Claim · model-written summary
Unstable anthocyanin pigmentation was independently found six times.
- Taxon
- Alfalfa
Medicago sativae0 - Outcome
- unstable anthocyanin pigmentatione0
- Value
- six occasionse0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Alfalfa with unstable anthocyanin pigmentation has been independently discovered on six occasions since 1958”
Title
Alfalfa transposable elements and variegation
E. T. Bingham; W. M. Clement Developmental Genetics 1989. doi:10.1002/dvg.1020100614
Other claims from this paper (13)
- Observation All six unstable stocks traced to a mutable C2 allele.
- Observation m1, m2 and m3 showed similar variegation with recessive-to-dominant reversion.
- Observation Reversion produced pigment streaks and sectors in otherwise white petals and seeds.
- Observation Reversion could occur at different development times and produce periclinal chimeras.
- Observation c2‐m4 arose during tissue culture, unlike the other mutables found in populations.
- Observation m4 was very stable in plants and rarely made sectored flowers.
- Observation m4 was unstable in vitro, with about 23% revertant regenerated plants.
- Observation Most m4 reversion happened early, producing fully pigmented in vitro plants and large in planta sectors.
- Observation m5 and m6 were phenotypically and genetically similar.
- Observation m5 and m6 flowers were purple with white streaks, indicating dominant-to-recessive mutation.
- Observation White progeny of m5 and m6 were stable, with no observed white-to-purple reversion.
- Mechanism Absolute stability of m5 white derivatives favored a deficiency model.
- Mechanism Recurring mutations in mutable populations were speculated to result from transposable-element movement.