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פותח על ידי קלירמאש פתרונות בע"מ -
Genetic Engineering of Amino Acid Metabolism in Plants
Year:
2008
Authors :
גלילי, שמואל
;
.
Volume :
1
Co-Authors:
Galili, S., Institute of Field and Garden Crops, Agricultural Research Organization, Bet Dagan, 50250, Israel
Amir, R., Plant Science Laboratory, Migal Galilee Technological Center, Rosh Pina, 12100, Israel
Galili, G., Department of Plant Sciences, The Weizmann Institute of Science, Rehovot, 76100, Israel
Facilitators :
From page:
49
To page:
80
(
Total pages:
32
)
Abstract:
Amino acids are not only building blocks of proteins but also participate in many metabolic networks that control growth and adaptation to the environment. In young plants, amino acid biosynthesis is regulated by a compound metabolic network that links nitrogen assimilation with carbon metabolism. This network is strongly regulated by the metabolism of four central amino acids, namely glutamine, glutamate, aspartate, and asparagine (Gln, Glu, Asp, and Asn), which are then converted into all other amino acids by various biochemical processes. Amino acids also serve as major transport molecules of nitrogen between source and sink tissues, including transport of nitrogen from vegetative to reproductive tissues. Amino acid metabolism is subject to a concerted regulation by physiological, developmental, and hormonal signals. This regulation also appears to be different between source and sink tissues. The importance of amino acids in plants does not only stem from being central regulators of plant growth and responses to environmental signals, but amino acids are also effectors of the nutritional quality of human foods and animal feeds. Since mammals cannot synthesize about half of the 20-amino acid building blocks of proteins, they rely on obtaining them from foods and feeds. Yet, the major crop plants contain limited amounts of some of these so-called "essential amino acids," which decreases nutritional value. Recent genetic engineering and more recently genomic approaches have significantly boosted our understanding of the regulation of amino acid metabolism in plants and their participation in growth, stress response, and reproduction. In addition, genetic engineering approaches have improved the content of essential amino acids in plants, particularly the contents of lysine and methionine, which are often most limiting. © 2007 Elsevier Inc. All rights reserved.
Note:
Related Files :
Amino Acids
biosynthesis
genetic engineering
light
metabolism
seeds
stress
transgenic plants
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/S1755-0408(07)01003-X
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
סקירה
;
.
Language:
אנגלית
Editors' remarks:
ID:
19452
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:29
You may also be interested in
Scientific Publication
Genetic Engineering of Amino Acid Metabolism in Plants
1
Galili, S., Institute of Field and Garden Crops, Agricultural Research Organization, Bet Dagan, 50250, Israel
Amir, R., Plant Science Laboratory, Migal Galilee Technological Center, Rosh Pina, 12100, Israel
Galili, G., Department of Plant Sciences, The Weizmann Institute of Science, Rehovot, 76100, Israel
Genetic Engineering of Amino Acid Metabolism in Plants
Amino acids are not only building blocks of proteins but also participate in many metabolic networks that control growth and adaptation to the environment. In young plants, amino acid biosynthesis is regulated by a compound metabolic network that links nitrogen assimilation with carbon metabolism. This network is strongly regulated by the metabolism of four central amino acids, namely glutamine, glutamate, aspartate, and asparagine (Gln, Glu, Asp, and Asn), which are then converted into all other amino acids by various biochemical processes. Amino acids also serve as major transport molecules of nitrogen between source and sink tissues, including transport of nitrogen from vegetative to reproductive tissues. Amino acid metabolism is subject to a concerted regulation by physiological, developmental, and hormonal signals. This regulation also appears to be different between source and sink tissues. The importance of amino acids in plants does not only stem from being central regulators of plant growth and responses to environmental signals, but amino acids are also effectors of the nutritional quality of human foods and animal feeds. Since mammals cannot synthesize about half of the 20-amino acid building blocks of proteins, they rely on obtaining them from foods and feeds. Yet, the major crop plants contain limited amounts of some of these so-called "essential amino acids," which decreases nutritional value. Recent genetic engineering and more recently genomic approaches have significantly boosted our understanding of the regulation of amino acid metabolism in plants and their participation in growth, stress response, and reproduction. In addition, genetic engineering approaches have improved the content of essential amino acids in plants, particularly the contents of lysine and methionine, which are often most limiting. © 2007 Elsevier Inc. All rights reserved.
Scientific Publication
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