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EFFECTS OF SALINITY, N-NUTRITION AND HUMIDITY ON PHOTOSYNTHESIS AND PROTEIN METABOLISM OF CHLORIS GAYANA KUNTH
Year:
1979
Source of publication :
Plant and Soil
Authors :
Kipnis, Tal
;
.
Volume :
53
Co-Authors:

ADIVA SHOMER-ILAN, Y. B. SAMISH, D. ELMER and Y. WAISEL

Facilitators :
From page:
477
To page:
486
(
Total pages:
10
)
Abstract:

Under high atmospheric humidity, Rhodes grass plants responded favourably to an increase in nitrate fertilization. Under low atmospheric humidity an optimum point was reached at lower N-treatment. Plants' growth was improved by a salinity treatment of up to 100mM, at high atmospheric humidity. A higher salt concentration cancelled the favourable effect of added nitrate. The rise in yield which follows salt or nitrate treatments is apparently combined with an increase in activity of the key photosynthetic enzymes, Phosphoenol pyruvate carboxylase and Ribulose biphosphate carboxylase. A similar rise in activity is seen in nitrate reductase, a key enzyme in nitrogen metabolism. Evidently, all three enzymatic systems are not damaged in high salt treatments, and the potential photosynthetic capacity remained practically uneffected in all treatments. As no correlation could be found between transpiration and growth curves, it is assumed that the supply of CO₂ is also unhampered. Thus, the major negative effect of salinity, seems to be on protein synthesis, which eventually leads to disturbed growth.

Note:
Related Files :
Chloris gayana
fertilizer application
humidity
metabolism
nitrate
photosynthesis
plant nutrition
proteins
salinity
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More details
DOI :
Article number:
0
Affiliations:
Database:
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
56183
Last updated date:
02/03/2022 17:27
Creation date:
30/08/2021 14:25
You may also be interested in
Scientific Publication
EFFECTS OF SALINITY, N-NUTRITION AND HUMIDITY ON PHOTOSYNTHESIS AND PROTEIN METABOLISM OF CHLORIS GAYANA KUNTH
53

ADIVA SHOMER-ILAN, Y. B. SAMISH, D. ELMER and Y. WAISEL

EFFECTS OF SALINITY, N-NUTRITION AND HUMIDITY ON PHOTOSYNTHESIS AND PROTEIN METABOLISM OF CHLORIS GAYANA KUNTH

Under high atmospheric humidity, Rhodes grass plants responded favourably to an increase in nitrate fertilization. Under low atmospheric humidity an optimum point was reached at lower N-treatment. Plants' growth was improved by a salinity treatment of up to 100mM, at high atmospheric humidity. A higher salt concentration cancelled the favourable effect of added nitrate. The rise in yield which follows salt or nitrate treatments is apparently combined with an increase in activity of the key photosynthetic enzymes, Phosphoenol pyruvate carboxylase and Ribulose biphosphate carboxylase. A similar rise in activity is seen in nitrate reductase, a key enzyme in nitrogen metabolism. Evidently, all three enzymatic systems are not damaged in high salt treatments, and the potential photosynthetic capacity remained practically uneffected in all treatments. As no correlation could be found between transpiration and growth curves, it is assumed that the supply of CO₂ is also unhampered. Thus, the major negative effect of salinity, seems to be on protein synthesis, which eventually leads to disturbed growth.

Scientific Publication
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