An extensin-rich matrix lines the carinal canals in Equisetum ramosissimum, which may function as water-conducting channels.

ABSTRACT:

Background and aims

The anatomy of Equisetum stems is characterized by the occurrence of vallecular and carinal canals. Previous studies on the carinal canals in several Equisetum species suggest that they convey water from one node to another.

Methods

Cell wall composition and ultrastructure have been studied using immunocytochemistry and electron microscopy, respectively. Serial sectioning and X-ray computed tomography were employed to examine the internode-node-internode transition of Equisetum ramosissimum.

Key results

The distribution of the LM1 and JIM20 extensin epitopes is restricted to the lining of carinal canals. The monoclonal antibodies JIM5 and LM19 directed against homogalacturonan with a low degree of methyl esterification and the CBM3a probe recognizi

SUBMITTER: Leroux O 

PROVIDER: S-EPMC3143055 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature