Claim · model-written summary
SoPIN1 remains in the angiosperms sampled other than the Brassicaceae, where it was likely lost
- Taxon
- angiospermsMagnoliopsidae1
- Gene
- SoPIN1e1
- Outcome
- remains in all other angiosperms samplede1
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Verbatim
e1“I identified an angiosperm PIN clade placed sister to PIN1, here termed Sister-of-PIN1 (SoPIN1), that has likely been lost within the Brassicaceae, including in Arabidopsis, but remains in all other angiosperms sampled”
Title
PINs lost and PINs gained: Auxin-transport mediated patterning in the grasses
Devin O’Connor eScholarship (California Digital Library) 2012
Other claims from this paper (9)
- Observation PIN1 duplicated into PIN1a and PIN1b as a conserved feature within the grasses
- Observation SoPIN1 expression is highest in the epidermis of maize and Brachypodium and oriented toward DR5 auxin reporter maxima
- Mechanism SoPIN1 may function in the creation of auxin maxima in maize and Brachypodium
- Observation PIN1a and PIN1b localization is largely absent from the epidermis and oriented rootward in the internal tissues
- Mechanism PIN1a and PIN1b may transport auxin after maxima formation during canalization of leaf and stem veins
- Mechanism The data support a functional division of PIN proteins into maxima creation and canalization modes in grasses
- Mechanism Loss of SoPIN1 in the Brassicaceae may make PIN1 unique among angiosperms in switching between auxin transport modes
- Mechanism The PIN1a/PIN1b duplication in the grass lineage may relate to novel morphological and anatomical characteristics of monocot plants
- Mechanism Preliminary PIN knockdown experiments suggest a role for PIN-mediated patterning in apical dominance, meristem maintenance and leaf patterning in grasses