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Ultrastructural Changes in the Cell Walls of Ripening Apple and Pear Fruit
Year:
1979
Source of publication :
Plant physiology (source)
Authors :
Ben-Arie, Ruth
;
.
Kislev, Naomi
;
.
Volume :
64
Co-Authors:

Chaim Frenkel

Facilitators :
From page:
197
To page:
202
(
Total pages:
6
)
Abstract:

Ultrastructural changes in the cell walls of “Calville de San Sauveur” apples (Malus sylvestris Mill) and “Spadona” pear (Pyrus communis L.) fruit were followed during ripening. In apple, structural alterations in cell walls became apparent at advanced stages of softening and showed predominantly dissolution of the middle lamella. In pears softening was also associated with the dissolution of the middle lamella, and in addition a gradual disintegration of fibrillar material throughout the cell wall. In fully ripe fruit almost all of the fibrillar arrangement in the cell wall was lost. Application of enzyme solutions containing polygalacturonase and cellulase to tissue discs from firm pear fruit led to ultrastructural changes observed in naturally ripening pears. In apple polygalacturonase alone was sufficient to dissolve the middle lamella region of the cell walls, as was also found to occur in naturally ripening fruit. In both apple and pear the cell wall areas containing plasmodesmata maintained their structural integrity throughout the ripening process. At advanced stages of ripening vesicles appeared in the vicinity of plasmodesmata.

Note:
Related Files :
Apple
cell wall
Malus sylvestris
pear
plant physiology
Pyrus communis
ripening
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More details
DOI :
https://doi.org/10.1104/pp.64.2.197
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
54619
Last updated date:
02/03/2022 17:27
Creation date:
21/04/2021 12:23
Scientific Publication
Ultrastructural Changes in the Cell Walls of Ripening Apple and Pear Fruit
64

Chaim Frenkel

Ultrastructural Changes in the Cell Walls of Ripening Apple and Pear Fruit

Ultrastructural changes in the cell walls of “Calville de San Sauveur” apples (Malus sylvestris Mill) and “Spadona” pear (Pyrus communis L.) fruit were followed during ripening. In apple, structural alterations in cell walls became apparent at advanced stages of softening and showed predominantly dissolution of the middle lamella. In pears softening was also associated with the dissolution of the middle lamella, and in addition a gradual disintegration of fibrillar material throughout the cell wall. In fully ripe fruit almost all of the fibrillar arrangement in the cell wall was lost. Application of enzyme solutions containing polygalacturonase and cellulase to tissue discs from firm pear fruit led to ultrastructural changes observed in naturally ripening pears. In apple polygalacturonase alone was sufficient to dissolve the middle lamella region of the cell walls, as was also found to occur in naturally ripening fruit. In both apple and pear the cell wall areas containing plasmodesmata maintained their structural integrity throughout the ripening process. At advanced stages of ripening vesicles appeared in the vicinity of plasmodesmata.

Scientific Publication
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