bundle sheath


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bundle sheath

[′bənd·əl ‚shēth]
(botany)
A sheath around a vascular bundle that consists of a layer of parenchyma.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
This fact suggests, once again, that these tissues might have a function similar to that of the hypodermis and the bundle sheath extensions.
There are sclerenchyma cells only at phloem poles and parenchymatic bundle sheath in the vascular bundles.
The advantage here is that a very efficient carbon-capturing enzyme, PEP carboxylase, is present in mesophyll cells to collect great quantities of C[O.sub.2] and feed it into bundle sheath cells surrounding the vascular system.
In C4 plants like maize, CO2 is primarily fixed to form malate in MC and then transferred into bundle sheath cells (BSC) by the C4 pathway to generate NADPH and release CO2, which is reduced by Calvin cycle.
overlying the sclerenchymatous vascular bundle sheath and at borders of
Partitioning of carboxylase activity in nitrogen-stressed sugarcane and its relationship to bundle sheath leakiness to [CO.sub.2], photosynthesis and carbon isotope discrimination.
Bundle sheath is not prominent in small VBs, while sheath cells are of single and complete layer in large VBs (Table 1; Fig.
Bundle sheaths that sedimented to the bottom of the tube were resuspended in a medium containing 0.5 M sucrose, 1 mM Ca[Cl.sub.2], 5 mM HEPES-KOH (pH 7.0), and 91 g [L.sup.-1] dextran T40, which was overlaid with 0.5 M sorbitol, 1 mM Ca[Cl.sub.2], and 5 mM HEPES-KOH (pH 7.0).
in leaf blade vascular bundle sheath cells is equivocal, and reinvestigation is therefore needed.
testudinum deduced from a rugose appearance of the potholes (caused by dead bundle sheaths) and the presence of dead rhizome material in the sediment.
Hypochlorite digested chordae showed a lamellar disposition formed by collagen bundle sheaths with longitudinal orientation.