scholarly journals The chemical composition of the egg shells of the potato cyst-nematode, Heterodera rostochiensis Woll

1967 ◽  
Vol 104 (3) ◽  
pp. 1056-1060 ◽  
Author(s):  
AJ Clarke ◽  
PM Cox ◽  
AM Shepherd
Keyword(s):  
Chemical Composition ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Egg Shells ◽  
Heterodera Rostochiensis

scholarly journals The chemical composition of the cyst wall of the potato cyst-nematode, Heterodera rostochiensis

1968 ◽  
Vol 108 (2) ◽  
pp. 221-224 ◽  
Author(s):  
A. J. Clarke
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Chemical Composition ◽  
Cyst Wall ◽  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Larval Cuticle ◽  
Inorganic Matter ◽  
Heterodera Rostochiensis ◽  
Total Amino Acids

1. Cyst walls of the potato cyst-nematode (Heterodera rostochiensis Woll.) were isolated by sieving a suspension of crushed cysts. About 12mg. of dried cyst walls was obtained from 1000 cysts. 2. The cyst walls contained mainly protein (72%, calculated from nitrogen content). On acid hydrolysis about 77% of the cyst wall went into solution. Of 19 amino acids present, proline, glycine, and alanine were the most abundant, and made up about 50% by weight of the total amino acids. The amino acid composition suggested that collagen-like proteins predominated in the cyst wall and larval cuticle. 3. A small amount of glucosamine (1·5%) was present in the hydrolysates, but chitin was not detected in the cyst walls. 4. Other components of the cyst walls were lipid (2%), carbohydrate (0·5%) and a small amount of inorganic matter (ash, 5%). Polyphenols (2% by wt. of the cyst walls) occurred in the acid hydrolysates. The dark pigments of the cyst wall were not indole-containing melanins.

Incorporating granular nematicides in soil to control potato cyst-nematode, Heterodera rostochiensis

1975 ◽  
Vol 80 (1) ◽  
pp. 85-92 ◽  
Author(s):  
A. G. WHITEHEAD ◽  
D. J. TITE ◽  
JANET E. FRASER ◽  
EILEEN M. FRENCH ◽  
J. SMITH
Keyword(s):  
Cyst Nematode ◽  
Potato Cyst Nematode ◽  
Heterodera Rostochiensis
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