ArticleJournal of experimental botany2015
Kranz and single-cell forms of C4 plants in the subfamily Suaedoideae show kinetic C4 convergence for PEPC and Rubisco with divergent amino acid substitutions.
Article in Journal of experimental botany, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed, 20 citations in OpenAlex.
- Leaf transcriptomes from C3, C3-C4 intermediate, and C4Neurachne species give insights into C4 photosynthesis evolution.Plant physiology · 2024Article
- Multiple highly expressed phosphoenolpyruvate carboxylase genes have divergent enzyme kinetic properties in two C4 grasses.Annals of botany · 2023Article
- Genome-Wide Identification and Analysis of the Phosphoenolpyruvate Carboxylase Gene Family inFrontiers in plant science · 2021Article
- Lateral Gene Transfer Acts As an Evolutionary Shortcut to Efficient C4 Biochemistry.Molecular biology and evolution · 2020Article
- Exploring molecular evolution of Rubisco in CBMC evolutionary biology · 2020Article
- Evolutionary Convergence of CFrontiers in plant science · 2020Article
- Kinetic Modifications of CFrontiers in plant science · 2020Article
- The genetics of convergent evolution: insights from plant photosynthesis.Nature reviews. Genetics · 2019Review
- Cloning, Expression and Characterization of Two Beta Carbonic Anhydrases from a Newly Isolated COIndian journal of microbiology · 2019Article
- A single serine to alanine substitution decreases bicarbonate affinity of phosphoenolpyruvate carboxylase in C4Flaveria trinervia.Journal of experimental botany · 2019Article
- EfficientFrontiers in plant science · 2019Article
- Identification of the allosteric site for neutral amino acids in the maize CThe Journal of biological chemistry · 2018Article
- Article
- Surveying Rubisco Diversity and Temperature Response to Improve Crop Photosynthetic Efficiency.Plant physiology · 2016Article
- Rubisco Catalytic Properties and Temperature Response in Crops.Plant physiology · 2016Article
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6 authors at 2 institutions in 2 countries.
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No grant is acknowledged in the PubMed record.
Abstract
The two carboxylation reactions performed by phosphoenolpyruvate carboxylase (PEPC) and ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) are vital in the fixation of inorganic carbon for C4 plants. The abundance of PEPC is substantially elevated in C4 leaves, while the location of Rubisco is restricted to one of two chloroplast types. These differences compared with C3 leaves have been shown to result in convergent enzyme optimization in some C4 species. Investigation into the kinetic properties of PEPC and Rubisco from Kranz C4, single cell C4, and C3 species in Chenopodiaceae s. s. subfamily Suaedoideae showed that these major carboxylases in C4 Suaedoideae species lack the same mutations found in other C4 systems which have been examined; but still have similar convergent kinetic properties. Positive selection analysis on the N-terminus of PEPC identified residues 364 and 368 to be under positive selection with a posterior probability >0.99 using Bayes empirical Bayes. Compared with previous analyses on other C4 species, PEPC from C4 Suaedoideae species have different convergent amino acids that result in a higher K m for PEP and malate tolerance compared with C3 species. Kinetic analysis of Rubisco showed that C4 species have a higher catalytic efficiency of Rubisco (k catc in mol CO2 mol(-1) Rubisco active sites s(-1)), despite lacking convergent substitutions in the rbcL gene. The importance of kinetic changes to the two-carboxylation reactions in C4 leaves related to amino acid selection is discussed.
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