Porphyrin biosynthesis as a tool in pest management : an overview / Stephen O. Duke and Constantin A. Rebeiz -- Synthetic organic chemicals that act through the porphyrin pathway / R.J. Anderson, A.E. Norris, and F.D. Hess -- Synthesis of protoporphyrinogen oxidase inhibitors / Robert D. Clark -- Delta-aminolevulinic acid based herbicides and tetrapyrrole biosynthesis modulators / Constantin A. Rebeiz, S. Amindari, Krishna N. Reddy, Ujjana B. Nandihalli, M.B. Moubarak, and J.A. Velu -- Delta-aminolevulinic acid induced photodynamic damage to cucumber (Cucumis sativus L.) Plants mediated by singlet oxygen / Baishnab Charan Tripathy -- Characterization of plant and yeast protoporphyrinogen oxidase : molecular target of diphenyl ether type herbicides / Jean-Michel Camadro, Michel Matringe, Nicole Brouillet, Franðcoise Thomé Duke, and Pierre Labbe -- Characterization of a mutant of Chlamydomonas reinhardtii resistant to protoporphyrinogen oxidase inhibitors / Ryo Sato, Masako Yamamoto, Hideyuki Shibata, Hiromichi Oshio, Elizabeth H. Harris, Nicholas W. Gillham, and John E. Boynton -- Factors affecting protoporphyrin accumulation in plants treated with diphenyl ether herbicides / Judith M. Jacobs and Nicholas J. Jacobs -- Variation in crop response to protoporphyrinogen oxidase inhibitors / H. Matsumoto, J.J. Lee, and K. Ishizuka -- Structure-activity relationships of protoporphyrinogen oxidase inhibiting herbicides / Ujjana B. Nandihalli and Stephen O. Duke -- Porphyrin synthesis in liverwort cells induced by peroxidizing herbicides / Shuji Iwata, Motoo Sumida, Naoko Nakayama, Takaharu Tanaka, Ko Wakabayashi, and Peter Bèoger -- Modulators of the porphyrin pathway beyond protoporphyrinogen oxidase / Krishna N. Reddy and Constantin A. Rebeiz -- Mechanisms of plant tolerance to photodynamic herbicides / T. Komives and G. Gullner -- Protoporphyrinogen oxidase as the optimal herbicide site in the porphyrin pathway / Stephen O. Duke, Ujjana B. Nandihalli, Hee Jae Lee, and Mary V. Duke -- Porphyric insecticides / Larry J. Gut, John A. Juvik, and Constantin A. Rebeiz -- Porphyrins as chemotherapeutic agents : biochemistry of protoporphyrin IX accumulation in mammalian cells / Natalie Rebeiz, Keith W. Kelley, and Constantin A. Rebeiz -- Effect of protoporphyrinogen oxidase inhibitors on mammalian porphyrin metabolism / J. Krijt, M. Vokurka, J. Sanitrák, and V. Janousek -- Photodynamic therapy with porphyrin derivatives / Leonard I. Grossweiner -- Effects of diphenyl ether herbicides on the heme pathway in cultured liver cells / P.R. Sinclair, N. Gorman, H.S. Walton, J.F. Sinclair, Judith M. Jacobs, and Nicholas J. Jacobs -- Protoporphyrinogen oxidase inhibitors for tumor therapy / B.P. Halling, D.A. Yuhas, V.F. Fingar, and J.W. Winkelmann -- Using delta-aminolevulinic acid in cancer therapy / James C. Kennedy and Roy H. Pottier.