Update on the biochemistry of chlorophyll breakdown

Update on the biochemistry of chlorophyll breakdown In land plants, chlorophyll is broken down to colorless linear tetrapyrroles in a highly conserved multi-step pathway. The pathway is termed the ‘PAO pathway’, because the opening of the chlorine macrocycle present in chlorophyll catalyzed by pheophorbide a oxygenase (PAO), the key enzyme of the pathway, provides the characteristic structural basis found in all further downstream chlorophyll breakdown products. To date, most of the biochemical steps of the PAO pathway have been elucidated and genes encoding many of the chlorophyll catabolic enzymes been identified. This review summarizes the current knowledge on the biochemistry of the PAO pathway and provides insight into recent progress made in the field that indicates that the pathway is more complex than thought in the past. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Update on the biochemistry of chlorophyll breakdown

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Publisher
Springer Netherlands
Copyright
Copyright © 2012 by Springer Science+Business Media B.V.
Subject
Life Sciences; Plant Sciences; Biochemistry, general; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-012-9940-z
Publisher site
See Article on Publisher Site

Abstract

In land plants, chlorophyll is broken down to colorless linear tetrapyrroles in a highly conserved multi-step pathway. The pathway is termed the ‘PAO pathway’, because the opening of the chlorine macrocycle present in chlorophyll catalyzed by pheophorbide a oxygenase (PAO), the key enzyme of the pathway, provides the characteristic structural basis found in all further downstream chlorophyll breakdown products. To date, most of the biochemical steps of the PAO pathway have been elucidated and genes encoding many of the chlorophyll catabolic enzymes been identified. This review summarizes the current knowledge on the biochemistry of the PAO pathway and provides insight into recent progress made in the field that indicates that the pathway is more complex than thought in the past.

Journal

Plant Molecular BiologySpringer Journals

Published: Jul 13, 2012

References

  • Impact of UV-B irradiation on chlorophyll degradation and chlorophyll-degrading enzyme activities in stored broccoli (Brassica oleracea L. Italica Group) florets
    Aiamla-or, S; Kaewsuksaeng, S; Shigyo, M; Yamauchi, N
  • Reactive oxygen species: metabolism, oxidative stress, and signal transduction
    Apel, K; Hirt, H
  • Mechanistic analysis of wheat chlorophyllase
    Arkus, KAJ; Cahoon, EB; Jez, JM
  • Transcription factors regulating leaf senescence in Arabidopsis thaliana
    Balazadeh, S; Riaño-Pachón, DM; Mueller-Roeber, B
  • Chlorophyll breakdown in tobacco: on the structure of two nonfluorescent chlorophyll catabolites
    Berghold, J; Eichmüller, C; Hörtensteiner, S; Kräutler, B
  • High-resolution temporal profiling of transcripts during Arabidopsis leaf senescence reveals a distinct chronology of processes and regulation
    Breeze, E; Harrison, E; McHattie, S; Hughes, L; Hickman, R; Hill, C; Kiddle, S; Kim, YS; Penfold, CA; Jenkins, D; Zhang, C; Morris, K; Jenner, C; Jackson, S; Thomas, B; Tabrett, A; Legaie, R; Moore, JD; Wild, DL; Ott, S; Rand, D; Beynon, J; Denby, K; Mead, A; Buchanan-Wollaston, V

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