EEB340 Lecture 11.docx

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Department
Ecology & Evolutionary Biology
Course
EEB340H1
Professor
Rowan Sage
Semester
Winter

Description
Lecture 10 Ancestral Tool Kit Ancestral Tool Kit for Land PlantsAuxin and TransportKNOXHDZIPin the peripheral zone there is a max of Auxinwhere leaf primordia developPIN proteins can control localized concentrations of auxin by transportVery low levels of auxin in algaeAlgae auxin transport o No polar transport o Efflux and influx carriers o No studies on PIN in the direct algal ancestorsHornworts and liverworts o Auxin present o No polar transportrather movement by difussion o No study on presence of absence of PINSMosses o Possible polar transport o PINs presentSelaginella o Polar transport o PINs present o Protostele and microphylls o Auxin transport directed from central region downwards o Next get vascularization of microphylls o Not sure if microphyll
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