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May 24, 2026Evolution

Convergence, stability, and thermal adaptation of the rubisco large subunit in plants

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Authors

ALArthur LeungBCBelinda S W ChangRSRowan F. Sage

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Overview

Randomized trial examines thermal adaptation of rubisco in plants, indicating environmental effects on stability.

Key Points

  • This research investigates how rubisco evolves in response to different thermal environments and its implications for plant stability.
  • Examined molecular evolution of rubisco large subunit in four plant genera: Dryopteris, Limonium, Pinus, and Viburnum.
  • Analyzed changes in folding free energy (ΔΔG) and positive selection patterns using codon evolutionary models.
  • Applied protein structure-based modeling to evaluate hydrogen bond contributions to stability related to seasonal temperatures.
  • Positive selection was observed in the catalytic domain of rubisco across all genera.
  • Species with warmer growing seasons had amino acids that improved hydrogen bonding, but total ΔΔG did not correlate with temperature.
  • The strength of positive selection varied by biome in Viburnum, particularly in colder regions.

Cite This Study

Leung et al. (2026) studied this question.

synapsesocial.com/papers/6a1295ce48a0ea1665672229https://doi.org/10.1093/evolut/qpag093
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