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אסיף מאגר המחקר החקלאי
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Sclerification of juice sacs in pummelo (Citrus grandis) fruit
Year:
1989
Source of publication :
Canadian Journal of Botany
Authors :
Berman, Monika
;
.
Chalutz, Edo
;
.
Lomaniec, Ella
;
.
Shomer, Ilan
;
.
Vasiliver, Rosa
;
.
Volume :
67
Co-Authors:
Facilitators :
From page:
625
To page:
632
(
Total pages:
8
)
Abstract:

Granulation of juice sacs in pummelo (Citrus grandis L.) fruit was found to occur upon ripening. The juice sac tissue consisted of epidermal and subepidermal cell layers, an elongated cell layer, and juice cells. The granulation was accompanied by the appearance of opaque white regions inside transparent tissue. The subepidermal cells of the granulated tissue were disordered and the cell walls of the elongated and the juice cells were distinctly thickened. An ultrastructural study has shown that the subepidermal cell walls of granulated juice sacs were distorted and had swollen regions. The cell walls of both the elongated and the juice cells had secondary thickening with pits. The total dry weight, cellulose (as glucose), lignin, and hemicellulose (as xylose) were significantly higher and insoluble proteins were lower in granulated juice sacs than in non-granulated ones. The content of insoluble neutral sugars such as rhamnose, arabinose, mannose, and galactose decreased as a result of granulation, as did that of soluble sugars glucose, fructose, sucrose, and organic acids. Thus, it seems that granulation of pummelo fruit juice sacs is a result of lignification of the juice cells, which leads to the formation of sclerenchyma.

Note:
Related Files :
Granulation
juice sac cells
Pummelos
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More details
DOI :
https://doi.org/10.1139/b89-084
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
56042
Last updated date:
02/03/2022 17:27
Creation date:
23/08/2021 12:43
Scientific Publication
Sclerification of juice sacs in pummelo (Citrus grandis) fruit
67
Scierification of juice sacs in pummelo (Citrus grandis) fruit

Granulation of juice sacs in pummelo (Citrus grandis L.) fruit was found to occur upon ripening. The juice sac tissue consisted of epidermal and subepidermal cell layers, an elongated cell layer, and juice cells. The granulation was accompanied by the appearance of opaque white regions inside transparent tissue. The subepidermal cells of the granulated tissue were disordered and the cell walls of the elongated and the juice cells were distinctly thickened. An ultrastructural study has shown that the subepidermal cell walls of granulated juice sacs were distorted and had swollen regions. The cell walls of both the elongated and the juice cells had secondary thickening with pits. The total dry weight, cellulose (as glucose), lignin, and hemicellulose (as xylose) were significantly higher and insoluble proteins were lower in granulated juice sacs than in non-granulated ones. The content of insoluble neutral sugars such as rhamnose, arabinose, mannose, and galactose decreased as a result of granulation, as did that of soluble sugars glucose, fructose, sucrose, and organic acids. Thus, it seems that granulation of pummelo fruit juice sacs is a result of lignification of the juice cells, which leads to the formation of sclerenchyma.

Scientific Publication
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