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Nitrogen accumulation induced by phosphorus deficiency in citrus plants
Year:
1973
Source of publication :
Scientia Horticulturae
Authors :
Achituv, Miriam
;
.
Bar-Akiva, Avigdor
;
.
Volume :
1
Co-Authors:
Achituv, M., The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Bar-Akiva, A., The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Facilitators :
From page:
251
To page:
262
(
Total pages:
12
)
Abstract:
Growth responses and nitrogen constituents were tested in young citrus trees grown on gradually decreasing amounts of phosphorus in greenhouse solution cultures. The phosphorus concentration in dry matter of minus-P leaves dropped to a third of that in control leaves and then remained steady throughout the experiment, while the total nitrogen concentration was low at the beginning and, rising gradually, reached an enormous amount. Nitrogen estimations in minus-P leaves showed the specific dynamics of the soluble nitrogen fraction: its content was low at the onset of the deficiency, and rose rapidly due to intensive accumulation of arginine in the tissues. Under conditions of acute phosphorus deficiency, arginine constituted more than 60% of the free amino acids and arginine nitrogen above 40% of the total, while in normal leaves arginine did not exceed 8% of the free amino acids, and about 1-% of the total. Similar patterns of increased nitrogen level due to arginine accumulation were found in leaves of phosphorus-deficient grapefruit and orange trees under field conditions. © 1973.
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More details
DOI :
10.1016/0304-4238(73)90037-X
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
26256
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:21
Scientific Publication
Nitrogen accumulation induced by phosphorus deficiency in citrus plants
1
Achituv, M., The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Bar-Akiva, A., The Volcani Center, Agricultural Research Organization, Bet Dagan, Israel
Nitrogen accumulation induced by phosphorus deficiency in citrus plants
Growth responses and nitrogen constituents were tested in young citrus trees grown on gradually decreasing amounts of phosphorus in greenhouse solution cultures. The phosphorus concentration in dry matter of minus-P leaves dropped to a third of that in control leaves and then remained steady throughout the experiment, while the total nitrogen concentration was low at the beginning and, rising gradually, reached an enormous amount. Nitrogen estimations in minus-P leaves showed the specific dynamics of the soluble nitrogen fraction: its content was low at the onset of the deficiency, and rose rapidly due to intensive accumulation of arginine in the tissues. Under conditions of acute phosphorus deficiency, arginine constituted more than 60% of the free amino acids and arginine nitrogen above 40% of the total, while in normal leaves arginine did not exceed 8% of the free amino acids, and about 1-% of the total. Similar patterns of increased nitrogen level due to arginine accumulation were found in leaves of phosphorus-deficient grapefruit and orange trees under field conditions. © 1973.
Scientific Publication
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