| Title |
Chlorophyll breakdown in higher plants and algae
|
|---|---|
| Published in |
Cellular and Molecular Life Sciences, September 1999
|
| DOI | 10.1007/s000180050434 |
| Pubmed ID | |
| Authors |
S. Hörtensteiner |
| Abstract |
Leaf senescence is accompanied by the metabolism of chlorophyll (Chl) to nonfluorescent catabolites (NCCs). The pathway of Chl degradation comprises several reactions and includes the occurrence of intermediary catabolites. After removal of phytol and the central Mg atom from Chl by chlorophyllase and Mg dechelatase, respectively, the porphyrin macrocycle of pheophorbide (Pheide) a is cleaved. This two-step reaction is catalyzed by Pheide a oxygenase and RCC reductase and yields a primary fluorescent catabolite (pFCC). After hydroxylation and additional species-specific modifications, FCCs are tautomerized nonenzymically to NCCs inside the vacuole. Different subcellular compartments participate in Chl catabolism and, thus, transport processes across membranes are required. This review focuses on the catabolites and the individual reactions of Chl breakdown in higher plants. In addition, the pathway is compared to Chl conversion to red catabolites in an alga, Chlorella protothecoides. Finally, the significance and regulation of Chl degradation are discussed. |
Mendeley readers
The data shown below were compiled from readership statistics for 118 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Germany | 2 | 2% |
| Portugal | 1 | <1% |
| France | 1 | <1% |
| United Kingdom | 1 | <1% |
| United States | 1 | <1% |
| Philippines | 1 | <1% |
| Unknown | 111 | 94% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 39 | 33% |
| Student > Ph. D. Student | 22 | 19% |
| Student > Master | 14 | 12% |
| Professor > Associate Professor | 7 | 6% |
| Other | 6 | 5% |
| Other | 14 | 12% |
| Unknown | 16 | 14% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 49 | 42% |
| Biochemistry, Genetics and Molecular Biology | 16 | 14% |
| Environmental Science | 10 | 8% |
| Chemistry | 5 | 4% |
| Earth and Planetary Sciences | 5 | 4% |
| Other | 9 | 8% |
| Unknown | 24 | 20% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 September 2012.
All research outputs
#8,535,472
of 25,374,917 outputs
Outputs from Cellular and Molecular Life Sciences
#2,146
of 5,877 outputs
Outputs of similar age
#11,515
of 35,132 outputs
Outputs of similar age from Cellular and Molecular Life Sciences
#12
of 28 outputs
Altmetric has tracked 25,374,917 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 5,877 research outputs from this source. They typically receive a little more attention than average, with a mean Attention Score of 5.8. This one is in the 30th percentile – i.e., 30% of its peers scored the same or lower than it.
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