International Journal of Tropical Insect Science

, Volume 13, Issue 5, pp 737–740 | Cite as

Electrophoretic Study of Glutamate Dehydrogenase and Other Enzymes of Nephotettix Virescens (Homoptera: Cicadellidae) Populations from India, Sri Lanka and the Philippines

  • G. F. Rajendram
Research Article


Polyacrylamide gel electrophoresis was carried out on Nephotettix virescens (Distant) adults collected from India, Sri Lanka and the Philippines, and maintained in glass-houses on rice variety TN-1 at the University of Wales, Cardiff, United Kingdom. The following enzymes showed activity and were recorded: acid phosphatase (ACP), a-glycerophosphate dehydrogenase (aGPD), fumarase (FUM), glucose-6-phosphate dehydrogenase (G-6-PDH), glutamate dehydrogenase (GLUD), glutamate oxalo-acetate transaminase (GOT), hexokinase (HK), lactate dehydrogenase (LDH), malic enzyme (ME) and xanthine dehydrogenase (XDH).

The bands in nine enzymes were homologous across the three populations and showed no differences.The relative mobility of the enzyme GLUD in the Philippines population was lower than in the other two populations and could be used for diagnostic separation.

The results confirm previous reports of differences in the relative mobility of esterase bands of the Philippines population of N. virescens from India and Sri Lanka populations on starch gel.

Key Words

Nephotettix virescens Homoptera Cicadellidae polyacrylamide electrophoresis enzyme variation 


L’electrophorese surgel polyacrylamide aété fait sur Nephotettix virescens (Distant) adultes rassemblés de l’lnde, Sri Lanka et de Philippines, et conservés dans les maison de vitrée sur riz variété TN-1 à l’Université de Wales, Cardiff, Royaume Uni. Les enzymes suivantes avaient montré activité et ont été enregistrés: l’acide phosphatase (ACP), la dehydrogenase de phosphate de alpha-glycerol (GPD), la fumarase (FUM), la dehydrogenase de phosphate de glucose (G-6-PDH), la dehydrogenase de glutamate (GLUD), l’oxalo-acetatetransminasedeglutamate(GOT), la hexokinase (HK), la dehydrogenase de lactate (LDH), 1’enzyme de I’acide malique (ME) et la dehydrogenase de xanthine (XDH).

Les bandes dans neuf enzymes étaient homologues dans toutes les trois populations et montrent aucune différence. Mais la mobilité relative de l’enzyme GLUD de la population Philippines était plus base que les deux autres populations et peut être employée pour la séparation diagnostique.

Les resultats confirment rapports anterieurs dans la mobilité relative de bandes de esterase de la population Philippines de N. virescens en comparant avec des populations de l’Inde et de Sri Lanka sur empois gel electrephorese.


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Copyright information

© ICIPE 1992

Authors and Affiliations

  • G. F. Rajendram
    • 1
    • 2
  1. 1.School of Pure & Applied BiologyUniversity of WalesCardiffUK
  2. 2.Colombo 4Sri Lanka

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