Changes in cell wall structure of Pyrrosia piloselloides (L.) Price leaf cells during water stress

Pyrrosia piloselloides, a common epiphytic CAM fern, was subjected to water stress for 2 wk. Sample fronds from the well-watered (control) and water-stressed populations were fixed and examined with a scanning electron microscope. Scanning electron micrographs showed well-watered fronds with smooth...

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Bibliographic Details
Published in:International journal of plant sciences 1992-09, Vol.153 (3), p.329-332
Main Authors: Ong, B.L. (National University of Singapore, Singapore, Republic of Singapore), Koh, C.K.K, Wee, Y.C
Format: Article
Language:English
Subjects:
Anatomy & physiology
CELL STRUCTURE
CELL WALLS
Cellular biology
Crassulacean acid metabolism
Dehydration
DROUGHT STRESS
Epidermal cells
EPIFITOS
EPIPHYTE
EPIPHYTES
ESTRES DE SEQUIA
ESTRUCTURA CELULAR
Ferns
FEUILLE
HOJAS
Irrigation water
LEAVES
Mesophyll cells
PARED CELULAR
PAROI CELLULAIRE
Plant cells
Plant tissues
Plants
PTERIDOPHYTA
STRESS DU A LA SECHERESSE
Structure
STRUCTURE CELLULAIRE
TISSUE ULTRASTRUCTURE
Water supply
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Summary:Pyrrosia piloselloides, a common epiphytic CAM fern, was subjected to water stress for 2 wk. Sample fronds from the well-watered (control) and water-stressed populations were fixed and examined with a scanning electron microscope. Scanning electron micrographs showed well-watered fronds with smooth cell walls. In contrast, cell walls of water-stressed fronds were folded in a regular, wavelike pattern. The degree of folding increased with the severity of water stress. The folding of the cell wall may be a survival mechanism by which the fern maintains cellular structural integrity, so that when water again becomes available, cells can resume normal metabolism immediately.
ISSN:1058-5893
1537-5315
DOI:10.1086/297036