scholarly journals Quantitative and Qualitative Changes of Cell Wall Polysaccharides during Somatic Embryogenesis and Plantlet Development of Asparagus (Asparagus officinalis L.)

1998 ◽  
Vol 39 (6) ◽  
pp. 607-614 ◽  
Author(s):  
U.-D. Yeo ◽  
H. Kohmura ◽  
N. Nakagawa ◽  
N. Sakurai
Keyword(s):  
Cell Wall ◽  
Somatic Embryogenesis ◽  
Asparagus Officinalis ◽  
Cell Wall Polysaccharides ◽  
Qualitative Changes

Structural features of the cell-wall polysaccharides of Asparagus officinalis seeds

1991 ◽  
Vol 210 ◽  
pp. 263-276 ◽  
Author(s):  
Renee Goldberg ◽  
Laurence Gillou ◽  
Roger Prat ◽  
Catherine Herve Du Penhoat ◽  
Veronique Michon
Keyword(s):  
Cell Wall ◽  
Structural Features ◽  
Asparagus Officinalis ◽  
Cell Wall Polysaccharides

Cell wall differentiation during early somatic embryogenesis in plants. I. Scanning and transmission electron microscopy study on embryos originating from direct, indirect, and adventitious pathways

2000 ◽  
Vol 78 (6) ◽  
pp. 816-823 ◽  
Author(s):  
Audrey Chapman ◽  
Anne-Sophie Blervacq ◽  
Jean-Pierre Tissier ◽  
Bruno Delbreil ◽  
Jacques Vasseur ◽  
...  
Keyword(s):  
Cell Wall ◽  
Somatic Embryogenesis ◽  
Intermediate Stage ◽  
Microscopy Study ◽  
Electron Microscopy Study ◽  
Asparagus Officinalis ◽  
Fibrillar Structure ◽  
Electron Microscopic ◽  
Transmission Electron ◽  
Fibrillar Network

In three modes of somatic embryogenesis, direct (Cichorium), indirect (Citrus), and adventitious (Asparagus), a layer enveloped the proembryo and separated it from parenchyma or callus cells. This layer was either torn or partly dissolved during embryo expansion and led to a reticulated fibrillar structure linking the peripheral cells of the embryo prior to protoderm differentiation. Scanning electron microscopic and transmission electron microscopic analyses revealed it as a net-like structure composed of thick fibres restricted to the embryo surface during a specific developmental stage. Stereo pairs of micrographs revealed its two-dimensional arrangement. The spatio-temporal localization of this fibrillar network defined it as an intermediate stage of somatic embryogenesis in monocotyledonous and dicotyledonous species irrespective of their modes of development. Hypotheses concerning the origin of the fibrillar network are provided, and its possible functions during somatic embryogenesis are discussed.Key words: Asparagus officinalis L. (asparagus), cell wall, Cichorium (chicory), Citrus (Troyer citrange), somatic embryogenesis.

Turnover of cell-wall polysaccharides during somatic embryogenesis and development of celery (Apium graveolens L.)

1999 ◽  
Vol 42 (1) ◽  
pp. 8-15 ◽  
Author(s):  
Up-Dong Yeo ◽  
Jung-Yeun Han ◽  
Yong-Eui Choi ◽  
Woong-Young Soh ◽  
Naoki Nakagawa ◽  
...  
Keyword(s):  
Cell Wall ◽  
Somatic Embryogenesis ◽  
Apium Graveolens ◽  
Cell Wall Polysaccharides

Relationships between Soybean Seed Cell Wall Polysaccharides, Yield, and Seed Traits

Crop Science ◽  
2003 ◽  
Vol 43 (2) ◽  
pp. 571 ◽  
Author(s):  
S. K. Stombaugh ◽  
J. H. Orf ◽  
H. G. Jung ◽  
D. A. Somers
Keyword(s):  
Cell Wall ◽  
Soybean Seed ◽  
Seed Traits ◽  
Cell Wall Polysaccharides ◽  
Seed Cell

scholarly journals Plant Cell Wall Hydration and Plant Physiology: An Exploration of the Consequences of Direct Effects of Water Deficit on the Plant Cell Wall

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1263
Author(s):  
David Stuart Thompson ◽  
Azharul Islam
Keyword(s):  
Cell Wall ◽  
Water Content ◽  
Bacterial Cellulose ◽  
Plant Cell ◽  
Cell Walls ◽  
Plant Cell Wall ◽  
Plant Cell Walls ◽  
Cell Wall Polysaccharides ◽  
Degree Of Hydration ◽  
Cellulose Composites

The extensibility of synthetic polymers is routinely modulated by the addition of lower molecular weight spacing molecules known as plasticizers, and there is some evidence that water may have similar effects on plant cell walls. Furthermore, it appears that changes in wall hydration could affect wall behavior to a degree that seems likely to have physiological consequences at water potentials that many plants would experience under field conditions. Osmotica large enough to be excluded from plant cell walls and bacterial cellulose composites with other cell wall polysaccharides were used to alter their water content and to demonstrate that the relationship between water potential and degree of hydration of these materials is affected by their composition. Additionally, it was found that expansins facilitate rehydration of bacterial cellulose and cellulose composites and cause swelling of plant cell wall fragments in suspension and that these responses are also affected by polysaccharide composition. Given these observations, it seems probable that plant environmental responses include measures to regulate cell wall water content or mitigate the consequences of changes in wall hydration and that it may be possible to exploit such mechanisms to improve crop resilience.

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