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Intercellular pathways in internodal metaxylem vessels of moso bamboo Phyllostachys edulis

Intercellular pathways in internodal metaxylem vessels of moso bamboo Phyllostachys edulis ABSTRACTThe flow of xylem sap in bamboo is closely associated with metaxylem vessels and the pits in their cell walls. These pits are essential components of the water-transport system and are key intercellular pathways for transverse permeation of treatment agents related to utilization. Observations of metaxylem vessels and pits in moso bamboo culm internodes were carried out using environmental scanning electron microscopy (ESEM) to examine mature bamboo fractures and resin casts. The results showed that bordered pits were distributed in relation to adjacent cell types with most pits between vessels and parenchyma cells and few pits between vessels and fibers of the bundle sheath. The pit arrangement was mainly opposite to alternate with apertures ranging from oval, flattened elliptical, or slit-like to coalescent. The vertical dimensions of inner apertures and outer apertures of the pits were about 0.9–2.7 μm and 1.1–3.8 μm, respectively. According to the relative position, and size difference between the inner apertures and their borders, the bordered pit shapes were categorized into three types, namely PI, PII and PIII (Fig. 3C). Half-bordered pit pairs were observed between vessels and direct contact parenchyma cells. Most vessel elements possessed simple perforation plates. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png IAWA Journal Brill

Intercellular pathways in internodal metaxylem vessels of moso bamboo Phyllostachys edulis

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References (29)

Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0928-1541
eISSN
2294-1932
DOI
10.1163/22941932-40190237
Publisher site
See Article on Publisher Site

Abstract

ABSTRACTThe flow of xylem sap in bamboo is closely associated with metaxylem vessels and the pits in their cell walls. These pits are essential components of the water-transport system and are key intercellular pathways for transverse permeation of treatment agents related to utilization. Observations of metaxylem vessels and pits in moso bamboo culm internodes were carried out using environmental scanning electron microscopy (ESEM) to examine mature bamboo fractures and resin casts. The results showed that bordered pits were distributed in relation to adjacent cell types with most pits between vessels and parenchyma cells and few pits between vessels and fibers of the bundle sheath. The pit arrangement was mainly opposite to alternate with apertures ranging from oval, flattened elliptical, or slit-like to coalescent. The vertical dimensions of inner apertures and outer apertures of the pits were about 0.9–2.7 μm and 1.1–3.8 μm, respectively. According to the relative position, and size difference between the inner apertures and their borders, the bordered pit shapes were categorized into three types, namely PI, PII and PIII (Fig. 3C). Half-bordered pit pairs were observed between vessels and direct contact parenchyma cells. Most vessel elements possessed simple perforation plates.

Journal

IAWA JournalBrill

Published: Jan 2, 2019

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