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The biochemistry and molecular biology of chlorophyll breakdown.

  • Kuai B State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China.
  • Chen J State Key Laboratory of Genetic Engineering, School of Life Sciences, Fudan University, Shanghai, China.
  • Hörtensteiner S Institute of Plant and Microbial Biology, University of Zurich, Zollikerstrasse, Zurich, Switzerland.
  • 2017-10-10
Published in:
  • Journal of experimental botany. - 2018
Chlorophyll breakdown
chlorophyll catabolic gene
fruit ripening
leaf senescence
phyllobilin
transcriptional regulation
Chlorophyll
Oxygenases
Plant Leaves
Plant Proteins
Signal Transduction
Tetrapyrroles
English Chlorophyll breakdown is one of the most obvious signs of leaf senescence and fruit ripening. The resulting yellowing of leaves can be observed every autumn, and the color change of fruits indicates their ripening state. During these processes, chlorophyll is broken down in a multistep pathway, now termed the 'PAO/phyllobilin' pathway, acknowledging the core enzymatic breakdown step catalysed by pheophorbide a oxygenase, which determines the basic linear tetrapyrrole structure of the products of breakdown that are now called 'phyllobilins'. This review provides an update on the PAO/phyllobilin pathway, and focuses on recent biochemical and molecular progress in understanding phyllobilin-modifying reactions as the basis for phyllobilin diversity, on the evolutionary diversity of the pathway, and on the transcriptional regulation of the pathway genes.
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  • English
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hybrid
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https://sonar.ch/global/documents/47978
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