scholarly journals Wall Ingrowths in Epidermal Transfer Cells of Vicia faba Cotyledons are Modified Primary Walls Marked by Localized Accumulations of Arabinogalactan Proteins

2006 ◽  
Vol 48 (1) ◽  
pp. 159-168 ◽  
Author(s):  
K. C. Vaughn ◽  
M. J. Talbot ◽  
C. E. Offler ◽  
D. W. McCurdy
Keyword(s):  
Vicia Faba ◽  
Arabinogalactan Proteins ◽  
Transfer Cells ◽  
Wall Ingrowths

Structure and ontogeny of Alnus crispa – Alpova diplophloeus ectomycorrhizae

1986 ◽  
Vol 64 (1) ◽  
pp. 177-192 ◽  
Author(s):  
H. B. Massicotte ◽  
R. L. Peterson ◽  
C. A. Ackerley ◽  
Y. Piché
Keyword(s):  
Structural Changes ◽  
Hyphal Growth ◽  
Root Surface ◽  
Epidermal Cells ◽  
Transfer Cells ◽  
Wall Ingrowths ◽  
Alnus Crispa ◽  
Hartig Net ◽  
Fungal Hyphae ◽  
Branching System

Alnus crispa (Ait.) Pursh seedlings were grown in plastic pouches and inoculated with Frankia to induce nodules and subsequently with Alpova diplophloeus (Zeller & Dodge) Trappe & Smith to form ectomycorrhizae. The earliest events in ectomycorrhiza formation involved contact of the root surface by hyphae, hyphal proliferation to form a thin mantle, and further hyphal growth to form a thick mantle. Structural changes in the host, the mycosymbiont, and the fungus–epidermis interface were described at various stages in the ontogeny of ectomycorrhizae. Fungal hyphae in contact with epidermal cells in the regions of intercellular penetration and paraepidermal Hartig net developed numerous rough endoplastic reticulum cisternae. In more proximal regions of the mycorrhiza, these gradually became fewer in number and smooth. A complicated labyrinthine wall branching system also developed in the fungus in these regions. Concurrently, epidermal cells formed wall ingrowths in regions adjacent to Hartig net hyphae. There was a gradient in the formation of these epidermal transfer cells as the mycorrhiza developed, and an additional deposition of secondary cell wall over the wall ingrowths occurred as transfer cells senesced. Nonmycorrhizal control roots did not develop epidermal wall ingrowths. Electron-dense material, which was also autofluorescent, was deposited in the outer tangential walls of the exodermis contiguous to the paraepidermal Hartig net.

scholarly journals Structural character of sorghum endosperm transfer cells and their relationship with embryo and endosperm

2010 ◽  
Vol 1 (2) ◽  
pp. 15 ◽  
Author(s):  
Yankun Zheng ◽  
Zhong Wang
Keyword(s):  
Sorghum Bicolor ◽  
Vascular Tissue ◽  
Transfer Cells ◽  
Experimental Results ◽  
Epithelial Layer ◽  
Wall Ingrowths ◽  
Endosperm Transfer Cells ◽  
Structural Character ◽  
Sorghum Bicolor L

Endosperm transfer cells mainly occur in the epithelial layer of the endosperm and transport the nutrient unloaded by the maternal vascular tissue. They have wall ingrowths that can facilitate solute transportation. Here we report our further investigation of endosperm transfer cells in sorghum (Sorghum bicolor L. Moench). We observed endosperm transfer cells, embryo, and endosperm with different kinds of microscopes. Our experimental results showed that the distribution and configuration of endosperm transfer cells were fit for solute transportation, and they had a tight relationship with the embryo and endosperm.

Sugar uptake by the dermal transfer cells of developing cotyledons of Vicia faba L.

Planta ◽  
1996 ◽  
Vol 198 (4) ◽  
pp. 502-509 ◽  
Author(s):  
R. McDonald ◽  
S. Fieuw ◽  
J. W. Patrick
Keyword(s):  
Vicia Faba ◽  
Transfer Cells ◽  
Sugar Uptake ◽  
Vicia Faba L

NaCl effect on the distribution of wall ingrowth polymers and arabinogalactan proteins in type A transfer cells of Medicago sativa Gabès leaves

PROTOPLASMA ◽  
2010 ◽  
Vol 242 (1-4) ◽  
pp. 69-80 ◽  
Author(s):  
Néziha Boughanmi ◽  
Florence Thibault ◽  
Raphael Decou ◽  
Pierrette Fleurat-Lessard ◽  
Emile Béré ◽  
...  
Keyword(s):  
Medicago Sativa ◽  
Type A ◽  
Arabinogalactan Proteins ◽  
Transfer Cells ◽  
Wall Ingrowth

Development of flange and reticulate wall ingrowths in maize (Zea mays L.) endosperm transfer cells

PROTOPLASMA ◽  
2012 ◽  
Vol 250 (2) ◽  
pp. 495-503 ◽  
Author(s):  
Paulo Monjardino ◽  
Sara Rocha ◽  
Ana C. Tavares ◽  
Rui Fernandes ◽  
Paula Sampaio ◽  
...  
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Transfer Cells ◽  
Wall Ingrowths ◽  
Endosperm Transfer Cells

Fine structure during ontogeny of xylem transfer cells in the rhizome of Hieracium floribundum

1975 ◽  
Vol 53 (5) ◽  
pp. 432-438 ◽  
Author(s):  
Edward C. Yeung ◽  
R. L. Peterson
Keyword(s):  
Cell Wall ◽  
Fine Structure ◽  
Wall Layer ◽  
Transfer Cells ◽  
Cellulose Microfibrils ◽  
Tracheary Elements ◽  
Large Vacuole ◽  
Wall Ingrowths ◽  
Cytological Changes ◽  
Thickened Wall

A number of cytological changes occur in rhizome transfer cells with age, the most striking being the appearance of microbodies each with a crystalline nucleoid and the presence of unusual plastids. Plastids in older transfer cells develop one or more electron-translucent regions and lack a defined thylakoid system. The number and size of vacuoles increases until ultimately one large vacuole is formed in old transfer cells. Accompanying these cytological changes in the cytoplasm the wall ingrowths change from being highly involuted and reaching a considerable distance into the cytoplasm of the cell to becoming thicker and less numerous, and finally form a rather uniformly thickened wall layer. The orientation of microfibrils in the thickened cell wall, resulting from the joining of the original wall projections adjacent to the tracheary elements, is random, while the wall thickenings away from the tracheary elements have more orderly arrangements of cellulose microfibrils.

scholarly journals The Placenta of Physcomitrium patens: Transfer Cell Wall Polymers Compared across the Three Bryophyte Groups

Diversity ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 378
Author(s):  
Jason S. Henry ◽  
Karen S. Renzaglia
Keyword(s):  
Cell Wall ◽  
Cell Walls ◽  
Cell Wall Composition ◽  
Transfer Cells ◽  
Primary Cell ◽  
Transfer Cell ◽  
Primary Cell Wall ◽  
Slight Variation ◽  
Wall Ingrowths ◽  
Cell Wall Polymers

Following similar studies of cell wall constituents in the placenta of Phaeoceros and Marchantia, we conducted immunogold labeling TEM studies of Physcomitrium patens to determine the composition of cell wall polymers in transfer cells on both sides of the placenta. Sixteen monoclonal antibodies were used to localize cell wall epitopes in the basal walls and wall ingrowths in this moss. In general, placental transfer cell walls of P. patens contained fewer pectins and far fewer arabinogalactan proteins AGPs than those of the hornwort and liverwort. P. patens also lacked the differential labeling that is pronounced between generations in the other bryophytes. In contrast, transfer cell walls on either side of the placenta of P. patens were relatively similar in composition, with slight variation in homogalacturonan HG pectins. Compositional similarities between wall ingrowths and primary cell walls in P. patens suggest that wall ingrowths may simply be extensions of the primary cell wall. Considerable variability in occurrence, abundance, and types of polymers among the three bryophytes and between the two generations suggested that similarity in function and morphology of cell walls does not require a common cell wall composition. We propose that the specific developmental and life history traits of these plants may provide even more important clues in understanding the basis for these differences. This study significantly builds on our knowledge of cell wall composition in bryophytes in general and in transfer cells across plants.

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