Adaptation of rbcL in Aquatic Plants
Author Information
Author(s): Iida Satoko, Miyagi Atsuko, Aoki Seishiro, Ito Motomi, Kadono Yasuro, Kosuge Keiko
Primary Institution: Kobe University
Hypothesis
Is there positive selection in the rbcL sequences of heterophyllous versus homophyllous aquatic plants?
Conclusion
The study found that positive selection acted on the rbcL gene in heterophyllous Potamogeton lineages, indicating different selective pressures compared to homophyllous lineages.
Supporting Evidence
- Phylogenetic analyses indicated that Potamogeton rbcL has evolved under positive Darwinian selection.
- Positive selection was specifically observed in heterophyllous lineages.
- 12 amino acid replacements were identified, with two potentially under positive selection.
Takeaway
Some water plants can change their leaves based on their environment, and this study shows that a specific gene in these plants has changed more in those that can adapt their leaves than in those that can't.
Methodology
Phylogenetic and maximum likelihood analyses of codon substitution models were used to examine positive selection in rbcL sequences.
Limitations
The study's findings may not apply to all aquatic plants due to the limited sample size and focus on specific lineages.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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