Aspects of Vascular Anatomy and Differentiation of Vascular Tissues and Transfer Cells in Vegetative Nodes of Wheat

1979 ◽  
Vol 27 (6) ◽  
pp. 703 ◽  
Author(s):  
CH Busby ◽  
TP O'Brien
Keyword(s):  
Shoot Apex ◽  
Vascular Anatomy ◽  
Transfer Cells ◽  
Mature Leaf ◽  
Tracheary Elements ◽  
Vascular Tissues ◽  
Wall Ingrowth ◽  
Mature Node

Xylem transfer cells are strongly developed in the departing leaf traces of the mature wheat node. Their differentiation is initiated soon after the appearance of the first tracheary elements in these bundles. and wall ingrowth development reaches its peak just as the leaf to which the bundle belongs becomes fully expanded. It is suggested that the xylem transfer cells play an important role in redirecting solutes travelling in the xylem of the mature leaf to the developing leaves at the shoot apex. It is further suggested that they form an integral part of the normal xylem transpiration pathway, compensating for xylem restrictions and discontinuities in the mature node. Phloem transfer cells also appear very early in the differentiation of the nodal vasculature, although their function remains obscure.

On the vascular anatomy and stomates of the lodicules of Zea mays

1980 ◽  
Vol 58 (9) ◽  
pp. 1045-1055 ◽  
Author(s):  
Thompson Demetrio Pizzolato
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Vascular Anatomy ◽  
Transfer Cells ◽  
Tracheary Elements ◽  
Cell Type ◽  
Xylem Parenchyma ◽  
Abaxial Epidermis ◽  
Companion Cells ◽  
Sieve Tubes

The four lodicules of the male spikelet of Zea mays L. are supplied by one, two, or three traces. In the lower regions of the traces intermediary cells and a few phloem transfer cells occur with the companion cells and sieve tubes. Xylem transfer cells with a variety of wall thickenings intermingle in the lower regions of the traces with tracheary elements. Tracheary elements and sieve tubes in this region do not touch but are separated by the phloem and xylem parenchyma. As the lodicule trace nears the base of the lodicule, intermediary cells and transfer cells diminish. A bundle sheath surrounds the lodicule trace but does not surround the minor veins of the lodicule proper. Within the lodicule proper the trace branches prolifically, and the minor veins become peripherally placed. Most of the minor veins contain vessels and sieve tubes but a few contain sieve tubes alone. Companion cells occur in some veins but not in others. Vessels and sieve tubes frequently touch each other. Many minor veins end simultaneously in sieve elements and tracheary elements but some end in one or the other cell type. Parenchyma cells with wrinkled walls occur near the minor veins. The abaxial epidermis of the upper regions of the lodicule contains stomates.

scholarly journals Unraveling the puzzle of phloem parenchyma transfer cell wall ingrowth

2020 ◽  
Vol 71 (16) ◽  
pp. 4617-4620 ◽  
Author(s):  
Tyler J McCubbin ◽  
David M Braun
Keyword(s):  
Cell Wall ◽  
Phloem Loading ◽  
Transfer Cells ◽  
Transfer Cell ◽  
Phloem Parenchyma ◽  
Wall Ingrowth ◽  
Experimental Botany

This article comments on: Wei X, Nguyen ST, Collings DA, McCurdy DW. 2020. Sucrose regulates wall ingrowth deposition in phloem parenchyma transfer cells in Arabidopsis via affecting phloem loading activity. Journal of Experimental Botany 71, 4690–4702.

scholarly journals GIGANTEA is a component of a regulatory pathway determining wall ingrowth deposition in phloem parenchyma transfer cells of Arabidopsis thaliana

2010 ◽  
Vol 63 (4) ◽  
pp. 651-661 ◽  
Author(s):  
Joshua Edwards ◽  
Antony P. Martin ◽  
Felicity Andriunas ◽  
Christina E. Offler ◽  
John W. Patrick ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Transfer Cells ◽  
Regulatory Pathway ◽  
Phloem Parenchyma ◽  
Wall Ingrowth

Wall ingrowth architecture in epidermal transfer cells ofVicia faba cotyledons

PROTOPLASMA ◽  
2001 ◽  
Vol 215 (1-4) ◽  
pp. 191-203 ◽  
Author(s):  
Mark J. Talbot ◽  
Vincent R. Franceschi ◽  
David W. McCurdy ◽  
Christina E. Offler
Keyword(s):  
Transfer Cells ◽  
Wall Ingrowth ◽  
Ofvicia Faba

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

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 A Ca2+-dependent remodelled actin network directs vesicle trafficking to build wall ingrowth papillae in transfer cells

2017 ◽  
Vol 68 (17) ◽  
pp. 4749-4764 ◽  
Author(s):  
Hui-Ming Zhang ◽  
Kim Colyvas ◽  
John W Patrick ◽  
Christina E Offler
Keyword(s):  
Vesicle Trafficking ◽  
Transfer Cells ◽  
Actin Network ◽  
Wall Ingrowth
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