Handbook of Plant and Crop Physiology

with type 1 anatomy, had quite negative osmotic potentials in their ST-CC complex when compared with mesophyll cells, thereby de ...

uations, unloading includes transfer of assimilates to a parasite or symbiont. Clearly, the pathway must be apoplastic if the si ...

VII. XENOBIOTIC TRANSPORT Understanding of the transport of xenobiotics is essential to the judicious development and use of sys ...

otic. If permeability is too low, very small amounts of the material will enter the sieve tubes. If perme- ability is too high, ...

ducing oligosaccharides and sugar alcohols are translocated by this system. For many plants, sucrose ap- pears to be the only ca ...

BR Thomas, RL Rodriguez. Physiol Plant 106:1235, 1994. R Turgeon. Annu Rev Plant Physiol Plant Biochem 40:119, 1989. W-H Cheng, ...

JW Gonzales, AM Rhodes, D Dickinson. Plant Physiol 58:28, 1976. DB Dickinson, CD Boyer, JG Velu. Phytochemistry 22:1371, 1983. ...

J Van Die, PML Tammes. In: MH Zimmermann, JA Milburn, eds. Encyclopedia of Plant Physiology, Vol I, Transport in Plants, Part I ...

WD Jeschke, CA Atkens, JS Pate. J Plant Physiol 117:319, 1985. D Lamb. Plant Soil 45:477, 1976. GJ Waughman, DJ Bellamy. Ann Bo ...

NL Robinson, JE Hendrix. Plant Physiol 71:701, 1983. RT Giaquinta. Plant Physiol 57:872, 1976. RT Giaquinta. Plant Physiol 63:7 ...

JH Thorne, RM Rainbird. Plant Physiol 72:268, 1983. N Wang, DB Fisher. Plant Physiol 104:7, 1994. N Wang, DB Fisher. Plant Phys ...

21 Phloem Transport of Solutes in Crop Plants Edmund R. Miranda, Wattana Pattanagul, and Monica A. Madore University of Californ ...

of vascular tissues. This chapter emphasizes the phloem structure of the minor veins of leaves, the key in- terface of the phloe ...

between the two cell types. Because of the high degree of symplastic continuity between the companion cell and sieve element, th ...

452 MIRANDA ET AL. Figure 3 Cross section of a lilac (Syringa vulgarisL.) source leaf showing a minor vein. C, companion cell; S ...

PHLOEM TRANSPORT OF SOLUTES IN CROP PLANTS 453 Figure 4 Diagrammatical representations of the classes of minor vein companion ce ...

phloem structure. Phloem loading in source tissues leads to the very high solute concentrations charac- teristic of the phloem. ...

PHLOEM TRANSPORT OF SOLUTES IN CROP PLANTS 455 Figure 5 Chemical structures of (A) phloem-mobile sugars, (B) sugar alcohols, and ...

species [30]. Feeding experiments with cadaverine and spermidine have exhibited reduced phloem sap levels of putrescine, which d ...

Growth Regulators All classes of naturally occurring plant growth regulators (auxins, gibberellins, cytokinins, abscisic acid) ...