Claim · model-written summary
Subgroup II-1 genes evolve at a lower substitution rate than subgroup II-2 genes.
- Taxon
- land plantsEmbryophytat0
- Gene
- subgroup II-1 genese0
- Outcome
- substitution ratee0
- Direction
- lowere0
- Comparator
- II-2 genese0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Verbatim
e0“subgroup II-1 genes are constrained by stronger purifying selection and evolve at a lower substitution rate than II-2 genes”
t0“land plants”
Title
Evolution and divergence of SBP-box genes in land plants
Shu-Dong Zhang; Li-Zhen Ling; Ting-Shuang Yi BMC Genomics 2015. doi:10.1186/s12864-015-1998-y
Other claims from this paper (9)
- Observation The 104 SBP-box genes divide into group I and II, and group II further into subgroups II-1 and II-2 by phylogenetic analysis.
- Observation Subgroup II-1 genes have sequence and structural features similar to group I genes.
- Observation Subgroup II-2 genes differ intrinsically on these features, including high copy numbers and miR156/miR529 regulation.
- Association Subgroup II-1 genes are constrained by stronger purifying selection than subgroup II-2 genes.
- Association Among subgroup II-2 genes, miR156 targets evolve more rapidly than miR529 targets.
- Association Among subgroup II-2 genes, miR156 targets experience comparatively relaxed purifying selection relative to miR529 targets.
- Mechanism Subgroup II-2 genes evolve under relaxed purifying selection and have diversified through gene copy duplications and changes in miR156/529 regulation.
- Mechanism The authors hypothesize that this diversification might contribute to morphological diversifications of land plants.
- Mechanism Different evolutionary rates and selection strengths lead to differing evolutionary patterns in SBP-box genes in land plants.