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פותח על ידי קלירמאש פתרונות בע"מ -
The contribution of host and pathogen to ethylene biosynthesis in Penicillium digitatum-infected citrus fruit
Year:
1985
Source of publication :
Physiological Plant Pathology
Authors :
אחילאה, עודד
;
.
חלוץ, עדו
;
.
פוקס, יורם
;
.
רוט, אילונה
;
.
Volume :
27
Co-Authors:
Achilea, O., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Fuchs, Y., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Chalutz, E., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Rot, I., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Facilitators :
From page:
55
To page:
63
(
Total pages:
9
)
Abstract:
The biosynthesis of ethylene by grapefruit (Citrus paradisi Macf) cv. "Marsh Seedless" 6 days after inoculation with either an ethylene producing or a non-ethylene-producing isolate of Penicillium digitatum, was studied. Relatively low levels of ethylene were produced by the apparently healthy region, at the edge of rot in fruits infected with either the ethylene producing or the nonethylene-producing isolate of the fungus. Higher levels of production were found in regions of the peel showing infection symptoms, but only in fruit infected with the ethylene-producing isolate. The production of symptoms and the ACC content of the peel of fruits inoculated with the ethylene-producing isolate was similar to that in fruits inoculated with the non-producing isolate. The use of radiolabelled precursors showed that the ethylene produced by the healthy parts of the fruit originated from methionine, while the ethylene produced by the infected parts of the fruit originated mostly from glutamic acid. Furthermore, ethylene production by the healthy part of the fruit was markedly enhanced by 1-aminocyclopropane-1-carboxylic acid (ACC), and to a lesser extent by CuSO4, but it was inhibited by aminoethoxyvinylglycine (AVG). In contrast the production of ethylene by infected peel and by P. digitatum in culture was not affected by ACC, but was markedly inhibited by CuSO4, and, to a lesser extent, by AVG. These results suggest that ethylene production in the healthy part of the fruit is of plant origin, whereas the markedly enhanced production of ethylene by the P. digitatum-infected regions, is mostly or entirely offungal origin. © 1985.
Note:
Related Files :
biosynthesis
Citrus
ethylene
Penicillium
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/0048-4059(85)90056-6
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
22588
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:53
Scientific Publication
The contribution of host and pathogen to ethylene biosynthesis in Penicillium digitatum-infected citrus fruit
27
Achilea, O., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Fuchs, Y., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Chalutz, E., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
Rot, I., Department of Fruit and Vegetable Storage, Agricultural Research Organization, The Volcani Center, Bet Dagan, 50250, Israel
The contribution of host and pathogen to ethylene biosynthesis in Penicillium digitatum-infected citrus fruit
The biosynthesis of ethylene by grapefruit (Citrus paradisi Macf) cv. "Marsh Seedless" 6 days after inoculation with either an ethylene producing or a non-ethylene-producing isolate of Penicillium digitatum, was studied. Relatively low levels of ethylene were produced by the apparently healthy region, at the edge of rot in fruits infected with either the ethylene producing or the nonethylene-producing isolate of the fungus. Higher levels of production were found in regions of the peel showing infection symptoms, but only in fruit infected with the ethylene-producing isolate. The production of symptoms and the ACC content of the peel of fruits inoculated with the ethylene-producing isolate was similar to that in fruits inoculated with the non-producing isolate. The use of radiolabelled precursors showed that the ethylene produced by the healthy parts of the fruit originated from methionine, while the ethylene produced by the infected parts of the fruit originated mostly from glutamic acid. Furthermore, ethylene production by the healthy part of the fruit was markedly enhanced by 1-aminocyclopropane-1-carboxylic acid (ACC), and to a lesser extent by CuSO4, but it was inhibited by aminoethoxyvinylglycine (AVG). In contrast the production of ethylene by infected peel and by P. digitatum in culture was not affected by ACC, but was markedly inhibited by CuSO4, and, to a lesser extent, by AVG. These results suggest that ethylene production in the healthy part of the fruit is of plant origin, whereas the markedly enhanced production of ethylene by the P. digitatum-infected regions, is mostly or entirely offungal origin. © 1985.
Scientific Publication
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