ArticlePlant physiology1995
Identification of NADPH:protochlorophyllide oxidoreductases A and B: a branched pathway for light-dependent chlorophyll biosynthesis in Arabidopsis thaliana.
Article in Plant physiology, 1995. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 107 papers.
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Who cites it
107 citing papers in PubMed, 281 citations in OpenAlex.
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- Effects of light on chloroplast translation in Marchantia polymorpha are similar to those in angiosperms and are not influenced by light-independent chlorophyll synthesis.The Plant journal : for cell and molecular biology · 2025Article
- De-etiolation is Almost Color Blind: The Study of Photosynthesis Awakening under Blue and Red Light.Plant & cell physiology · 2024Article
- Effect of Light Quality on the seed Germination and Development of Coffee Seedlings (Plants (Basel, Switzerland) · 2024Article
- Orchestration of Photosynthesis-Associated Gene Expression and Galactolipid Biosynthesis during Chloroplast Differentiation in Plants.Plant & cell physiology · 2024Article
- Light dependent protochlorophyllide oxidoreductase: a succinct look.Physiology and molecular biology of plants : an international journal of functional plant biology · 2024Review
- A novel tetratricopeptide-repeat protein, TTP1, forms complexes with glutamyl-tRNA reductase and protochlorophyllide oxidoreductase during tetrapyrrole biosynthesis.Journal of experimental botany · 2024Article
- Light controls mesophyll-specific post-transcriptional splicing of photoregulatory genes by AtPRMT5.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Expression ofPlants (Basel, Switzerland) · 2023Article
- Global Analysis of Dark- and Heat-Regulated Alternative Splicing in Arabidopsis.International journal of molecular sciences · 2023Article
- Auxin inhibits chlorophyll accumulation through ARF7-IAA14-mediated repression of chlorophyll biosynthesis genes inFrontiers in plant science · 2023Article
- iReenCAM: automated imaging system for kinetic analysis of photosynthetic pigment biosynthesis at high spatiotemporal resolution during early deetiolation.Frontiers in plant science · 2023Article
- MSALigMap-A Tool for Mapping Active-Site Amino Acids in PDB Structures onto Known and Novel Unannotated Homologous Sequences with Similar Function.Life (Basel, Switzerland) · 2022Article
- Phytochrome A in plants comprises two structurally and functionally distinct populations - water-soluble phyA' and amphiphilic phyA″.Biophysical reviews · 2022Review
- De-etiolation-induced protein 1 (DEIP1) mediates assembly of the cytochrome bNature communications · 2022Article
- Transcriptome and metabolome analyses reveal new insights into chlorophyll, photosynthesis, metal ion and phenylpropanoids related pathways during sugarcane ratoon chlorosis.BMC plant biology · 2022Article
- Fine Mapping and Characterization of a Major Gene Responsible for Chlorophyll Biosynthesis inBiomolecules · 2022Article
- Functional analysis of CqPORB in the regulation of chlorophyll biosynthesis inFrontiers in plant science · 2022Article
- Transcriptome Analysis of Green and White Leaf Ornamental Kale Reveals Coloration-Related Genes and Pathways.Frontiers in plant science · 2022Article
47 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Illumination releases the arrest in chlorophyll (Chl) biosynthesis in etiolated angiosperm seedlings through the enzymatic photoreduction of protochlorophyllide (Pchlide) to chlorophyllide (Chlide), the first light-dependent step in chloroplast biogenesis. NADPH: Pchlide oxidoreductase (POR, EC 1.3.1.33), a nuclear-encoded plastid-localized enzyme, mediates this unique photoreduction. Paradoxically, light also triggers a drastic decrease in the amounts of POR activity and protein before the Chl accumulation rate reaches its maximum during greening. While investigating this seeming contradiction, we identified two distinct Arabidopsis thaliana genes encoding POR, in contrast to previous reports of only one gene in angiosperms. The genes, designated PorA and PorB, by analogy to the principal members of the phytochrome photoreceptor gene family, display dramatically different patterns of light and developmental regulation. PorA mRNA disappears within the first 4 h of greening, whereas PorB mRNA persists even after 16 h of illumination, mirroring the behavior of two distinct POR protein species. Experiments designed to help define the functions of POR A and POR B demonstrate exclusive expression of PorA in young seedlings and of PorB both in seedlings and in adult plants. Accordingly, we propose the existence of a branched light-dependent Chl biosynthesis pathway in which POR A performs a specialized function restricted to the initial stages of greening and POR B maintains Chl levels throughout angiosperm development.
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