ArticlePlanta2009
Subcellular localization and enzymatic properties of differentially expressed transketolase genes isolated from the desiccation tolerant resurrection plant Craterostigma plantagineum.
Article in Planta, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 33 citations in OpenAlex.
- Transketolase-mediated erythrose-4-phosphate provides an essential source for anthocyanin biosynthesis in petunia.Horticulture research · 2025Article
- Cell Wall Invertase 4 Governs Sucrose-Hexose Homeostasis in the Apoplast to Regulate Wood Development in Poplar.Plants (Basel, Switzerland) · 2025Article
- Proline improves switchgrass growth and development by reduced lignin biosynthesis.Scientific reports · 2019Article
- Article
- Review
- Cellular Biochemical Changes in Selaginella tamariscina (Beauv.) Spring and Sellaginella plana (Desv. ex Poir.) Heiron. as Induced by Desiccation.Tropical life sciences research · 2016Article
- The role of transketolase and octulose in the resurrection plant Craterostigma plantagineum.Journal of experimental botany · 2016Article
- Article
- Desiccation tolerance in resurrection plants: new insights from transcriptome, proteome and metabolome analysis.Frontiers in plant science · 2013Article
- Low and high ψ ways from post-transcriptional RNA regulation to drought tolerance.Plant signaling & behavior · 2010Review
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The desiccation tolerant resurrection plant Craterostigma plantagineum encodes three classes of transketolase transcripts, which are distinguished by their gene structures and their expression patterns. One class, represented by tkt3, is constitutively expressed and two classes, represented by tkt7 and tkt10, are upregulated upon rehydration of desiccated C. plantagineum plants. The objective of this work was to characterize the differentially expressed transketolase isoforms with respect to subcellular localization and enzymatic activity. Using GFP fusion constructs and enzymatic activity assays, we demonstrate that C. plantagineum has novel forms of transketolase which localize not to the chloroplast, but mainly to the cytoplasm and which are distinct in the enzymatic properties from the transketolase enzymes active in the Calvin cycle or oxidative pentose phosphate pathway. A transketolase preparation from rehydrated leaves was able to synthesize the unusual C8 carbon sugar octulose when glucose-6-phosphate and hydroxy-pyruvate were used as acceptor and donor molecules in in vitro assays. This suggests that a transketolase catalyzed reaction is likely to be involved in the octulose biosynthesis in C. plantagineum.
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