Su, Q., Frick, G., Armstrong, G. and Apel, K. (2001) “POR C of Arabidopsis thaliana: a third light- and NADPH-dependent protochlorophyllide oxidoreductase that is differentially regulated by light.” Plant Mol. Biol. 47, 805-813.

Nibbe, M., Hilpert, B., Wasternack, C., Miersch, O. and Apel, K. (2002). “Cell death and salicylate- and jasmonate-dependent stress responses in Arabidopsis are controlled by single cet genes.” Planta 216, 120-128.

Meskauskiene, R. and Apel, K. (2002). “Interaction of FLU, a negative regulator of tetrapyrrole biosynthesis, with the glutamyl-tRNA reductase requires the tetratricopeptide repeat domain of FLU.”FEBS Lett. 532, 27-30.

Staiger, D., Zecca, L., Wieczorek Kirk, D.A., Apel, K. and Eckstein, L. (2003). “The circadian clock regulated RNA-binding protein AtGRP7 autoregulates its expression by influencing alternative splicing of its own pre-mRNA.” Plant J. 33, 361-371.

Richly, E., Dietzmann, A., Biehl, A., Kurth, J., Laloi, C., Apel, K., Salamini, F. and Leister, D. (2003). “Covariations in the nuclear chloroplast transcriptome reveal a regulatory master-switch.” EMBO Rep. 4, 491-498.

Frick, G., Su, Q., Apel, K. and Armstrong, G.A. (2003). “An Arabidopsis porB porC double mutant lacking light-dependent NADPH-protochlorophyllide oxidoreductases B and C is highly chlorophyll-deficient and developmentally arrested.” Plant J. 35, 141-153.

op den Camp, R.G., Przybyla, D., Ochsenbein, C., Laloi, C., Kim, C., Danon, A., Wagner, D., Hideg, E., Göbel, C., Feussner, I., Nater, M. and Apel, K. (2003). “Rapid induction of distinct stress responses after the release of singlet oxygen in Arabidopsis.” Plant Cell 15,2320-2332.

Lee, KP, Kim, C., Lee, DW. and Apel, K. (2003). “TIGRINA d, required for regulating the biosynthesis of tetrapyrroles in barley, is an ortholog of the FLU gene of Arabidopsis thaliana.” FEBS Lett. 553, 119-124.

Kim, C. and Apel, K. (2004). “Substrate-dependent and organ-specific chloroplast protein import in planta.” Plant Cell, 16, 88-98.

Apel, K. and Hirt, H. (2004) REACTIVE OXYGEN SPECIES: Metabolism, Oxidative Stress, and Signal Transduction. Annu. Rev. Plant Physiol. Plant Mol. Biol. 55, 373-399.

Laloi, C., Apel, K. and Danon, A. (2004) Reactive oxygen signalling: the latest news. Curr. Opin. Plant Biol. 7, 323-8.

Huq, E., Al-Sady, B., Hudson, M., Kim, C., Apel, K. and Quail, P.H. (2004) PHYTOCHROME-INTERACTING FACTOR 1 is a critical bHLH regulator of chlorophyll biosynthesis. Science 305, 1937-41.

Wagner, D., Przybyla, D., op den Camp, R., Kim, C., Landgraf, F., Lee, K.P., Würsch, M., Laloi, C., Nater, M., Hideg, E. and Apel, K. (2004) The Genetic Basis of Singlet Oxygen-Induced Stress Responses of Arabidopsis thaliana. Science 306, 1183-5.

Goslings, D., Meskauskiene, R., Kim, C., Lee, K.P., Nater, M. and Apel, K. (2004) Concurrent interactions of heme and FLU with Glu tRNA reductase (HEMA1), the target of metabolic feedback inhibition of tetrapyrrole biosynthesis, in dark- and light-grown Arabidopsis plants. Plant J. 40, 957-67.

Smykal, P., Gleissner, R., Corbesier, L., Apel, K. and Melzer, S. (2004) Modulation of flowering responses in different Nicotiana varieties. Plant Mol. Biol. 55, 253-62.

Danon, A., Miersch, O., Felix, G., op den Camp, R., and Apel, K. (2005) Concurrent activation of cell death-regulating signaling pathways by singlet oxygen in Arabidopsis thaliana. Plant J. 41, 68-80.

Falciatore, A., Merendino, L., Barneche, F., Ceol, M., Meskauskiene, R., Apel, K., and Rochaix, J.-D. (2005) The FLP proteins act as regulators of chlorophyll synthesis in response to light and plastid signals in Chlamydomonas. Genes Dev. 19, 176-187.

Kim, C., Ham, H., and Apel, K. (2005) Multiplicity of different cell- and organ-specific import routes for the NADPH-Protochlorophyllide oxidoreductases A and B in plastids of Arabidopsis seedlings. Plant J. 42, 329-40.

Albrecht, V., Ingenfeld, A., and Apel, K. (2006): Characterization of the snowy cotyledon 1 mutant of Arabidopsis thaliana: the impact of chloroplast elongation factor G on chloroplast development and plant vitality. PMB 60, 507-518.

Ochsenbein, C., Przybyla, D., Danon, A., Landgraf, F., Göbel, C., Imboden, A., Feussner, I., and Apel, K. (2006): The role of EDS1 (enhanced disease susceptibility) during singlet oxygen-mediated stress responses of Arabidopsis. Plant J. 47, 445–456.

Laloi, C., Przybyla, D., and Apel, K. (2006) A genetic approach towards elucidating the biological activity of different reactive oxygen species in Arabidopsis thaliana. J Exp Bot. 57(8):1719-24. Review.

Gadjev, I., Vanderauwera, S., Gechev, T.S., Laloi, C., Minkov, I.N., Shulaev, V., Apel, K., Inze, D., Mittler, R., and Van Breusegem, F. (2006) Transcriptomic footprints disclose specificity of reactive oxygen species signaling in Arabidopsis. Plant Physiol. Jun;141(2):436-45.

Danon, A., Sanchez Coll, N., and Apel, K. (2006) Cryptochrome-1-dependent execution of programmed cell death induced by singlet oxygen in Arabidopsis thaliana. Proc Natl Acad Sci U S A. Nov 7;103(45):17036-41.

Correction for Danon et al., Cryptochrome-1-dependent execution of programmed cell doi:10.1073/pnas.0609704103 PNAS 2006;103;18875-; originally published online Nov 21, 2006;

Gechev, T.S., Van Breusegem, F., Stone, J.M., Denev, I., and Laloi, C. (2006) Reactive oxygen species as signals that modulate plant stress responses and programmed cell death. BioEssays 28:1091–1101. Review.

Titiz, O., Tambasco-Studart, M., Warzych, E., Apel, K., Amrhein, N., Laloi, C., and Fitzpatrick, T.B. (2006) PDX1 is essential for vitamin B6 biosynthesis, development and stress tolerance in Arabidopsis. Plant J. Dec;48(6):933-46.

Laloi, C., Stachowiak, M., Pers-Kamczyc, E., Warzych, E., Murgia, I., and Apel, K. (2007) Cross-talk between singlet oxygen- and hydrogen peroxide-dependent signaling of stress responses in Arabidopsis thaliana. Proc Natl Acad Sci U S A. Jan 9;104(2):672-7. Epub 2006 Dec 29.

Lee, K.P., Kim, C., Landgraf, F., Apel, K. (2007) EXECUTER1- and EXECUTER2-dependent transfer of stress-related signals from the plastid to the nucleus of Arabidopsis thaliana. PNAS. May 31; [Epub ahead of print]

Miura, E., Kato, Y., Matsushima, R., Albrecht, V., Laalami, S., and Sakamoto, W. (2007) The balance between protein synthesis and degradation in chloroplasts determines leaf variegation in Arabidopsis yellow variegated mutants. The Plant Cell 19, 1313-1328.

Gutensohn, M., Pahnke, S., Kolukisaoglu, Ü., Schulz, B., Schierhorn, A., Voigt, A., Hust, B., Rollwitz, I., Stöckel, J., Geimer, S., Albrecht, V., Flügge, U. I., and Klösgen, R. B. (2004) Characterization of a T-DNA insertion mutant for the protein import receptor AtToc33 from chloroplasts. MGG 272, 379-396.

Mahler, H., Wuennenberg, P., Linder, M., Przybyla, D., Zoerb, C., Landgraf, F., and Forreiter, C. (2007) Singlet oxygen affects the activity of the thylakoid ATP synthase and has a strong impact on its gamma subunit. Planta. Apr;225(5):1073-83. Epub 2006 Nov 14