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DOI: 10.1055/s-2001-12899
Organization of the Stigma and Transmitting Tissue of Rice, Oryza sativa (L.)[1]
Publication History
December 5, 2000
January 30, 2001
Publication Date:
31 December 2001 (online)
![](https://www.thieme-connect.de/media/plantbiology/200102/lookinside/thumbnails/10.1055-s-2001-12899-1.jpg)
Abstract
The stigma of Oryza sativa (L.) is typically dry and plumose. The pistil is bifurcated just above the ovary. The distal parts of the two main branches are densely covered by multicellular, multiseriate papillae. The papillae are covered by a cuticle-pellicle layer. The pecto-cellulosic wall of the papillae is distinctly three-layered. The transmitting tracts of the two main axes are not clearly demarcated, and are made up of several compactly arranged cell layers around the vascular bundle. The cells of the transmitting tissue are polygonal, narrow and elongated. They show plasmodesmata on the transverse, as well as longitudinal walls. The extracellular matrix in the transmitting tissue, containing polysaccharides and pectic substances, is restricted to the corners of the cells, forming long, narrow, linear canals along the axes.
Abbreviations
ECM: Extracellular matrix
Key words
Oryza sativa - stigma and style - transmitting tissue - ultrastructure
1 The present work was initiated just a few weeks before the death of Prof. J. Heslop-Harrison. The authors dedicate the paper to the memory of this irreplaceable teacher.
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1 The present work was initiated just a few weeks before the death of Prof. J. Heslop-Harrison. The authors dedicate the paper to the memory of this irreplaceable teacher.
F. Ciampolini
Dipartimento di Scienze Ambientali
Università degli Studi di Siena
Via P. A. Mattioli n. 4
53100 Siena
Italy
Email: ciampolini@unisi.it
Section Editor: A. M. C. Emons