Department of Agricultural Entomology, Tamil Nadu Agricultural University, Coimbatore-641 003, Tamil Nadu, India
*Corresponding author's E-mail: arunaramaiah07@gmail.co.in
Online published on 11 January, 2019.
Investigations on the expression of chemosensory protein (CSP) in the antennae of S. litura revealed that the male and female adults had maximum similarity of 98 and 97 per cent, respectively. Nucleotide composition of antennal CSP gene of male and female S. litura revealed that adenine was rich with 29.5 and 29.1 per cent in male and female, respectively. Quantity of guanine and cytosine was the least with 22.5 per cent each in case of male and cytosine was the least with 22.2 per cent in female. The base pair composition of adenine + thymine was found to be rich in male and female than the composition of cytosine + guanine. The phylogenetic analysis of S. litura antennal CSP revealed that the SlCSP of male and female was found in the same cluster and had maximum similarity. These CSPs were found to be distant from S. litura lonotrophic receptors. The analysis on amino acid composition showed that the male antennae was rich in alanine and least in isoleucine, while asparagine was absent. Alanine was rich and aspartame was the least in female antennae. The amino acids viz., glutamic, tyrosine and phenylalanine were absent in female antennae.
Chemosensory protein, Spodoptera litura, antennae, phylogenetic analysis
