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New record of nucleopolyhedroviruses in tea looper caterpillars in India |
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| Authors: | Antony Binu Sinu Palatty Allesh Das Sudripta |
| Institution: | a Department of Entomology, Tea Research Association, Tocklai Experimental Station, Jorhat 785 008, Assam, India b Plant Protection Department, North Bengal Regional R&D Centre, Tea Research Association, Nagrakata, Jalpaiguri 735 225, West Bengal, India c Department of Biotechnology, Tea Research Association, Tocklai Experimental Station, Jorhat 785 008, Assam, India |
| Abstract: | Tea production in North-East India hit a record loss due to the widespread severe outbreak of a mixed brood of three species of looper caterpillar pests of geometrid moths (Lepidoptera) in 2008-2010. In addition to Buzura suppressaria, two newly recorded geometrids, viz., Hyposidra infixaria and Hyposidra talaca have caused widespread severe damage in recent years. In the present study we report the nucleopolyhedroviruses (NPV) isolated from the tea looper caterpillar from North-East India. We identified and characterized the NPV by cloning and sequencing a partial segment of polyhedrin gene of virus infected larvae of B. suppressaria, H. talaca and H. infixaria. A comparison of deduced amino acids of polyhedrin gene among H. talaca, H. infixaria and B. suppressaria showed that same strain was found to infect all the three loopers in India, which show high sequence identity with B. suppressaria Chinese isolates. Based on the polyhedrin sequence homology, it is predicted that a variant of B. suppressaria Chinese isolate of NPV found to infect H. talaca, H. infixaria and B. suppressaria in India. |
| Keywords: | Tea looper Hyposidra Buzura Nucleopolyhedrosis virus |
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