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1 t sucrose 20 times faster than a single 20 m sieve tube.
2  serial arrangement of sieve elements in the sieve tube.
3 ssure-flow theory as they severely constrict sieve tubes.
4 in the lumen are a general feature of living sieve tubes.
5 port in the relatively minor extrafascicular sieve tubes.
6  sugar from the apoplast into the conducting sieve tubes.
7 d to the formation of tracheary elements and sieve tubes.
8    Even the largest tracer injected into the sieve tubes, 400-kD fluorescein-labeled Ficoll with a St
9 e transport as they grow taller by analysing sieve tube anatomy, including sieve plate geometry, usin
10 jor to minor veins; the volume of individual sieve tube and vessel members increases from minor to ma
11 Pa drop in turgor pressure between the grain sieve tubes and vascular parenchyma cells.
12                 Sap is driven through phloem sieve tubes by an osmotically generated pressure gradien
13 uced the amplitudes of electrical signals in sieve tube cells.
14 increasing distance between source and sink, sieve tube conductivity and turgor increases dramaticall
15  suggests a high hydraulic resistance in the sieve tubes connecting the two.
16 n electron microscopic images suggested that sieve tubes contain obstructions that would prevent pass
17 ing tissue dissection and direct sampling of sieve tube contents, we show that FP in fact does contai
18 bservation, it is suggested that 20 1-m-long sieve tubes could transport sucrose 20 times faster than
19 sed starchy endosperm volume, enhanced grain sieve tube development and upregulation of genes for sta
20  yielded evidence that PSTVd movement within sieve tubes does not simply follow mass flow from source
21                 Because of the sieve plates, sieve tube elasticity does not provide a significant enh
22 odies raised against proteins present in the sieve-tube exudate of Ricinus communis (castor bean) see
23                                   Within the sieve-tube exudate, profilin was present in 15-fold mola
24  the first ultrastructural investigations of sieve tubes in the early 1960s, their structure has been
25  The key issue is whether the conductance of sieve tubes, including sieve plate pores, is sufficient
26        The transit time of sucrose through a sieve tube is found to be inversely proportional to the
27 ration artifacts due to injury, the lumen of sieve tubes is free of obstructions, and phloem flow is
28 on of pressure-concentration waves in phloem sieve tubes is not significantly impeded by wall elastic
29 centration front, and the effect of changing sieve tube length on the transport of sucrose in both th
30 ere shown to decrease the number of parallel sieve tubes needed for phloem transport, leading to a mo
31 ecrease in exudation probably due to partial sieve tube occlusion by callose.
32 ioration of osmotic stress, wounding-induced sieve tube occlusion, and possibly local defence respons
33         In sum, wounding triggered transient sieve tube occlusion, enhanced energy metabolism, and ac
34         Thick glistening cell walls occur in sieve tubes of all major land plant taxa.
35 ion of quantitative anatomical data from the sieve tubes of angiosperm phloem has been confounded by
36           Moreover, major phloem proteins in sieve tubes of FP differ from those that predominate in
37   In cucurbits, phloem latex exudes from cut sieve tubes of the extrafascicular phloem (EFP), serving
38  Long distance transport in plants occurs in sieve tubes of the phloem.
39  injected via severed aphid stylets into the sieve tubes of wheat (Triticum aestivum L.) grains to ev
40       Cucurbit phloem is complex, with large sieve tubes on both sides of the xylem (bicollateral phl
41 e to the conclusion that obstructions in the sieve-tube path were due to preparation artifacts.
42  inversely proportional to the square of the sieve tube's length; following that observation, it is s
43 sA was also directly detected in Arabidopsis sieve tube sap collected from an English green aphid (Si
44 s, thus confirming the role of P-proteins in sieve tube sealing.
45                                              Sieve tube-specific conductivity and its reduction by ca
46 ial was used to calculate rough estimates of sieve tube-specific conductivity for both species.
47  16 amino acids in wheat (Triticum aestivum) sieve tube (ST) samples as small as 2 nL collected by se
48 y constant, which in turn permits changes in sieve tube state to be rapidly transmitted throughout th
49                                      Because sieve tube structure defines frictional interactions in
50 rding the nature of other metabolites in the sieve tube system (STS) at specific sites along the path
51 y depend on the geometry of the microfluidic sieve tube system and especially on the anatomy of sieve
52                               The angiosperm sieve tube system contains a unique population of transc
53                                The anucleate sieve tube system of the angiosperm phloem delivers suga
54 ating protein synthesis within the enucleate sieve tube system of the angiosperms.
55     In angiosperms, the functional enucleate sieve tube system of the phloem appears to be maintained
56 ed to test the hypothesis that the enucleate sieve tube system utilizes a simplified signal transduct
57 with respect to functioning of the enucleate sieve tube system, as eIF5A was recently detected in Cuc
58  trafficking between companion cells and the sieve tube system.
59 n higher plants takes place in the enucleate sieve-tube system of the phloem.
60 icroscopy, focusing on changes in functional sieve tubes that occur when prepared for microscopic obs
61         These included direct measurement of sieve tube turgor and several independent approaches to
62                                              Sieve tube turgor measurements, osmotic concentrations,
63 ally watered plants, crease pericarp Psi and sieve tube turgor were almost 1 MPa lower than in the pe
64 paration protocol has been generated showing sieve tube ultrastructure of unprecedented quality.
65                          A reconstruction of sieve tube ultrastructure served as basis for tube resis
66 r results re-emphasize the importance of the sieve tube unloading step in the control of assimilate i
67  cells, where they are synthesized, into the sieve tube via plasmodesmata.
68 ate to be rapidly transmitted throughout the sieve tube via pressure-concentration waves.
69 equate attention to the elastic expansion of sieve tube walls.
70                       The mature, functional sieve tube, which forms the conduit for assimilate distr
71 allose within minutes, but plants containing sieve tubes with large pores need additional mechanisms.
72                                        Short sieve tubes would be highly sensitive to differentials b