Dynamics of plasmodesmal connectivity in successive interfaces of the cambial zone

被引:50
作者
Ehlers, Katrin [1 ]
van Bel, Aart J. E. [1 ]
机构
[1] Univ Giessen, Inst Gen Bot, D-35390 Giessen, Germany
关键词
Cambium; Dye coupling; Hydroxyl radical; Peroxidase; Plant development; Plasmodesmata; SHOOT APICAL MERISTEM; TO-CELL COMMUNICATION; SECONDARY PLASMODESMATA; ENDOPLASMIC-RETICULUM; MEMBRANE-PROTEINS; PHLOEM TRANSPORT; MOVEMENT; TRAFFICKING; LOCALIZATION; ACCUMULATION;
D O I
10.1007/s00425-009-1046-8
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
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.
引用
收藏
页码:371 / 385
页数:15
相关论文
共 59 条
[2]   Control of Arabidopsis meristem development by thioredoxin-dependent regulation of intercellular transport [J].
Benitez-Alfonso, Yoselin ;
Cilia, Michelle ;
Roman, Adrianna San ;
Thomas, Carole ;
Maule, Andy ;
Hearn, Stephen ;
Jackson, David .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2009, 106 (09) :3615-3620
[3]   The symplasmic coupling of L-2-cells diminishes in early floral development of Iris [J].
Bergmans, ACJ ;
deBoer, AD ;
Derksen, JWM ;
vanderSchoot, C .
PLANTA, 1997, 203 (02) :245-252
[4]   Localization of hydrogen peroxide accumulation during the hypersensitive reaction of lettuce cells to Pseudomonas syringae pv phaseolicola [J].
Bestwick, CS ;
Brown, IR ;
Bennett, MHR ;
Mansfield, JW .
PLANT CELL, 1997, 9 (02) :209-221
[5]   Growth of the plant cell wall [J].
Cosgrove, DJ .
NATURE REVIEWS MOLECULAR CELL BIOLOGY, 2005, 6 (11) :850-861
[6]   SUBSTRUCTURE OF FREEZE-SUBSTITUTED PLASMODESMATA [J].
DING, B ;
TURGEON, R ;
PARTHASARATHY, MV .
PROTOPLASMA, 1992, 169 (1-2) :28-41
[7]   Control of directional macromolecular trafficking across specific cellular boundaries: A key to integrative plant biology [J].
Ding, Biao ;
Itaya, Asuka .
JOURNAL OF INTEGRATIVE PLANT BIOLOGY, 2007, 49 (08) :1227-1234
[8]   Ultrastructural features of well-preserved and injured sieve elements: minute clamps keep the phloem transport conduits free for mass flow [J].
Ehlers, K ;
Knoblauch, M ;
van Bel, AJE .
PROTOPLASMA, 2000, 214 (1-2) :80-92
[9]  
Ehlers K, 1996, PLANTA, V199, P126
[10]   Primary and secondary plasmodesmata: structure, origin, and functioning [J].
Ehlers, K ;
Kollmann, R .
PROTOPLASMA, 2001, 216 (1-2) :1-30