Genetic analysis of leaf vascular patterning in Arabidopsis thaliana
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Date
2001
Authors
Steynen, Quintin John
University of Lethbridge. Faculty of Arts and Science
Journal Title
Journal ISSN
Volume Title
Publisher
Lethbridge : University of Lethbridge, University of Lethbridge. Faculty of Arts and Science, 2001
Abstract
I have isolated and characterized a recessive mutation in the Forked (FKD) gene that results in the abnormal initiation of vascular bundles in the foliar organs, such that the apices of the vascular bundles initiate freely. Once initiated, the development of Fkd vascular bundles is like wild type, generating an open vascular pattern of similar complexity to the closed venation pattern of wild type. Despite the significant alteration in the vascular pattern, Fkd plants are morphologically indistinct from wild type. fkd mutants do not show altered sensitivity to the effects of auxin and show additive phenotypes with auxin response mutants, suggesting the FKD is part of a pathway acting independently of auxin. The similarity of the open vascular pattern of Fkd plants to that of ancestral vascular plants suggests that acquisition of this pathway may have been critical in the evolution of the closed vascular pattern.
Description
x, 55 leaves : ill. ; 28 cm.
Keywords
Leaves -- Physiology , Vascular system of plants , Plants -- Motion of fluids in , Dissertations, Academic