faces the stromal compartment. J Biol Chem 273: 16583-16588 Abstract

  • Jackson D, Froehlich JE, Keegstra K (1998) The topology of Tic 110, a component of the chloroplastic protein import apparatus. J Biol Chem 273: 16583-16588 Abstract

  • Keegstra K, Akita M, Davila-Aponte J, Froehlich JE, Neilsen E, Reumann S (1998) Transport of Cytoplasmically Synthesized Proteins into Chloroplasts;  In Cellular Integration of Signaling Pathways in Plant Development, (book chapter/review) Eds. F. Lo.Schiavo, R.L. Last, G. Morelli, N.V. Raikhel, Vol H 104, pp. 23-33, NATO ASI Series, Springer-Verlag (Berlin).

  • Weaver M, Froehlich JE , Amassino R (1998) The Chloroplastic-targeted ERD1 Protein Declines During Senescence, While Its mRNA Increases. Plant Physiology 119:1209-1216.


  • Hawes CR, Brandizzi F, Andreeva AV (1999) Endomembranes and vesicle trafficking. Curr Opin Plant Biol 2: 454-461

  • Keegstra K,  Froehlich JE (1999) Protein Import into Chloroplasts: Curr. Opinion  (book chapter/review) in Plant Biol. 2:471-476.

  • Keegstra K, Cline K (1999) Protein import and routing systems of chloroplasts. Plant Cell 11: 557-570 Abstract

  • Turner G, Gershenzon J, Nielsen E, Froehlich JE, Croteau R (1999) Limonene Synthase Responsible for Monoterpene Biosynthesis in Peppermint is Localized to Leucoplasts of Oil Gland Secretory Cells. Plant Physiology 120:879-886.

  • Young K, Keegstra K, Froehlich JE* (1999) GTP Promotes Precursor Binding but is Not Required During the Translocation Step of Protein Import into Chloroplasts. Plant Physiology 121:237-243. (*corresponding author)


  • Caiola MG, Brandizzi F, Canini A (2000) Hermodactylus tuberosus L. (Iridaceae) pollen organisation before and after anther dehiscence. Plant Biosyst 134: 353-364

  • Cheng Y-Q, Walton JD (2000) A eukaryotic alanine racemase involved in cyclic peptide biosynthesis.      J Biol Chem 275: 4906-5004 Abstract

  • Colletti KS, Tattersall EA, Pyke KA, Froehlich JE, Stokes KD, Osteryoung KW (2000) Placement of the Chloroplast Division Apparatus is Mediated by a Homologue of the Bacterial Cell Division Site-determining Factor MinD. Current Biology 10: 507-516.

  • DeRocher A, Hagen C, Froehlich JE, Feagin JE, Parsons M  (2000) Analysis of Targeting Sequences Demonstrates that Trafficking to the Toxoplasma gondii Plastid Branches off the Secretory Pathway. Journal of Cell Science 113:3969-3977.

  • Gilmour SJ,  Sebolt AM,  Salazar MP, Everard JD, Thomashow MF (2000) Overexpression of the Arabidopsis CBF3 transcriptional activator mimics multiple biochemical changes associated with cold acclimation. Plant Physiol 124: 1854-1865.

  • Howe GA, Lee GI, Itoh A, Li L, DeRocher A (2000) Cytochrome P450-dependent metabolism of oxylipins in tomato: Cloning and expression of allene oxide synthase and fatty acid hydroperoxide lyase. Plant Physiol 123: 711-724 Abstract

  • Hu J, Reddy VS, Wessler SR (2000) The rice R gene family: two distinct subfamilies containing several miniature inverted-repeat transposable elements. Plant Mol Biol 42:  667-678 Full Text

  • O’Connell KP,  Gustafson AM,  Lehmann MD, Thomashow MF (2000) Identification of cold shock gene loci in Sinorhizobium meliloti by using a luxAB reporter transposon. Appl Environ Microbiol 66:401-405.

  • O’Connell KP, Thomashow MF (2000) Transcriptional organization and regulation of a polycistronic cold shock operon in Sinorhizobium meliloti RM1021 encoding homologs of the Escherichia coli major cold shock gene cspA and ribosomal protein gene rpsU. Appl Environ Microbiol 66:392-400.

  • Tonukari NJ, Scott-Craig JS, Walton JD (2000) The Cochliobolus carbonum SNF1 gene is required for cell wall-degrading enzyme expression and virulence on maize. Plant Cell 12: 237-248 Abstract

  • Walton JD (2000) Horizontal gene transfer and the evolution of secondary metabolite gene clusters in fungi: an hypothesis. Fung Genet Biol 30: 167-171

  • Wei W, Plovanich-Jones A, Deng W-L, Jin, Q-L, Collmer A, Huang, H-C, He, SY (2000) The gene coding for the structural protein of the Hrp pilus is required for type III secretion of Hrp and Avr proteins in Pseudomonas syringae pv. tomato. Proc Natl Acad Sci USA 97:2247-2252 Abstract