Migratory behaviour of Brown planthopper, (Stål) (Hemiptera: Delphacidae), in India as inferred from genetic diversity and reverse trajectory analysis.

Unlabelled: The brown planthopper, (Stål) is a major sucking insect pest of rice. This insect has long been considered as migratory; however, its route in India is still unknown. Hence, to find out its migration route genetic diversity, genetic structure and gene flow of 16  populations from major rice growing regions of India was studied based on mitochondrial cytochrome oxidase I (COI).

Genetic homogeneity in South American tomato pinworm, : a new invasive pest to oriental region.

South American tomato leaf miner, (Meyrick, 1917) (Lepidoptera: Gelechiidae), is an important invasive pest of Tomato which invaded India and Nepal in 2014 and 2016, respectively. In the present study, samples from five localities of India and one from Nepal were used for the investigation of genetic diversity of by employing a fragment in the mtDNA gene-encoding cytochrome oxidase I (COI). Based on the partial COI gene, high genetic homogeneity was detected in populations of India and Nepal with rest of the world.

Cell death does not herald epithelial involution ("atrophy") in oral sub mucous fibrosis: a TEM study.

The disease progression in oral submucous fibrosis (OSF) seems to be in a biphasic manner, along both fibroblastic and keratinocytic lineages. The epithelial malignancy is considered to be a sequel of connective tissue changes. "Atrophy" of epithelium makes it amenable to the effect of oral carcinogens.