Surochita Basu

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Whole genome duplication leads to autopolyploidy and brings about an increase in cell size, concentration of secondary metabolites and enhanced cytosine methylation. The increased cell size offers a positive advantage to polyploids for cell-surface-related activities, but there is a differential response to change in body size across species and taxonomic(More)
Plant polygalacturonase-inhibiting proteins (PGIPs) belong to the leucine-rich repeat (LRR) family and are known to prevent pathogen invasion by inhibiting the plant cell wall degrading enzyme, polygalacturonase. Our study reveals that these multigene-encoded defence proteins found in flowering plants only exhibit identical domain architecture with 10(More)
The genus Hyoscyamus comprises of medicinally important species rich in tropane alkaloids. Its cultivated species have been subjected to genetic enhancement through chromosomal manipulation. Linear differentiation of chromosomes is quite important to facilitate chromosome identification, and inter-chromosomal and intra-chromosomal alterations for(More)
Fluorescence In Situ Hybridization (FISH) technique has been applied on somatic chromosomes and extended DNA fibers in the medicinally important species of Chlorophytum to elucidate physical localization and measurement of the rDNA sites using two rRNA multigene families homologous to 45S and 5S rDNA. The two species of Chlorophytum, namely C. borivillianum(More)
Environmental stress in plants impacts many biological processes, including male gametogenesis, and affects several cytological mechanisms that are strongly interrelated. To understand the likely impact of rising temperature on reproductive fitness in the climate change regime, a study of tapetal mitosis and its accompanying meiosis over seasons was made to(More)
This report concerns the ultraviolet absorption and optical rotatory dispersion (ORD) of DNA and of nucleotides down to 185 mp. An absorption band (y) at about 195 mp occurs for all these compounds. Similar studies have been made on histones and nucleohistone. These indicate a strong absorption below 200 mp due to protein. Consequently, if any native DNA is(More)
Costus speciosus Koen. ex Retz. occurs in shady areas, grows wild and exhibit multiple cytotypes in mixed deciduous forests of the east Indian state of Tripura. Chromosome counts of the cytotypes reveal differences in chromosome number i.e. 2n = 18, 27, 36, commensurate with the diploid, triploid, tetraploid status. Detailed chromosome analysis of the(More)
Generating anatomically realistic three-dimensional (3D) models of the human sinonasal cavity for numerical investigations of sprayed drug transport presents a host of methodological ambiguities. For example, subject-specific radiographic images used for 3D reconstructions typically exclude spray bottles. Subtracting a bottle contour from the 3D airspace(More)
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