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Free Content Axillary meristem development in Arabidopsis thaliana

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Axillary shoot apical meristems initiate post-embryonically in the axils of leaves. Their developmental fate is a main determinant of the final plant body plan. In Arabidopsis, usually a single axillary meristem initiates in the leaf axil even though there is developmental potential for formation of multiple branches. While the wild-type plants rarely form multiple branches in the leaf axil, tfl1-2 plants regularly develop two or more branches in the axils of the rosette leaves. Axillary meristem formation in Arabidopsis occurs in two waves: an acropetal wave forms during plant vegetative development, and a basipetal wave forms during plant reproductive development. We report here the morphological and anatomical changes, and the STM expression pattern associated with the formation of axillary and accessory meristems during Arabidopsis vegetative development.
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Document Type: Research Article

Affiliations: 1: Department of Plant Sciences, University of Western Ontario, London, Ontario N6A 5B7, Canada, and 2: Botany Department, Birge Hall, University of Wisconsin, Madison, Wisconsin 53706, USA

Publication date: January 1, 2000

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