Abstract
This study reports the first detection of Wolbachia and yeast-like symbiont (YLS) harbored in Kerria lacca (Kerr), a scale insect, latter of which produces an economically important natural resin, known as lac. Wolbachia was detected using PCR amplification and sequencing of 16S rDNA; and further confirmation and phylogenetic analysis was carried out by fast evolving wsp gene. Neighbor-joining and maximum parsimonious (MP) analysis showed that this strain belongs to subgroup "ori" of Wolbachia super group B of arthropods. Wolbachia of K. lacca is hereby designated as "wKerlac" according to Wolbachia nomenclature system. Histological study revealed the presence of yeast-like endosymbiont, which was also confirmed by PCR amplification of 18S rDNA. Phylogenetic analysis revealed that YLS of K. lacca is quite distinct from YLS of aphid, planthoppers, and beetles. Putative roles of Wolbachia in lecanoid chromosome system of sex determination and in biased sex ratio of K. lacca populations; and YLS in nutritional supplementation and detoxifying substances which are deleterious to K. lacca, are hereby, suggested.
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