Claim · model-written summary
Loss of SoPIN1 in the Brassicaceae may make PIN1 unique among angiosperms in switching between auxin transport modes
- Taxon
- BrassicaceaeBrassicaceaee0
- Gene
- PIN1e0
- Outcome
- ability to dynamically switch between these two functional modese0
Not reportedMaterialCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionValueQualifier
Verbatim
e0“the loss of SoPIN1 within the Brassicaceae suggests that PIN1 in this group may be unique amongst the angiosperms in its ability to dynamically switch between these two functional modes”
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 SoPIN1 remains in the angiosperms sampled other than the Brassicaceae, where it was likely lost
- 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 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