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Comparison of wild type and genetically engineered nuclear polyhedrosis viruses of Autographa californica for mortality, virus replication and polyhedra production in Trichoplusia ni larvae by Yasuhisa Kunimi; James R. Fuxa; Bruce D. Hammock is a Agricultural and Biological Sciences article available to read on EtoBox.

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Virus replication and polyhedra production of two polyhedron-positive recombinant nuclear polyhedrosis viruses of Autographa californica, AcJHE.KK and AcAaIT which encode juvenile hormone esterase and scorpion toxin, respectively, were compared with those of a plaque purified wild-type nuclear polyhedrosis virus, AcMNPV-C6, in Trichoplusia ni larvae. Though average times required to kill the T. ni larvae increased with the age of the larvae, killing time by either recombinant virus was significantly shorter than that by wild-type virus. Killing time was reduced ca. 30% for AcAaIT-infected larvae and 5 to 8% for AcJHE.KK-infected larvae as compared to that for AcMNPV-C6-infected larvae. The average weight of larvae infected with AcAaIT was significantly lower than that of larvae infected with AcJHE.KK and AcMNPV-C6. The mean numbers of polyhedra produced in each larva inoculated with AcAaIT and AcJHE.KK were ca. 20% and 60%, respectively, of those for AcMNPV-C6. Total virus titers in AcMNPV-C6-infected larvae were significantly higher than those in AcJHE.KK-and AcAaIT-infected larvae until 2 days post infection.

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Author

Yasuhisa Kunimi; James R. Fuxa; Bruce D. Hammock

Publisher

Springer; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0013-8703)

Published

1996

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)