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אסיף מאגר המחקר החקלאי
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Enzymatic methods for detection of mineral element deficiencies in citrus leaves: A mini-review
Year:
1999
Source of publication :
Journal of Plant Nutrition
Authors :
Lavon, Ruth
;
.
Volume :
22
Co-Authors:
Lavon, R., Department of Citriculture, Institute of Horticulture, Volcani Center, P.O.Box 6, Bet-Dagan, 50250, Israel
Goldschmidt, E.E., Kennedy-Leigh Ctr. for Hort. Res., Faculty of Agricultural, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Facilitators :
From page:
139
To page:
150
(
Total pages:
12
)
Abstract:
The identification of mineral element deficiencies by enzymatic methods was introduced by the late A. Bar-Akiva with citrus leaves. The level of specific enzyme activities was found to provide a rapid and sensitive indicator for deficiencies of the micronutrients iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), and molybdenum (Mo) as well as the macronutrients nitrogen (N) and phosphorus (P). Infiltration of the missing element into deficient leaf material reactivated the respective enzyme. The extent of reactivation of the enzyme was negatively correlated with the level of the element in the deficient leaves. The enzyme indicator concept has recently been extended to the characterization of potassium (K), magnesium (Mg), and calcium (Ca) deficiencies. Pyruvate kinase activity was found to reflect the K, Mg, and Ca balance. Amylase activity was inversely correlated with citrus leaf K levels. The level of RuBP carboxylase was reduced under Ca deficiency conditions. The significance of enzymatic methods for study of citrus mineral element nutrition is discussed.
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DOI :
Article number:
Affiliations:
Database:
Scopus
Publication Type:
Short survey / mini-review
;
.
Language:
English
Editors' remarks:
ID:
29939
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:50
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Scientific Publication
Enzymatic methods for detection of mineral element deficiencies in citrus leaves: A mini-review
22
Lavon, R., Department of Citriculture, Institute of Horticulture, Volcani Center, P.O.Box 6, Bet-Dagan, 50250, Israel
Goldschmidt, E.E., Kennedy-Leigh Ctr. for Hort. Res., Faculty of Agricultural, Hebrew University of Jerusalem, P.O. Box 12, Rehovot 76100, Israel
Enzymatic methods for detection of mineral element deficiencies in citrus leaves: A mini-review
The identification of mineral element deficiencies by enzymatic methods was introduced by the late A. Bar-Akiva with citrus leaves. The level of specific enzyme activities was found to provide a rapid and sensitive indicator for deficiencies of the micronutrients iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), and molybdenum (Mo) as well as the macronutrients nitrogen (N) and phosphorus (P). Infiltration of the missing element into deficient leaf material reactivated the respective enzyme. The extent of reactivation of the enzyme was negatively correlated with the level of the element in the deficient leaves. The enzyme indicator concept has recently been extended to the characterization of potassium (K), magnesium (Mg), and calcium (Ca) deficiencies. Pyruvate kinase activity was found to reflect the K, Mg, and Ca balance. Amylase activity was inversely correlated with citrus leaf K levels. The level of RuBP carboxylase was reduced under Ca deficiency conditions. The significance of enzymatic methods for study of citrus mineral element nutrition is discussed.
Scientific Publication
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