Developmental changes of enzymes involved in conversion of sucrose to hexose-phosphate during early tuberisation of potato

Planta ◽  
1997 ◽  
Vol 202 (2) ◽  
pp. 220-226 ◽  
Author(s):  
Niek J. G. Appeldoorn ◽  
Steef M. de Bruijn ◽  
Elly A. M. Koot-Gronsveld ◽  
Richard G. F. Visser ◽  
Dick Vreugdenhil ◽  
...  

1999 ◽  
Vol 22 (9) ◽  
pp. 1085-1096 ◽  
Author(s):  
N. J. G. Appeldoorn ◽  
S. M. De Bruijn ◽  
E. A. M. Koot‐Gronsveld ◽  
R. G. F. Visser ◽  
D. Vreugdenhil ◽  
...  


Author(s):  
George G. Cocks ◽  
Louis Leibovitz ◽  
DoSuk D. Lee

Our understanding of the structure and the formation of inorganic minerals in the bivalve shells has been considerably advanced by the use of electron microscope. However, very little is known about the ultrastructure of valves in the larval stage of the oysters. The present study examines the developmental changes which occur between the time of conception to the early stages of Dissoconch in the Crassostrea virginica(Gmelin), focusing on the initial deposition of inorganic crystals by the oysters.The spawning was induced by elevating the temperature of the seawater where the adult oysters were conditioned. The eggs and sperm were collected separately, then immediately mixed for the fertilizations to occur. Fertilized animals were kept in the incubator where various stages of development were stopped and observed. The detailed analysis of the early stages of growth showed that CaCO3 crystals(aragonite), with orthorhombic crystal structure, are deposited as early as gastrula stage(Figuresla-b). The next stage in development, the prodissoconch, revealed that the crystal orientation is in the form of spherulites.



1993 ◽  
Vol 89 (1) ◽  
pp. 71-76
Author(s):  
Lucia Merlo ◽  
Massimo Ferretti ◽  
Rossella Ghisi ◽  
Calvino Passera




2012 ◽  
Author(s):  
Roger Ratcliff ◽  
Clarissa A. Thompson ◽  
Gail McKoon


2013 ◽  
Author(s):  
Melissa E. Tamas ◽  
Robert D. Friedberg ◽  
Rosa M. Poggesi ◽  
Micaela Thordarson ◽  
Lisa C. Hoyman ◽  
...  




1991 ◽  
Author(s):  
Richard A. Hughes ◽  
Mark Bowes ◽  
Kenneth J. Sufka


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