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Annals of Botany 86: 1051-1054, 2000
© 2000 Annals of Botany Company

COMMUNICATION

Casparian Strips in the Leaf Intrastelar Canals of Isoetes duriei Bory, a Mediterranean Terrestrial Species

D. Romeo, A. Troìa+, C. Burgarella and E. Bellini

Dipartimento di Scienze Botaniche dell'Università, via Archirafi 38, 90123 Palermo, Italy

Received: 27 April 2000 ; Returned for revision: 11 May 2000 . Accepted: 4 August 2000

ABSTRACT

Anatomical observations, using light and fluorescence microscopy, were made on leaves of Isoetes duriei to verify the presence of casparian bands around the intrastelar canals. This peculiar anatomical feature, previously reported for some Isoetes species, is confirmed. The possible role of this endodermis-like structure, in the transport of water due to root pressure or in the accumulation of certain metabolites, is discussed in relation to the ecological and anatomical features of the species. Copyright 2000 Annals of Botany Company

Isoetes duriei, Lycopsida, Mediterranean, leaf anatomy, endodermis, casparian strips, fluorescence microscopy


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