In addition, a higher
bundle sheath proportion was observed in U.
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.