scholarly journals The Differential Expression of Sucrose Synthase in Relation to Diverse Patterns of Carbon Partitioning in Developing Cotton Seed

1997 ◽  
Vol 115 (2) ◽  
pp. 375-385 ◽  
Author(s):  
Y. L. Ruan ◽  
P. S. Chourey ◽  
D. P. Delmer ◽  
L. Perez-Grau
Keyword(s):  
Differential Expression ◽  
Cotton Seed ◽  
Sucrose Synthase ◽  
Carbon Partitioning

Sugar Levels Modulate Differential Expression of Maize Sucrose Synthase Genes

1992 ◽  
Vol 4 (1) ◽  
pp. 59 ◽  
Author(s):  
Karen E. Koch ◽  
Kurt D. Nolte ◽  
Edwin R. Duke ◽  
Donald R. McCarty ◽  
Wayne T. Avigne
Keyword(s):  
Differential Expression ◽  
Sucrose Synthase ◽  
Sugar Levels

scholarly journals Sugar Levels Modulate Differential Expression of Maize Sucrose Synthase Genes.

1992 ◽  
pp. 59-69 ◽  
Author(s):  
K. E. Koch ◽  
K. D. Nolte ◽  
E. R. Duke ◽  
D. R. McCarty ◽  
W. T. Avigne
Keyword(s):  
Differential Expression ◽  
Sucrose Synthase ◽  
Sugar Levels

scholarly journals The Importance of the Enzyme Sucrose Synthase for Cell Wall Synthesis in Plants

1994 ◽  
Author(s):  
Deborah P. Delmer ◽  
Prem S. Chourey
Keyword(s):  
Cell Wall ◽  
Plasma Membrane ◽  
Cotton Seed ◽  
Sucrose Synthase ◽  
Starch Synthesis ◽  
Endosperm Development ◽  
Current Evidence ◽  
Cell Wall Synthesis ◽  
Maize Endosperm ◽  
Callose Deposition

The goal of this work was to understand the role of the enzyme sucrose synthase (SuSy) in synthesis of cellulose and callose in plants. The work resulting from the this grant leads to a number of conclusions. SuSy clearly plays diverse roles in carbon metabolism. It can associate with the plasma membrane of cells undergoing rapid cellulose deposition, such as cotton fibers, developing maize endosperm, gravistimulated pulvini, and transfer cells of the cotton seed. It is also concentrated at sites of high callose deposition (tapetal cells; cell plates). When SuSy levels are lowered by mutation or by anti-sense technology, cell walls undergo degeneration (maize endosperm) and show reduced levels of cellulose (potato tubers). In sum, our evidence has very much strengthened the concept that SuSy does function in the plasma membrane to channel carbon from sucrose via UDP-glucose to glucan synthase complexes. Soluble SuSy also clearly plays a role in providing carbon for starch synthesis and respiration. Surprisingly, we found that the cotton seed is one unique case where SuSy apparently does not play a role in starch synthesis. Current evidence in sum suggests that no specific SuSy gene encodes the membrane-associated form, although in maize the SS 1 form of SuSy may be most important for cell wall synthesis in the early stages of endosperm development. Work is still in progress to determine what does control membrane localization - and the current evidence we have favors a role for Ca2+, and possibly also protein phosphorylation by differentially regulated protein kinases. Finally, we have discovered for the first time, a major new family of genes that encode the catalytic subunit of the cellulose synthase of plants - a result that has been widely cited and opens many new approaches for the study of this important plant function.

A metabolic flux analysis to study the role of sucrose synthase in the regulation of the carbon partitioning in central metabolism in maize root tips

2007 ◽  
Vol 9 (5-6) ◽  
pp. 419-432 ◽  
Author(s):  
Ana Paula Alonso ◽  
Philippe Raymond ◽  
Michel Hernould ◽  
Corinne Rondeau-Mouro ◽  
Albert de Graaf ◽  
...  
Keyword(s):  
Metabolic Flux Analysis ◽  
Sucrose Synthase ◽  
Metabolic Flux ◽  
Carbon Partitioning ◽  
Maize Root ◽  
Flux Analysis ◽  
Central Metabolism ◽  
Root Tips
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