NDLI: Wall ingrowth architecture in epidermal transfer cells ofVicia faba cotyledons

Content Provider	Springer Nature Link
Author	Talbot, Mark J. Franceschi, Vincent R. McCurdy, David W. Offler, Christina E.
Copyright Year	2001
Abstract	We describe the use of scanning electron microscopy to provide novel views of the three-dimensional morphology of the ingrowth wall in epidermal transfer cells of cotyledons of developingVicia faba seed. Wall ingrowth deposition in these cells amplifies the surface area of plasma membrane available for transport of solutes during cotyledon development. Despite the physiological importance of such amplification, little is known about wall ingrowth morphology and deposition in transfer cells. A detailed morphological analysis of wall deposition in this study clearly established for the first time that wall ingrowths are deposited at scattered, discrete loci as papillate ingrowth projections. The new views of the ingrowth wall revealed that these projections branch and fuse laterally, and fusion occurs by fine connections to form a fenestrated sheet or layer. This sheet of wall material then provides a base for further deposition of ingrowth projections to progressively build many interconnected, fenestrated layers. Consolidation, or filling-in, of the fenestrae in these layers appears to occur from small fingerlike protrusions of wall material which extend laterally from the most recently deposited surface of the fenestrae. We propose that deposition of fenestrated layers may provide a mechanism for maintaining continuous amplification of plasma membrane surface area in the face of turnover of the plasma membrane and transporter proteins associated with it. The techniques reported in this paper will provide new opportunities to investigate wall ingrowth deposition and its regulation in transfer cells.
Starting Page	191
Ending Page	203
Page Count	13
File Format	PDF
ISSN	0033183X
Journal	Protoplasma
Volume Number	215
Issue Number	1-4
e-ISSN	16156102
Language	English
Publisher	Springer-Verlag
Publisher Date	2001-01-01
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Transfer cell Wall ingrowth Vicia faba Cotyledon Scanning electron microscopy Cell Biology Plant Sciences Zoology
Content Type	Text
Resource Type	Article
Subject	Cell Biology Plant Science Medicine

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