Frequency, density and branching of plasmodesmata were counted in successive tangential and transverse walls in the cambial zone of tomato stems in order to examine development of the plasmodesmal network in a chronological order. Coincident with progress of cell development, plasmodesmal connectivity increased, both at the xylem- and phloem-side. In transverse walls, the number of secondary plasmodesmata enhanced considerably. The same held for tangential walls, with a superimposed plasmodesmal doubling during the first phase of phloem development. This plasmodesmal doubling was interpreted to result from the deposition of wall material between branched plasmodesmal strands. Structural plasmodesmal development was correlated with production of hydroxyl radicals which control local cell wall alterations. Successive phases of plasmodesmal deployment and modification were distinguished which may coincide with differential functional capacities as documented by intracellular injection of fluorochromes. Diffusion-driven symplasmic transport appeared to be transiently interrupted during cell maturation.
机构:Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Benitez-Alfonso, Yoselin
;
Cilia, Michelle
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Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USACold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Cilia, Michelle
;
Roman, Adrianna San
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Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USACold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Roman, Adrianna San
;
Thomas, Carole
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机构:
John Innes Ctr, Norwich NR4 7UH, Norfolk, EnglandCold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Thomas, Carole
;
Maule, Andy
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John Innes Ctr, Norwich NR4 7UH, Norfolk, EnglandCold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Maule, Andy
;
Hearn, Stephen
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机构:Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Hearn, Stephen
;
Jackson, David
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机构:Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
机构:Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Benitez-Alfonso, Yoselin
;
Cilia, Michelle
论文数: 0引用数: 0
h-index: 0
机构:
Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USACold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Cilia, Michelle
;
Roman, Adrianna San
论文数: 0引用数: 0
h-index: 0
机构:
Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USACold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Roman, Adrianna San
;
Thomas, Carole
论文数: 0引用数: 0
h-index: 0
机构:
John Innes Ctr, Norwich NR4 7UH, Norfolk, EnglandCold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Thomas, Carole
;
Maule, Andy
论文数: 0引用数: 0
h-index: 0
机构:
John Innes Ctr, Norwich NR4 7UH, Norfolk, EnglandCold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Maule, Andy
;
Hearn, Stephen
论文数: 0引用数: 0
h-index: 0
机构:Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA
Hearn, Stephen
;
Jackson, David
论文数: 0引用数: 0
h-index: 0
机构:Cold Spring Harbor Lab, Watson Sch Biol Sci, Cold Spring Harbor, NY 11724 USA