ibclogo XVI International Botanical Congess


Abstract Number: 3439
Poster No. = 1734


SHOOT - COMPOUND LEAF COMPARISONS: PROCESS MORPHOLOGY IN OPERATION AT DIFFERENT LEVELS


*C. Lacroix & **B. Jeune. *Univ. of Prince Edward Island, Charlottetown, CANADA & **Univ. P. & M. Curie, Paris, FRANCE


Recent developmental studies suggest that the compound leaf is a more or less incompletely developed shoot. Instead of considering leaves & shoots as non homologous, this interpretation draws a continuum between leaves & shoots. This study focuses on the dynamic nature of development by considering the plant as a hierarchical series of subunits on which similar developmental processes are at work. Measurements related to the expression of developmental processes operating on leaves at the shoot level and leaflets at the compound leaf level were used to determine if similar processes are at work at these different levels during organogenesis. Based on principle components analysis of the average values of those measurements, results show a dynamic continuum between so called compound leaves & shoots in a variety of species.


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